File ocaml-fix_aarch64_build.patch of Package ocaml

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File ocaml-fix_aarch64_build.patch of Package ocaml (Revision c2be04886a32107508f9c7969d8f2a45)

Currently displaying revision c2be04886a32107508f9c7969d8f2a45 , Show latest

diff -purN ocaml-4.05.0.orig/asmcomp/arm64/emit.mlp ocaml-4.05.0/asmcomp/arm64/emit.mlp
--- ocaml-4.05.0.orig/asmcomp/arm64/emit.mlp	2018-07-02 14:14:33.662238577 +0200
+++ ocaml-4.05.0/asmcomp/arm64/emit.mlp	2018-07-02 14:14:43.762280689 +0200
@@ -114,6 +114,7 @@ let emit_addressing addr r =
   | Iindexed ofs ->
       `[{emit_reg r}, #{emit_int ofs}]`
   | Ibased(s, ofs) ->
+      assert (not !Clflags.dlcode);  (* see selection.ml *)
       `[{emit_reg r}, #:lo12:{emit_symbol_offset s ofs}]`
 
 (* Record live pointers at call points *)
@@ -323,7 +324,7 @@ let emit_literals() =
 (* Emit code to load the address of a symbol *)
 
 let emit_load_symbol_addr dst s =
-  if (not !Clflags.dlcode) || Compilenv.symbol_in_current_unit s then begin
+  if not !Clflags.dlcode then begin
     `	adrp	{emit_reg dst}, {emit_symbol s}\n`;
     `	add	{emit_reg dst}, {emit_reg dst}, #:lo12:{emit_symbol s}\n`
   end else begin
@@ -609,6 +610,7 @@ let emit_instr i =
           match addr with
           | Iindexed _ -> i.arg.(0)
           | Ibased(s, ofs) ->
+              assert (not !Clflags.dlcode);  (* see selection.ml *)
               `	adrp	{emit_reg reg_tmp1}, {emit_symbol_offset s ofs}\n`;
               reg_tmp1 in
         begin match size with
@@ -636,6 +638,7 @@ let emit_instr i =
           match addr with
           | Iindexed _ -> i.arg.(1)
           | Ibased(s, ofs) ->
+              assert (not !Clflags.dlcode);
               `	adrp	{emit_reg reg_tmp1}, {emit_symbol_offset s ofs}\n`;
               reg_tmp1 in
         begin match size with
@@ -924,7 +927,15 @@ let fundecl fundecl =
 
 let emit_item = function
   | Cglobal_symbol s -> `	.globl	{emit_symbol s}\n`;
-  | Cdefine_symbol s -> `{emit_symbol s}:\n`
+  | Cdefine_symbol s ->
+    if !Clflags.dlcode then begin
+      (* GOT relocations against non-global symbols don't seem to work
+         properly: GOT entries are not created for the symbols and the
+         relocations evaluate to random other GOT entries.  For the moment
+         force all symbols to be global. *)
+      `	.globl	{emit_symbol s}\n`;
+    end;
+    `{emit_symbol s}:\n`
   | Cint8 n -> `	.byte	{emit_int n}\n`
   | Cint16 n -> `	.short	{emit_int n}\n`
   | Cint32 n -> `	.long	{emit_nativeint n}\n`
diff -purN ocaml-4.05.0.orig/asmcomp/arm64/emit.mlp.orig ocaml-4.05.0/asmcomp/arm64/emit.mlp.orig
--- ocaml-4.05.0.orig/asmcomp/arm64/emit.mlp.orig	1970-01-01 01:00:00.000000000 +0100
+++ ocaml-4.05.0/asmcomp/arm64/emit.mlp.orig	2017-07-13 10:56:44.000000000 +0200
@@ -0,0 +1,993 @@
+#2 "asmcomp/arm64/emit.mlp"
+(**************************************************************************)
+(*                                                                        *)
+(*                                 OCaml                                  *)
+(*                                                                        *)
+(*             Xavier Leroy, projet Gallium, INRIA Rocquencourt           *)
+(*                 Benedikt Meurer, University of Siegen                  *)
+(*                                                                        *)
+(*   Copyright 2013 Institut National de Recherche en Informatique et     *)
+(*     en Automatique.                                                    *)
+(*   Copyright 2012 Benedikt Meurer.                                      *)
+(*                                                                        *)
+(*   All rights reserved.  This file is distributed under the terms of    *)
+(*   the GNU Lesser General Public License version 2.1, with the          *)
+(*   special exception on linking described in the file LICENSE.          *)
+(*                                                                        *)
+(**************************************************************************)
+
+(* Emission of ARM assembly code, 64-bit mode *)
+
+open Misc
+open Cmm
+open Arch
+open Proc
+open Reg
+open Mach
+open Linearize
+open Emitaux
+
+(* Tradeoff between code size and code speed *)
+
+let fastcode_flag = ref true
+
+(* Names for special regs *)
+
+let reg_trap_ptr = phys_reg 23
+let reg_alloc_ptr = phys_reg 24
+let reg_alloc_limit = phys_reg 25
+let reg_tmp1 = phys_reg 26
+let reg_x15 = phys_reg 15
+
+(* Output a label *)
+
+let emit_label lbl =
+  emit_string ".L"; emit_int lbl
+
+(* Symbols *)
+
+let emit_symbol s =
+  Emitaux.emit_symbol '$' s
+
+(* Output a pseudo-register *)
+
+let emit_reg = function
+    {loc = Reg r} -> emit_string (register_name r)
+  | _ -> fatal_error "Emit.emit_reg"
+
+(* Likewise, but with the 32-bit name of the register *)
+
+let int_reg_name_w =
+  [| "w0";  "w1";  "w2";  "w3";  "w4";  "w5";  "w6";  "w7";
+     "w8";  "w9";  "w10"; "w11"; "w12"; "w13"; "w14"; "w15";
+     "w19"; "w20"; "w21"; "w22"; "w23"; "w24"; "w25";
+     "w26"; "w27"; "w28"; "w16"; "w17" |]
+
+let emit_wreg = function
+    {loc = Reg r} -> emit_string int_reg_name_w.(r)
+  | _ -> fatal_error "Emit.emit_wreg"
+
+(* Layout of the stack frame *)
+
+let stack_offset = ref 0
+
+let frame_size () =
+  let sz =
+    !stack_offset +
+    8 * num_stack_slots.(0) +
+    8 * num_stack_slots.(1) +
+    (if !contains_calls then 8 else 0)
+  in Misc.align sz 16
+
+let slot_offset loc cl =
+  match loc with
+    Incoming n ->
+      assert (n >= 0);
+      frame_size() + n
+  | Local n ->
+      !stack_offset +
+      (if cl = 0
+       then n * 8
+       else num_stack_slots.(0) * 8 + n * 8)
+  | Outgoing n ->
+      assert (n >= 0);
+      n
+
+(* Output a stack reference *)
+
+let emit_stack r =
+  match r.loc with
+  | Stack s ->
+      let ofs = slot_offset s (register_class r) in `[sp, #{emit_int ofs}]`
+  | _ -> fatal_error "Emit.emit_stack"
+
+(* Output an addressing mode *)
+
+let emit_symbol_offset s ofs =
+  emit_symbol s;
+  if ofs > 0 then `+{emit_int ofs}`
+  else if ofs < 0 then `-{emit_int (-ofs)}`
+  else ()
+
+let emit_addressing addr r =
+  match addr with
+  | Iindexed ofs ->
+      `[{emit_reg r}, #{emit_int ofs}]`
+  | Ibased(s, ofs) ->
+      `[{emit_reg r}, #:lo12:{emit_symbol_offset s ofs}]`
+
+(* Record live pointers at call points *)
+
+let record_frame_label ?label live raise_ dbg =
+  let lbl =
+    match label with
+    | None -> new_label()
+    | Some label -> label
+  in
+  let live_offset = ref [] in
+  Reg.Set.iter
+    (function
+      | {typ = Val; loc = Reg r} ->
+          live_offset := ((r lsl 1) + 1) :: !live_offset
+      | {typ = Val; loc = Stack s} as reg ->
+          live_offset := slot_offset s (register_class reg) :: !live_offset
+      | {typ = Addr} as r ->
+          Misc.fatal_error ("bad GC root " ^ Reg.name r)
+      | _ -> ())
+    live;
+  record_frame_descr ~label:lbl ~frame_size:(frame_size())
+    ~live_offset:!live_offset ~raise_frame:raise_ dbg;
+  lbl
+
+let record_frame ?label live raise_ dbg =
+  let lbl = record_frame_label ?label live raise_ dbg in `{emit_label lbl}:`
+
+(* Record calls to the GC -- we've moved them out of the way *)
+
+type gc_call =
+  { gc_lbl: label;                      (* Entry label *)
+    gc_return_lbl: label;               (* Where to branch after GC *)
+    gc_frame_lbl: label }               (* Label of frame descriptor *)
+
+let call_gc_sites = ref ([] : gc_call list)
+
+let emit_call_gc gc =
+  `{emit_label gc.gc_lbl}:	bl	{emit_symbol "caml_call_gc"}\n`;
+  `{emit_label gc.gc_frame_lbl}:	b	{emit_label gc.gc_return_lbl}\n`
+
+(* Record calls to caml_ml_array_bound_error.
+   In debug mode, we maintain one call to caml_ml_array_bound_error
+   per bound check site. Otherwise, we can share a single call. *)
+
+type bound_error_call =
+  { bd_lbl: label;                    (* Entry label *)
+    bd_frame_lbl: label }             (* Label of frame descriptor *)
+
+let bound_error_sites = ref ([] : bound_error_call list)
+
+let bound_error_label ?label dbg =
+  if !Clflags.debug || !bound_error_sites = [] then begin
+    let lbl_bound_error = new_label() in
+    let lbl_frame = record_frame_label ?label Reg.Set.empty false dbg in
+    bound_error_sites :=
+      { bd_lbl = lbl_bound_error;
+        bd_frame_lbl = lbl_frame } :: !bound_error_sites;
+    lbl_bound_error
+  end else begin
+    let bd = List.hd !bound_error_sites in bd.bd_lbl
+  end
+
+let emit_call_bound_error bd =
+  `{emit_label bd.bd_lbl}:	bl	{emit_symbol "caml_ml_array_bound_error"}\n`;
+  `{emit_label bd.bd_frame_lbl}:\n`
+
+(* Names of various instructions *)
+
+let name_for_comparison = function
+  | Isigned Ceq -> "eq" | Isigned Cne -> "ne" | Isigned Cle -> "le"
+  | Isigned Cge -> "ge" | Isigned Clt -> "lt" | Isigned Cgt -> "gt"
+  | Iunsigned Ceq -> "eq" | Iunsigned Cne -> "ne" | Iunsigned Cle -> "ls"
+  | Iunsigned Cge -> "cs" | Iunsigned Clt -> "cc" | Iunsigned Cgt -> "hi"
+
+let name_for_int_operation = function
+  | Iadd -> "add"
+  | Isub -> "sub"
+  | Imul -> "mul"
+  | Idiv -> "sdiv"
+  | Iand -> "and"
+  | Ior  -> "orr"
+  | Ixor -> "eor"
+  | Ilsl -> "lsl"
+  | Ilsr -> "lsr"
+  | Iasr -> "asr"
+  | _ -> assert false
+
+(* Load an integer constant into a register *)
+
+let emit_intconst dst n =
+  let rec emit_pos first shift =
+    if shift < 0 then begin
+      if first then `	mov	{emit_reg dst}, xzr\n`
+    end else begin
+      let s = Nativeint.(logand (shift_right_logical n shift) 0xFFFFn) in
+      if s = 0n then emit_pos first (shift - 16) else begin
+        if first then
+          `	movz	{emit_reg dst}, #{emit_nativeint s}, lsl #{emit_int shift}\n`
+        else
+           `	movk	{emit_reg dst}, #{emit_nativeint s}, lsl #{emit_int shift}\n`;
+        emit_pos false (shift - 16)
+      end
+    end
+  and emit_neg first shift =
+    if shift < 0 then begin
+      if first then `	movn	{emit_reg dst}, #0\n`
+    end else begin
+      let s = Nativeint.(logand (shift_right_logical n shift) 0xFFFFn) in
+      if s = 0xFFFFn then emit_neg first (shift - 16) else begin
+        if first then
+          `	movn	{emit_reg dst}, #{emit_nativeint (Nativeint.logxor s 0xFFFFn)}, lsl #{emit_int shift}\n`
+        else
+           `	movk	{emit_reg dst}, #{emit_nativeint s}, lsl #{emit_int shift}\n`;
+        emit_neg false (shift - 16)
+      end
+    end
+  in
+    if n < 0n then emit_neg true 48 else emit_pos true 48
+
+let num_instructions_for_intconst n =
+  let num_instructions = ref 0 in
+  let rec count_pos first shift =
+    if shift < 0 then begin
+      if first then incr num_instructions
+    end else begin
+      let s = Nativeint.(logand (shift_right_logical n shift) 0xFFFFn) in
+      if s = 0n then count_pos first (shift - 16) else begin
+        incr num_instructions;
+        count_pos false (shift - 16)
+      end
+    end
+  and count_neg first shift =
+    if shift < 0 then begin
+      if first then incr num_instructions
+    end else begin
+      let s = Nativeint.(logand (shift_right_logical n shift) 0xFFFFn) in
+      if s = 0xFFFFn then count_neg first (shift - 16) else begin
+        incr num_instructions;
+        count_neg false (shift - 16)
+      end
+    end
+  in
+  if n < 0n then count_neg true 48 else count_pos true 48;
+  !num_instructions
+
+(* Recognize float constants appropriate for FMOV dst, #fpimm instruction:
+   "a normalized binary floating point encoding with 1 sign bit, 4
+    bits of fraction and a 3-bit exponent" *)
+
+let is_immediate_float bits =
+  let exp = (Int64.(to_int (shift_right_logical bits 52)) land 0x7FF) - 1023 in
+  let mant = Int64.logand bits 0xF_FFFF_FFFF_FFFFL in
+  exp >= -3 && exp <= 4 && Int64.logand mant 0xF_0000_0000_0000L = mant
+
+(* Adjust sp (up or down) by the given byte amount *)
+
+let emit_stack_adjustment n =
+  let instr = if n < 0 then "sub" else "add" in
+  let m = abs n in
+  assert (m < 0x1_000_000);
+  let ml = m land 0xFFF and mh = m land 0xFFF_000 in
+  if mh <> 0 then `	{emit_string instr}	sp, sp, #{emit_int mh}\n`;
+  if ml <> 0 then `	{emit_string instr}	sp, sp, #{emit_int ml}\n`;
+  if n <> 0 then cfi_adjust_cfa_offset (-n)
+
+(* Deallocate the stack frame and reload the return address
+   before a return or tail call *)
+
+let output_epilogue f =
+  let n = frame_size() in
+  if !contains_calls then
+    `	ldr	x30, [sp, #{emit_int (n-8)}]\n`;
+  if n > 0 then
+    emit_stack_adjustment n;
+  f();
+  (* reset CFA back because function body may continue *)
+  if n > 0 then cfi_adjust_cfa_offset n
+
+(* Name of current function *)
+let function_name = ref ""
+(* Entry point for tail recursive calls *)
+let tailrec_entry_point = ref 0
+(* Pending floating-point literals *)
+let float_literals = ref ([] : (int64 * label) list)
+
+(* Label a floating-point literal *)
+let float_literal f =
+  try
+    List.assoc f !float_literals
+  with Not_found ->
+    let lbl = new_label() in
+    float_literals := (f, lbl) :: !float_literals;
+    lbl
+
+(* Emit all pending literals *)
+let emit_literals() =
+  if !float_literals <> [] then begin
+    `	.align	3\n`;
+    List.iter
+      (fun (f, lbl) ->
+        `{emit_label lbl}:`; emit_float64_directive ".quad" f)
+      !float_literals;
+    float_literals := []
+  end
+
+(* Emit code to load the address of a symbol *)
+
+let emit_load_symbol_addr dst s =
+  if (not !Clflags.dlcode) || Compilenv.symbol_in_current_unit s then begin
+    `	adrp	{emit_reg dst}, {emit_symbol s}\n`;
+    `	add	{emit_reg dst}, {emit_reg dst}, #:lo12:{emit_symbol s}\n`
+  end else begin
+    `	adrp	{emit_reg dst}, :got:{emit_symbol s}\n`;
+    `	ldr	{emit_reg dst}, [{emit_reg dst}, #:got_lo12:{emit_symbol s}]\n`
+  end
+
+(* The following functions are used for calculating the sizes of the
+   call GC and bounds check points emitted out-of-line from the function
+   body.  See branch_relaxation.mli. *)
+
+let num_call_gc_and_check_bound_points instr =
+  let rec loop instr ((call_gc, check_bound) as totals) =
+    match instr.desc with
+    | Lend -> totals
+    | Lop (Ialloc _) when !fastcode_flag ->
+      loop instr.next (call_gc + 1, check_bound)
+    | Lop (Iintop Icheckbound _)
+    | Lop (Iintop_imm (Icheckbound _, _))
+    | Lop (Ispecific (Ishiftcheckbound _)) ->
+      let check_bound =
+        (* When not in debug mode, there is at most one check-bound point. *)
+        if not !Clflags.debug then 1
+        else check_bound + 1
+      in
+      loop instr.next (call_gc, check_bound)
+    (* The following four should never be seen, since this function is run
+       before branch relaxation. *)
+    | Lop (Ispecific (Ifar_alloc _))
+    | Lop (Ispecific Ifar_intop_checkbound _)
+    | Lop (Ispecific (Ifar_intop_imm_checkbound _))
+    | Lop (Ispecific (Ifar_shiftcheckbound _)) -> assert false
+    | _ -> loop instr.next totals
+  in
+  loop instr (0, 0)
+
+let max_out_of_line_code_offset ~num_call_gc ~num_check_bound =
+  if num_call_gc < 1 && num_check_bound < 1 then 0
+  else begin
+    let size_of_call_gc = 2 in
+    let size_of_check_bound = 1 in
+    let size_of_last_thing =
+      (* Call-GC points come before check-bound points. *)
+      if num_check_bound >= 1 then size_of_check_bound else size_of_call_gc
+    in
+    let total_size =
+      size_of_call_gc*num_call_gc + size_of_check_bound*num_check_bound
+    in
+    let max_offset = total_size - size_of_last_thing in
+    assert (max_offset >= 0);
+    max_offset
+  end
+
+module BR = Branch_relaxation.Make (struct
+  (* CR-someday mshinwell: B and BL have +/- 128Mb ranges; for the moment we
+     assume we will never exceed this.  It would seem to be most likely to
+     occur for branches between functions; in this case, the linker should be
+     able to insert veneers anyway.  (See section 4.6.7 of the document
+     "ELF for the ARM 64-bit architecture (AArch64)".) *)
+
+  type distance = int
+
+  module Cond_branch = struct
+    type t = TB | CB | Bcc
+
+    let all = [TB; CB; Bcc]
+
+    (* AArch64 instructions are 32 bits wide, so [distance] in this module
+       means units of 32-bit words. *)
+    let max_displacement = function
+      | TB -> 32 * 1024 / 4  (* +/- 32Kb *)
+      | CB | Bcc -> 1 * 1024 * 1024 / 4  (* +/- 1Mb *)
+
+    let classify_instr = function
+      | Lop (Ialloc _)
+      | Lop (Iintop Icheckbound _)
+      | Lop (Iintop_imm (Icheckbound _, _))
+      | Lop (Ispecific (Ishiftcheckbound _)) -> Some Bcc
+      (* The various "far" variants in [specific_operation] don't need to
+         return [Some] here, since their code sequences never contain any
+         conditional branches that might need relaxing. *)
+      | Lcondbranch (Itruetest, _)
+      | Lcondbranch (Ifalsetest, _) -> Some CB
+      | Lcondbranch (Iinttest _, _)
+      | Lcondbranch (Iinttest_imm _, _)
+      | Lcondbranch (Ifloattest _, _) -> Some Bcc
+      | Lcondbranch (Ioddtest, _)
+      | Lcondbranch (Ieventest, _) -> Some TB
+      | Lcondbranch3 _ -> Some Bcc
+      | _ -> None
+  end
+
+  let offset_pc_at_branch = 0
+
+  let epilogue_size () =
+    if !contains_calls then 3 else 2
+
+  let instr_size = function
+    | Lend -> 0
+    | Lop (Imove | Ispill | Ireload) -> 1
+    | Lop (Iconst_int n) ->
+      num_instructions_for_intconst n
+    | Lop (Iconst_float _) -> 2
+    | Lop (Iconst_symbol _) -> 2
+    | Lop (Icall_ind _) -> 1
+    | Lop (Icall_imm _) -> 1
+    | Lop (Itailcall_ind _) -> epilogue_size ()
+    | Lop (Itailcall_imm { func; _ }) ->
+      if func = !function_name then 1 else epilogue_size ()
+    | Lop (Iextcall { alloc = false; }) -> 1
+    | Lop (Iextcall { alloc = true; }) -> 3
+    | Lop (Istackoffset _) -> 2
+    | Lop (Iload (size, addr)) | Lop (Istore (size, addr, _)) ->
+      let based = match addr with Iindexed _ -> 0 | Ibased _ -> 1 in
+      based + begin match size with Single -> 2 | _ -> 1 end
+    | Lop (Ialloc _) when !fastcode_flag -> 4
+    | Lop (Ispecific (Ifar_alloc _)) when !fastcode_flag -> 5
+    | Lop (Ialloc { words = num_words; _ })
+    | Lop (Ispecific (Ifar_alloc { words = num_words; _ })) ->
+      begin match num_words with
+      | 16 | 24 | 32 -> 1
+      | _ -> 1 + num_instructions_for_intconst (Nativeint.of_int num_words)
+      end
+    | Lop (Iintop (Icomp _)) -> 2
+    | Lop (Iintop_imm (Icomp _, _)) -> 2
+    | Lop (Iintop (Icheckbound _)) -> 2
+    | Lop (Ispecific (Ifar_intop_checkbound _)) -> 3
+    | Lop (Iintop_imm (Icheckbound _, _)) -> 2
+    | Lop (Ispecific (Ifar_intop_imm_checkbound _)) -> 3
+    | Lop (Ispecific (Ishiftcheckbound _)) -> 2
+    | Lop (Ispecific (Ifar_shiftcheckbound _)) -> 3
+    | Lop (Iintop Imod) -> 2
+    | Lop (Iintop Imulh) -> 1
+    | Lop (Iintop _) -> 1
+    | Lop (Iintop_imm _) -> 1
+    | Lop (Ifloatofint | Iintoffloat | Iabsf | Inegf | Ispecific Isqrtf) -> 1
+    | Lop (Iaddf | Isubf | Imulf | Idivf | Ispecific Inegmulf) -> 1
+    | Lop (Ispecific (Imuladdf | Inegmuladdf | Imulsubf | Inegmulsubf)) -> 1
+    | Lop (Ispecific (Ishiftarith _)) -> 1
+    | Lop (Ispecific (Imuladd | Imulsub)) -> 1
+    | Lop (Ispecific (Ibswap 16)) -> 2
+    | Lop (Ispecific (Ibswap _)) -> 1
+    | Lreloadretaddr -> 0
+    | Lreturn -> epilogue_size ()
+    | Llabel _ -> 0
+    | Lbranch _ -> 1
+    | Lcondbranch (tst, _) ->
+      begin match tst with
+      | Itruetest -> 1
+      | Ifalsetest -> 1
+      | Iinttest _ -> 2
+      | Iinttest_imm _ -> 2
+      | Ifloattest _ -> 2
+      | Ioddtest -> 1
+      | Ieventest -> 1
+      end
+    | Lcondbranch3 (lbl0, lbl1, lbl2) ->
+      1 + begin match lbl0 with None -> 0 | Some _ -> 1 end
+        + begin match lbl1 with None -> 0 | Some _ -> 1 end
+        + begin match lbl2 with None -> 0 | Some _ -> 1 end
+    | Lswitch jumptbl -> 3 + Array.length jumptbl
+    | Lsetuptrap _ -> 2
+    | Lpushtrap -> 3
+    | Lpoptrap -> 1
+    | Lraise k ->
+      begin match k with
+      | Cmm.Raise_withtrace -> 1
+      | Cmm.Raise_notrace -> 4
+      end
+
+  let relax_allocation ~num_words ~label_after_call_gc =
+    Lop (Ispecific (Ifar_alloc { words = num_words; label_after_call_gc; }))
+
+  let relax_intop_checkbound ~label_after_error =
+    Lop (Ispecific (Ifar_intop_checkbound { label_after_error; }))
+
+  let relax_intop_imm_checkbound ~bound ~label_after_error =
+    Lop (Ispecific (Ifar_intop_imm_checkbound { bound; label_after_error; }))
+
+  let relax_specific_op = function
+    | Ishiftcheckbound { shift; label_after_error; } ->
+      Lop (Ispecific (Ifar_shiftcheckbound { shift; label_after_error; }))
+    | _ -> assert false
+end)
+
+(* Output the assembly code for allocation. *)
+
+let assembly_code_for_allocation ?label_after_call_gc i ~n ~far =
+  let lbl_frame =
+    record_frame_label ?label:label_after_call_gc i.live false i.dbg
+  in
+  if !fastcode_flag then begin
+    let lbl_redo = new_label() in
+    let lbl_call_gc = new_label() in
+    `{emit_label lbl_redo}:`;
+    `	sub	{emit_reg reg_alloc_ptr}, {emit_reg reg_alloc_ptr}, #{emit_int n}\n`;
+    `	cmp	{emit_reg reg_alloc_ptr}, {emit_reg reg_alloc_limit}\n`;
+    `	add	{emit_reg i.res.(0)}, {emit_reg reg_alloc_ptr}, #8\n`;
+    if not far then begin
+      `	b.lo	{emit_label lbl_call_gc}\n`
+    end else begin
+      let lbl = new_label () in
+      `	b.cs	{emit_label lbl}\n`;
+      `	b	{emit_label lbl_call_gc}\n`;
+      `{emit_label lbl}:\n`
+    end;
+    call_gc_sites :=
+      { gc_lbl = lbl_call_gc;
+        gc_return_lbl = lbl_redo;
+        gc_frame_lbl = lbl_frame } :: !call_gc_sites
+  end else begin
+    begin match n with
+    | 16 -> `	bl	{emit_symbol "caml_alloc1"}\n`
+    | 24 -> `	bl	{emit_symbol "caml_alloc2"}\n`
+    | 32 -> `	bl	{emit_symbol "caml_alloc3"}\n`
+    | _  -> emit_intconst reg_x15 (Nativeint.of_int n);
+            `	bl	{emit_symbol "caml_allocN"}\n`
+    end;
+    `{emit_label lbl_frame}:	add	{emit_reg i.res.(0)}, {emit_reg reg_alloc_ptr}, #8\n`
+  end
+
+(* Output the assembly code for an instruction *)
+
+let emit_instr i =
+    emit_debug_info i.dbg;
+    match i.desc with
+    | Lend -> ()
+    | Lop(Imove | Ispill | Ireload) ->
+        let src = i.arg.(0) and dst = i.res.(0) in
+        if src.loc <> dst.loc then begin
+          match (src, dst) with
+          | {loc = Reg _; typ = Float}, {loc = Reg _} ->
+              `	fmov	{emit_reg dst}, {emit_reg src}\n`
+          | {loc = Reg _}, {loc = Reg _} ->
+              `	mov	{emit_reg dst}, {emit_reg src}\n`
+          | {loc = Reg _}, {loc = Stack _} ->
+              `	str	{emit_reg src}, {emit_stack dst}\n`
+          | {loc = Stack _}, {loc = Reg _} ->
+              `	ldr	{emit_reg dst}, {emit_stack src}\n`
+          | _ ->
+              assert false
+        end
+    | Lop(Iconst_int n) ->
+        emit_intconst i.res.(0) n
+    | Lop(Iconst_float f) ->
+        if f = 0L then
+          `	fmov	{emit_reg i.res.(0)}, xzr\n`
+        else if is_immediate_float f then
+          `	fmov	{emit_reg i.res.(0)}, #{emit_printf "0x%Lx" f}\n`
+        else begin
+          let lbl = float_literal f in
+          `	adrp	{emit_reg reg_tmp1}, {emit_label lbl}\n`;
+          `	ldr	{emit_reg i.res.(0)}, [{emit_reg reg_tmp1}, #:lo12:{emit_label lbl}]\n`
+        end
+    | Lop(Iconst_symbol s) ->
+        emit_load_symbol_addr i.res.(0) s
+    | Lop(Icall_ind { label_after; }) ->
+        `	blr	{emit_reg i.arg.(0)}\n`;
+        `{record_frame i.live false i.dbg ~label:label_after}\n`
+    | Lop(Icall_imm { func; label_after; }) ->
+        `	bl	{emit_symbol func}\n`;
+        `{record_frame i.live false i.dbg ~label:label_after}\n`
+    | Lop(Itailcall_ind { label_after = _; }) ->
+        output_epilogue (fun () -> `	br	{emit_reg i.arg.(0)}\n`)
+    | Lop(Itailcall_imm { func; label_after = _; }) ->
+        if func = !function_name then
+          `	b	{emit_label !tailrec_entry_point}\n`
+        else
+          output_epilogue (fun () -> `	b	{emit_symbol func}\n`)
+    | Lop(Iextcall { func; alloc = false; label_after = _; }) ->
+        `	bl	{emit_symbol func}\n`
+    | Lop(Iextcall { func; alloc = true; label_after; }) ->
+        emit_load_symbol_addr reg_x15 func;
+        `	bl	{emit_symbol "caml_c_call"}\n`;
+        `{record_frame i.live false i.dbg ~label:label_after}\n`
+    | Lop(Istackoffset n) ->
+        assert (n mod 16 = 0);
+        emit_stack_adjustment (-n);
+        stack_offset := !stack_offset + n
+    | Lop(Iload(size, addr)) ->
+        let dst = i.res.(0) in
+        let base =
+          match addr with
+          | Iindexed _ -> i.arg.(0)
+          | Ibased(s, ofs) ->
+              `	adrp	{emit_reg reg_tmp1}, {emit_symbol_offset s ofs}\n`;
+              reg_tmp1 in
+        begin match size with
+        | Byte_unsigned ->
+            `	ldrb	{emit_wreg dst}, {emit_addressing addr base}\n`
+        | Byte_signed ->
+            `	ldrsb	{emit_reg dst}, {emit_addressing addr base}\n`
+        | Sixteen_unsigned ->
+            `	ldrh	{emit_wreg dst}, {emit_addressing addr base}\n`
+        | Sixteen_signed ->
+            `	ldrsh	{emit_reg dst}, {emit_addressing addr base}\n`
+        | Thirtytwo_unsigned ->
+            `	ldr	{emit_wreg dst}, {emit_addressing addr base}\n`
+        | Thirtytwo_signed ->
+            `	ldrsw	{emit_reg dst}, {emit_addressing addr base}\n`
+        | Single ->
+            `	ldr	s7, {emit_addressing addr base}\n`;
+            `	fcvt	{emit_reg dst}, s7\n`
+        | Word_int | Word_val | Double | Double_u ->
+            `	ldr	{emit_reg dst}, {emit_addressing addr base}\n`
+        end
+    | Lop(Istore(size, addr, _)) ->
+        let src = i.arg.(0) in
+        let base =
+          match addr with
+          | Iindexed _ -> i.arg.(1)
+          | Ibased(s, ofs) ->
+              `	adrp	{emit_reg reg_tmp1}, {emit_symbol_offset s ofs}\n`;
+              reg_tmp1 in
+        begin match size with
+        | Byte_unsigned | Byte_signed ->
+            `	strb	{emit_wreg src}, {emit_addressing addr base}\n`
+        | Sixteen_unsigned | Sixteen_signed ->
+            `	strh	{emit_wreg src}, {emit_addressing addr base}\n`
+        | Thirtytwo_unsigned | Thirtytwo_signed ->
+            `	str	{emit_wreg src}, {emit_addressing addr base}\n`
+        | Single ->
+            `	fcvt	s7, {emit_reg src}\n`;
+            `	str	s7, {emit_addressing addr base}\n`;
+        | Word_int | Word_val | Double | Double_u ->
+            `	str	{emit_reg src}, {emit_addressing addr base}\n`
+        end
+    | Lop(Ialloc { words = n; label_after_call_gc; }) ->
+        assembly_code_for_allocation i ~n ~far:false ?label_after_call_gc
+    | Lop(Ispecific (Ifar_alloc { words = n; label_after_call_gc; })) ->
+        assembly_code_for_allocation i ~n ~far:true ?label_after_call_gc
+    | Lop(Iintop(Icomp cmp)) ->
+        `	cmp	{emit_reg i.arg.(0)}, {emit_reg i.arg.(1)}\n`;
+        `	cset	{emit_reg i.res.(0)}, {emit_string (name_for_comparison cmp)}\n`
+    | Lop(Iintop_imm(Icomp cmp, n)) ->
+        `	cmp	{emit_reg i.arg.(0)}, #{emit_int n}\n`;
+        `	cset	{emit_reg i.res.(0)}, {emit_string (name_for_comparison cmp)}\n`
+    | Lop(Iintop (Icheckbound { label_after_error; })) ->
+        let lbl = bound_error_label i.dbg ?label:label_after_error in
+        `	cmp	{emit_reg i.arg.(0)}, {emit_reg i.arg.(1)}\n`;
+        `	b.ls	{emit_label lbl}\n`
+    | Lop(Ispecific Ifar_intop_checkbound { label_after_error; }) ->
+        let lbl = bound_error_label i.dbg ?label:label_after_error in
+        let lbl2 = new_label () in
+        `	cmp	{emit_reg i.arg.(0)}, {emit_reg i.arg.(1)}\n`;
+        `	b.hi	{emit_label lbl2}\n`;
+        `	b	{emit_label lbl}\n`;
+        `{emit_label lbl2}:\n`;
+    | Lop(Iintop_imm(Icheckbound { label_after_error; }, n)) ->
+        let lbl = bound_error_label i.dbg ?label:label_after_error in
+        `	cmp	{emit_reg i.arg.(0)}, #{emit_int n}\n`;
+        `	b.ls	{emit_label lbl}\n`
+    | Lop(Ispecific(
+          Ifar_intop_imm_checkbound { bound; label_after_error; })) ->
+        let lbl = bound_error_label i.dbg ?label:label_after_error in
+        let lbl2 = new_label () in
+        `	cmp	{emit_reg i.arg.(0)}, #{emit_int bound}\n`;
+        `	b.hi	{emit_label lbl2}\n`;
+        `	b	{emit_label lbl}\n`;
+        `{emit_label lbl2}:\n`;
+    | Lop(Ispecific(Ishiftcheckbound { shift; label_after_error; })) ->
+        let lbl = bound_error_label i.dbg ?label:label_after_error in
+        `	cmp	{emit_reg i.arg.(1)}, {emit_reg i.arg.(0)}, lsr #{emit_int shift}\n`;
+        `	b.cs	{emit_label lbl}\n`
+    | Lop(Ispecific(Ifar_shiftcheckbound { shift; label_after_error; })) ->
+        let lbl = bound_error_label i.dbg ?label:label_after_error in
+        let lbl2 = new_label () in
+        `	cmp	{emit_reg i.arg.(1)}, {emit_reg i.arg.(0)}, lsr #{emit_int shift}\n`;
+        `	b.lo	{emit_label lbl2}\n`;
+        `	b	{emit_label lbl}\n`;
+        `{emit_label lbl2}:\n`;
+    | Lop(Iintop Imod) ->
+        `	sdiv	{emit_reg reg_tmp1}, {emit_reg i.arg.(0)}, {emit_reg i.arg.(1)}\n`;
+        `	msub	{emit_reg i.res.(0)}, {emit_reg reg_tmp1}, {emit_reg i.arg.(1)}, {emit_reg i.arg.(0)}\n`
+    | Lop(Iintop Imulh) ->
+        `	smulh	{emit_reg i.res.(0)}, {emit_reg i.arg.(0)}, {emit_reg i.arg.(1)}\n`
+    | Lop(Iintop op) ->
+        let instr = name_for_int_operation op in
+        `	{emit_string instr}     {emit_reg i.res.(0)}, {emit_reg i.arg.(0)}, {emit_reg i.arg.(1)}\n`
+    | Lop(Iintop_imm(op, n)) ->
+        let instr = name_for_int_operation op in
+        `	{emit_string instr}     {emit_reg i.res.(0)}, {emit_reg i.arg.(0)}, #{emit_int n}\n`
+    | Lop(Ifloatofint | Iintoffloat | Iabsf | Inegf | Ispecific Isqrtf as op) ->
+        let instr = (match op with
+                     | Ifloatofint      -> "scvtf"
+                     | Iintoffloat      -> "fcvtzs"
+                     | Iabsf            -> "fabs"
+                     | Inegf            -> "fneg"
+                     | Ispecific Isqrtf -> "fsqrt"
+                     | _                -> assert false) in
+        `	{emit_string instr}	{emit_reg i.res.(0)}, {emit_reg i.arg.(0)}\n`
+    | Lop(Iaddf | Isubf | Imulf | Idivf | Ispecific Inegmulf as op) ->
+        let instr = (match op with
+                     | Iaddf              -> "fadd"
+                     | Isubf              -> "fsub"
+                     | Imulf              -> "fmul"
+                     | Idivf              -> "fdiv"
+                     | Ispecific Inegmulf -> "fnmul"
+                     | _                  -> assert false) in
+        `	{emit_string instr}	{emit_reg i.res.(0)}, {emit_reg i.arg.(0)}, {emit_reg i.arg.(1)}\n`
+    | Lop(Ispecific(Imuladdf | Inegmuladdf | Imulsubf | Inegmulsubf as op)) ->
+        let instr = (match op with
+                     | Imuladdf    -> "fmadd"
+                     | Inegmuladdf -> "fnmadd"
+                     | Imulsubf    -> "fmsub"
+                     | Inegmulsubf -> "fnmsub"
+                     | _ -> assert false) in
+        `	{emit_string instr}	{emit_reg i.res.(0)}, {emit_reg i.arg.(1)}, {emit_reg i.arg.(2)}, {emit_reg i.arg.(0)}\n`
+    | Lop(Ispecific(Ishiftarith(op, shift))) ->
+        let instr = (match op with
+                       Ishiftadd    -> "add"
+                     | Ishiftsub    -> "sub") in
+        `	{emit_string instr}	{emit_reg i.res.(0)}, {emit_reg i.arg.(0)}, {emit_reg i.arg.(1)}`;
+        if shift >= 0
+        then `, lsl #{emit_int shift}\n`
+        else `, asr #{emit_int (-shift)}\n`
+    | Lop(Ispecific(Imuladd | Imulsub as op)) ->
+        let instr = (match op with
+                       Imuladd -> "madd"
+                     | Imulsub -> "msub"
+                     | _ -> assert false) in
+        `	{emit_string instr}	{emit_reg i.res.(0)}, {emit_reg i.arg.(0)}, {emit_reg i.arg.(1)}, {emit_reg i.arg.(2)}\n`
+    | Lop(Ispecific(Ibswap size)) ->
+        begin match size with
+        | 16 ->
+            `	rev16	{emit_wreg i.res.(0)}, {emit_wreg i.arg.(0)}\n`;
+            `	ubfm	{emit_reg i.res.(0)}, {emit_reg i.res.(0)}, #0, #15\n`
+        | 32 ->
+            `	rev	{emit_wreg i.res.(0)}, {emit_wreg i.arg.(0)}\n`
+        | 64 ->
+            `	rev	{emit_reg i.res.(0)}, {emit_reg i.arg.(0)}\n`
+        | _ ->
+            assert false
+        end
+    | Lreloadretaddr ->
+        ()
+    | Lreturn ->
+        output_epilogue (fun () -> `	ret\n`)
+    | Llabel lbl ->
+        `{emit_label lbl}:\n`
+    | Lbranch lbl ->
+        `	b	{emit_label lbl}\n`
+    | Lcondbranch(tst, lbl) ->
+        begin match tst with
+        | Itruetest ->
+            `	cbnz	{emit_reg i.arg.(0)}, {emit_label lbl}\n`
+        | Ifalsetest ->
+            `	cbz	{emit_reg i.arg.(0)}, {emit_label lbl}\n`
+        | Iinttest cmp ->
+            `	cmp	{emit_reg i.arg.(0)}, {emit_reg i.arg.(1)}\n`;
+            let comp = name_for_comparison cmp in
+            `	b.{emit_string comp}	{emit_label lbl}\n`
+        | Iinttest_imm(cmp, n) ->
+            `	cmp	{emit_reg i.arg.(0)}, #{emit_int n}\n`;
+            let comp = name_for_comparison cmp in
+            `	b.{emit_string comp}	{emit_label lbl}\n`
+        | Ifloattest(cmp, neg) ->
+            let comp = (match (cmp, neg) with
+                        | (Ceq, false) | (Cne, true) -> "eq"
+                        | (Cne, false) | (Ceq, true) -> "ne"
+                        | (Clt, false) -> "cc"
+                        | (Clt, true)  -> "cs"
+                        | (Cle, false) -> "ls"
+                        | (Cle, true)  -> "hi"
+                        | (Cgt, false) -> "gt"
+                        | (Cgt, true)  -> "le"
+                        | (Cge, false) -> "ge"
+                        | (Cge, true)  -> "lt") in
+            `	fcmp	{emit_reg i.arg.(0)}, {emit_reg i.arg.(1)}\n`;
+            `	b.{emit_string comp}	{emit_label lbl}\n`
+        | Ioddtest ->
+            `	tbnz	{emit_reg i.arg.(0)}, #0, {emit_label lbl}\n`
+        | Ieventest ->
+            `	tbz	{emit_reg i.arg.(0)}, #0, {emit_label lbl}\n`
+        end
+    | Lcondbranch3(lbl0, lbl1, lbl2) ->
+        `	cmp	{emit_reg i.arg.(0)}, #1\n`;
+        begin match lbl0 with
+          None -> ()
+        | Some lbl -> `	b.lt	{emit_label lbl}\n`
+        end;
+        begin match lbl1 with
+          None -> ()
+        | Some lbl -> `	b.eq	{emit_label lbl}\n`
+        end;
+        begin match lbl2 with
+          None -> ()
+        | Some lbl -> `	b.gt	{emit_label lbl}\n`
+        end
+    | Lswitch jumptbl ->
+        let lbltbl = new_label() in
+        `	adr	{emit_reg reg_tmp1}, {emit_label lbltbl}\n`;
+        `	add	{emit_reg reg_tmp1}, {emit_reg reg_tmp1}, {emit_reg i.arg.(0)}, lsl #2\n`;
+        `	br	{emit_reg reg_tmp1}\n`;
+        `{emit_label lbltbl}:`;
+        for j = 0 to Array.length jumptbl - 1 do
+            `	b	{emit_label jumptbl.(j)}\n`
+        done
+(* Alternative:
+        let lbltbl = new_label() in
+        `	adr	{emit_reg reg_tmp1}, {emit_label lbltbl}\n`;
+        `	ldr	{emit_wreg reg_tmp2}, [{emit_reg reg_tmp1}, {emit_reg i.arg.(0)}, lsl #2]\n`;
+        `	add	{emit_reg reg_tmp1}, {emit_wreg reg_tmp2}, sxtb\n`;
+        `	br	{emit_reg reg_tmp1}\n`;
+        `{emit_label lbltbl}:\n`;
+        for j = 0 to Array.length jumptbl - 1 do
+            `	.word	{emit_label jumptbl.(j)} - {emit_label lbltbl}\n`
+        done
+*)
+    | Lsetuptrap lbl ->
+        let lblnext = new_label() in
+        `	adr	{emit_reg reg_tmp1}, {emit_label lblnext}\n`;
+        `	b	{emit_label lbl}\n`;
+        `{emit_label lblnext}:\n`
+    | Lpushtrap ->
+        stack_offset := !stack_offset + 16;
+        `	str	{emit_reg reg_trap_ptr}, [sp, -16]!\n`;
+        `	str	{emit_reg reg_tmp1}, [sp, #8]\n`;
+        cfi_adjust_cfa_offset 16;
+        `	mov	{emit_reg reg_trap_ptr}, sp\n`
+    | Lpoptrap ->
+        `	ldr	{emit_reg reg_trap_ptr}, [sp], 16\n`;
+        cfi_adjust_cfa_offset (-16);
+        stack_offset := !stack_offset - 16
+    | Lraise k ->
+        begin match k with
+        | Cmm.Raise_withtrace ->
+          `	bl	{emit_symbol "caml_raise_exn"}\n`;
+          `{record_frame Reg.Set.empty true i.dbg}\n`
+        | Cmm.Raise_notrace ->
+          `	mov	sp, {emit_reg reg_trap_ptr}\n`;
+          `	ldr	{emit_reg reg_tmp1}, [sp, #8]\n`;
+          `	ldr	{emit_reg reg_trap_ptr}, [sp], 16\n`;
+          `	br	{emit_reg reg_tmp1}\n`
+        end
+
+(* Emission of an instruction sequence *)
+
+let rec emit_all i =
+  if i.desc = Lend then () else (emit_instr i; emit_all i.next)
+
+(* Emission of the profiling prelude *)
+
+let emit_profile() = ()   (* TODO *)
+(*
+  match Config.system with
+    "linux_eabi" | "linux_eabihf" | "netbsd" ->
+      `	push	\{lr}\n`;
+      `	{emit_call "__gnu_mcount_nc"}\n`
+  | _ -> ()
+*)
+
+(* Emission of a function declaration *)
+
+let fundecl fundecl =
+  function_name := fundecl.fun_name;
+  fastcode_flag := fundecl.fun_fast;
+  tailrec_entry_point := new_label();
+  float_literals := [];
+  stack_offset := 0;
+  call_gc_sites := [];
+  bound_error_sites := [];
+  `	.text\n`;
+  `	.align	3\n`;
+  `	.globl	{emit_symbol fundecl.fun_name}\n`;
+  `	.type	{emit_symbol fundecl.fun_name}, %function\n`;
+  `{emit_symbol fundecl.fun_name}:\n`;
+  emit_debug_info fundecl.fun_dbg;
+  cfi_startproc();
+  if !Clflags.gprofile then emit_profile();
+  let n = frame_size() in
+  if n > 0 then
+    emit_stack_adjustment (-n);
+  if !contains_calls then begin
+    cfi_offset ~reg:30 (* return address *) ~offset:(-8);
+    `	str	x30, [sp, #{emit_int (n-8)}]\n`
+  end;
+  `{emit_label !tailrec_entry_point}:\n`;
+  let num_call_gc, num_check_bound =
+    num_call_gc_and_check_bound_points fundecl.fun_body
+  in
+  let max_out_of_line_code_offset =
+    max_out_of_line_code_offset ~num_call_gc
+      ~num_check_bound
+  in
+  BR.relax fundecl.fun_body ~max_out_of_line_code_offset;
+  emit_all fundecl.fun_body;
+  List.iter emit_call_gc !call_gc_sites;
+  List.iter emit_call_bound_error !bound_error_sites;
+  assert (List.length !call_gc_sites = num_call_gc);
+  assert (List.length !bound_error_sites = num_check_bound);
+  cfi_endproc();
+  `	.type	{emit_symbol fundecl.fun_name}, %function\n`;
+  `	.size	{emit_symbol fundecl.fun_name}, .-{emit_symbol fundecl.fun_name}\n`;
+  emit_literals()
+
+(* Emission of data *)
+
+let emit_item = function
+  | Cglobal_symbol s -> `	.globl	{emit_symbol s}\n`;
+  | Cdefine_symbol s -> `{emit_symbol s}:\n`
+  | Cint8 n -> `	.byte	{emit_int n}\n`
+  | Cint16 n -> `	.short	{emit_int n}\n`
+  | Cint32 n -> `	.long	{emit_nativeint n}\n`
+  | Cint n -> `	.quad	{emit_nativeint n}\n`
+  | Csingle f -> emit_float32_directive ".long" (Int32.bits_of_float f)
+  | Cdouble f -> emit_float64_directive ".quad" (Int64.bits_of_float f)
+  | Csymbol_address s -> `	.quad	{emit_symbol s}\n`
+  | Cstring s -> emit_string_directive "	.ascii  " s
+  | Cskip n -> if n > 0 then `	.space	{emit_int n}\n`
+  | Calign n -> `	.align	{emit_int(Misc.log2 n)}\n`
+
+let data l =
+  `	.data\n`;
+  `	.align 3\n`;
+  List.iter emit_item l
+
+(* Beginning / end of an assembly file *)
+
+let begin_assembly() =
+  reset_debug_info();
+  `	.file	\"\"\n`;  (* PR#7037 *)
+  let lbl_begin = Compilenv.make_symbol (Some "data_begin") in
+  `	.data\n`;
+  `	.globl	{emit_symbol lbl_begin}\n`;
+  `{emit_symbol lbl_begin}:\n`;
+  let lbl_begin = Compilenv.make_symbol (Some "code_begin") in
+  `	.text\n`;
+  `	.globl	{emit_symbol lbl_begin}\n`;
+  `{emit_symbol lbl_begin}:\n`
+
+let end_assembly () =
+  let lbl_end = Compilenv.make_symbol (Some "code_end") in
+  `	.text\n`;
+  `	.globl	{emit_symbol lbl_end}\n`;
+  `{emit_symbol lbl_end}:\n`;
+  let lbl_end = Compilenv.make_symbol (Some "data_end") in
+  `	.data\n`;
+  `	.globl	{emit_symbol lbl_end}\n`;
+  `{emit_symbol lbl_end}:\n`;
+  `	.long	0\n`;
+  let lbl = Compilenv.make_symbol (Some "frametable") in
+  `	.globl	{emit_symbol lbl}\n`;
+  `{emit_symbol lbl}:\n`;
+  emit_frames
+    { efa_code_label = (fun lbl ->
+                       `	.type	{emit_label lbl}, %function\n`;
+                       `	.quad	{emit_label lbl}\n`);
+      efa_data_label = (fun lbl ->
+                       `	.type	{emit_label lbl}, %object\n`;
+                       `	.quad	{emit_label lbl}\n`);
+      efa_16 = (fun n -> `	.short	{emit_int n}\n`);
+      efa_32 = (fun n -> `	.long	{emit_int32 n}\n`);
+      efa_word = (fun n -> `	.quad	{emit_int n}\n`);
+      efa_align = (fun n -> `	.align	{emit_int(Misc.log2 n)}\n`);
+      efa_label_rel = (fun lbl ofs ->
+                           `	.long	{emit_label lbl} - . + {emit_int32 ofs}\n`);
+      efa_def_label = (fun lbl -> `{emit_label lbl}:\n`);
+      efa_string = (fun s -> emit_string_directive "	.asciz	" s) };
+  `	.type	{emit_symbol lbl}, %object\n`;
+  `	.size	{emit_symbol lbl}, .-{emit_symbol lbl}\n`;
+  begin match Config.system with
+  | "linux" ->
+      (* Mark stack as non-executable *)
+      `	.section	.note.GNU-stack,\"\",%progbits\n`
+  | _ -> ()
+  end
diff -purN ocaml-4.05.0.orig/asmcomp/arm64/selection.ml ocaml-4.05.0/asmcomp/arm64/selection.ml
--- ocaml-4.05.0.orig/asmcomp/arm64/selection.ml	2018-07-02 14:14:33.662238577 +0200
+++ ocaml-4.05.0/asmcomp/arm64/selection.ml	2018-07-02 14:14:43.762280689 +0200
@@ -82,8 +82,8 @@ let inline_ops =
   [ "sqrt"; "caml_bswap16_direct"; "caml_int32_direct_bswap";
     "caml_int64_direct_bswap"; "caml_nativeint_direct_bswap" ]
 
-let use_direct_addressing symb =
-  (not !Clflags.dlcode) || Compilenv.symbol_in_current_unit symb
+let use_direct_addressing _symb =
+  not !Clflags.dlcode
 
 (* Instruction selection *)
 
diff -purN ocaml-4.05.0.orig/Changes ocaml-4.05.0/Changes
--- ocaml-4.05.0.orig/Changes	2018-07-02 14:14:33.612238369 +0200
+++ ocaml-4.05.0/Changes	2018-07-02 14:14:43.762280689 +0200
@@ -135,6 +135,10 @@ OCaml 4.05.0 (13 Jul 2017):
   (Hannes Mehnert, Guillaume Bury,
    review by Daniel Bünzli, Gabriel Scherer, Damien Doligez)
 
+- GPR#1330: when generating dynamically-linkable code on AArch64, always
+  reference symbols (even locally-defined ones) through the GOT.
+  (Mark Shinwell, review by Xavier Leroy)
+
 ### Standard library:
 
 - MPR#6975, GPR#902: Truncate function added to stdlib Buffer module
diff -purN ocaml-4.05.0.orig/Changes.orig ocaml-4.05.0/Changes.orig
--- ocaml-4.05.0.orig/Changes.orig	1970-01-01 01:00:00.000000000 +0100
+++ ocaml-4.05.0/Changes.orig	2017-07-13 10:56:44.000000000 +0200
@@ -0,0 +1,6338 @@
+OCaml 4.05.0 (13 Jul 2017):
+---------------------------
+
+(Changes that can break existing programs are marked with a "*")
+
+### Language features:
+
+### Code generation and optimizations:
+
+- MPR#7201, GPR#954: Correct wrong optimisation of "0 / <expr>"
+  and "0 mod <expr>" in the case when <expr> was a non-constant
+  evaluating to zero
+  (Mark Shinwell, review by Gabriel Scherer, Leo White and Xavier Leroy)
+
+- MPR#7357, GPR#832: Improve compilation time for toplevel
+  include(struct ... end : sig ... end)
+  (Alain Frisch, report by Hongbo Zhang, review by Jacques Garrigue)
+
+- MPR#7533, GPR#1173: Correctly perform side effects for certain
+  cases of "/" and "mod"
+  (Mark Shinwell, report by Jan Mitgaard)
+
+- GPR#504: Instrumentation support for fuzzing with afl-fuzz.
+  (Stephen Dolan, review by Alain Frisch, Pierre Chambart, Mark
+  Shinwell, Gabriel Scherer and Damien Doligez)
+
+- GPR#863, GPR#1068, GPR#1069: Optimise matches with constant
+  results to lookup tables.
+  (Stephen Dolan, review by Gabriel Scherer, Pierre Chambart,
+  Mark Shinwell, and bug report by Gabriel Scherer)
+
+- GPR#1150: Fix typo in arm64 assembler directives
+  (KC Sivaramakrishnan)
+
+### Runtime system:
+
+- MPR#385, GPR#953: Add caml_startup_exn
+  (Mark Shinwell)
+
+- MPR#7423, GPR#946: expose new exception-raising functions
+  `void caml_{failwith,invalid_argument}_value(value msg)`
+  in addition to
+  `void caml_{failwith,invalid_argument}(char const *msg)`.
+  The previous functions would not free their message argument, so
+  were inconvient for dynamically-allocated messages; the messages
+  passed to the new functions are handled by the garbage collector.
+  (Gabriel Scherer, review by Mark Shinwell, request by Immanuel Litzroth)
+
+- MPR#7557, GPR#1213: More security for getenv
+  (Damien Doligez, reports by Seth Arnold and Eric Milliken, review by
+  Xavier Leroy, David Allsopp, Stephen Dolan, Hannes Mehnert)
+
+- GPR#795: remove 256-character limitation on Sys.executable_name
+  (Xavier Leroy)
+
+- GPR#891: Use -fno-builtin-memcmp when building runtime with gcc.
+  (Leo White)
+
+### Type system:
+
+- MPR#6608, GPR#901: unify record types when overriding all fields
+  (Tadeu Zagallo and Gabriel Scherer, report by Jeremy Yallop,
+  review by David Allsopp, Jacques Garrigue)
+
+* MPR#7414, GPR#929: Soundness bug with non-generalized type variables and
+  functors.
+  (Jacques Garrigue, report by Leo White)
+
+### Compiler user-interface and warnings:
+
+- MPR#7050, GPR#748 GPR#843 GPR#864: new `-args/-args0 <file>` parameters to
+  provide extra command-line arguments in a file -- see documentation.
+  User programs may implement similar options using the new `Expand`
+  constructor of the `Arg` module.
+  (Bernhard Schommer, review by Jérémie Dimino, Gabriel Scherer
+   and Damien Doligez, discussion with Alain Frisch and Xavier Leroy,
+   feature request from the Coq team)
+
+- MPR#7137, GPR#960: "-open" command line flag now accepts
+  a module path (not a module name)
+  (Arseniy Alekseyev and Leo White)
+
+- MPR#7172, GPR#970: add extra (ocamlc -config) options
+  int_size, word_size, ext_exe
+  (Gabriel Scherer, request by Daniel Bünzli)
+
+- MPR#7315, GPR#736: refine some error locations
+  (Gabriel Scherer and Alain Frisch, report by Matej Košík)
+
+- MPR#7473, GPR#1025: perform proper globbing for command-line arguments on
+  Windows
+  (Jonathan Protzenko)
+
+- MPR#7479: make sure "ocamlc -pack" is only given .cmo and .cmi files,
+  and that "ocamlopt -pack" is only given .cmx and .cmi files.
+  (Xavier Leroy)
+
+- GPR#796: allow compiler plugins to declare their own arguments.
+  (Fabrice Le Fessant)
+
+- GPR#829: better error when opening a module aliased to a functor
+  (Alain Frisch)
+
+- GPR#911: ocamlc/ocamlopt do not pass warnings-related options to C
+  compiler when called to compile third-party C source files
+  (Sébastien Hinderer, review by Adrien Nader and David Allsopp)
+
+- GPR#915: fix -dsource (pprintast.ml) bugs
+  (Runhang Li, review by Alain Frisch)
+
+* GPR#933: ocamlopt -p now reports an error on platforms that do not
+  support profiling with gprof; dummy profiling libraries are no longer
+  installed on such platforms.
+  This can be tested with ocamlopt -config
+  (Sébastien Hinderer)
+
+- GPR#1009: "ocamlc -c -linkall" and "ocamlopt -c -linkall" can now be used
+  to set the "always link" flag on individual compilation units.  This
+  controls linking with finer granularity than "-a -linkall", which sets
+  the "always link" flag on all units of the given library.
+  (Xavier Leroy)
+
+- GPR#1015: add option "-plugin PLUGIN" to ocamldep too. Use compilerlibs
+  to build ocamldep.
+  (Fabrice Le Fessant)
+
+- GPR#1027: various improvements to -dtimings, mostly including time
+  spent in subprocesses like preprocessors
+  (Valentin Gatien-Baron, review by Gabriel Scherer)
+
+- GPR#1098: the compiler now takes the boolean "OCAML_COLOR" environment
+  variable into account if "-color" is not provided.  This allows users
+  to override the default behaviour without modifying invocations of ocaml
+  manually.
+  (Hannes Mehnert, Guillaume Bury,
+   review by Daniel Bünzli, Gabriel Scherer, Damien Doligez)
+
+### Standard library:
+
+- MPR#6975, GPR#902: Truncate function added to stdlib Buffer module
+  (Dhruv Makwana, review by Alain Frisch and Gabriel Scherer)
+
+- MPR#7279, GPR#710: `Weak.get_copy` `Ephemeron.*_copy` doesn't copy
+  custom blocks anymore
+  (François Bobot, Alain Frisch, bug reported by Martin R. Neuhäußer,
+  review by Thomas Braibant and Damien Doligez)
+
+* MPR#7500, GPR#1081: Remove Uchar.dump
+  (Daniel Bünzli)
+
+- GPR#760: Add a functions List.compare_lengths and
+  List.compare_length_with to avoid full list length computations
+  (Fabrice Le Fessant, review by Leo White, Josh Berdine and Gabriel Scherer)
+
+- GPR#778: Arg: added option Expand that allows to expand a string
+  argument to a string array of new arguments
+  (Bernhard Schommer, review by Gabriel Scherer and Jérémie Dimino)
+
+- GPR#849: Expose a Spacetime.enabled value
+  (Leo White)
+
+- GPR#885: Option-returning variants of stdlib functions
+  (Alain Frisch, review by David Allsopp and Bart Jacobs)
+
+- GPR#869: Add find_first, find_first_opt, find_last, find_last_opt to
+  maps and sets.  Find the first or last binding or element
+  satisfying a monotonic predicate.
+  (Gabriel de Perthuis, with contributions from Alain Frisch, review by
+  Hezekiah M. Carty and Simon Cruanes, initial report by Gerd Stolpmann)
+
+- GPR#875: Add missing functions to ArrayLabels, BytesLabels,
+  ListLabels, MoreLabels, StringLabels so they are compatible with
+  non-labeled counterparts. Also add missing @@ocaml.deprecated attributes
+  in StringLabels and BytesLabels.
+  (Roma Sokolov, review by Gabriel Scherer, Jacques Garrigue,
+   Gabriel Radanne, Alain Frisch)
+
+- GPR#999: Arg, do not repeat the usage message thrice when reporting an error
+  (this was a regression in 4.03)
+  (Florian Angeletti, review by Gabriel Scherer)
+
+- GPR#1042: Fix escaping of command-line arguments in
+  Unix.create_process{,_env} under Windows.  Arguments with tabs should now
+  be received verbatim by the child process.
+  (Nicolas Ojeda Bar, Andreas Hauptmann review by Xavier Leroy)
+
+### Debugging and profiling:
+
+- MPR#7258: ocamldebug's "install_printer" command had problems with
+  module aliases
+  (Xavier Leroy)
+
+- GPR#378: Add [Printexc.raise_with_backtrace] to raise an exception using
+  an explicit backtrace
+  (François Bobot, review by Gabriel Scherer, Xavier Leroy, Damien Doligez,
+   Frédéric Bour)
+
+### Manual and documentation:
+
+- MPR#6597, GPR#1030: add forward references to language extensions
+  that extend non-terminal symbols in the language reference section.
+  (Florian Angeletti, review by Gabriel Scherer)
+
+- MPR#7497, GPR#1095: manual, enable numbering for table of contents
+  (Florian Angeletti, request by Daniel Bünzli)
+
+- MPR#7539, GPR#1181: manual, update dead links in ocamldoc chapter
+  (Florian Angeletti)
+
+- GPR#633: manpage and manual documentation for the `-opaque` option
+  (Konstantin Romanov, Gabriel Scherer, review by Mark Shinwell)
+
+- GPR#751, GPR#925: add a HACKING.adoc file to contain various
+  tips and tricks for people hacking on the repository. See also
+  CONTRIBUTING.md for advice on sending contributions upstream.
+  (Gabriel Scherer and Gabriel Radanne, review by David Allsopp,
+  inspired by John Whitington)
+
+- GPR#916: new tool lintapidiff, use it to update the manual with
+  @since annotations for API changes introduced between 4.00-4.05.
+  (Edwin Török, review by Gabriel Scherer, discussion with Alain Frisch,
+   David Allsopp, Sébastien Hinderer, Damien Doligez and Xavier Leroy)
+
+- GPR#939: activate the caml_example environment in the language
+  extensions section of the manual. Convert some existing code
+  examples to this format.
+  (Florian Angeletti)
+
+- GPR#1082: clarify that the use of quoted string for preprocessed
+  foreign quotations still requires the use of an extension node
+  [%foo ...] to mark non-standard interpretation.
+  (Gabriel Scherer, request by Matthew Wahab in GPR#1066,
+   review by Florian Angeletti)
+
+### Other libraries:
+
+- MPR#7158: Event.sync, Mutex.create, Condition.create cause too many GCs.
+  The fix is to no longer consider mutexes and condition variables
+  as rare kernel resources.
+  (Xavier Leroy)
+
+- MPR#7264: document the different behaviors of Unix.lockf under POSIX
+  and under Win32.
+  (Xavier Leroy, report by David Allsopp)
+
+- MPR#7339, GPR#787: Support the '0 dimension' case for bigarrays
+  (see Bigarray documentation)
+  (Laurent Mazare,
+   review by Gabriel Scherer, Alain Frisch and Hezekiah M. Carty)
+
+* MPR#7342, GPR#797: fix Unix.read on pipes with no data left on Windows
+  it previously raised an EPIPE error, it now returns 0 like other OSes
+  (Jonathan Protzenko, review by Andreas Hauptmann and Damien Doligez)
+
+- GPR#650: in the Unix library, add `?cloexec:bool` optional arguments to
+  functions that create file descriptors (`dup`, `dup2`, `pipe`, `socket`,
+  `socketpair`, `accept`).  Implement these optional arguments in the
+  most atomic manner provided by the operating system to set (or clear)
+  the close-on-exec flag at the same time the file descriptor is created,
+  reducing the risk of race conditions with `exec` or `create_process`
+  calls running in other threads, and improving security.  Also: add a
+  `O_KEEPEXEC` flag for `openfile` by symmetry with `O_CLOEXEC`.
+  (Xavier Leroy, review by Mark Shinwell, David Allsopp and Alain Frisch,
+   request by Romain Beauxis)
+
+- GPR#996: correctly update caml_top_of_stack in systhreads
+  (Fabrice Le Fessant)
+
+### Toplevel:
+
+- MPR#7060, GPR#1035: Print exceptions in installed custom printers
+  (Tadeu Zagallo, review by David Allsopp)
+
+### Tools:
+
+- MPR#5163: ocamlobjinfo, dump globals defined by bytecode executables
+  (Stéphane Glondu)
+
+- MPR#7333: ocamldoc, use the first sentence of text file as
+  a short description in overviews.
+  (Florian Angeletti)
+
+- GPR#848: ocamldoc, escape link targets in HTML output
+  (Etienne Millon, review by Gabriel Scherer, Florian Angeletti and
+  Daniel Bünzli)
+
+- GPR#986: ocamldoc, use relative paths in error message
+  to solve ocamlbuild+doc usability issue (ocaml/ocamlbuild#79)
+  (Gabriel Scherer, review by Florian Angeletti, discussion with Daniel Bünzli)
+
+- GPR#1017: ocamldoc, add an option to detect code fragments that could be
+  transformed into a cross-reference to a known element.
+  (Florian Angeletti, review and suggestion by David Allsopp)
+
+- clarify ocamldoc text parsing error messages
+  (Gabriel Scherer)
+
+### Compiler distribution build system:
+
+- MPR#7377: remove -std=gnu99 for newer gcc versions
+  (Damien Doligez, report by ygrek)
+
+- MPR#7452, GPR#1228: tweak GCC options to try to avoid the
+  Skylake/Kaby lake bug
+  (Damien Doligez, review by David Allsopp, Xavier Leroy and Mark Shinwell)
+
+- GPR#693: fail on unexpected errors or warnings within caml_example
+  environment.
+  (Florian Angeletti)
+
+- GPR#803: new ocamllex-based tool to extract bytecode compiler
+  opcode information from C headers.
+  (Nicolas Ojeda Bar)
+
+- GPR#827: install missing mli and cmti files, new make target
+  install-compiler-sources for installation of compiler-libs ml files
+  (Hendrik Tews)
+
+- GPR#887: allow -with-frame-pointers if clang is used as compiler on Linux
+  (Bernhard Schommer)
+
+- GPR#898: fix locale-dependence of primitive list order,
+  detected through reproducible-builds.org.
+  (Hannes Mehnert, review by Gabriel Scherer and Ximin Luo)
+
+- GPR#907: Remove unused variable from the build system
+  (Sébastien Hinderer, review by whitequark, Gabriel Scherer, Adrien Nader)
+
+- GPR#911: Clarify the use of C compiler related variables in the build system.
+  (Sébastien Hinderer, review by Adrien Nader, Alain Frisch, David Allsopp)
+
+- GPR#919: use clang as preprocessor assembler if clang is used as compiler
+  (Bernhard Schommer)
+
+- GPR#927: improve the detection of hashbang support in the configure script
+  (Armaël Guéneau)
+
+- GPR#932: install ocaml{c,lex}->ocaml{c,lex}.byte symlink correctly
+  when the opt target is built but opt.opt target is not.
+  (whitequark, review by Gabriel Scherer)
+
+- GPR#935: allow build in Android's termux
+  (ygrek, review by Gabriel Scherer)
+
+- GPR#984: Fix compilation of compiler distribution when Spacetime
+  enabled
+  (Mark Shinwell)
+
+- GPR#991: On Windows, fix installation when native compiler is not
+  built
+  (Sébastien Hinderer, review by David Allsopp)
+
+- GPR#1033: merge Unix and Windows build systems in the root directory
+  (Sébastien Hinderer, review by Damien Doligez and Adrien Nader)
+
+- GPR#1047: Make .depend files generated for C sources more portable
+  (Sébastien Hinderer, review by Xavier Leroy and David Allsopp)
+
+- GPR#1076: Simplify ocamlyacc's build system
+  (Sébastien Hinderer, review by David Allsopp)
+
+### Compiler distribution build system: Makefile factorization
+
+The compiler distribution build system (the set of Makefiles used to
+build the compiler distribution) traditionally had separate Makefiles
+for Unix and Windows, which lead to some amount of duplication and
+subtle differences and technical debt in general -- for people working
+on the compiler distribution, but also cross-compilation or porting to
+new systems. During the 4.05 development period, Sébastien Hinderer
+worked on harmonizing the build rules and merging the two build
+systems.
+
+* Some changes were made to the config/Makefile file which
+  is exported as $(ocamlc -where)/Makefile.config, and on
+  which some advanced users might rely. The changes are
+  as follows:
+  - a BYTERUN variable was added that points to the installed ocamlrun
+  - the PARTIALLD variable was removed (PACKLD is more complete)
+  - the always-empty DLLCCCOMPOPTS was removed
+  - the SHARED variable was removed; its value is "shared" or "noshared",
+    which duplicates the existing and more convenient
+    SUPPORTS_SHARED_LIBRARIES variable whose value is "true" or "false".
+
+  Note that Makefile.config may change further in the future and relying
+  on it is a bit fragile. We plan to make `ocamlc -config` easier to use
+  for scripting purposes, and have a stable interface there. If you rely
+  on Makefile.config, you may want to get in touch with Sébastien Hinderer
+  or participate to MPR#7116 (Allow easy retrieval of Makefile.config's values)
+  or MPR#7172 (More information in ocamlc -config).
+
+The complete list of changes is listed below.
+
+- GPR#705: update Makefile.nt so that ocamlnat compiles
+  for non-Cygwin Windows ports.
+  (Sébastien Hinderer, review by Alain Frisch)
+
+- GPR#729: Make sure ocamlnat is built with a $(EXE) extension, merge
+  rules between Unix and Windows Makefiles
+  (Sébastien Hinderer, review by Alain Frisch)
+
+- GPR#762: Merge build systems in the yacc/ directory.
+  (Sébastien Hinderer, review by David Allsopp, Alain Frisch)
+
+- GPR#764: Merge build systems in the debugger/ directory.
+  (Sébastien Hinderer, review by Alain Frisch)
+
+- GPR#785: Merge build systems in otherlibs/systhreads/
+  (Sébastien Hinderer, review by Alain Frisch, David Allsopp,
+   testing and regression fix by Jérémie Dimino)
+
+- GPR#788: Merge build systems in subdirectories of otherlibs/.
+  (Sébastien Hinderer, review by Alain Frisch)
+
+- GPR#808, GPR#906: Merge Unix and Windows build systems
+  in the ocamldoc/ directory
+  (Sébastien Hinderer, review by Alain Frisch)
+
+- GPR#812: Merge build systems in the tools/ subdirectory
+  (Sébastien Hinderer, review by Alain Frisch)
+
+- GPR#866: Merge build systems in the stdlib/ directory
+  (Sébastien Hinderer, review by David Allsopp and Adrien Nader)
+
+- GPR#941: Merge Unix and Windows build systems in the asmrun/ directory
+  (Sébastien Hinderer, review by Mark Shinwell, Adrien Nader,
+   Xavier Leroy, David Allsopp, Damien Doligez)
+
+- GPR#981: Merge build systems in the byterun/ directory
+  (Sébastien Hinderer, review by Adrien Nader)
+
+- GPR#1033, GPR#1048: Merge build systems in the root directory
+  (Sébastien Hinderer, review by Adrien Nader and Damien Doligez,
+   testing and regression fix by Andreas Hauptmann)
+
+### Internal/compiler-libs changes:
+
+- GPR#673: distinguish initialization of block fields from mutation in lambda.
+  (Frédéric Bour, review by Xavier Leroy, Stephen Dolan and Mark Shinwell)
+
+- GPR#744, GPR#781: fix duplicate self-reference in imported cmi_crcs
+  list in .cmti files + avoid rebuilding cmi_info record when creating
+  .cmti files
+  (Alain Frisch, report by Daniel Bünzli, review by Jérémie Dimino)
+
+- GPR#881: change `Outcometree.out_variant` to be more general.
+  `Ovar_name of out_ident * out_type list` becomes `Ovar_type of out_type`.
+  (Valentin Gatien-Baron, review by Leo White)
+
+- GPR#908: refactor PIC-handling in the s390x backend
+  (Gabriel Scherer, review by Xavier Leroy and Mark Shinwell)
+
+### Bug fixes
+
+- MPR#5115: protect all byterun/fail.c functions against
+  uninitialized caml_global_data (only changes the bytecode behavior)
+  (Gabriel Scherer, review by Xavier Leroy)
+
+- MPR#6136, GPR#967: Fix Closure so that overapplication evaluation order
+  matches the bytecode compiler and Flambda.
+  (Mark Shinwell, report by Jeremy Yallop, review by Frédéric Bour)
+
+- MPR#6550, GPR#1094: Allow creation of empty .cmxa files on macOS
+  (Mark Shinwell)
+
+- MPR#6594, GPR#955: Remove "Istore_symbol" specific operation on x86-64.
+  This is more robust and in particular avoids assembly failures on Win64.
+  (Mark Shinwell, review by Xavier Leroy, testing by David Allsopp and
+   Olivier Andrieu)
+
+- MPR#6903: Unix.execvpe doesn't change environment on Cygwin
+  (Xavier Leroy, report by Adrien Nader)
+
+- MPR#6987: Strange error message probably caused by
+  universal variable escape (with polymorphic variants)
+  (Jacques Garrigue, report by Mikhail Mandrykin and Leo White)
+
+- MPR#7216, GPR#949: don't require double parens in Functor((val x))
+  (Jacques Garrigue, review by Valentin Gatien-Baron)
+
+- MPR#7331: ocamldoc, avoid infinite loop in presence of self alias,
+  i.e. module rec M:sig end = M
+  (Florian Angeletti, review Gabriel Scherer)
+
+- MPR#7346, GPR#966: Fix evaluation order problem whereby expressions could
+  be incorrectly re-ordered when compiling with Flambda.  This also fixes one
+  example of evaluation order in the native code compiler not matching the
+  bytecode compiler (even when not using Flambda)
+  (Mark Shinwell, Leo White, code review by Pierre Chambart)
+
+- MPR#7348: Private row variables can escape their scope
+  (Jacques Garrigue, report by Leo White)
+
+- MPR#7407: Two not-quite-standard C idioms rejected by SUNWSPro compilers
+  (Xavier Leroy)
+
+- MPR#7421: Soundness bug with GADTs and lazy
+  (Jacques Garrigue, report by Leo White)
+
+- MPR#7424: Typechecker diverges on unboxed type declaration
+  (Jacques Garrigue, report by Stephen Dolan)
+
+- MPR#7426, GPR#965: Fix fatal error during object compilation (also
+  introduces new [Pfield_computed] and [Psetfield_computed] primitives)
+  (Mark Shinwell, report by Ulrich Singer)
+
+- MPR#7427, GPR#959: Don't delete let bodies in Cmmgen
+  (Mark Shinwell, report by Valentin Gatien-Baron)
+
+- MPR#7432: Linking modules compiled with -labels and -nolabels is not safe
+  (Jacques Garrigue, report by Jeremy Yallop)
+
+- MPR#7437: typing assert failure with nonrec priv
+  (Jacques Garrigue, report by Anil Madhavapeddy)
+
+- MPR#7438: warning +34 exposes #row with private types
+  (Alain Frisch, report by Anil Madhavapeddy)
+
+- MPR#7443, GPR#990: spurious unused open warning with local open in patterns
+  (Florian Angeletti, report by Gabriel Scherer)
+
+- MPR#7504: fix warning 8 with unconstrained records
+  (Florian Angeletti, report by John Whitington)
+
+- MPR#7456, GPR#1092: fix slow compilation on source files containing a lot
+  of similar debugging information location entries
+  (Mark Shinwell)
+
+- GPR#795: remove 256-character limitation on Sys.executable_name
+  (Xavier Leroy)
+
+- GPR#805, GPR#815, GPR#833: check for integer overflow in String.concat
+  (Jeremy Yallop,
+   review by Damien Doligez, Alain Frisch, Daniel Bünzli, Fabrice Le Fessant)
+
+- GPR#881: short-paths did not apply to some polymorphic variants
+  (Valentin Gatien-Baron, review by Leo White)
+
+- GPR#886: Fix Ctype.moregeneral's handling of row_name
+  (Leo White, review by Jacques Garrigue)
+
+- GPR#934: check for integer overflow in Bytes.extend
+  (Jeremy Yallop, review by Gabriel Scherer)
+
+- GPR#956: Keep possibly-effectful expressions when optimizing multiplication
+  by zero.
+  (Jeremy Yallop, review by Nicolás Ojeda Bär, Xavier Leroy and Mark Shinwell)
+
+- GPR#977: Catch Out_of_range in ocamldebug's "list" command
+  (Yunxing Dai)
+
+- GPR#983: Avoid removing effectful expressions in Closure, and
+  eliminate more non-effectful ones
+  (Alain Frisch, review by Mark Shinwell and Gabriel Scherer)
+
+- GPR#987: alloc_sockaddr: don't assume a null terminator. It is not inserted
+  on macOS by system calls that fill in a struct sockaddr (e.g. getsockname).
+  (Anton Bachin)
+
+- GPR#998: Do not delete unused closures in un_anf.ml.
+  (Leo White, review by Mark Shinwell and Pierre Chambart)
+
+- GPR#1019: Fix fatal error in Flambda mode "[functions] does not map set of
+  closures ID"
+  (Pierre Chambart, code review by Mark Shinwell and Leo White)
+
+- GPR#1075: Ensure that zero-sized float arrays have zero tags.
+  (Mark Shinwell, Leo White, review by Xavier Leroy)
+
+* GPR#1088: Gc.minor_words now returns accurate numbers.
+  (Stephen Dolan, review by Pierre Chambart and Xavier Leroy)
+
+OCaml 4.04.2 (23 Jun 2017):
+---------------------------
+
+### Security fix:
+
+- PR#7557: Local privilege escalation issue with ocaml binaries.
+  (Damien Doligez, report by Eric Milliken, review by Xavier Leroy)
+
+OCaml 4.04.1 (14 Apr 2017):
+---------------------------
+
+- PR#7501, GPR#1089: Consider arrays of length zero as constants
+  when using Flambda.
+  (Pierre Chambart, review by Mark Shinwell and Leo White)
+
+### Standard library:
+
+- PR#7403, GPR#894: fix a bug in Set.map as introduced in 4.04.0
+  (Gabriel Scherer, report by Thomas Leonard)
+
+### Tools:
+
+- PR#7411: ocamldoc, avoid nested <pre> tags in module description.
+  (Florian Angeletti, report by user 'kosik')
+
+- PR#7488: ocamldoc, wrong Latex output for variant types
+  with constructors without arguments.
+  (Florian Angeletti, report by Xavier Leroy)
+
+### Build system:
+
+- PR#7373, GPR#1023: New flexlink target in Makefile.nt to bootstrap the
+  flexlink binary only, rather than the flexlink binary and the FlexDLL C
+  objects.
+  (David Allsopp)
+
+### Bug fixes
+
+- PR#7369: Str.regexp raises "Invalid_argument: index out of bounds"
+  (Damien Doligez, report by John Whitington)
+
+- PR#7373, GPR#1023: Fix ocamlmklib with bootstrapped FlexDLL. Bootstrapped
+  FlexDLL objects are now installed to a subdirectory flexdll of the Standard
+  Library which allows the compilers to pick them up explicitly and also
+  ocamlmklib to include them without unnecessarily adding the entire Standard
+  Library.
+  (David Allsopp)
+
+- PR#7385, GPR#1057: fix incorrect timestamps returned by Unix.stat on Windows
+  when either TZ is set or system date is in DST.
+  (David Allsopp, report and initial fix by Nicolás Ojeda Bär, review and
+   superior implementation suggestion by Xavier Leroy)
+
+- PR#7405, GPR#903: s390x: Fix address of caml_raise_exn in native dynlink modules
+  (Richard Jones, review by Xavier Leroy)
+
+- PR#7417, GPR#930: ensure 16 byte stack alignment inside caml_allocN on x86-64
+  for ocaml build with WITH_FRAME_POINTERS defined
+  (Christoph Cullmann)
+
+- PR#7456, GPR#1092: fix slow compilation on source files containing a lot
+  of similar debugging information location entries
+  (Mark Shinwell)
+
+- PR#7457: a case of double free in the systhreads library (POSIX implementation)
+  (Xavier Leroy, report by Chet Murthy)
+
+- PR#7460, GPR#1011: catch uncaught exception when unknown files are passed
+  as argument (regression in 4.04.0)
+  (Bernhard Schommer, review by Florian Angeletti and Gabriel Scherer,
+   report by Stephen Dolan)
+
+- PR#7505: Memory cannot be released after calling
+    Bigarray.Genarray.change_layout.
+  (Damien Doligez and Xavier Leroy, report by Liang Wang)
+
+- PR#7511, GPR#1133: Unboxed type with unboxed argument should not be accepted
+  (Damien Doligez, review by Jeremy Yallop and Leo White)
+
+- GPR#912: Fix segfault in Unix.create_process on Windows caused by wrong header
+  configuration.
+  (David Allsopp)
+
+- GPR#980: add dynlink options to ocamlbytecomp.cmxa to allow ocamlopt.opt
+  to load plugins. See http://github.com/OCamlPro/ocamlc-plugins for examples.
+  (Fabrice Le Fessant, review by David Allsopp)
+
+- GPR#992: caml-types.el: Fix missing format argument, so that it can show kind
+  of call at point correctly.
+  (Chunhui He)
+
+- GPR#1043: Allow Windows CRLF line-endings in ocamlyacc on Unix and Cygwin.
+  (David Allsopp, review by Damien Doligez and Xavier Leroy)
+
+- GPR#1072: Fix segfault in Sys.runtime_parameters when exception backtraces
+  are enabled.
+  (Olivier Andrieu)
+
+OCaml 4.04.0 (4 Nov 2016):
+--------------------------
+
+(Changes that can break existing programs are marked with a "*")
+
+### Language features:
+
+- PR#7233: Support GADT equations on non-local abstract types
+  (Jacques Garrigue)
+
+- GPR#187, GPR#578: Local opening of modules in a pattern.
+  Syntax: "M.(p)", "M.[p]","M.[| p |]", "M.{p}"
+  (Florian Angeletti, Jacques Garrigue, review by Alain Frisch)
+
+- GPR#301: local exception declarations "let exception ... in"
+  (Alain Frisch)
+
+- GPR#508: Allow shortcut for extension on semicolons: ;%foo
+  (Jérémie Dimino)
+
+- GPR#606: optimized representation for immutable records with a single
+  field, and concrete types with a single constructor with a single argument.
+  This is triggered with a [@@unboxed] attribute on the type definition.
+  Currently mutually recursive datatypes are not well supported, this
+  limitation should be lifted in the future (see MPR#7364).
+  (Damien Doligez)
+
+### Compiler user-interface and warnings:
+
+* PR#6475, GPR#464: interpret all command-line options before compiling any
+  files, changes (improves) the semantics of repeated -o options or -o
+  combined with -c see the super-detailed commit message at
+  https://github.com/ocaml/ocaml/commit/da56cf6dfdc13c09905c2e07f1d4849c8346eec8
+  (whitequark)
+
+- PR#7139: clarify the wording of Warning 38
+  (Unused exception or extension constructor)
+  (Gabriel Scherer)
+
+* PR#7147, GPR#475: add colors when reporting errors generated by ppx rewriters.
+  Remove the `Location.errorf_prefixed` function which is no longer relevant
+  (Simon Cruanes, Jérémie Dimino)
+
+- PR#7169, GPR#501: clarify the wording of Warning 8
+  (Non-exhaustivity warning for pattern matching)
+  (Florian Angeletti, review and report by Gabriel Scherer)
+
+* GPR#591: Improve support for OCAMLPARAM: (i) do not use objects
+  files with -a, -pack, -shared; (ii) use "before" objects in the toplevel
+  (but not "after" objects); (iii) use -I dirs in the toplevel,
+  (iv) fix bug where -I dirs were ignored when using threads
+  (Marc Lasson, review by Damien Doligez and Alain Frisch)
+
+- GPR#648: New -plugin option for ocamlc and ocamlopt, to dynamically extend
+  the compilers at runtime.
+  (Fabrice Le Fessant)
+
+- GPR#684: Detect unused module declarations
+  (Alain Frisch)
+
+- GPR#706: Add a settable Env.Persistent_signature.load function so
+  that cmi files can be loaded from other sources. This can be used to
+  create self-contained toplevels.
+  (Jérémie Dimino)
+
+### Standard library:
+
+- PR#6279, GPR#553: implement Set.map
+  (Gabriel Scherer)
+
+- PR#6820, GPR#560: Add Obj.reachable_words to compute the
+  "transitive" heap size of a value
+  (Alain Frisch, review by Mark Shinwell and Damien Doligez)
+
+- GPR#473: Provide `Sys.backend_type` so that user can write backend-specific
+  code in some cases (for example,  code generator).
+  (Hongbo Zhang)
+
+- GPR#589: Add a non-allocating function to recover the number of
+  allocated minor words.
+  (Pierre Chambart, review by Damien Doligez and Gabriel Scherer)
+
+- GPR#626: String.split_on_char
+  (Alain Frisch)
+
+- GPR#669: Filename.extension and Filename.remove_extension
+  (Alain Frisch, request by Edgar Aroutiounian, review by Daniel Bünzli
+  and Damien Doligez)
+
+- GPR#674: support unknown Sys.os_type in Filename, defaulting to Unix
+  (Filename would previously fail at initialization time for
+   Sys.os_type values other than "Unix", "Win32" and "Cygwin";
+   mirage-os uses "xen")
+  (Anil Madhavapeddy)
+
+- GPR#772 %string_safe_set and %string_unsafe_set are deprecated aliases
+  for %bytes_safe_set and %bytes_unsafe_set.
+  (Hongbo Zhang and Damien Doligez)
+
+### Other libraries
+
+- MPR#4834, GPR#592: Add a Biggarray.Genarray.change_layout function
+  to switch bigarrays between C and fortran layouts.
+  (Guillaume Hennequin, review by Florian Angeletti)
+
+### Code generation and optimizations:
+
+- PR#4747, GPR#328: Optimize Hashtbl by using in-place updates of its
+  internal bucket lists.  All operations run in constant stack size
+  and are usually faster, except Hashtbl.copy which can be much
+  slower
+  (Alain Frisch)
+
+- PR#6217, GPR#538: Optimize performance of record update:
+  no more performance cliff when { foo with t1 = ..; t2 = ...; ... }
+  hits 6 updated fields
+  (Olivier Nicole, review by Thomas Braibant and Pierre Chambart)
+
+- PR#7023, GPR#336: Better unboxing strategy
+  (Alain Frisch, Pierre Chambart)
+
+- PR#7244, GPR#840: Ocamlopt + flambda requires a lot of memory
+  to compile large array literal expressions
+  (Pierre Chambart, review by Mark Shinwell)
+
+- PR#7291, GPR#780: Handle specialisation of recursive function that does
+  not always preserve the arguments
+  (Pierre Chambart, Mark Shinwell, report by Simon Cruanes)
+
+- PR#7328, GPR#702: Do not eliminate boxed int divisions by zero and
+  avoid checking twice if divisor is zero with flambda.
+  (Pierre Chambart, report by Jeremy Yallop)
+
+- GPR#427: Obj.is_block is now an inlined OCaml function instead of a
+  C external.  This should be faster.
+  (Demi Obenour)
+
+- GPR#580: Optimize immutable float records
+  (Pierre Chambart, review by Mark Shinwell)
+
+- GPR#602: Do not generate dummy code to force module linking
+  (Pierre Chambart, reviewed by Jacques Garrigue)
+
+- GPR#703: Optimize some constant string operations when the "-safe-string"
+  configure time option is enabled.
+  (Pierre Chambart)
+
+- GPR#707: Load cross module information during a meet
+  (Pierre Chambart, report by Leo White, review by Mark Shinwell)
+
+- GPR#709: Share a few more equal switch branches
+  (Pierre Chambart, review by Gabriel Scherer)
+
+- GPR#712: Small improvements to type-based optimizations for array
+  and lazy
+  (Alain Frisch, review by Pierre Chambart)
+
+- GPR#714: Prevent warning 59 from triggering on Lazy of constants
+  (Pierre Chambart, review by Leo White)
+
+- GPR#723 Sort emitted functions according to source location
+  (Pierre Chambart, review by Mark Shinwell)
+
+- Lack of type normalization lead to missing simple compilation for "lazy x"
+  (Alain Frisch)
+
+### Runtime system:
+
+- PR#7203, GPR#534: Add a new primitive caml_alloc_float_array to allocate an
+  array of floats
+  (Thomas Braibant)
+
+- PR#7210, GPR#562: Allows to register finalisation function that are
+  called only when a value will never be reachable anymore. The
+  drawbacks compared to the existing one is that the finalisation
+  function is not called with the value as argument. These finalisers
+  are registered with `GC.finalise_last`
+  (François Bobot reviewed by Damien Doligez and Leo White)
+
+- GPR#247: In previous OCaml versions, inlining caused stack frames to
+  disappear from stacktraces. This made debugging harder in presence of
+  optimizations, and flambda was going to make this worse. The debugging
+  information produced by the compiler now enables the reconstruction of the
+  original backtrace. Use `Printexc.get_raw_backtrace_next_slot` to traverse
+  the list of inlined stack frames.
+  (Frédéric Bour, review by Mark Shinwell and Xavier Leroy)
+
+- GPR#590: Do not perform compaction if the real overhead is less than expected
+  (Thomas Braibant)
+
+### Tools:
+
+- PR#7189: toplevel #show, follow chains of module aliases
+  (Gabriel Scherer, report by Daniel Bünzli, review by Thomas Refis)
+
+- PR#7248: have ocamldep interpret -open arguments in left-to-right order
+  (Gabriel Scherer, report by Anton Bachin)
+
+- PR#7272, GPR#798: ocamldoc, missing line breaks in type_*.html files
+  (Florian Angeletti)
+
+- PR#7290: ocamldoc, improved support for inline records
+  (Florian Angeletti)
+
+- PR#7323, GPR#750: ensure "ocamllex -ml" works with -safe-string
+  (Hongbo Zhang)
+
+- PR#7350, GPR#806: ocamldoc, add viewport metadata to generated html pages
+  (Florian Angeletti, request by Daniel Bünzli)
+
+- GPR#452: Make the output of ocamldep more stable
+  (Alain Frisch)
+
+- GPR#548: empty documentation comments
+  (Florian Angeletti)
+
+- GPR#575: Add the -no-version option to the toplevel
+  (Sébastien Hinderer)
+
+- GPR#598: Add a --strict option to ocamlyacc treat conflicts as errors
+  (this option is now used for the compiler's parser)
+  (Jeremy Yallop)
+
+- GPR#613: make ocamldoc use -open arguments
+  (Florian Angeletti)
+
+- GPR#718: ocamldoc, fix order of extensible variant constructors
+  (Florian Angeletti)
+
+### Debugging and profiling:
+
+- GPR#585: Spacetime, a new memory profiler (Mark Shinwell, Leo White)
+
+### Manual and documentation:
+
+- PR#7007, PR#7311: document the existence of OCAMLPARAM and
+  ocaml_compiler_internal_params
+  (Damien Doligez, reports by Wim Lewis and Gabriel Scherer)
+
+- PR#7243: warn users against using WinZip to unpack the source archive
+  (Damien Doligez, report by Shayne Fletcher)
+
+- PR#7245, GPR#565: clarification to the wording and documentation
+  of Warning 52 (fragile constant pattern)
+  (Gabriel Scherer, William, Adrien Nader, Jacques Garrigue)
+
+- #PR7265, GPR#769: Restore 4.02.3 behaviour of Unix.fstat, if the
+  file descriptor doesn't wrap a regular file (win32unix only)
+  (Andreas Hauptmann, review by David Allsopp)
+
+- PR#7288: flatten : Avoid confusion
+  (Damien Doligez, report by user 'tormen')
+
+- PR#7355: Gc.finalise and lazy values
+  (Jeremy Yallop)
+
+- GPR#842: Document that [Store_field] must not be used to populate
+  arrays of values declared using [CAMLlocalN] (Mark Shinwell)
+
+### Compiler distribution build system:
+
+- GPR#324: Compiler developers: Adding new primitives to the
+  standard runtime doesn't require anymore to run `make bootstrap`
+  (François Bobot)
+
+- GPR#384: Fix compilation using old Microsoft C Compilers not
+  supporting secure CRT functions (SDK Visual Studio 2005 compiler and
+  earlier) and standard 64-bit integer literals (Visual Studio .NET
+  2002 and earlier)
+  (David Allsopp)
+
+- GPR#507: More sharing between Unix and Windows makefiles
+  (whitequark, review by Alain Frisch)
+
+* GPR#512, GPR#587: Installed `ocamlc`, `ocamlopt`, and `ocamllex` are
+  now the native-code versions of the tools, if those versions were
+  built.
+  (Demi Obenour)
+
+- GPR#525: fix build on OpenIndiana
+  (Sergey Avseyev, review by Damien Doligez)
+
+- GPR#687: "./configure -safe-string" to get a system where
+  "-unsafe-string" is not allowed, thus giving stronger non-local
+  guarantees about immutability of strings
+  (Alain Frisch, review by Hezekiah M. Carty)
+
+### Bug fixes:
+
+* PR#6505: Missed Type-error leads to a segfault upon record access.
+  (Jacques Garrigue, extra report by Stephen Dolan)
+  Proper fix required a more restrictive approach to recursive types:
+  mutually recursive types are seen as abstract types (i.e. non-contractive)
+  when checking the well-foundedness of the recursion.
+
+* PR#6752: Nominal types and scope escaping.
+  Revert to strict scope for non-generalizable type variables, cf. Mantis.
+  Note that this is actually stricter than the behavior before 4.03,
+  cf. PR#7313, meaning that you may sometimes need to add type annotations
+  to explicitly instantiate non-generalizable type variables.
+  (Jacques Garrigue, following discussion with Jeremy Yallop,
+   Nicolas Ojeda Bar and Alain Frisch)
+
+- PR#7112: Aliased arguments ignored for equality of module types
+  (Jacques Garrigue, report by Leo White)
+
+- PR#7134: compiler forcing aliases it shouldn't while reporting type errors
+  (Jacques Garrigue, report and suggestion by sliquister)
+
+- PR#7153: document that Unix.SOCK_SEQPACKET is not really usable.
+
+- PR#7165, GPR#494: uncaught exception on invalid lexer directive
+  (Gabriel Scherer, report by KC Sivaramakrishnan using afl-fuzz)
+
+- PR#7257, GPR#583: revert a 4.03 change of behavior on (Unix.sleep 0.),
+  it now calls (nano)sleep for 0 seconds as in (< 4.03) versions.
+  (Hannes Mehnert, review by Damien Doligez)
+
+- PR#7260: GADT + subtyping compile time crash
+  (Jacques Garrigue, report by Nicolas Ojeda Bar)
+
+- PR#7269: Segfault from conjunctive constraints in GADT
+  (Jacques Garrigue, report by Stephen Dolan)
+
+- PR#7276: Support more than FD_SETSIZE sockets in Windows' emulation
+  of select
+  (David Scott, review by Alain Frisch)
+
+* PR#7278: Prevent private inline records from being mutated
+  (Alain Frisch, report by Pierre Chambart)
+
+- PR#7284: Bug in mcomp_fields leads to segfault
+  (Jacques Garrigue, report by Leo White)
+
+- PR#7285: Relaxed value restriction broken with principal
+  (Jacques Garrigue, report by Leo White)
+
+- PR#7297: -strict-sequence turns off Warning 21
+  (Jacques Garrigue, report by Valentin Gatien-Baron)
+
+- PR#7299: remove access to OCaml heap inside blocking section in win32unix
+  (David Allsopp, report by Andreas Hauptmann)
+
+- PR#7300: remove access to OCaml heap inside blocking in Unix.sleep on Windows
+  (David Allsopp)
+
+- PR#7305: -principal causes loop in type checker when compiling
+  (Jacques Garrigue, report by Anil Madhavapeddy, analysis by Leo White)
+
+- PR#7330: Missing exhaustivity check for extensible variant
+  (Jacques Garrigue, report by Elarnon *)
+
+- PR#7374: Contractiveness check unsound with constraints
+  (Jacques Garrigue, report by Leo White)
+
+- PR#7378: GADT constructors can be re-exposed with an incompatible type
+  (Jacques Garrigue, report by Alain Frisch)
+
+- PR#7389: Unsoundness in GADT exhaustiveness with existential variables
+  (Jacques Garrigue, report by Stephen Dolan)
+
+* GPR#533: Thread library: fixed [Thread.wait_signal] so that it
+  converts back the signal number returned by [sigwait] to an
+  OS-independent number
+  (Jérémie Dimino)
+
+- GPR#600: (similar to GPR#555) ensure that register typing constraints are
+  respected at N-way join points in the control flow graph
+  (Mark Shinwell)
+
+- GPR#672: Fix float_of_hex parser to correctly reject some invalid forms
+  (Bogdan Tătăroiu, review by Thomas Braibant and Alain Frisch)
+
+- GPR#700: Fix maximum weak bucket size
+  (Nicolas Ojeda Bar, review by François Bobot)
+
+- GPR#708 Allow more module aliases in strengthening (Leo White)
+
+- GPR#713, PR#7301: Fix wrong code generation involving lazy values in Flambda
+  mode
+  (Mark Shinwell, review by Pierre Chambart and Alain Frisch)
+
+- GPR#721: Fix infinite loop in flambda due to [@@specialise] annotations
+
+- GPR#779: Building native runtime on Windows could fail when bootstrapping
+  FlexDLL if there was also a system-installed flexlink
+  (David Allsopp, report Michael Soegtrop)
+
+- GPR#805, GPR#815, GPR#833: check for integer overflow in String.concat
+  (Jeremy Yallop,
+   review by Damien Doligez, Alain Frisch, Daniel Bünzli, Fabrice Le Fessant)
+
+- GPR#810: check for integer overflow in Array.concat
+  (Jeremy Yallop)
+
+- GPR#814: fix the Buffer.add_substring bounds check to handle overflow
+  (Jeremy Yallop)
+
+- GPR#880: Fix [@@inline] with default parameters in flambda (Leo White)
+
+### Internal/compiler-libs changes:
+
+- PR#7200, GPR#539: Improve, fix, and add test for parsing/pprintast.ml
+  (Runhang Li, David Sheets, Alain Frisch)
+
+- GPR#351: make driver/pparse.ml functions type-safe
+  (Gabriel Scherer, Dmitrii Kosarev, review by Jérémie Dimino)
+
+- GPR#516: Improve Texp_record constructor representation, and
+  propagate updated record type information
+  (Pierre Chambart, review by Alain Frisch)
+
+- GPR#678: Graphics.close_graph crashes 64-bit Windows ports (re-implementation
+  of PR#3963)
+  (David Allsopp)
+
+- GPR#679: delay registration of docstring after the mapper is applied
+  (Hugo Heuzard, review by Leo White)
+
+- GPR#872: don't attach (**/**) comments to any particular node
+  (Thomas Refis, review by Leo White)
+
+OCaml 4.03.0 (25 Apr 2016):
+---------------------------
+
+(Changes that can break existing programs are marked with a "*")
+
+### Language features:
+
+- PR#5528: inline records for constructor arguments
+  (Alain Frisch)
+
+- PR#6220, PR#6403, PR#6437, PR#6801:
+  Improved redundancy and exhaustiveness checks for GADTs.
+  Namely, the redundancy checker now checks whether the uncovered pattern
+  of the pattern is actually inhabited, exploding at most one wild card.
+  This is also done for exhaustiveness when there is only one case.
+  Additionally, one can now write unreachable cases, of the form
+  "pat -> .", which are treated by the redundancy check.
+  (Jacques Garrigue)
+
+- PR#6374: allow "_ t" as a short-hand for "(_, _, ..) t" for n-ary type
+  constructors
+  (Alain Frisch)
+
+- PR#6714: allow [@@ocaml.warning] on most structure and signature items:
+  values, modules, module types
+  (whitequark)
+
+- PR#6806: Syntax shortcut for putting a type annotation on a record field:
+  { f1 : typ = e } is sugar for { f1 = (e : typ) }
+  { f1 : typ } is sugar for { f1 = (f1 : typ) }
+  (Valentin Gatien-Baron, review by Jérémie Dimino)
+
+- PR#6806: Allow type annotations before the "->" in "fun <args> -> <expr>"
+  fun x y : (int * int) -> (x, y)
+  (Valentin Gatien-Baron, review by Jérémie Dimino)
+
+- GPR#26: support for "(type a b)" as syntactic sugar for "(type a) (type b)"
+  (Gabriel Scherer)
+
+- GPR#42: short functor type syntax: "S -> T" for "functor (_ : S) -> T"
+  (Leo White)
+
+- GPR#88: allow field punning in object copying expressions:
+  {< x; y; >} is sugar for {< x = x; y = y; >}
+  (Jeremy Yallop)
+
+- GPR#112: octal escape sequences for char and string literals
+  "Make it \o033[1mBOLD\o033[0m"
+  (Rafaël Bocquet, request by John Whitington)
+
+- GPR#167: allow to annotate externals' arguments and result types so
+  they can be unboxed or untagged: [@unboxed], [@untagged]. Supports
+  untagging int and unboxing int32, int64, nativeint and float.
+  (Jérémie Dimino, Mark Shinwell)
+
+- GPR#173: [@inline] and [@inlined] attributes (for function declarations
+  and call sites respectively) to control inlining
+  (Pierre Chambart, Mark Shinwell)
+
+- GPR#188: accept [@@immediate] attribute on type declarations to mark types
+  that are represented at runtime by an integer
+  (Will Crichton, reviewed by Leo White)
+
+* GPR#234: allow "[]" as a user-defined constructor. Demand parenthesis
+  around "::" when using "::" as user-defined constructor:
+  code using "| :: of ..." must change to "| (::) of ...".
+  (Runhang Li, review by Damien Doligez)
+
+- GPR#240: replace special annotations on externals by attributes:
+  * "float" is generalized to [@@unboxed]
+  * "noalloc" becomes [@@noalloc]
+  Deprecate "float" and "noalloc".
+  (Jérémie Dimino)
+
+- GPR#254: @ocaml.warn_on_literal_pattern attribute on constructors to
+  warn when the argument is matches against a constant pattern.  This
+  attribute is applied on predefined exception constructors which
+  carry purely informational (with no stability guarantee) messages.
+  (Alain Frisch)
+
+- GPR#268: hexadecimal notation for floating-point literals: -0x1.ffffp+987
+  In OCaml source code, FP literals can be written using the hexadecimal
+  notation 0x<mantissa in hex>p<exponent> from ISO C99.
+  (Xavier Leroy)
+
+- GPR#273: allow to get the extension slot of an extension constructor
+  by writing [%extension_constructor <path>]
+  (Jérémie Dimino)
+
+- GPR#282: change short-paths penalty heuristic to assign the same cost to
+  idents containing double underscores as to idents starting with an underscore
+  (Thomas Refis, Leo White)
+
+- PR#6681 GPR#326: signature items are now accepted as payloads for
+  extension and attributes, using the syntax [%foo: SIG ] or [@foo: SIG ].
+  Examples: "[%%client: val foo : int]" or "val%client foo : int".
+  (Alain Frisch and Gabriel Radanne)
+
+* GPR#342: Allow shortcuts for extension and attributes on all keywords:
+  module%foo, class[@foo], etc.
+  The attribute in "let[@foo] .. in .." is now attached to the value binding,
+  not to the expression.
+  (Gabriel Radanne)
+
+### Compilers:
+
+* PR#4231, PR#5461: warning 31 is now fatal by default
+  (Warning 31: A module is linked twice in the same executable.)
+  This is an interim solution; double-linking of modules has dangerous
+  semantics, eg. exception constructors end up with two distinct declarations.
+  (Alain Frisch)
+
+- PR#4800: better compilation of tuple assignment
+  (Gabriel Scherer and Alain Frisch)
+
+- PR#5995: keep -for-pack into account to name exceptions;
+  -for-pack should now be used during bytecode compilation as well
+  (Alain Frisch, report by Christophe Troestler)
+
+- PR#6400: better error message for '_' used as an expression
+  (Alain Frisch, report by whitequark)
+
+- PR#6501: harden the native-code generator against certain uses of "%identity"
+  (Xavier Leroy, report by Antoine Miné)
+
+- PR#6636: add --version option
+  (whitequark)
+
+- PR#6679: fix pprintast printing of constraints in type declarations
+  (Alain Frisch, report by Jun Furuse)
+
+- PR#6737: fix Typedtree attributes on (fun x -> body) expressions
+  (Alain Frisch, report by Oleg Kiselyov)
+
+* PR#6865: remove special case for parsing "let _ = expr" in structures
+  (Jérémie Dimino, Alain Frisch)
+
+* PR#6438, PR#7059, GPR#315: Pattern guard disables exhaustiveness check
+  (function Some x when x = 0 -> ()) will now raise warning 8 (non-exhaustive)
+  instead of warning 25 (all clauses are guarded). 25 isn't raised anymore.
+  Projects that set warning 8 as an error may fail to compile (presumably
+  this is the semantics they wanted).
+  (Alain Frisch, request by Martin Jambon and John Whitington)
+
+- PR#6920: fix debug informations around uses of %apply or %revapply
+  (Jérémie Dimino, report by Daniel Bünzli)
+
+- PR#6939: Segfault with improper use of let-rec
+  (Alain Frisch)
+
+- PR#6943: native-code generator for POWER/PowerPC 64 bits, both in
+  big-endian (ppc64) and little-endian (ppc64le) configuration.
+  (Xavier Leroy, with inspiration from RedHat's unofficial ppc64 and ppc64le
+  ports)
+
+- PR#6979: better code generation in x86-32 backend for copying floats to
+  the stack
+  (Marc Lasson, review by Xavier Leroy)
+
+- PR#7018: fix missing identifier renaming during inlining
+  (Alain Frisch, review by Xavier Leroy)
+
+- PR#7022, GPR#259: unbox float and boxed ints earlier, avoid second pass
+  (Alain Frisch)
+
+- PR#7026, GPR#288: remove write barrier for polymorphic variants without
+  arguments
+  (Simon Cruanes)
+
+- PR#7031: new warning 57, ambiguous guarded or-patterns
+  (Luc Maranget, Gabriel Scherer, report by Martin Clochard and Claude Marché)
+
+- PR#7064, GPR#316: allowing to mark compilation units and sub-modules as
+  deprecated
+  (Alain Frisch)
+
+- PR#7067: fix performance regression (wrt. 4.01) in the native compiler
+  for long nested structures
+  (Alain Frisch, report by Daniel Bünzli, review by Jacques Garrigue)
+
+- PR#7097: fix strange syntax error message around illegal packaged module
+  signature constraints
+  (Alain Frisch, report by Jun Furuse)
+
+- PR#7118, PR#7120, GPR#408, GPR#476: Bug fixed in stack unwinding
+  metadata generation. Was a cause of crashes in GUI programs on OS X.
+  (Bart Jacobs, review by Mark Shinwell)
+
+- PR#7168: Exceeding stack limit in bytecode can lead to a crash.
+  (Jacques-Henri Jourdan)
+
+- PR#7232: Strange Pprintast output with ppx_deriving
+  (Damien Doligez, report by Anton Bachin)
+
+- GPR#17: some cmm optimizations of integer operations with constants
+  (Stephen Dolan, review by Pierre Chambart)
+
+- GPR#89: improve type-specialization of unapplied primitives:
+  unapplied annotations (compare : int -> _),
+  type propagation (List.sort compare [1;2;3])
+  and propagation from module signatures now lead to specialization
+  (Frédéric Bour, review by Gabriel Scherer)
+
+- GPR#107: Prevent more unnecessary float boxing, especially in `if` and `match`
+  (Vladimir Brankov, review by Alain Frisch)
+
+- GPR#109: new (lazy) unboxing strategy for float and int references
+  (Vladimir Brankov, review by Alain Frisch)
+
+- GPR#115: More precise typing of values at the C-- and Mach level.
+  (Xavier Leroy, review by Pierre Chambart)
+
+- GPR#132: Flambda: new intermediate language and "middle-end" optimizers
+  (Pierre Chambart, Mark Shinwell, Leo White)
+
+- GPR#212, PR#7226, GPR#542: emit column position in gas assembly `.loc`
+  (Frédéric Bour, Anton Bachin)
+
+- GPR#207: Colors in compiler messages (warnings, errors)
+  configure with -color {auto|always|never} or TERM=dumb
+  (Simon Cruanes, review by Gabriel Scherer)
+
+- GPR#258: more precise information on PowerPC instruction sizes
+  (Pierre Chambart, Xavier Leroy)
+
+- GPR#263: improve code generation for if-equivalents of (&&) and (||)
+  (Pierre Chambart)
+
+- GPR#270: Make [transl_exception_constructor] generate [Immutable] blocks
+  (Mark Shinwell)
+
+- GPR#271: Fix incorrect mutability flag when records are built using "with"
+  (Mark Shinwell)
+
+- GPR#275: native-code generator for IBM z System running Linux.
+  In memoriam Gene Amdahl, 1922-2015.
+  (Bill O'Farrell, Tristan Amini, Xavier Leroy)
+
+- GPR#282: relax short-paths safety check in presence of module aliases, take
+  penalty into account while building the printing map.
+  (Thomas Refis, Leo White)
+
+- GPR#306: Instrument the compiler to debug performance regressions
+  (Pierre Chambart)
+
+- GPR#319: add warning 58 for missing cmx files, and
+  extend -opaque option to mli files: a missing .cmx does not warn
+  if the corresponding .cmi is compiled -opaque.
+  (Leo White)
+
+- GPR#388: OCAML_FLEXLINK environment variable allows overriding flexlink
+  command (David Allsopp)
+
+- GPR#392: put all parsetree invariants in a new module Ast_invariants
+  (Jérémie Dimino)
+
+- GPR#407: don't display the name of compiled .c files when calling the
+  Microsoft C Compiler (same as the assembler).
+  (David Allsopp)
+
+- GPR#431: permit constant float arrays to be eligible for pattern match
+  branch merging
+  (Pierre Chambart)
+
+- GPR#455: provide more debugging information to Js_of_ocaml
+  (Jérôme Vouillon)
+
+- GPR#514, GPR#554: Added several command-line flags to explicitly enable
+  settings that are currently the default:
+  `-alias-deps`, `-app-funct`, `-no-keep-docs`, `-no-keep-locs`,
+  `-no-principal`, `-no-rectypes`, `-no-strict-formats`
+  (Demi Obenour)
+
+- GPR#545: use reraise to preserve backtrace on
+  `match .. with exception e -> raise e`
+  (Nicolas Ojeda Bar, review by Gabriel Scherer)
+
+### Runtime system:
+
+* GPR#596: make string/bytes distinguishable in the underlying
+  compiler implementation; caml_fill_string and caml_create_string are
+  deprecated and will be removed in the future, please use
+  caml_fill_bytes and caml_create_bytes for migration
+  (Hongbo Zhang, review by Damien Doligez, Alain Frisch, and Hugo Heuzard)
+
+- PR#3612, PR#92: allow allocating custom block with finalizers
+  in the minor heap.
+  (Pierre Chambart)
+
+* PR#6517: use ISO C99 types {,u}int{32,64}_t in preference to our homegrown
+  types {,u}int{32,64}.
+  C stubs may have to be updated as {,u}int{32,64}_t are not defined anymore.
+  (Xavier Leroy)
+
+- PR#6760: closures evaluated in the toplevel can now be marshalled
+  (whitequark, review by Jacques-Henri Jourdan)
+
+- PR#6902, GPR#210: emit a runtime warning on stderr
+  when finalizing an I/O channel which is still open:
+    "channel opened on file '...' dies without being closed"
+  this is controlled by OCAMLRUNPARAM=W=1 or with Sys.enable_runtime_warnings.
+  The behavior of affected program is not changed,
+  but they should still be fixed.
+  (Alain Frisch, review by Damien Doligez)
+
+- Signal handling: for read-and-clear, use GCC/Clang atomic builtins
+  if available.
+  (Xavier Leroy)
+
+- PR#6910, GPR#224: marshaling (output_value, input_value, et al)
+  now support marshaled data bigger than 4 Gb.
+  (Xavier Leroy)
+
+* GPR#226: select higher levels of optimization for GCC >= 3.4 and Clang
+  when compiling the run-time system and C stub code.
+  "-std=gnu99 -O2 -fno-strict-aliasing -fwrapv" is used by default.
+  This also affects default flags for user stubs compiled with "ocamlc -c foo.c"
+  and may uncover bugs in them.
+  (Xavier Leroy)
+
+- GPR#262: Multiple GC roots per compilation unit
+  (Pierre Chambart, Mark Shinwell, review by Damien Doligez)
+
+* GPR#297: Several changes to improve the worst-case GC pause time.
+  Changes Gc.control and Gc.major_slice and adds functions to the Gc module.
+  (Damien Doligez, with help from François Bobot, Thomas Braibant, Leo White)
+
+- GPR#325: Add v=0x400 flag to OCAMLRUNPARAM to display GC stats on exit
+  (Louis Gesbert, review by Alain Frisch)
+
+### Standard library:
+
+- PR#1460, GPR#230: Array.map2, Array.iter2
+  (John Christopher McAlpine)
+
+- PR#5197, GPR#63: Arg: allow flags such as --flag=arg as well as --flag arg
+  (Richard Jones)
+
+- PR#6017, PR#7034, GPR#267: More efficient ifprintf implementation
+  (Jeremy Yallop, review by Gabriel Scherer)
+
+- PR#6296: Some documentation on the floating-point representations
+    recognized by Pervasives.float_of_string
+  (Xavier Leroy)
+
+- PR#6316: Scanf.scanf failure on %u formats when reading big integers
+  (Xavier Leroy, Benoît Vaugon)
+
+- PR#6321: guarantee that "hypot infinity nan = infinity"
+  (for conformance with ISO C99)
+  (Xavier Leroy)
+
+- PR#6390, GPR#36: expose Sys.{int_size,max_wosize} for js_of_ocaml portability
+  (Hugo Heuzard)
+
+- PR#6449: Add Map.union
+  (Alain Frisch)
+
+* PR#6494: Add 'equal' functions in modules
+  Bytes, Char, Digest, Int32, Int64, Nativeint, and String
+  Users defining their own modules with signature 'module type of Int32'
+  have to extend their implementation.
+  (Romain Calascibetta)
+
+* PR#6524, GPR#79: Filename: Optional ?perms argument to open_temp_file
+  May break partial applications of the function (fix by passing ?perms:None)
+  (Daniel Bünzli, review by Jacques-Pascal Deplaix)
+
+* PR#6525, GPR#80: Add Uchar module to the standard library
+  May introduce module name conflicts with existing projects.
+  (Daniel Bünzli, review by Yoriyuki Yamagata and Damien Doligez)
+
+- PR#6577: improve performance of %L, %l, %n, %S, %C format specifiers
+  (Alain Frisch)
+
+- PR#6585: fix memory leak in win32unix/createprocess.c
+  (Alain Frisch, report by user 'aha')
+
+- PR#6645, GPR#174: Guarantee that Set.add, Set.remove, Set.filter
+  return the original set if no change is required
+  (Alain Frisch, Mohamed Iguernlala)
+
+- PR#6649, GPR#222: accept (int_of_string "+3")
+  (John Christopher McAlpine)
+
+- PR#6694, PR#6695, GPR#124: deprecate functions using ISO-8859-1 character set
+  in Char, Bytes, String and provide alternatives *_acii using US-ASCII.
+  Affected functions:
+    {Char,String,Bytes}.{uppercase,lowercase},
+    {String,Bytes}.{capitalize,uncaptialize}
+  (whitequark, review by Damien Doligez)
+
+- GPR#22: Add the Ephemeron module that implements ephemerons and weak
+  hash table
+  (François Bobot, review by Damien Doligez, Daniel Bünzli,
+  Alain Frisch, Pierre Chambart)
+
+- GPR#164: more efficient (branchless) implementation of Pervasives.compare
+  specialized at type 'float'.
+  (Vladimir Brankov)
+
+- GPR#175: Guarantee that Map.add, Map.remove, Map.filter
+  return the original map if no change is required.
+  (Mohamed Iguernlala)
+
+- GPR#201: generalize types of Printf.{ifprintf,ikfprintf}
+  (Maxence Guesdon)
+
+- GPR#216: add the missing POSIX.1-2001 signals in Sys
+  (Guillaume Bury)
+
+- GPR#239: remove type-unsafe code from Stream
+  (Pierre Chambart, review by Gabriel Scherer and Jeremy Yallop)
+
+- GPR#250: Check for negative start element in Array.sub
+  (Jeremy Yallop)
+
+- GPR#265: new implementation of Queue avoiding Obj.magic
+  (Jérémie Dimino)
+
+- GPR#268, GPR#303: '%h' and '%H' modifiers for printf and scanf to
+  support floating-point numbers in hexadecimal notation
+  (Xavier Leroy, Benoît Vaugon)
+
+- GPR#272: Switch classify_float to [@@unboxed]
+  (Alain Frisch)
+
+- Improve speed of classify_float by not going through fpclassify()
+  (Alain Frisch, Xavier Leroy)
+
+- GPR#277: Switch the following externals to [@@unboxed]:
+  * {Nativeint,Int32,Int64}.{of,to}_float
+  * Int{32,64}.float_of_bits
+  * Int{32,64}.bits_of_float
+  (Jérémie Dimino)
+
+- GPR#281: Switch the following externals to [@@unboxed]:
+  * Sys.time (and [@@noalloc])
+  * Pervasives.ldexp (and [@@noalloc])
+  * Pervasives.compare for float, nativeint, int32, int64.
+  (François Bobot)
+
+- PR#3622, GPR#195: add function Stack.fold
+  (Simon Cruanes)
+
+- GPR#329: Add exists, for_all,  mem and memq functions in Array
+  (Bernhard Schommer)
+
+- GPR#337: Add [Hashtbl.filter_map_inplace]
+  (Alain Frisch)
+
+- GPR#356: Add [Format.kasprintf]
+  (Jérémie Dimino, Mark Shinwell)
+
+### Type system:
+
+- PR#5545: Type annotations on methods cannot control the choice of abbreviation
+  (Jacques Garrigue)
+
+* PR#6465: allow incremental weakening of module aliases.
+  This is done by adding equations to submodules when expanding aliases.
+  In theory this may be incompatible is some corner cases defining a module
+  type through inference, but no breakage known on published code.
+  (Jacques Garrigue)
+
+- PR#6593: Functor application in tests/basic-modules fails after commit 15405
+  (Jacques Garrigue)
+
+### Toplevel and debugger:
+
+- PR#6113: Add descriptions to directives, and display them via #help
+  (Nick Giannarakis, Berke Durak, Francis Southern and Gabriel Scherer)
+
+- PR#6396: Warnings-as-errors not properly flushed in the toplevel
+  (Alain Frisch)
+
+- PR#6401: use proper error reporting for toplevel environment initialization:
+  no more Env.Error(_) at start time
+  (Gabriel Scherer, Alain Frisch)
+
+- PR#6468: toplevel now supports backtraces if invoked with OCAMLRUNPARAM=b
+  (whitequark and Jake Donham,
+   review by Gabriel Scherer and Jacques-Henri Jourdan)
+
+- PR#6906: wrong error location for unmatched paren with #use in toplevel
+  (Damien Doligez, report by Kenichi Asai)
+
+- PR#6935, GPR#298: crash in debugger when load_printer is given a directory
+  (Junsong Li, review by Gabriel Scherer)
+
+- PR#7081: report preprocessor warnings in the toplevel
+  (Valentin Gatien-Baron, review by Jérémie Dimino)
+
+- PR#7098: Loss of ppx context in toplevel after an exception
+  (Alain Frisch, report by whitequark)
+
+- PR#7101: The toplevel does not close in_channel for libraries specified on
+  its command line
+  (Alain Frisch)
+
+- PR#7119: the toplevel does not respect [@@@warning]
+  (Alain Frisch, report by Gabriel Radanne)
+
+### Other libraries:
+
+* Unix library: channels created by Unix.in_channel_of_descr or
+  Unix.out_channel_of_descr no longer support text mode under Windows.
+  Calling [set_binary_mode_{in,out} chan false] on these channels
+  now causes an error.
+  (Xavier Leroy)
+
+- PR#4023 and GPR#68: add Unix.sleepf (sleep with sub-second resolution)
+  (Evgenii Lepikhin and Xavier Leroy)
+
+* Protect Unix.sleep against interruptions by handled signals.
+  Before, a handled signal could cause Unix.sleep to return early.
+  Now, the sleep is restarted until the given time is elapsed.
+  (Xavier Leroy)
+
+* PR#6120, GPR#462: implement Unix.symlink and Unix.readlink on
+  Windows. Unix.symlink has a new optional argument to_dir (ignored on
+  non-native Windows platforms). stat functions reimplemented to avoid
+  buggy Microsoft CRT implementations (native Windows only)
+  (David Allsopp, review by Daniel Bünzli)
+
+- PR#6263: add kind_size_in_bytes and size_in_bytes functions
+  to Bigarray module.
+  (Runhang Li, review by Mark Shinwell)
+
+- PR#6289: Unix.utimes uses the current time only if both arguments
+    are exactly 0.0.  Also, use sub-second resolution if available.
+  (Xavier Leroy, report by Christophe Troestler)
+
+- PR#6896: serious reimplementation of Big_int.float_of_big_int and
+  Ratio.float_of_ratio, ensuring that the result is correctly rounded.
+  (Xavier Leroy)
+
+- PR#6989: in Str library, make sure that all $...$ groups are binding
+    and can be consulted with Str.matched_group.  There used to be
+    a limitation to 32 binding groups.
+  (Xavier Leroy)
+
+- PR#7013: spurious wake-up in the Event module
+  (Xavier Leroy)
+
+- PR#7024: in documentation of Str regular expressions, clarify what
+    "end of line" means for "^" and "$" regexps.
+  (Xavier Leroy, question by Fredrik Lindgren)
+
+- PR#7209: do not run at_exit handlers in [Unix.create_process] and
+  similar functions when the [exec] call fails in the child process
+  (Jérémie Dimino)
+
+### OCamldep:
+
+- GPR#286: add support for module aliases
+  (Jacques Garrigue)
+
+### Manual:
+
+- GPR#302: The OCaml reference manual is now included in the manual/
+  subdirectory of the main OCaml source repository. Contributions to
+  the manual are warmly welcome.
+  (François Bobot, review by Florian Angeletti)
+
+- PR#6601: replace strcpy with caml_strdup in sample code
+  (Christopher Zimmermann)
+
+- PR#6676: ongoing simplification of the "Language Extensions" section
+  (Alain Frisch, John Whitington)
+
+- PR#6898: Update win32 support documentation of the Unix library
+  (Damien Doligez, report by Daniel Bünzli)
+
+- PR#7092, GPR#379: Add missing documentation for new 4.03 features
+  (Florian Angeletti)
+
+- PR#7094, GPR#468, GPR#551: add new section 8.5 to document warnings
+  The general idea is to document warnings that may require explanations.
+  Currently documented warnings are:
+  - 52: Fragile constant pattern.
+  - 57: Ambiguous or-pattern variables under guard
+  (Florian Angeletti and Gabriel Scherer)
+
+- PR#7109, GPR#380: Fix bigarray documentation layout
+  (Florian Angeletti, Leo White)
+
+### Bug fixes:
+
+- PR#3612: memory leak in bigarray read from file
+  (Pierre Chambart, report by Gary Huber)
+
+* PR#4166, PR#6956: force linking when calling external C primitives
+  (Jacques Garrigue, reports by Markus Mottl and Christophe Troestler)
+
+* PR#4466, PR#5325: under Windows, concurrent read and write operations
+    on the same socket could block unexpectedly.  Fixed by keeping sockets
+    in asynchronous mode rather than creating them in synchronous mode.
+  (Xavier Leroy)
+
+* PR#4539: change exception string raised when comparing functional values
+  May break programs matching on the string argument of Invalid_argument.
+  Matching on the string argument of Invalid_argument or Failure is a
+  programming mistake: these strings may change in future versions.
+  (Nicolas Braud-Santoni, report by Eric Cooper)
+
+- PR#4832: Filling bigarrays may block out runtime
+  (Markus Mottl)
+
+- PR#5663: program rejected due to nongeneralizable type variable that
+    appears nowhere
+  (Jacques Garrigue, report by Stephen Weeks)
+
+- PR#5780: report more informative type names in GADTs error messages
+  (Jacques Garrigue, report by Sebastien Furic)
+
+- PR#5887: move the byterun/*.h headers to byterun/caml/*.h to avoid header
+    name clashes
+  (Jérôme Vouillon and Adrien Nader and whitequark)
+
+* PR#6081: ocaml now adds script's directory to search path, not current
+    directory
+  (Thomas Leonard and Damien Doligez)
+
+- PR#6108, PR#6802: fail cleanly if dynlink.cma or ocamltoplevel.cma
+    are loaded inside the toplevel loop.
+  (Xavier Leroy)
+
+- PR#6171: Confusing error message when a type escapes its scope.
+  (Jacques Garrigue and Leo White, report by John Whitington)
+
+- PR#6340: Incorrect handling of \r when processing "Windows" source files
+  (Damien Doligez, report by David Allsopp)
+
+- PR#6342: Incorrect error message when type constraints differ
+  (Alain Frisch, report by Philippe Wang)
+
+* PR#6521: {Bytes,Char,String}.escaped were locale-dependent
+  we now escape all non-ASCII-printable instead of a locale-dependent subset.
+  (Damien Doligez, report by Jun Furuse)
+
+- PR#6526: ocamllex should not warn on unescaped newline inside comments
+  (Damien Doligez, report by user 'dhekir')
+
+- PR#6341: ocamldoc -colorize-code adds spurious <br> tags to <pre> blocks
+  (Maxence Guesdon, report by Damien Doligez)
+
+- PR#6560: Wrong failure message for {Int32,Int64,NativeInt}.of_string
+  It reported (Failure "int_of_string"), now "Int32.of_string" etc.
+  (Maxime Dénès and Gabriel Scherer)
+
+- PR#6648: show_module should indicate its elision
+  (Jacques Garrigue, report by Leo White)
+
+- PR#6650: Cty_constr not handled correctly by Subst
+  (Jacques Garrigue, report by Leo White)
+
+- PR#6651: Failing component lookup
+  (Jacques Garrigue, report by Leo White)
+
+* PR#6664: Crash when finalising lazy values of the wrong type.
+  (Damien Doligez)
+
+- PR#6672: Unused variance specification allowed in with constraint
+  (Jacques Garrigue, report by Leo White)
+
+- PR#6677: Allow to disable warning 39 (useless "rec") with [@ocaml.warning]
+  applied to the first value binding of the would-be "rec" declaration
+  (Alain Frisch, report by Jun Furuse)
+
+- PR#6744: Univars can escape through polymorphic variants (partial fix)
+  (Jacques Garrigue, report by Leo White)
+
+- PR#6752: Extensible variant types and scope escaping
+  A side-effect of the fix is that (ocamlc -i) sometimes reports
+  (type-sound) invalid signature, with a type used before its declaration.
+  (Jacques Garrigue, report by Maxence Guesdon)
+
+- PR#6762: improve warning 45 in presence of re-exported type definitions
+  (Warning 45: open statement shadows the constructor)
+  (Alain Frisch, report by Olivier Andrieu)
+
+- PR#6776: Failure to kill the "tick" thread, segfault when exiting the runtime
+  (Damien Doligez, report by Thomas Braibant)
+
+- PR#6780: Poor error message for wrong -farch and -ffpu options (ocamlopt, ARM)
+  (Xavier Leroy, report by whitequark)
+
+- PR#6805: Duplicated expression in case of hole in a non-failing switch.
+  (Luc Maranget)
+
+* PR#6808: the parsing of OCAMLRUNPARAM is too lax
+  (Damien Doligez)
+
+- PR#6874: Inefficient code generated for module function arguments
+  (Jacques Garrigue, report by Markus Mottl)
+
+- PR#6888: The list command of ocamldebug uses the wrong file
+  (Damien Doligez, report by Pierre-Marie Pédrot)
+
+- PR#6897: Bad error message for some pattern matching on extensible variants
+  (Alain Frisch, report by Gabriel Radanne)
+
+- PR#6899: Optional parameters and non generalizable type variables
+  (Thomas Refis and Leo White)
+
+- PR#6907: Stack overflow printing error in class declaration
+  (Jacques Garrigue, report by Ivan Gotovchits)
+
+- PR#6931: Incorrect error message on type error inside record construction
+  (Damien Doligez, report by Leo White)
+
+- PR#6938: fix regression on "%047.27{l,L,n}{d,i,x,X,o,u}"
+  (Benoît Vaugon, report by Arduino Cascella)
+
+- PR#6944: let module X = Path in … is not typed as a module alias
+  (Jacques Garrigue, report by Frédéric Bour)
+
+- PR#6945 and GPR#227: protect Sys and Unix functions against string
+    arguments containing the null character '\000'
+  (Simon Cruanes and Xavier Leroy, report by Daniel Bünzli)
+
+- PR#6946: Uncaught exception with wrong type for "%ignore"
+  (Jacques Garrigue, report by Leo White)
+
+- PR#6954: Infinite loop in type checker with module aliases
+  (Jacques Garrigue, report by Markus Mottl)
+
+- PR#6972, GPR#276: 4.02.3 regression on documentation comments in .cmt files
+  (Leo White, report by Olivier Andrieu)
+
+- PR#6977: String literals in comments interpret escape sequences
+  (Damien Doligez, report by Daniel Bünzli and David Sheets)
+
+- PR#6980: Assert failure from polymorphic variants and existentials
+  (Jacques Garrigue, report by Leo White)
+
+- PR#6981: Ctype.Unify(_) with associated functor arg refering to previous one
+  (Jacques Garrigue, report by Nicholas Labich)
+
+- PR#6982: unexpected type error when packing a module alias
+  (Jacques Garrigue, report by Valentin Gatien-Baron)
+
+- PR#6985: `module type of struct include Bar end exposes
+           %s#row when Bar contains private row types
+  (Jacques Garrigue, report by Nicholas Labich)
+
+- PR#6992: Segfault from bug in GADT/module typing
+  (Jacques Garrigue, report by Stephen Dolan)
+
+- PR#6993: Segfault from recursive modules violating exhaustiveness assumptions
+  (Jacques Garrigue, report by Stephen Dolan)
+
+- PR#6998: Typer fails reading unnecessary cmis with -no-alias-deps and -w -49
+  (Leo White, report by Valentin Gatien-Baron)
+
+- PR#7003: String.sub may cause segmentation fault on sizes above 2^31
+  (Damien Doligez, report by Radek Micek)
+
+- PR#7008: Fatal error in ocamlc with empty compilation unit name
+  (Damien Doligez, report by Cesar Kunz)
+
+- PR#7012: Variable name forgotten when it starts with a capital letter
+  (Jacques Garrigue, Gabriel Scherer,
+   report by Thomas Leonard and Florian Angeletti)
+
+- PR#7016: fix Stack overflow in GADT typing
+  Note: Equi-recursive types are considered when checking GADT pattern
+  exhaustiveness, even when -rectypes is not used.
+  (Jacques Garrigue, report by Mikhail Mandrykin)
+
+- PR#7030: libasmrun_shared.so fails to build on SPARC Solaris
+  (report and fix by Patrick Star)
+
+- PR#7036: Module alias is not taken into account when checking module
+  type compatibility (in a class type)
+  (Jacques Garrigue)
+
+- PR#7037: more reproducible builds, don't put temp file names into objects
+  (Xavier Leroy)
+
+- PR#7038: out of memory condition in caml_io_mutex_lock
+  (Xavier Leroy, report by Marc Lasson)
+
+- PR#7039: Unix.getsockname returns garbage for unnamed PF_UNIX sockets
+  (Xavier Leroy)
+
+- PR#7042 and GPR#295: CSE optimization confuses the FP literals +0.0 and -0.0
+  (Xavier Leroy)
+
+- PR#7075: Fix repetitions in ocamldoc generated documentation
+  (Florian Angeletti)
+
+- PR#7082: Object type in recursive module's `with` annotation
+  (Jacques Garrigue and Alain Frisch, report by Nicholas Labich)
+
+- PR#7096: ocamldoc uses an incorrect subscript/superscript style
+  (Gabriel Scherer, report by user 'pierpa')
+
+- PR#7108: ocamldoc, have -html preserve custom/extended html generators
+  (Armaël Guéneau)
+
+- PR#7111: reject empty let bindings instead of printing incorrect syntax
+  (Jérémie Dimino)
+
+* PR#7113: -safe-string can break GADT compatibility check
+  bytes and string are now considered compatible even with -safe-string,
+  which may break exhaustivity for code assuming they were disjoint
+  (Jacques Garrigue, report by Jeremy Yallop)
+
+- PR#7115: shadowing in a branch of a GADT match breaks unused variable warning
+  (Alain Frisch, report by Valentin Gatien-Baron)
+
+- PR#7133, GPR#450: generate local jump labels on OS X
+  (Bart Jacobs)
+
+- PR#7135: only warn about ground coercions in -principal mode
+  (Jacques Garrigue, report by Jeremy Yallop)
+
+* PR#7152: Typing equality involving non-generalizable type variable
+  A side-effect of the fix is that, for deeply nested non generalizable
+  type variables, having an interface file may no longer be sufficient,
+  and you may have to add a local type annotation (cf PR#7313)
+  (Jacques Garrigue, report by François Bobot)
+
+- PR#7160: Type synonym definitions can weaken gadt constructor types
+  (Jacques Garrigue, report by Mikhail Mandrykin)
+
+- PR#7181: Misleading error message with GADTs and polymorphic variants
+  (Jacques Garrigue, report by Pierre Chambart)
+
+- PR#7182: Assertion failure with recursive modules and externals
+  (Jacques Garrigue, report by Jeremy Yallop)
+
+- PR#7196: "let open" is not correctly pretty-printed to the left of a ';'
+  (Gabriel Scherer, report by Christophe Raffalli)
+
+- PR#7214: Assertion failure in Env.add_gadt_instances
+  (Jacques Garrigue, report by Stephen Dolan)
+
+- PR#7220: fix a memory leak when using both threads and exception backtraces
+  (Gabriel Scherer, review by François Bobot, report by Rob Hoes)
+
+- PR#7222: Escaped existential type
+  (Jacques Garrigue, report by Florian Angeletti)
+
+- PR#7230: Scrutinee discarded in match with only refutation cases
+  (Jacques Garrigue, report by Jeremy Yallop)
+
+- PR#7234: Compatibility check wrong for abstract type constructors
+  (Jacques Garrigue, report by Stephen Dolan)
+
+- PR#7324: OCaml 4.03.0 type checker dies with an assert failure when
+  given some cyclic recusive module expression
+  (Jacques Garrigue, report by jmcarthur)
+
+- PR#7368: Manual major GC fails to compact the heap
+  (Krzysztof Pszeniczny)
+
+- GPR#205: Clear caml_backtrace_last_exn before registering as root
+  (report and fix by Frédéric Bour)
+
+- GPR#220: minor -dsource error on recursive modules
+  (Hongbo Zhang)
+
+- GPR#228: fix a dangling internal pointer in (bytecode )debug_info
+  (Gabriel Scherer and Mark Shinwell and Xavier Leroy)
+
+- GPR#233: Make CamlinternalMod.init_mod robust to optimization
+  (Pierre Chambart, Mark Shinwell)
+
+- GPR#249: fix a few hardcoded ar commands
+  (Daniel Bünzli)
+
+- GPR#251: fix cross-compilation with ocamldoc enabled
+  (whitequark)
+
+- GPR#280: Fix stdlib dependencies for .p.cmx
+  (Pierre Chambart, Mark Shinwell)
+
+- GPR#283: Fix memory leaks in intern.c when OOM is raised
+  (Marc Lasson, review by Alain Frisch)
+
+- GPR#22: Fix the cleaning of weak pointers. In very rare cases
+  accessing a value during the cleaning of the weak pointers could
+  result in the value being removed from one weak arrays and kept in
+  another one. That breaks the property that a value is removed from a
+  weak pointer only when it is dead and garbage collected.
+  (François Bobot, review by Damien Doligez)
+
+- GPR#313: Prevent quadratic cases in CSE
+  (Pierre Chambart, review by Xavier Leroy)
+
+- PR#6795, PR#6996: Make ocamldep report errors passed in
+  [%ocaml.error] extension points
+  (Jérémie Dimino)
+
+- GPR#355: make ocamlnat build again
+  (Jérémie Dimino, Thomas Refis)
+
+- GPR#405: fix compilation under Visual Studio 2015
+  (David Allsopp)
+
+- GPR#441: better type error location in presence of type constraints
+  (Thomas Refis, report by Arseniy Alekseyev)
+
+- GPR#477: reallow docstrings inside object types, and inside polymorphic
+  variant and arrow types
+  (Thomas Refis)
+
+### Features wishes:
+
+- PR#4518, GPR#29: change location format for reporting errors in ocamldoc
+  (Sergei Lebedev)
+
+- PR#4714: List.cons
+
+- PR#5418 (comments) : generate dependencies with $(CC) instead of gcc
+  (Damien Doligez, report by Michael Grünewald)
+
+- PR#6167: OCAMLPARAM support for disabling PIC generation ("pic=0")
+  (Gabor Pali)
+
+- PR#6367, GPR#25: introduce Asttypes.arg_label to encode labelled arguments
+  (Frédéric Bour and Jacques Garrigue)
+
+- PR#6452, GPR#140: add internal suport for custom printing formats
+  (Jérémie Dimino)
+
+- PR#6611: remove the option wrapper on optional arguments in the syntax tree
+  (Alain Frisch, review by Damien Doligez, request by whitequark)
+
+- PR#6635: support M.[], M.(), M.{< >} and M.[| |]
+  (Jeremy Yallop, review by Gabriel Radanne)
+
+- PR#6691: install .cmt[i] files for stdlib and compiler-libs
+  (David Sheets, request by Gabriel Radanne)
+
+- PR#6722: compatibility with x32 architecture (x86-64 in ILP32 mode).
+  ocamlopt is not supported, but bytecode compiles cleanly.
+  (Adam Borowski and Xavier Leroy)
+
+- PR#6742: remove duplicate virtual_flag information from Tstr_class
+  (Gabriel Radanne and Jacques Garrigue)
+
+- PR#6719: improve Buffer.add_channel when not enough input is available
+  (Simon Cruanes)
+
+* PR#6816: reject integer and float literals directly followed by an identifier.
+  This was prevously read as two separate tokens.
+  [let abc = 1 in (+) 123abc] was accepted and is now rejected.
+  (Hugo Heuzard)
+
+- PR#6876: improve warning 6 by listing the omitted labels.
+  (Warning 6: Label omitted in function application)
+  (Eyyüb Sari)
+
+- PR#6924: tiny optim to avoid some spilling of floats in x87
+  (Alain Frisch)
+
+- GPR#111: `(f [@taillcall]) x y` warns if `f x y` is not a tail-call
+  (Simon Cruanes)
+
+- GPR#118: ocamldep -allow-approx: fallback to a lexer-based approximation
+  (Frédéric Bour)
+
+- GPR#137: add untypeast.ml (in open recursion style) to compiler-libs
+  (Gabriel Radanne)
+
+- GPR#142: add a CAMLdrop macro for undoing CAMLparam*/CAMLlocal*
+  (Thomas Braibant and Damien Doligez)
+
+- GPR#145: speeedup bigarray access by optimizing Cmmgen.bigarray_indexing
+  (Vladimir Brankov, review by Gabriel Scherer)
+
+- GPR#147: [type 'a result = Ok of 'a | Error of 'b] in Pervasives
+  (Yaron Minsky)
+
+- GPR#156, GPR#279: optimize caml_frame_descriptors realloc (dynlink speedup)
+  (Pierre Chambart, Alain Frisch,
+   review by François Bobot, Xavier Leroy and Damien Doligez)
+
+- GPR#165, GPR#221: fix windows compilation warnings
+  (Bernhard Schommer, Gabriel Scherer, report by Alain Frisch)
+
+* GPR#170: Parse arbitrary precision integers.
+  Accept a single [A-Za-z] as modifier for integers (generalizing 'l','L','n')
+  and floats.
+  May cause breakage (ie. ppx preprocessor) because of changes in the parsetree.
+  This changes PR#6816 a little bit by reading the literal [123a] as a single
+  token that can later be rewritten by a ppx preprocessor.
+  (Hugo Heuzard)
+
+- GPR#189: Added .dylib and .so as extensions for ocamlmklib
+  (Edgar Aroutiounian, whitequark)
+
+- GPR#191: Making gc.h and some part of memory.h public
+  (Thomas Refis)
+
+- GPR#196: Make [Thread.id] and [Thread.self] [noalloc]
+  (Clark Gaebel)
+
+- GPR#237: a CONTRIBUTING document
+  (François Bobot, Gabriel Scherer, review by Xavier Leroy)
+
+- GPR#245: remove a few remaining French comments
+  (Florian Angeletti)
+
+- GPR#252: improve build instructions in MSVC Windows README
+  (Philip Daian)
+
+- GPR#308: add experimental support for NetBSD/arm (verified on RaspberryPi)
+  (Rich Neswold)
+
+- GPR#335: Type error messages specifies if a type is abstract
+  because no corresponding cmi could be found.
+  (Hugo Heuzard)
+
+- GPR#365: prevent printing just a single type variable on one side
+  of a type error clash.
+  (Hugo Heuzard)
+
+- GPR#383: configure: define _ALL_SOURCE for build on AIX7.1
+  (tkob)
+
+- GPR#401: automatically retry failed test directories in the testsuite
+  (David Allsopp)
+
+- GPR#451: an optional 'parallel' target in testsuite/Makefile using the
+  GNU parallel tool to run tests in parallel.
+  (Gabriel Scherer)
+
+- GPR#555: ensure that register typing constraints are respected at
+  join points in the control flow graph
+  (Mark Shinwell, debugging & test case by Arseniy Alekseyev and Leo White,
+    code review by Xavier Leroy)
+
+### Build system:
+
+- GPR#388: FlexDLL added as a Git submodule and bootstrappable with the compiler
+  (David Allsopp)
+
+OCaml 4.02.3 (27 Jul 2015):
+---------------------------
+
+Bug fixes:
+- PR#6908: Top-level custom printing for GADTs: interface change in 4.02.2
+  (Grégoire Henry, report by Jeremy Yallop)
+- PR#6919: corrupted final_table
+  (ygrek)
+- PR#6926: Regression: ocamldoc lost unattached comment
+  (Damien Doligez, report by François Bobot)
+- PR#6930: Aliased result type of GADT constructor results in assertion failure
+  (Jacques Garrigue)
+
+Feature wishes:
+- PR#6691: install .cmt[i] files for stdlib and compiler-libs
+  (David Sheets, request by Gabriel Radanne)
+- GPR#37: New primitive: caml_alloc_dummy_function
+  (Hugo Heuzard)
+
+OCaml 4.02.2 (17 Jun 2015):
+---------------------------
+
+(Changes that can break existing programs are marked with a "*")
+
+Language features:
+- PR#6583: add a new class of binary operators with the same syntactic
+  precedence as method calls; these operators start with # followed
+  by a non-empty sequence of operator symbols (for instance #+, #!?).
+  It is also possible to use '#' as part of these extra symbols
+  (for instance ##, or #+#); this is rejected by the type-checker,
+  but can be used e.g. by ppx rewriters.
+  (Alain Frisch, request by Gabriel Radanne)
+* PR#6016: add a "nonrec" keyword for type declarations
+  (Jérémie Dimino)
+* PR#6612, GPR#152: change the precedence of attributes in type declarations
+  (Jérémie Dimino)
+
+Compilers:
+- PR#6600: make -short-paths faster by building the printing map
+  incrementally
+  (Jacques Garrigue)
+- PR#6642: replace $CAMLORIGIN in -ccopt with the path to cma or cmxa
+  (whitequark, Gabriel Scherer, review by Damien Doligez)
+- PR#6797: new option -output-complete-obj
+  to output an object file with included runtime and autolink libraries
+  (whitequark)
+- PR#6845: -no-check-prims to tell ocamlc not to check primitives in runtime
+  (Alain Frisch)
+- GPR#149: Attach documentation comments to parse tree
+  (Leo White)
+- GPR#159: Better locations for structure/signature items
+  (Leo White)
+
+Toplevel and debugger:
+- PR#5958: generalized polymorphic #install_printer
+  (Pierre Chambart and Grégoire Henry)
+
+OCamlbuild:
+- PR#6237: explicit "infer" tag to control or disable menhir --infer
+  (Hugo Heuzard)
+- PR#6625: pass -linkpkg to files built with -output-obj.
+  (whitequark)
+- PR#6702: explicit "linkpkg" and "dontlink(foo)" flags
+  (whitequark, Gabriel Scherer)
+- PR#6712: Ignore common VCS directories
+  (whitequark)
+- PR#6720: pass -g to C compilers when tag 'debug' is set
+  (whitequark, Gabriel Scherer)
+- PR#6733: add .byte.so and .native.so targets to pass
+  -output-obj -cclib -shared.
+  (whitequark)
+- PR#6733: "runtime_variant(X)" to pass -runtime-variant X option.
+  (whitequark)
+- PR#6774: new menhir-specific flags "only_tokens" and "external_tokens(Foo)"
+  (François Pottier)
+
+Libraries:
+- PR#6285: Add support for nanosecond precision in Unix.stat()
+  (Jérémie Dimino, report by user 'gfxmonk')
+- PR#6781: Add higher baud rates to Unix termios
+  (Damien Doligez, report by Berke Durak)
+- PR#6834: Add Obj.{first,last}_non_constant_constructor_tag
+  (Mark Shinwell, request by Gabriel Scherer)
+
+Runtime:
+- PR#6078: Release the runtime system when calling caml_dlopen
+  (Jérémie Dimino)
+- PR#6675: GC hooks
+  (Damien Doligez and Roshan James)
+
+Build system:
+- PR#5418 (comments) : generate dependencies with $(CC) instead of gcc
+  (Damien Doligez and Michael Grünewald)
+- PR#6266: Cross compilation for iOs, Android etc
+  (whitequark, review by Damien Doligez and Mark Shinwell)
+
+Installation procedure:
+- Update instructions for x86-64 PIC mode and POWER architecture builds
+  (Mark Shinwell)
+
+Bug fixes:
+- PR#5271: Location.prerr_warning is hard-coded to use Format.err_formatter
+  (Damien Doligez, report by Rolf Rolles)
+- PR#5395: OCamlbuild mishandles relative symlinks and include paths
+  (Damien Doligez, report by Didier Le Botlan)
+- PR#5822: wrong value of Options.ext_dll on windows
+  (Damien Doligez and Daniel Weil)
+- PR#5836, PR#6684: printing lazy values in ocamldebug may segfault
+  (Gabriel Scherer, request by the Coq team)
+- PR#5887: move the byterun/*.h headers to byterun/caml/*.h to avoid
+  header name clashes
+  (Jérôme Vouillon and Adrien Nader and whitequark)
+- PR#6281: Graphics window does not acknowledge second click (double click)
+  (Kyle Headley)
+- PR#6490: incorrect backtraces in gdb on AArch64.  Also fixes incorrect
+  backtraces on 32-bit ARM.
+  (Mark Shinwell)
+- PR#6573: extern "C" for systhreads/threads.h
+  (Mickaël Delahaye)
+- PR#6575: Array.init evaluates callback although it should not do so
+  (Alain Frisch, report by Gerd Stolpmann)
+- PR#6607: The manual doesn't mention 0x200 flag for OCAMLRUNPARAM=v
+  (Alain Frisch)
+- PR#6616: allow meaningful use of -use-runtime without -custom.
+  (whitequark)
+- PR#6617: allow android build with pthreads support (since SDK r10c)
+  (whitequark)
+- PR#6626: ocamlbuild on cygwin cannot find ocamlfind
+  (Gergely Szilvasy)
+- PR#6628: Configure script rejects legitimate arguments
+  (Michael Grünewald, Damien Doligez)
+- PR#6630: Failure of tests/prim-bigstring/{big,}string.ml on big-endian
+  architectures
+  (Pierre Chambart, testing by Mark Shinwell)
+- PR#6640: ocamlbuild: wrong "unused tag" warning on "precious"
+  (report by user 'william')
+- PR#6652: ocamlbuild -clean does not print a newline after output
+  (Damien Doligez, report by Andi McClure)
+- PR#6658: cross-compiler: version check not working on OS X
+  (Gerd Stolpmann)
+- PR#6665: Failure of tests/asmcomp on sparc
+  (Stéphane Glondu)
+- PR#6667: wrong implementation of %bswap16 on ARM64
+  (Xavier Leroy)
+- PR#6669: fix 4.02 regression in toplevel printing of lazy values
+  (Leo White, review by Gabriel Scherer)
+- PR#6671: Windows: environment variable 'TZ' affects Unix.gettimeofday
+  (Mickaël Delahaye and Damien Doligez)
+- PR#6680: Missing parentheses in warning about polymorphic variant value
+  (Jacques Garrigue and Gabriel Scherer, report by Philippe Veber)
+- PR#6686: Bug in [subst_boxed_number]
+  (Jérémie Dimino, Mark Shinwell)
+- PR#6690: Uncaught exception (Not_found) with (wrong) wildcard or unification
+  type variable in place of a local abstract type
+  (Jacques Garrigue, report by Mikhail Mandrykin)
+- PR#6693 (part two): Incorrect relocation types in x86-64 runtime system
+  (whitequark, review by Jacques-Henri Jourdan, Xavier Leroy and Mark Shinwell)
+- PR#6717: Pprintast does not print let-pattern attributes
+  (Gabriel Scherer, report by whitequark)
+- PR#6727: Printf.sprintf "%F" misbehavior
+  (Benoît Vaugon, report by Vassili Karpov)
+- PR#6747: ocamlobjinfo: missing symbol caml_plugin_header due to underscore
+  (Damien Doligez, Maverick Woo)
+- PR#6749: ocamlopt returns n for (n mod 1) instead of 0
+  (Mark Shinwell and Jérémie Dimino)
+- PR#6753: Num.quo_num and Num.mod_num incorrect for some negative arguments
+  (Xavier Leroy)
+- PR#6758: Ocamldoc "analyse_module: parsetree and typedtree don't match"
+  (Damien Doligez, report by user 'maro')
+- PR#6759: big_int_of_string incorrectly parses some hexa literals
+  (Damien Doligez, report by Pierre-yves Strub)
+- PR#6763: #show with -short-paths doesn't select shortest type paths
+  (Jacques Garrigue, report by David Sheets)
+- PR#6768: Typechecker overflow the stack on cyclic type
+  (Jacques Garrigue, report by user 'darktenaibre')
+- PR#6770: (duplicate of PR#6686)
+- PR#6772: asmrun/signals_asm.c doesn't compile on NetBSD/i386
+  (Kenji Tokudome)
+- PR#6775: Digest.file leaks file descriptor on error
+  (Valentin Gatien-Baron)
+- PR#6779: Cross-compilers cannot link bytecode using custom primitives
+  (Damien Doligez, request by whitequark)
+- PR#6787: Soundness bug with polymorphic variants
+  (Jacques Garrigue, with help from Leo White and Grégoire Henry,
+   report by Michael O'Connor)
+- PR#6790: otherlibs should be built with -g
+  (Damien Doligez, report by whitequark)
+- PR#6791: "%s@[", "%s@{" regression in Scanf
+  (Benoît Vaugon)
+- PR#6793: ocamlbuild passes nonsensical "-ocamlc ..." commands to menhir
+  (Gabriel Scherer, report by Damien Doligez)
+- PR#6799: include guards missing for unixsupport.h and other files
+  (Andreas Hauptmann)
+- PR#6810: Improve documentation of Bigarray.Genarray.map_file
+  (Mark Shinwell and Daniel Bünzli)
+- PR#6812: -short-paths and -no-alias-deps can create inconsistent assumptions
+  (Jacques Garrigue, report by Valentin Gatien-Baron)
+- PR#6817: GADT exhaustiveness breakage with modules
+  (Leo White, report by Pierre Chambart)
+- PR#6824: fix buffer sharing on partial application of Format.asprintf
+  (Gabriel Scherer, report by Alain Frisch)
+- PR#6831: Build breaks for -aspp gcc on solaris-like OSs
+  (John Tibble)
+- PR#6836: Assertion failure using -short-paths
+  (Jacques Garrigue, report by David Sheets)
+- PR#6837: Build profiling libraries on FreeBSD and NetBSD x86-64
+  (Mark Shinwell, report by Michael Grünewald)
+- PR#6841: Changing compilation unit name with -o breaks ocamldebug
+  (Jacques Garrigue, report by Jordan Walke)
+- PR#6842: export Typemod.modtype_of_package
+- PR#6843: record weak dependencies even when the .cmi is missing
+  (Leo White, Gabriel Scherer)
+- PR#6849: Inverted pattern unification error
+  (Jacques Garrigue, report by Leo White)
+- PR#6857: __MODULE__ doesn't give the current module with -o
+  (Jacques Garrigue, report by Valentin Gatien-Baron)
+- PR#6862: Exhaustiveness check wrong for class constructor arguments
+  (Jacques Garrigue)
+- PR#6869: Improve comment on [Hashtbl.hash_param]
+  (Mark Shinwell, report by Jun Furuse)
+- PR#6870: Unsoundness when -rectypes fails to detect non-contractive type
+  (Jacques Garrigue, report by Stephen Dolan)
+- PR#6872: Type-directed propagation fails to disambiguate variants
+  that are also exception constructors
+  (Jacques Garrigue, report by Romain Beauxis)
+- PR#6878: AArch64 backend generates invalid asm: conditional branch
+  out of range (Mark Shinwell, report by Richard Jones, testing by Richard
+  Jones and Xavier Leroy, code review by Xavier Leroy and Thomas Refis)
+- PR#6879: Wrong optimization of 1 mod n
+  (Mark Shinwell, report by Jean-Christophe Filliâtre)
+- PR#6884: The __CYGWIN32__ #define should be replaced with __CYGWIN__
+  (Adrien Nader)
+- PR#6886: -no-alias-deps allows to build self-referential compilation units
+  (Jacques Garrigue, report by Valentin Gatien-Baron)
+- PR#6889: ast_mapper fails to rewrite class attributes
+  (Sébastien Briais)
+- PR#6893: ocamlbuild:  "tag not used" warning when using (p)dep
+  (Gabriel Scherer, report by Christiano Haesbaert)
+- GPR#143: fix getsockopt behaviour for boolean socket options
+  (Anil Madhavapeddy and Andrew Ray)
+- GPR#190: typo in pervasives
+  (Guillaume Bury)
+- Misplaced assertion in major_gc.c for no-naked-pointers mode
+  (Stephen Dolan, Mark Shinwell)
+
+Feature wishes:
+- PR#6452, GPR#140: add internal suport for custom printing formats
+  (Jérémie Dimino)
+- PR#6641: add -g, -ocamlcflags, -ocamloptflags options to ocamlmklib
+  (whitequark)
+- PR#6693: also build libasmrun_shared.so and lib{asm,caml}run_pic.a
+  (whitequark, review by Mark Shinwell)
+- PR#6842: export Typemod.modtype_of_package
+  (Jacques Garrigue, request by Jun Furuse)
+- GPR#139: more versatile specification of locations of .annot
+  (Christophe Troestler, review by Damien Doligez)
+- GPR#171: allow custom warning printers / catchers
+  (Benjamin Canou, review by Damien Doligez)
+- GPR#191: Making gc.h and some part of memory.h public
+  (Thomas Refis)
+
+OCaml 4.02.1 (14 Oct 2014):
+---------------------------
+
+(Changes that can break existing programs are marked with a "*")
+
+Standard library:
+* Add optional argument ?limit to Arg.align.
+
+Bug Fixes:
+- PR#4099: Bug in Makefile.nt: won't stop on error
+  (George Necula)
+- PR#6181: Improve MSVC build
+  (Chen Gang)
+- PR#6207: Configure doesn't detect features correctly on Haiku
+  (Jessica Hamilton)
+- PR#6466: Non-exhaustive matching warning message for open types is confusing
+  (whitequark)
+- PR#6529: fix quadratic-time algorithm in Consistbl.extract.
+  (Xavier Leroy, Alain Frisch, relase-worthy report by Jacques-Pascal Deplaix)
+- PR#6530: Add stack overflow handling for native code (OpenBSD i386 and amd64)
+  (Cristopher Zimmermann)
+- PR#6533: broken semantics of %(%) when substituted by a box
+  (Benoît Vaugon, report by Boris Yakobowski)
+- PR#6534: legacy support for %.10s
+  (Benoît Vaugon, Gabriel Scherer, report by Nick Chapman)
+- PR#6536: better documentation of flag # in format strings
+  (Damien Doligez, report by Nick Chapman)
+- PR#6544: Bytes and CamlinternalFormat missing from threads stdlib.cma
+  (Christopher Zimmermann)
+- PR#6546: -dsource omits parens for `List ((`String "A")::[]) in patterns
+  (Gabriel Scherer, report by whitequark)
+- PR#6547: __MODULE__ aborts the compiler if the module name cannot be inferred
+  (Jacques Garrigue, report by Kaustuv Chaudhuri)
+- PR#6549: Debug section is sometimes not readable when using -pack
+  (Hugo Heuzard, review by Gabriel Scherer)
+- PR#6553: Missing command line options for ocamldoc
+  (Maxence Guesdon)
+- PR#6554: fix race condition when retrieving backtraces
+  (Jérémie Dimino, Mark Shinwell).
+- PR#6557: String.sub throws Invalid_argument("Bytes.sub")
+  (Damien Doligez, report by Oliver Bandel)
+- PR#6562: Fix ocamldebug module source lookup
+  (Leo White)
+- PR#6563: Inclusion of packs failing to run module initializers
+  (Jacques Garrigue, report by Mark Shinwell)
+- PR#6564: infinite loop in Mtype.remove_aliases
+  (Jacques Garrigue, report by Mark Shinwell)
+- PR#6565: compilation fails with Env.Error(_)
+  (Jacques Garrigue and Mark Shinwell)
+- PR#6566: -short-paths and signature inclusion errors
+  (Jacques Garrigue, report by Mark Shinwell)
+- PR#6572: Fatal error with recursive modules
+  (Jacques Garrigue, report by Quentin Stievenart)
+- PR#6575: Array.init evaluates callback although it should not do so
+  (Alain Frisch, report by Gerd Stolpmann)
+- PR#6578: Recursive module containing alias causes Segmentation fault
+  (Jacques Garrigue)
+- PR#6581: Some bugs in generative functors
+  (Jacques Garrigue, report by Mark Shinwell)
+- PR#6584: ocamldep support for "-open M"
+  (Gabriel Scherer, review by Damien Doligez, report by Hezekiah M. Carty)
+- PR#6588: Code generation errors for ARM
+  (Mark Shinwell, Xavier Leroy)
+- PR#6590: Improve Windows (MSVC and mingw) build
+  (Chen Gang)
+- PR#6599: ocamlbuild: add -bin-annot when using -pack
+  (Christopher Zimmermann)
+- PR#6602: Fatal error when tracing a function with abstract type
+  (Jacques Garrigue, report by Hugo Herbelin)
+- ocamlbuild: add an -ocamlmklib option to change the ocamlmklib command
+  (Jérôme Vouillon)
+
+OCaml 4.02.0 (29 Aug 2014):
+---------------------------
+
+(Changes that can break existing programs are marked with a "*")
+
+Language features:
+- Attributes and extension nodes
+  (Alain Frisch)
+- Generative functors (PR#5905)
+  (Jacques Garrigue)
+* Module aliases
+  (Jacques Garrigue)
+* Alternative syntax for string literals {id|...|id} (can break comments)
+  (Alain Frisch)
+- Separation between read-only strings (type string) and read-write byte
+  sequences (type bytes). Activated by command-line option -safe-string.
+  (Damien Doligez)
+- PR#6318: Exception cases in pattern matching
+  (Jeremy Yallop, backend by Alain Frisch)
+- PR#5584: Extensible open datatypes
+  (Leo White)
+
+Build system for the OCaml distribution:
+- Use -bin-annot when building.
+- Use GNU make instead of portable makefiles.
+- Updated build instructions for 32-bit Mac OS X on Intel hardware.
+
+Shedding weight:
+* Removed Camlp4 from the distribution, now available as third-party software.
+* Removed Labltk from the distribution, now available as a third-party library.
+
+Type system:
+* PR#6235: Keep typing of pattern cases independent in principal mode
+  (i.e. information from previous cases is no longer used when typing
+  patterns; cf. 'PR#6235' in testsuite/test/typing-warnings/records.ml)
+  (Jacques Garrigue)
+- Allow opening a first-class module or applying a generative functor
+  in the body of a generative functor. Allow it also in the body of
+  an applicative functor if no types are created
+  (Jacques Garrigue, suggestion by Leo White)
+* Module aliases are now typed in a specific way, which remembers their
+  identity. Compiled interfaces become smaller, but may depend on the
+  original modules. This also changes the signature inferred by
+  "module type of".
+  (Jacques Garrigue, feedback from Leo White, Mark Shinwell and Nick Chapman)
+- PR#6331: Slight change in the criterion to distinguish private
+  abbreviations and private row types: create a private abbreviation for
+  closed objects and fixed polymorphic variants.
+  (Jacques Garrigue)
+* PR#6333: Compare first class module types structurally rather than
+  nominally. Value subtyping allows module subtyping as long as the internal
+  representation is unchanged.
+  (Jacques Garrigue)
+
+Compilers:
+- More aggressive constant propagation, including float and
+  int32/int64/nativeint arithmetic.  Constant propagation for floats
+  can be turned off with option -no-float-const-prop, for codes that
+  change FP rounding modes at run-time.
+  (Xavier Leroy)
+- New back-end optimization pass: common subexpression elimination (CSE).
+  (Reuses results of previous computations instead of recomputing them.)
+  (Xavier Leroy)
+- New back-end optimization pass: dead code elimination.
+  (Removes arithmetic and load instructions whose results are unused.)
+  (Xavier Leroy)
+- PR#6269: Optimization of sequences of string patterns
+  (Benoît Vaugon and Luc Maranget)
+- Experimental native code generator for AArch64 (ARM 64 bits)
+  (Xavier Leroy)
+- PR#6042: Optimization of integer division and modulus by constant divisors
+  (Xavier Leroy and Phil Denys)
+- Add "-open" command line flag for opening a single module before typing
+  (Leo White, Mark Shinwell and Nick Chapman)
+* "-o" now sets module name to the output file name up to the first "."
+  (it also applies when "-o" is not given, i.e. the module name is then
+   the input file name up to the first ".")
+  (Leo White, Mark Shinwell and Nick Chapman)
+* PR#5779: better sharing of structured constants
+  (Alain Frisch)
+- PR#5817: new flag to keep locations in cmi files
+  (Alain Frisch)
+- PR#5854: issue warning 3 when referring to a value marked with
+  the [@@ocaml.deprecated] attribute
+  (Alain Frisch, suggestion by Pierre-Marie Pédrot)
+- PR#6017: a new format implementation based on GADTs
+  (Benoît Vaugon and Gabriel Scherer)
+* PR#6203: Constant exception constructors no longer allocate
+  (Alain Frisch)
+- PR#6260: avoid unnecessary boxing in let
+  (Vladimir Brankov)
+- PR#6345: Better compilation of optional arguments with default values
+  (Alain Frisch, review by Jacques Garrigue)
+- PR#6389: ocamlopt -opaque option for incremental native compilation
+  (Pierre Chambart, Gabriel Scherer)
+
+Toplevel interactive system:
+- PR#5377: New "#show_*" directives
+  (ygrek, Jacques Garrigue and Alain Frisch)
+
+Runtime system:
+- New configure option "-no-naked-pointers" to improve performance by
+  avoiding page table tests during block darkening and the marking phase
+  of the major GC.  In this mode, all out-of-heap pointers must point at
+  things that look like OCaml values: in particular they must have a valid
+  header.  The colour of said headers should be black.
+  (Mark Shinwell, reviews by Damien Doligez and Xavier Leroy)
+- Fixed bug in native code version of [caml_raise_with_string] that could
+  potentially lead to heap corruption.
+  (Mark Shinwell)
+* Blocks initialized by [CAMLlocal*] and [caml_alloc] are now filled with
+  [Val_unit] rather than zero.
+  (Mark Shinwell)
+- Fixed a major performance problem on large heaps (~1GB) by making heap
+  increments proportional to heap size by default
+  (Damien Doligez)
+- PR#4765: Structural equality treats exception specifically
+  (Alain Frisch)
+- PR#5009: efficient comparison/indexing of exceptions
+  (Alain Frisch, request by Markus Mottl)
+- PR#6075: avoid using unsafe C library functions (strcpy, strcat, sprintf)
+  (Xavier Leroy, reports from user 'jfc' and Anil Madhavapeddy)
+- An ISO C99-compliant C compiler and standard library is now assumed.
+  (Plus special exceptions for MSVC.)  In particular, emulation code for
+  64-bit integer arithmetic was removed, the C compiler must support a
+  64-bit integer type.
+  (Xavier Leroy)
+
+Standard library:
+* Add new modules Bytes and BytesLabels for mutable byte sequences.
+  (Damien Doligez)
+- PR#4986: add List.sort_uniq and Set.of_list
+  (Alain Frisch)
+- PR#5935: a faster version of "raise" which does not maintain the backtrace
+  (Alain Frisch)
+- PR#6146: support "Unix.kill pid Sys.sigkill" under Windows
+  (Romain Bardou and Alain Frisch)
+- PR#6148: speed improvement for Buffer
+  (John Whitington)
+- PR#6180: efficient creation of uninitialized float arrays
+  (Alain Frisch, request by Markus Mottl)
+- PR#6355: Improve documentation regarding finalisers and multithreading
+  (Daniel Bünzli, Mark Shinwell)
+- Trigger warning 3 for all values marked as deprecated in the documentation.
+  (Damien Doligez)
+
+OCamldoc:
+- PR#6257: handle full doc comments for variant constructors and
+  record fields
+  (Maxence Guesdon, request by ygrek)
+- PR#6274: allow doc comments on object types
+  (Thomas Refis)
+- PR#6310: fix ocamldoc's subscript/superscript CSS font size
+  (Anil Madhavapeddy)
+- PR#6425: fix generation of man pages
+  (Maxence Guesdon, report by Anil Madhavapeddy)
+
+Bug fixes:
+- PR#2719: wrong scheduling of bound checks within a
+  try...with Invalid_argument -> _ ...  (Xavier Leroy)
+- PR#4719: Sys.executable_name wrong if executable name contains dots (Windows)
+  (Alain Frisch, report by Bart Jacobs)
+- PR#5406 ocamlbuild: "tag 'package' does not expect a parameter"
+  (Gabriel Scherer)
+- PR#5598, PR#6165: Alterations to handling of \013 in source files
+  breaking other tools
+  (David Allsopp and Damien Doligez)
+- PR#5820: Fix camlp4 lexer roll back problem
+  (Hongbo Zhang)
+- PR#5946: CAMLprim taking (void) as argument
+  (Benoît Vaugon)
+- PR#6038: on x86-32, enforce 16-byte stack alignment for compatibility
+  with recent GCC and Clang.  Win32/MSVC keeps 4-byte stack alignment.
+  (Xavier Leroy)
+- PR#6062: Fix a 4.01 camlp4 DELETE_RULE regression caused by commit 13047
+  (Hongbo Zhang, report by Christophe Troestler)
+- PR#6173: Typing error message is worse than before
+  (Jacques Garrigue and John Whitington)
+- PR#6174: OCaml compiler loops on an example using GADTs (-rectypes case)
+  (Jacques Garrigue and Grégoire Henry, report by Chantal Keller)
+- PR#6175: open! was not suppored by camlp4
+  (Hongbo Zhang)
+- PR#6184: ocamlbuild: `ocamlfind ocamldep` does not support -predicate
+  (Jacques-Pascal Deplaix)
+- PR#6194: Incorrect unused warning with first-class modules in patterns
+  (Jacques Garrigue, report by Markus Mottl and Leo White)
+- PR#6211: in toplevel interactive use, bad interaction between uncaught
+  exceptions and multiple bindings of the form "let x = a let y = b;;".
+  (Xavier Leroy)
+- PR#6216: inlining of GADT matches generates invalid assembly
+  (Xavier Leroy and Alain Frisch, report by Mark Shinwell)
+- PR#6232: Don't use [mktemp] on platforms where [mkstemp] is available
+  (Stéphane Glondu, Mark Shinwell)
+- PR#6233: out-of-bounds exceptions lose their locations on ARM, PowerPC
+  (Jacques-Henri Jourdan and Xavier Leroy,
+   report and testing by Stéphane Glondu)
+- PR#6235: Issue with type information flowing through a variant pattern
+  (Jacques Garrigue, report by Hongbo Zhang)
+- PR#6239: sometimes wrong stack alignment when raising exceptions
+           in -g mode with backtraces active
+  (Xavier Leroy, report by Yaron Minsky)
+- PR#6240: Fail to expand module type abbreviation during substyping
+  (Jacques Garrigue, report by Leo White)
+- PR#6241: Assumed inequality between paths involving functor arguments
+  (Jacques Garrigue, report by Jeremy Yallop)
+- PR#6243: Make "ocamlopt -g" more resistant to ill-formed locations
+  (Xavier Leroy, report by Pierre-Marie Pédrot)
+- PR#6262: equality of first-class modules take module aliases into account
+  (Alain Frisch and Leo White)
+- PR#6268: -DMODEL_$(MODEL) not passed when building asmrun/arm.p.o
+  (Peter Michael Green)
+- PR#6273: fix Sys.file_exists on large files (Win32)
+  (Christoph Bauer)
+- PR#6275: Soundness bug related to type constraints
+  (Jacques Garrigue, report by Leo White)
+- PR#6293: Assert_failure with invalid package type
+  (Jacques Garrigue, report by Elnatan Reisner)
+- PR#6300: ocamlbuild -use-ocamlfind conflicts with -ocamlc
+  (Gabriel Scherer)
+- PR#6302: bytecode debug information re-read from filesystem every time
+  (Jacques-Henri Jourdan)
+- PR#6307: Behavior of 'module type of' w.r.t. module aliases
+  (Jacques Garrigue, report by Alain Frisch)
+- PR#6332: Unix.open_process fails to pass empty arguments under Windows
+  (Damien Doligez, report Virgile Prevosto)
+- PR#6346: Build failure with latest version of xcode on OSX
+  (Jérémie Dimino)
+- PR#6348: Unification failure for GADT when original definition is hidden
+  (Leo White and Jacques Garrigue, report by Jeremy Yallop)
+- PR#6352: Automatic removal of optional arguments and sequencing
+  (Jacques Garrigue and Alain Frisch)
+- PR#6361: Hashtbl.hash not terminating on some lazy values w/ recursive types
+  (Xavier Leroy, report by Leo White)
+- PR#6383: Exception Not_found when using object type in absent module
+  (Jacques Garrigue, report by Sébastien Briais)
+- PR#6384: Uncaught Not_found exception with a hidden .cmi file
+  (Leo White)
+- PR#6385: wrong allocation of large closures by the bytecode interpreter
+  (Xavier Leroy, report by Stephen Dolan)
+- PR#6394: Assertion failed in Typecore.expand_path
+  (Alain Frisch and Jacques Garrigue)
+- PR#6405: unsound interaction of -rectypes and GADTs
+  (Jacques Garrigue, report by Gabriel Scherer and Benoît Vaugon)
+- PR#6408: Optional arguments given as ~?arg instead of ?arg in message
+  (Michael O'Connor)
+- PR#6411: missing libgcc_s_sjlj-1.dll in mingw (add -static-libgcc)
+  (Jun Furuse and Alain Frisch, Jonathan Protzenko and Adrien Nader)
+- PR#6436: Typos in @deprecated text in stdlib/arrayLabels.mli
+  (John Whitington)
+- PR#6439: Don't use the deprecated [getpagesize] function
+  (John Whitington, Mark Shinwell)
+- PR#6441: undetected tail-call in some mutually-recursive functions
+  (many arguments, and mutual block mixes functions and non-functions)
+  (Stefan Holdermans, review by Xavier Leroy)
+- PR#6443: ocaml segfault when List.fold_left is traced then executed
+  (Jacques Garrigue, report by user 'Reventlov')
+- PR#6451: some bugs in untypeast.ml
+  (Jun Furuse, review by Alain Frisch)
+- PR#6460: runtime assertion failure with large [| e1;...eN |]
+  float array expressions
+  (Leo White)
+- PR#6463: -dtypedtree fails on class fields
+  (Leo White)
+- PR#6469: invalid -dsource printing of "external _pipe = ...", "Pervasives.(!)"
+  (Gabriel Scherer and Damien Doligez, user 'ngunn')
+- PR#6482: ocamlbuild fails when _tags file in unhygienic directory
+  (Gabriel Scherer)
+- PR#6502: ocamlbuild spurious warning on "use_menhir" tag
+  (Xavier Leroy)
+- PR#6505: Missed Type-error leads to a segfault upon record access
+  (Jacques Garrigue, Jeremy Yallop, report by Christoph Höger)
+- PR#6507: crash on AArch64 resulting from incorrect setting of
+  [caml_bottom_of_stack].  (Richard Jones, Mark Shinwell)
+- PR#6509: add -linkall flag to ocamlcommon.cma
+  (Frédéric Bour)
+- PR#6513: Fatal error Ctype.Unify(_) in functor type
+- PR#6523: failure upon character bigarray access, and unnecessary change
+  in comparison ordering (Jeremy Yallop, Mark Shinwell)
+- bound-checking bug in caml_string_{get,set}{16,32,64}
+  (Pierre Chambart and Gabriel Scherer, report by Nicolas Trangez)
+- sometimes wrong stack alignment at out-of-bounds array access
+  (Gabriel Scherer and Xavier Leroy, report by Pierre Chambart)
+
+Features wishes:
+- PR#4243: make the Makefiles parallelizable
+  (Grégoire Henry and Damien Doligez)
+- PR#4323: have "of_string" in Num and Big_int work with binary and
+           hex representations
+  (Zoe Paraskevopoulou, review by Gabriel Scherer)
+- PR#4771: Clarify documentation of Dynlink.allow_only
+  (Damien Doligez, report by David Allsopp)
+- PR#4855: 'camlp4 -I +dir' accepted, dir is relative to 'camlp4 -where'
+  (Jun Furuse and Hongbo Zhang, report by Dmitry Grebeniuk)
+- PR#5201: ocamlbuild: add --norc to the bash invocation to help performances
+  (Daniel Weil)
+- PR#5650: Camlp4FoldGenerator doesn't handle well "abstract" types
+  (Hongbo Zhang)
+- PR#5808: allow simple patterns, not just identifiers, in "let p : t = ..."
+  (Alain Frisch)
+- PR#5851: warn when -r is disabled because no _tags file is present
+  (Gabriel Scherer)
+- PR#5899: a programmer-friendly access to backtrace information
+  (Jacques-Henri Jourdan and Gabriel Scherer)
+- PR#6000 comment 9644: add a warning for non-principal coercions to format
+  (Jacques Garrigue, report by Damien Doligez)
+- PR#6054: add support for M.[ foo ], M.[| foo |] etc.
+  (Kaustuv Chaudhuri)
+- PR#6064: GADT representation for Bigarray.kind + CAML_BA_CHAR runtime kind
+  (Jeremy Yallop, review by Gabriel Scherer)
+- PR#6071: Add a -noinit option to the toplevel
+  (David Sheets)
+- PR#6087: ocamlbuild, improve _tags parsing of escaped newlines
+  (Gabriel Scherer, request by Daniel Bünzli)
+- PR#6109: Typos in ocamlbuild error messages
+  (Gabriel Kerneis)
+- PR#6116: more efficient implementation of Digest.to_hex
+  (ygrek)
+- PR#6142: add cmt file support to ocamlobjinfo
+  (Anil Madhavapeddy)
+- PR#6166: document -ocamldoc option of ocamlbuild
+  (Xavier Clerc)
+- PR#6182: better message for virtual objects and class types
+  (Leo White, Stephen Dolan)
+- PR#6183: enhanced documentation for 'Unix.shutdown_connection'
+  (Anil Madhavapeddy, report by Jun Furuse)
+- PR#6187: ocamlbuild: warn when using -plugin-tag(s) without myocamlbuild.ml
+  (Jacques-Pascal Deplaix)
+- PR#6246: allow wildcard _ as for-loop index
+  (Alain Frisch, request by ygrek)
+- PR#6267: more information printed by "bt" command of ocamldebug
+  (Josh Watzman)
+- PR#6270: remove need for -I directives to ocamldebug in common case
+  (Josh Watzman, review by Xavier Clerc and Alain Frisch)
+- PR#6311: Improve signature mismatch error messages
+  (Alain Frisch, suggestion by Daniel Bünzli)
+- PR#6358: obey DESTDIR in install targets
+  (Gabriel Scherer, request by François Berenger)
+- PR#6388, PR#6424: more parsetree correctness checks for -ppx users
+  (Alain Frisch, request by whitequark and Jun Furuse)
+- PR#6406: Expose OCaml version in C headers
+  (whitequark and Romain Calascibetta)
+- PR#6446: improve "unused declaration" warnings wrt. name shadowing
+  (Alain Frisch)
+- PR#6495: ocamlbuild tags 'safe_string', 'unsafe_string'
+  (Anil Madhavapeddy)
+- PR#6497: pass context information to -ppx preprocessors
+  (whitequark, Alain Frisch)
+- ocamllex: user-definable refill action
+  (Frédéric Bour, review by Gabriel Scherer and Luc Maranget)
+- shorten syntax for functor signatures: "functor (M1:S1) (M2:S2) .. -> .."
+  (Thomas Gazagnaire and Jeremy Yallop, review by Gabriel Scherer)
+- make ocamldebug -I auto-detection work with ocamlbuild
+  (Josh Watzman)
+
+OCaml 4.01.0 (12 Sep 2013):
+---------------------------
+
+(Changes that can break existing programs are marked with a "*")
+
+Other libraries:
+- Labltk: updated to Tcl/Tk 8.6.
+
+Type system:
+- PR#5759: use well-disciplined type information propagation to
+  disambiguate label and constructor names
+  (Jacques Garrigue, Alain Frisch and Leo White)
+* Propagate type information towards pattern-matching, even in the presence of
+  polymorphic variants (discarding only information about possibly-present
+  constructors). As a result, matching against absent constructors is no longer
+  allowed for exact and fixed polymorphic variant types.
+  (Jacques Garrigue)
+* PR#6035: Reject multiple declarations of the same method or instance variable
+  in an object
+  (Alain Frisch)
+
+Compilers:
+- PR#5861: raise an error when multiple private keywords are used in type
+  declarations
+  (Hongbo Zhang)
+- PR#5634: parsetree rewriter (-ppx flag)
+  (Alain Frisch)
+- ocamldep now supports -absname
+  (Alain Frisch)
+- PR#5768: On "unbound identifier" errors, use spell-checking to suggest names
+  present in the environment
+  (Gabriel Scherer)
+- ocamlc has a new option -dsource to visualize the parsetree
+  (Alain Frisch, Hongbo Zhang)
+- tools/eqparsetree compares two parsetree ignoring location
+  (Hongbo Zhang)
+- ocamlopt now uses clang as assembler on OS X if available, which enables
+  CFI support for OS X.
+  (Benedikt Meurer)
+- Added a new -short-paths option, which attempts to use the shortest
+  representation for type constructors inside types, taking open modules
+  into account. This can make types much more readable if your code
+  uses lots of functors.
+  (Jacques Garrigue)
+- PR#5986: added flag -compat-32 to ocamlc, ensuring that the generated
+  bytecode executable can be loaded on 32-bit hosts.
+  (Xavier Leroy)
+- PR#5980: warning on open statements which shadow an existing
+  identifier (if it is actually used in the scope of the open); new
+  open! syntax to silence it locally
+  (Alain Frisch, thanks to a report of Daniel Bünzli)
+* warning 3 is extended to warn about other deprecated features:
+  - ISO-latin1 characters in identifiers
+  - uses of the (&) and (or) operators instead of (&&) and (||)
+  (Damien Doligez)
+- Experimental OCAMLPARAM for ocamlc and ocamlopt
+  (Fabrice Le Fessant)
+- PR#5571: incorrect ordinal number in error message
+  (Alain Frisch, report by John Carr)
+- PR#6073: add signature to Tstr_include
+  (patch by Leo White)
+
+Standard library:
+- PR#5899: expose a way to inspect the current call stack,
+  Printexc.get_callstack
+  (Gabriel Scherer, Jacques-Henri Jourdan, Alain Frisch)
+- PR#5986: new flag Marshal.Compat_32 for the serialization functions
+  (Marshal.to_*), forcing the output to be readable on 32-bit hosts.
+  (Xavier Leroy)
+- infix application operators |> and @@ in Pervasives
+  (Fabrice Le Fessant)
+- PR#6176: new Format.asprintf function with a %a formatter
+  compatible with Format.fprintf (unlike Format.sprintf)
+  (Pierre Weis)
+
+Other libraries:
+- PR#5568: add O_CLOEXEC flag to Unix.openfile, so that the returned
+  file descriptor is created in close-on-exec mode
+  (Xavier Leroy)
+
+Runtime system:
+* PR#6019: more efficient implementation of caml_modify() and caml_initialize().
+  The new implementations are less lenient than the old ones: now,
+  the destination pointer of caml_modify() must point within the minor or
+  major heaps, and the destination pointer of caml_initialize() must
+  point within the major heap.
+  (Xavier Leroy, from an experiment by Brian Nigito, with feedback
+  from Yaron Minsky and Gerd Stolpmann)
+
+Internals:
+- Moved debugger/envaux.ml to typing/envaux.ml to publish env_of_only_summary
+  as part of compilerlibs, to be used on bin-annot files.
+  (Fabrice Le Fessant)
+- The test suite can now be run without installing OCaml first.
+  (Damien Doligez)
+
+Bug fixes:
+- PR#3236: Document the fact that queues are not thread-safe
+  (Damien Doligez)
+- PR#3468: (part 1) Sys_error documentation
+  (Damien Doligez)
+- PR#3679: Warning display problems
+  (Fabrice Le Fessant)
+- PR#3963: Graphics.wait_next_event in Win32 hangs if window closed
+  (Damien Doligez)
+- PR#4079: Queue.copy is now tail-recursive
+  (patch by Christophe Papazian)
+- PR#4138: Documentation for Unix.mkdir
+  (Damien Doligez)
+- PR#4469: emacs mode: caml-set-compile-command is annoying with ocamlbuild
+  (Daniel Bünzli)
+- PR#4485: Graphics: Keyboard events incorrectly delivered in native code
+  (Damien Doligez, report by Sharvil Nanavati)
+- PR#4502: ocamlbuild now reliably excludes the build-dir from hygiene check
+  (Gabriel Scherer, report by Romain Bardou)
+- PR#4762: ?? is not used at all, but registered as a lexer token
+  (Alain Frisch)
+- PR#4788: wrong error message when executable file is not found for backtrace
+  (Damien Doligez, report by Claudio Sacerdoti Coen)
+- PR#4812: otherlibs/unix: add extern int code_of_unix_error (value error);
+  (Goswin von Berdelow)
+- PR#4887: input_char after close_in crashes ocaml (msvc runtime)
+  (Alain Frisch and Christoph Bauer, report by ygrek)
+- PR#4994: ocaml-mode doesn't work with xemacs21
+  (Damien Doligez, report by Stéphane Glondu)
+- PR#5098: creating module values may lead to memory leaks
+  (Alain Frisch, report by Milan Stanojević)
+- PR#5102: ocamlbuild fails when using an unbound variable in rule dependency
+  (Xavier Clerc, report by Daniel Bünzli)
+* PR#5119: camlp4 now raises a specific exception when 'DELETE_RULE' fails,
+  rather than raising 'Not_found'
+  (ygrek)
+- PR#5121: %( %) in Format module seems to be broken
+  (Pierre Weis, first patch by Valentin Gatien-Baron, report by Khoo Yit Phang)
+- PR#5178: document in INSTALL how to build a 32-bit version under Linux x86-64
+  (Benjamin Monate)
+- PR#5212: Improve ocamlbuild error messages of _tags parser
+  (ygrek)
+- PR#5240: register exception printers for Unix.Unix_error and Dynlink.Error
+  (Jérémie Dimino)
+- PR#5300: ocamlbuild: verbose parameter should implicitly set classic display
+  (Xavier Clerc, report by Robert Jakob)
+- PR#5327: (Windows) Unix.select blocks if same socket listed in first and
+  third arguments
+  (David Allsopp, displaying impressive MSDN skills)
+- PR#5343: ocaml -rectypes is unsound wrt module subtyping (was still unsound)
+  (Jacques Garrigue)
+- PR#5350: missing return code checks in the runtime system
+  (Xavier Leroy)
+- PR#5468: ocamlbuild should preserve order of parametric tags
+  (Wojciech Meyer, report by Dario Texeira)
+- PR#5551: Avoid repeated lookups for missing cmi files
+  (Alain Frisch)
+- PR#5552: unrecognized gcc option -no-cpp-precomp
+  (Damien Doligez, report by Markus Mottl)
+* PR#5580: missed opportunities for constant propagation
+  (Xavier Leroy and John Carr)
+- PR#5611: avoid clashes betwen .cmo files and output files during linking
+  (Wojciech Meyer)
+- PR#5662: typo in md5.c
+  (Olivier Andrieu)
+- PR#5673: type equality in a polymorphic field
+  (Jacques Garrigue, report by Jean-Louis Giavitto)
+- PR#5674: Methods call are 2 times slower with 4.00 than with 3.12
+  (Jacques Garrigue, Gabriel Scherer, report by Jean-Louis Giavitto)
+- PR#5694: Exception raised by type checker
+  (Jacques Garrigue, report by Markus Mottl)
+- PR#5695: remove warnings on sparc code emitter
+  (Fabrice Le Fessant)
+- PR#5697: better location for warnings on statement expressions
+  (Dan Bensen)
+- PR#5698: remove harcoded limit of 200000 labels in emitaux.ml
+  (Fabrice Le Fessant, report by Marcin Sawicki)
+- PR#5702: bytecomp/bytelibrarian lib_sharedobjs was defined but never used
+  (Hongbo Zhang, Fabrice Le Fessant)
+- PR#5708: catch Failure"int_of_string" in ocamldebug
+  (Fabrice Le Fessant, report by user 'schommer')
+- PR#5712: (9) new option -bin-annot is not documented
+  (Damien Doligez, report by Hendrik Tews)
+- PR#5731: instruction scheduling forgot to account for destroyed registers
+  (Xavier Leroy, Benedikt Meurer, reported by Jeffrey Scofield)
+- PR#5734: improved Win32 implementation of Unix.gettimeofday
+  (David Allsopp)
+- PR#5735: %apply and %revapply not first class citizens
+  (Fabrice Le Fessant, reported by Jun Furuse)
+- PR#5738: first class module patterns not handled by ocamldep
+  (Fabrice Le Fessant, Jacques Garrigue, reported by Hongbo Zhang)
+- PR#5739: Printf.printf "%F" (-.nan) returns -nan
+  (Xavier Leroy, David Allsopp, reported by Samuel Mimram)
+- PR#5741: make pprintast.ml in compiler_libs
+  (Alain Frisch, Hongbo Zhang)
+- PR#5747: 'unused open' warning not given when compiling with -annot
+  (Alain Frisch, reported by Valentin Gatien-Baron)
+- PR#5752: missing dependencies at byte-code link with mlpack
+  (Wojciech Meyer, Nicholas Lucaroni)
+- PR#5763: ocamlbuild does not give correct flags when running menhir
+  (Gabriel Scherer, reported by Philippe Veber)
+- PR#5765: ocamllex doesn't preserve line directives
+  (Damien Doligez, reported by Martin Jambon)
+- PR#5770: Syntax error messages involving unclosed parens are sometimes
+  incorrect
+  (Michel Mauny)
+- PR#5772: problem with marshaling of mutually-recursive functions
+  (Jacques-Henri Jourdan, reported by Cédric Pasteur)
+- PR#5775: several bug fixes for tools/pprintast.ml
+  (Hongbo Zhang)
+- PR#5784: -dclambda option is ignored
+  (Pierre Chambart)
+- PR#5785: misbehaviour with abstracted structural type used as GADT index
+  (Jacques Garrigue, report by Jeremy Yallop)
+- PR#5787: Bad behavior of 'Unused ...' warnings in the toplevel
+  (Alain Frisch)
+- PR#5793: integer marshalling is inconsistent between architectures
+  (Xavier Clerc, report by Pierre-Marie Pédrot)
+- PR#5798: add ARM VFPv2 support for Raspbian (ocamlopt)
+  (Jeffrey Scofield and Anil Madhavapeddy, patch review by Benedikt Meurer)
+- PR#5802: Avoiding "let" as a value name
+  (Jacques Garrigue, report by Tiphaine Turpin)
+- PR#5805: Assert failure with warning 34 on pre-processed file
+  (Alain Frisch, report by Tiphaine Turpin)
+- PR#5806: ensure that backtrace tests are always run (testsuite)
+  (Xavier Clerc, report by user 'michi')
+- PR#5809: Generating .cmt files takes a long time, in case of type error
+  (Alain Frisch)
+- PR#5810: error in switch printing when using -dclambda
+  (Pierre Chambart)
+- PR#5811: Untypeast produces singleton tuples for constructor patterns
+  with only one argument
+  (Tiphaine Turpin)
+- PR#5813: GC not called when unmarshaling repeatedly in a tight loop (ocamlopt)
+  (Xavier Leroy, report by David Waern)
+- PR#5814: read_cmt -annot does not report internal references
+  (Alain Frisch)
+- PR#5815: Multiple exceptions in signatures gives an error
+  (Leo White)
+- PR#5816: read_cmt -annot does not work for partial .cmt files
+  (Alain Frisch)
+- PR#5819: segfault when using [with] on large recursive record (ocamlopt)
+  (Xavier Leroy, Damien Doligez)
+- PR#5821: Wrong record field is reported as duplicate
+  (Alain Frisch, report by Martin Jambon)
+- PR#5824: Generate more efficient code for immediate right shifts.
+  (Pierre Chambart, review by Xavier Leroy)
+- PR#5825: Add a toplevel primitive to use source file wrapped with the
+  coresponding module
+  (Grégoire Henry, Wojciech Meyer, caml-list discussion)
+- PR#5833: README.win32 can leave the wrong flexlink in the path
+  (Damien Doligez, report by William Smith)
+- PR#5835: nonoptional labeled arguments can be passed with '?'
+  (Jacques Garrigue, report by Elnatan Reisner)
+- PR#5840: improved documentation for 'Unix.lseek'
+  (Xavier Clerc, report by Matej Košík)
+- PR#5848: Assertion failure in type checker
+  (Jacques Garrigue, Alain Frisch, report by David Waern)
+- PR#5858: Assert failure during typing of class
+  (Jacques Garrigue, report by Julien Signoles)
+- PR#5865: assert failure when reporting undefined field label
+  (Jacques Garrigue, report by Anil Madhavapeddy)
+- PR#5872: Performance: Buffer.add_char is not inlined
+  (Gerd Stolpmann, Damien Doligez)
+- PR#5876: Uncaught exception with a typing error
+  (Alain Frisch, Gabriel Scherer, report by Julien Moutinho)
+- PR#5877: multiple "open" can become expensive in memory
+  (Fabrice Le Fessant and Alain Frisch)
+- PR#5880: 'Genlex.make_lexer' documention mentions the wrong exception
+  (Xavier Clerc, report by Virgile Prevosto)
+- PR#5885: Incorrect rule for compiling C stubs when shared libraries are not
+  supported.
+  (Jérôme Vouillon)
+- PR#5891: ocamlbuild: support rectypes tag for mlpack
+  (Khoo Yit Phang)
+- PR#5892: GADT exhaustiveness check is broken
+  (Jacques Garrigue and Leo White)
+- PR#5906: GADT exhaustiveness check is still broken
+  (Jacques Garrigue, report by Sébastien Briais)
+- PR#5907: Undetected cycle during typecheck causes exceptions
+  (Jacques Garrigue, report by Pascal Zimmer)
+- PR#5910: Fix code generation bug for "mod 1" on ARM.
+  (Benedikt Meurer, report by user 'jteg68')
+- PR#5911: Signature substitutions fail in submodules
+  (Jacques Garrigue, report by Markus Mottl)
+- PR#5912: add configure option -no-cfi (for OSX 10.6.x with XCode 4.0.2)
+  (Damien Doligez against XCode versions, report by Thomas Gazagnaire)
+- PR#5914: Functor breaks with an equivalent argument signature
+  (Jacques Garrigue, report by Markus Mottl and Grégoire Henry)
+- PR#5920, PR#5957: linking failure for big bytecodes on 32bit architectures
+  (Benoît Vaugon and Chet Murthy, report by Jun Furuse and Sebastien Mondet)
+- PR#5928: Missing space between words in manual page for ocamlmktop
+  (Damien Doligez, report by Matej Košík)
+- PR#5930: ocamldep leaks temporary preprocessing files
+  (Gabriel Scherer, report by Valentin Gatien-Baron)
+- PR#5933: Linking is slow when there are functions with large arities
+  (Valentin Gatien-Baron, review by Gabriel Scherer)
+- PR#5934: integer shift by negative amount (in otherlibs/num)
+  (Xavier Leroy, report by John Regehr)
+- PR#5944: Bad typing performances of big variant type declaration
+  (Benoît Vaugon)
+- PR#5945: Mix-up of Minor_heap_min and Minor_heap_max units
+  (Benoît Vaugon)
+- PR#5948: GADT with polymorphic variants bug
+  (Jacques Garrigue, report by Leo White)
+- PR#5953: Unix.system does not handle EINTR
+  (Jérémie Dimino)
+- PR#5965: disallow auto-reference to a recursive module in its definition
+  (Alain Frisch, report by Arthur Windler via Gabriel Scherer)
+- PR#5973: Format module incorrectly parses format string
+  (Pierre Weis, report by Frédéric Bour)
+- PR#5974: better documentation for Str.regexp
+  (Damien Doligez, report by william)
+- PR#5976: crash after recovering from two stack overflows (ocamlopt on MacOS X)
+  (Xavier Leroy, report by Pierre Boutillier)
+- PR#5977: Build failure on raspberry pi: "input_value: integer too large"
+  (Alain Frisch, report by Sylvain Le Gall)
+- PR#5981: Incompatibility check assumes abstracted types are injective
+  (Jacques Garrigue, report by Jeremy Yallop)
+- PR#5982: caml_leave_blocking section and errno corruption
+  (Jérémie Dimino)
+- PR#5985: Unexpected interaction between variance and GADTs
+  (Jacques Garrigue, Jeremy Yallop and Leo White and Gabriel Scherer)
+- PR#5988: missing from the documentation: -impl is a valid flag for ocamlopt
+  (Damien Doligez, report by Vincent Bernardoff)
+- PR#5989: Assumed inequalities involving private rows
+  (Jacques Garrigue, report by Jeremy Yallop)
+- PR#5992: Crash when pattern-matching lazy values modifies the scrutinee
+  (Luc Maranget, Leo White)
+- PR#5993: Variance of private type abbreviations not checked for modules
+  (Jacques Garrigue)
+- PR#5997: Non-compatibility assumed for concrete types with same constructor
+  (Jacques Garrigue, report by Gabriel Scherer)
+- PR#6004: Type information does not flow to "inherit" parameters
+  (Jacques Garrigue, report by Alain Frisch)
+- PR#6005: Type unsoundness with recursive modules
+  (Jacques Garrigue, report by Jérémie Dimino and Josh Berdine)
+- PR#6010: Big_int.extract_big_int gives wrong results on negative arguments
+  (Xavier Leroy, report by Drake Wilson via Stéphane Glondu)
+- PR#6024: Format syntax for printing @ is incompatible with 3.12.1
+  (Damien Doligez, report by Boris Yakobowski)
+- PR#6001: Reduce the memory used by compiling Camlp4
+  (Hongbo Zhang and Gabriel Scherer, report by Henri Gouraud)
+- PR#6031: Camomile problem with -with-frame-pointers
+  (Fabrice Le Fessant, report by Anil Madhavapeddy)
+- PR#6032: better Random.self_init under Windows
+  (Alain Frisch, Xavier Leroy)
+- PR#6033: Matching.inline_lazy_force needs eta-expansion (command-line flags)
+  (Pierre Chambart, Xavier Leroy and Luc Maranget,
+   regression report by Gabriel Scherer)
+- PR#6046: testsuite picks up the wrong ocamlrun dlls
+  (Anil Madhavapeddy)
+- PR#6056: Using 'match' prevents generalization of values
+  (Jacques Garrigue, report by Elnatan Reisner)
+- PR#6058: 'ocamlbuild -use-ocamlfind -tag thread -package threads t.cma' fails
+  (Gabriel Scherer, report by Hezekiah M. Carty)
+- PR#6069: ocamldoc: lexing: empty token
+  (Maxence Guesdon, Grégoire Henry, report by ygrek)
+- PR#6072: configure does not handle FreeBSD current (i.e. 10) correctly
+  (Damien Doligez, report by Prashanth Mundkur)
+- PR#6074: Wrong error message for failing Condition.broadcast
+  (Markus Mottl)
+- PR#6084: Define caml_modify and caml_initialize as weak symbols to help
+  with Netmulticore
+  (Xavier Leroy, Gerd Stolpmann)
+- PR#6090: Module constraint + private type seems broken in ocaml 4.01.0
+  (Jacques Garrigue, report by Jacques-Pascal Deplaix)
+- PR#6109: Typos in ocamlbuild error messages
+  (Gabriel Kerneis)
+- PR#6123: Assert failure when self escapes its class
+  (Jacques Garrigue, report by whitequark)
+- PR#6158: Fatal error using GADTs
+  (Jacques Garrigue, report by Jeremy Yallop)
+- PR#6163: Assert_failure using polymorphic variants in GADTs
+  (Jacques Garrigue, report by Leo White)
+- PR#6164: segmentation fault on Num.power_num of 0/1
+  (Fabrice Le Fessant, report by Johannes Kanig)
+- PR#6210: Camlp4 location error
+  (Hongbo Zhang, report by Jun Furuse)
+
+Feature wishes:
+- PR#5181: Merge common floating point constants in ocamlopt
+  (Benedikt Meurer)
+- PR#5243: improve the ocamlbuild API documentation in signatures.mli
+  (Christophe Troestler)
+- PR#5546: moving a function into an internal module slows down its use
+  (Alain Frisch, report by Fabrice Le Fessant)
+- PR#5597: add instruction trace option 't' to OCAMLRUNPARAM
+  (Anil Madhavapeddy, Wojciech Meyer)
+- PR#5676: IPv6 support under Windows
+  (Jérôme Vouillon, review by Jonathan Protzenko)
+- PR#5721: configure -with-frame-pointers for Linux perf profiling
+  (Fabrice Le Fessant, test by Jérémie Dimino)
+- PR#5722: toplevel: print full module path only for first record field
+  (Jacques Garrigue, report by ygrek)
+- PR#5762: Add primitives for fast access to bigarray dimensions
+  (Pierre Chambart)
+- PR#5769: Allow propagation of Sys.big_endian in native code
+  (Pierre Chambart, stealth commit by Fabrice Le Fessant)
+- PR#5771: Add primitives for reading 2, 4, 8 bytes in strings and bigarrays
+  (Pierre Chambart)
+- PR#5774: Add bswap primitives for amd64 and arm
+  (Pierre Chambart, test by Alain Frisch)
+- PR#5795: Generate sqrtsd opcode instead of external call to sqrt on amd64
+  (Pierre Chambart)
+- PR#5827: provide a dynamic command line parsing mechanism
+  (Hongbo Zhang)
+- PR#5832: patch to improve "wrong file naming" error messages
+  (William Smith)
+- PR#5864: Add a find operation to Set
+  (François Berenger)
+- PR#5886: Small changes to compile for Android
+  (Jérôme Vouillon, review by Benedikt Meurer)
+- PR#5902: -ppx based pre-processor executables accept arguments
+  (Alain Frisch, report by Wojciech Meyer)
+- PR#5986: Protect against marshaling 64-bit integers in bytecode
+  (Xavier Leroy, report by Alain Frisch)
+- PR#6049: support for OpenBSD/macppc platform
+  (Anil Madhavapeddy, review by Benedikt Meurer)
+- PR#6059: add -output-obj rules for ocamlbuild
+  (Anil Madhavapeddy)
+- PR#6060: ocamlbuild tags 'principal', 'strict_sequence' and 'short_paths'
+  (Anil Madhavapeddy)
+- ocamlbuild tag 'no_alias_deps'
+  (Daniel Bünzli)
+
+Tools:
+- OCamlbuild now features a bin_annot tag to generate .cmt files.
+  (Jonathan Protzenko)
+- OCamlbuild now features a strict_sequence tag to trigger the
+  strict-sequence option.
+  (Jonathan Protzenko)
+- OCamlbuild now picks the non-core tools like ocamlfind and menhir from PATH
+  (Wojciech Meyer)
+- PR#5884: Misc minor fixes and cleanup for emacs mode
+  (Stefan Monnier)
+- PR#6030: Improve performance of -annot
+  (Guillaume Melquiond, Alain Frisch)
+
+
+OCaml 4.00.1 (5 Oct 2012):
+--------------------------
+
+Bug fixes:
+- PR#4019: better documentation of Str.matched_string
+- PR#5111: ocamldoc, heading tags inside spans tags is illegal in html
+- PR#5278: better error message when typing "make"
+- PR#5468: ocamlbuild should preserve order of parametric tags
+- PR#5563: harden Unix.select against file descriptors above FD_SETSIZE
+- PR#5690: "ocamldoc ... -text README" raises exception
+- PR#5700: crash with native-code stack backtraces under MacOS 10.8 x86-64
+- PR#5707: AMD64 code generator: do not use r10 and r11 for parameter passing,
+  as these registers can be destroyed by the dynamic loader
+- PR#5712: some documentation problems
+- PR#5715: configuring with -no-shared-libs breaks under cygwin
+- PR#5718: false positive on 'unused constructor' warning
+- PR#5719: ocamlyacc generates code that is not warning 33-compliant
+- PR#5725: ocamldoc output of preformatted code
+- PR#5727: emacs caml-mode indents shebang line in toplevel scripts
+- PR#5729: tools/untypeast.ml creates unary Pexp_tuple
+- PR#5731: instruction scheduling forgot to account for destroyed registers
+- PR#5735: %apply and %revapply not first class citizens
+- PR#5738: first class module patterns not handled by ocamldep
+- PR#5742: missing bound checks in Array.sub
+- PR#5744: ocamldoc error on "val virtual"
+- PR#5757: GC compaction bug (crash)
+- PR#5758: Compiler bug when matching on floats
+- PR#5761: Incorrect bigarray custom block size
+
+
+OCaml 4.00.0 (26 Jul 2012):
+---------------------------
+
+(Changes that can break existing programs are marked with a "*")
+
+- The official name of the language is now OCaml.
+
+Language features:
+- Added Generalized Algebraic Data Types (GADTs) to the language.
+  See chapter "Language extensions" of the reference manual for documentation.
+- It is now possible to omit type annotations when packing and unpacking
+  first-class modules. The type-checker attempts to infer it from the context.
+  Using the -principal option guarantees forward compatibility.
+- New (module M) and (module M : S) syntax in patterns, for immediate
+  unpacking of a first-class module.
+
+Compilers:
+- Revised simplification of let-alias (PR#5205, PR#5288)
+- Better reporting of compiler version mismatch in .cmi files
+* Warning 28 is now enabled by default.
+- New option -absname to use absolute paths in error messages
+- Optimize away compile-time beta-redexes, e.g. (fun x y -> e) a b.
+- Added option -bin-annot to dump the AST with type annotations.
+- Added lots of new warnings about unused variables, opens, fields,
+  constructors, etc.
+* New meaning for warning 7: it is now triggered when a method is overridden
+  with the "method" keyword.  Use "method!" to avoid the warning.
+
+Native-code compiler:
+- Optimized handling of partially-applied functions (PR#5287)
+- Small improvements in code generated for array bounds checks (PR#5345,
+  PR#5360).
+* New ARM backend (PR#5433):
+    . Supports both Linux/EABI (armel) and Linux/EABI+VFPv3 (armhf).
+    . Added support for the Thumb-2 instruction set with average code size
+      savings of 28%.
+    . Added support for position-independent code, natdynlink, profiling and
+      exception backtraces.
+- Generation of CFI information, and filename/line number debugging (with -g)
+  annotations, enabling in particular precise stack backtraces with
+  the gdb debugger. Currently supported for x86 32-bits and 64-bits only.
+  (PR#5487)
+- New tool: ocamloptp, the equivalent of ocamlcp for the native-code compiler.
+
+OCamldoc:
+- PR#5645: ocamldoc doesn't handle module/type substitution in signatures
+- PR#5544: improve HTML output (less formatting in html code)
+- PR#5522: allow refering to record fields and variant constructors
+- fix PR#5419 (error message in french)
+- fix PR#5535 (no cross ref to class after dump+load)
+* Use first class modules for custom generators, to be able to
+  load various plugins incrementally adding features to the current
+  generator
+* PR#5507: Use Location.t structures for locations.
+- fix: do not keep code when not told to keep code.
+
+Standard library:
+- Added float functions "hypot" and "copysign" (PR#3806, PR#4752, PR#5246)
+* Arg: options with empty doc strings are no longer included in the usage string
+  (PR#5437)
+- Array: faster implementations of "blit", "copy", "sub", "append" and "concat"
+  (PR#2395, PR#2787, PR#4591)
+* Hashtbl:
+    . Statistically-better generic hash function based on Murmur 3 (PR#5225)
+    . Fixed behavior of generic hash function w.r.t. -0.0 and NaN (PR#5222)
+    . Added optional "random" parameter to Hashtbl.create to randomize
+      collision patterns and improve security (PR#5572, CVE-2012-0839)
+    . Added "randomize" function and "R" parameter to OCAMLRUNPARAM
+      to turn randomization on by default (PR#5572, CVE-2012-0839)
+    . Added new functorial interface "MakeSeeded" to support randomization
+      with user-provided seeded hash functions.
+    . Install new header <caml/hash.h> for C code.
+- Filename: on-demand (lazy) initialization of the PRNG used by "temp_file".
+- Marshal: marshalling of function values (flag Marshal.Closures) now
+  also works for functions that come from dynamically-loaded modules (PR#5215)
+- Random:
+     . More random initialization (Random.self_init()), using /dev/urandom
+       when available (e.g. Linux, FreeBSD, MacOS X, Solaris)
+     * Faster implementation of Random.float (changes the generated sequences)
+- Format strings for formatted input/output revised to correct PR#5380
+    . Consistently treat %@ as a plain @ character
+    . Consistently treat %% as a plain % character
+- Scanf: width and precision for floating point numbers are now handled
+- Scanf: new function "unescaped" (PR#3888)
+- Set and Map: more efficient implementation of "filter" and "partition"
+- String: new function "map" (PR#3888)
+
+Installation procedure:
+- Compiler internals are now installed in `ocamlc -where`/compiler-libs.
+  The files available there include the .cmi interfaces for all compiler
+  modules, plus the following libraries:
+      ocamlcommon.cma/.cmxa     modules common to ocamlc, ocamlopt, ocaml
+      ocamlbytecomp.cma/.cmxa   modules for ocamlc and ocaml
+      ocamloptcomp.cma/.cmxa    modules specific to ocamlopt
+      ocamltoplevel.cma         modules specific to ocaml
+   (PR#1804, PR#4653, frequently-asked feature).
+* Some .cmi for toplevel internals that used to be installed in
+  `ocamlc -where` are now to be found in  `ocamlc -where`/compiler-libs.
+  Add "-I +compiler-libs" where needed.
+* toplevellib.cma is no longer installed because subsumed by
+  ocamlcommon.cma ocamlbytecomp.cma ocamltoplevel.cma
+- Added a configuration option (-with-debug-runtime) to compile and install
+  a debug version of the runtime system, and a compiler option
+  (-runtime-variant) to select the debug runtime.
+
+Bug Fixes:
+
+- PR#1643: functions of the Lazy module whose named started with 'lazy_' have
+  been deprecated, and new ones without the prefix added
+- PR#3571: in Bigarrays, call msync() before unmapping to commit changes
+- PR#4292: various documentation problems
+- PR#4511, PR#4838: local modules remove polymorphism
+* PR#4549: Filename.dirname is not handling multiple / on Unix
+- PR#4688: (Windows) special floating-point values aren't converted to strings
+  correctly
+- PR#4697: Unix.putenv leaks memory on failure
+- PR#4705: camlp4 does not allow to define types with `True or `False
+- PR#4746: wrong detection of stack overflows in native code under Linux
+- PR#4869: rare collisions between assembly labels for code and data
+- PR#4880: "assert" constructs now show up in the exception stack backtrace
+- PR#4892: Array.set could raise "out of bounds" before evaluating 3rd arg
+- PR#4937: camlp4 incorrectly handles optional arguments if 'option' is
+  redefined
+- PR#5024: camlp4r now handles underscores in irrefutable pattern matching of
+  records
+- PR#5064, PR#5485: try to ensure that 4K words of stack are available
+  before calling into C functions, raising a Stack_overflow exception
+  otherwise.  This reduces (but does not eliminate) the risk of
+  segmentation faults due to stack overflow in C code
+- PR#5073: wrong location for 'Unbound record field label' error
+- PR#5084: sub-sub-module building fails for native code compilation
+- PR#5120: fix the output function of Camlp4.Debug.formatter
+- PR#5131: compilation of custom runtime with g++ generates lots of warnings
+- PR#5137: caml-types-explore does not work
+- PR#5159: better documentation of type Lexing.position
+- PR#5171: Map.join does more comparisons than needed
+- PR#5176: emacs mode: stack overflow in regexp matcher
+- PR#5179: port OCaml to mingw-w64
+- PR#5211: updated Genlex documentation to state that camlp4 is mandatory for
+  'parser' keyword and associated notation
+- PR#5214: ocamlfind plugin invokes 'cut' utility
+- PR#5218: use $(MAKE) instead of "make" in Makefiles
+- PR#5224: confusing error message in non-regular type definition
+- PR#5231: camlp4: fix parsing of <:str_item< type t = $x$ >>
+- PR#5233: finaliser on weak array gives dangling pointers (crash)
+- PR#5238, PR#5277: Sys_error when getting error location
+- PR#5261, PR#5497: Ocaml source-code examples are not "copy-paste-able"
+* PR#5279: executable name is not initialized properly in caml_startup_code
+- PR#5290: added hash functions for channels, nats, mutexes, conditions
+- PR#5291: undetected loop in class initialization
+- PR#5295: OS threads: problem with caml_c_thread_unregister()
+- PR#5301: camlp4r and exception equal to another one with parameters
+- PR#5305: prevent ocamlbuild from complaining about links to _build/
+- PR#5306: comparing to Thread.self() raises exception at runtime
+- PR#5309: Queue.add is not thread/signal safe
+- PR#5310: Ratio.create_ratio/create_normalized_ratio have misleading names
+- PR#5311: better message for warning 23
+* PR#5312: command-line arguments @reponsefile auto-expansion feature
+  removed from the Windows OCaml runtime, to avoid conflicts with "-w @..."
+- PR#5313: ocamlopt -g misses optimizations
+- PR#5214: ocamlfind plugin invokes 'cut' utility
+- PR#5316: objinfo now shows ccopts/ccobjs/force_link when applicable
+- PR#5318: segfault on stack overflow when reading marshaled data
+- PR#5319: %r11 clobbered by Lswitch in Windows AMD64 native-code compilation
+- PR#5322: type abbreviations expanding to a universal type variable
+- PR#5328: under Windows, Unix.select leaves sockets in non-blocking mode
+- PR#5330: thread tag with '.top' and '.inferred.mli' targets
+- PR#5331: ocamlmktop is not always a shell script
+- PR#5335: Unix.environment segfaults after a call to clearenv
+- PR#5338: sanitize.sh has windows style end-of-lines (mingw)
+- PR#5344: some predefined exceptions need special printing
+- PR#5349: Hashtbl.replace uses new key instead of reusing old key
+- PR#5356: ocamlbuild handling of 'predicates' for ocamlfind
+- PR#5364: wrong compilation of "((val m : SIG1) : SIG2)"
+- PR#5370: ocamldep omits filename in syntax error message
+- PR#5374: camlp4 creates wrong location for type definitions
+- PR#5380: strange sscanf input segfault
+- PR#5382: EOPNOTSUPP and ENOTSUPP different on exotic platforms
+- PR#5383: build failure in Win32/MSVC
+- PR#5387: camlp4: str_item and other syntactic elements with Nils are
+  not very usable
+- PR#5389: compaction sometimes leaves a very large heap
+- PR#5393: fails to build from source on GNU/kFreeBSD because of -R link option
+- PR#5394: documentation for -dtypes is missing in manpage
+- PR#5397: Filename.temp_dir_name should be mutable
+- PR#5410: fix printing of class application with Camlp4
+- PR#5416: (Windows) Unix.(set|clear)_close_on_exec now preserves blocking mode
+- PR#5435: ocamlbuild does not find .opt executables on Windows
+- PR#5436: update object ids on unmarshaling
+- PR#5442: camlp4: quotation issue with strings
+- PR#5453: configure doesn't find X11 under Ubuntu/MultiarchSpec
+- PR#5461: Double linking of bytecode modules
+- PR#5463: Bigarray.*.map_file fail if empty array is requested
+- PR#5465: increase stack size of ocamlopt.opt for windows
+- PR#5469: private record type generated by functor loses abbreviation
+- PR#5475: Wrapper script for interpreted LablTk wrongly handles command line
+  parameters
+- PR#5476: bug in native code compilation of let rec on float arrays
+- PR#5477: use pkg-config to configure graphics on linux
+- PR#5481: update camlp4 magic numbers
+- PR#5482: remove bashism in test suite scripts
+- PR#5495: camlp4o dies on infix definition (or)
+- PR#5498: Unification with an empty object only checks the absence of
+  the first method
+- PR#5503: error when ocamlbuild is passed an absolute path as build directory
+- PR#5509: misclassification of statically-allocated empty array that
+  falls exactly at beginning of an otherwise unused data page.
+- PR#5510: ocamldep has duplicate -ml{,i}-synonym options
+- PR#5511: in Bigarray.reshape, unwarranted limitation on new array dimensions.
+- PR#5513: Int64.div causes floating point exception (ocamlopt, x86)
+- PR#5516: in Bigarray C stubs, use C99 flexible array types if possible
+- PR#5518: segfault with lazy empty array
+- PR#5531: Allow ocamlbuild to add ocamldoc flags through -docflag
+  and -docflags switches
+- PR#5538: combining -i and -annot in ocamlc
+- PR#5543: in Bigarray.map_file, try to avoid using lseek() when growing file
+- PR#5648: (probably fixed) test failures in tests/lib-threads
+- PR#5551: repeated calls to find_in_path degrade performance
+- PR#5552: Mac OS X: unrecognized gcc option "-no-cpp-precomp"
+- PR#5555: add Hashtbl.reset to resize the bucket table to its initial size
+- PR#5560: incompatible type for tuple pattern with -principal
+- PR#5575: Random states are not marshallable across architectures
+- PR#5579: camlp4: when a plugin is loaded in the toplevel,
+  Token.Filter.define_filter has no effect before the first syntax error
+- PR#5585: typo: "explicitely"
+- PR#5587: documentation: "allows to" is not correct English
+- PR#5593: remove C file when -output-obj fails
+- PR#5597: register names for instrtrace primitives in embedded bytecode
+- PR#5598: add backslash-space support in strings in ocamllex
+- PR#5603: wrong .file debug info generated by ocamlopt -g
+- PR#5604: fix permissions of files created by ocamlbuild itself
+- PR#5610: new unmarshaler (from PR#5318) fails to freshen object identifiers
+- PR#5614: add missing -linkall flag when compiling ocamldoc.opt
+- PR#5616: move ocamlbuild documentation to the reference manual
+- PR#5619: Uncaught CType.Unify exception in the compiler
+- PR#5620: invalid printing of type manifest (camlp4 revised syntax)
+- PR#5637: invalid printing of anonymous type parameters (camlp4 revised syntax)
+- PR#5643: issues with .cfi and .loc directives generated by ocamlopt -g
+- PR#5644: Stream.count broken when used with Sapp or Slazy nodes
+- PR#5647: Cannot use install_printer in debugger
+- PR#5651: printer for abstract data type (camlp4 revised syntax)
+- PR#5654: self pattern variable location tweak
+- PR#5655: ocamlbuild doesn't pass cflags when building C stubs
+- PR#5657: wrong error location for abbreviated record fields
+- PR#5659: ocamlmklib -L option breaks with MSVC
+- PR#5661: fixes for the test suite
+- PR#5668: Camlp4 produces invalid syntax for "let _ = ..."
+- PR#5671: initialization of compare_ext field in caml_final_custom_operations()
+- PR#5677: do not use "value" as identifier (genprintval.ml)
+- PR#5687: dynlink broken when used from "output-obj" main program (bytecode)
+- problem with printing of string literals in camlp4 (reported on caml-list)
+- emacs mode: colorization of comments and strings now works correctly
+- problem with forall and method (reported on caml-list on 2011-07-26)
+- crash when using OCAMLRUNPARAM=a=X with invalid X (reported in private)
+
+Feature wishes:
+- PR#352: new option "-stdin" to make ocaml read stdin as a script
+- PR#1164: better error message when mixing -a and .cmxa
+- PR#1284: documentation: remove restriction on mixed streams
+- PR#1496: allow configuring LIBDIR, BINDIR, and MANDIR relative to $(PREFIX)
+- PR#1835: add Digest.from_hex
+- PR#1898: toplevel: add option to suppress continuation prompts
+- PR#4278: configure: option to disable "graph" library
+- PR#4444: new String.trim function, removing leading and trailing whistespace
+- PR#4549: make Filename.dirname/basename POSIX compliant
+- PR#4830: add option -v to expunge.ml
+- PR#4898: new Sys.big_endian boolean for machine endianness
+- PR#4963, PR#5467: no extern "C" into ocaml C-stub headers
+- PR#5199: tests are run only for bytecode if either native support is missing,
+  or a non-empty value is set to "BYTECODE_ONLY" Makefile variable
+- PR#5215: marshalling of dynlinked closure
+- PR#5236: new '%revapply' primitive with the semantics 'revapply x f = f x',
+    and '%apply' with semantics 'apply f x = f x'.
+- PR#5255: natdynlink detection on powerpc, hurd, sparc
+- PR#5295: OS threads: problem with caml_c_thread_unregister()
+- PR#5297: compiler now checks existence of builtin primitives
+- PR#5329: (Windows) more efficient Unix.select if all fd's are sockets
+- PR#5357: warning for useless open statements
+- PR#5358: first class modules don't allow "with type" declarations for types
+  in sub-modules
+- PR#5385: configure: emit a warning when MACOSX_DEPLOYMENT_TARGET is set
+- PR#5396: ocamldep: add options -sort, -all, and -one-line
+- PR#5397: Filename.temp_dir_name should be mutable
+- PR#5403: give better error message when emacs is not found in PATH
+- PR#5411: new directive for the toplevel: #load_rec
+- PR#5420: Unix.openfile share mode (Windows)
+- PR#5421: Unix: do not leak fds in various open_proc* functions
+- PR#5434: implement Unix.times in win32unix (partially)
+- PR#5438: new warnings for unused declarations
+- PR#5439: upgrade config.guess and config.sub
+- PR#5445 and others: better printing of types with user-provided names
+- PR#5454: Digest.compare is missing and md5 doc update
+- PR#5455: .emacs instructions, add lines to recognize ocaml scripts
+- PR#5456: pa_macro: replace __LOCATION__ after macro expansion; add LOCATION_OF
+- PR#5461: bytecode: emit warning when linking two modules with the same name
+- PR#5478: ocamlopt assumes ar command exists
+- PR#5479: Num.num_of_string may raise an exception, not reflected in the
+  documentation.
+- PR#5501: increase IO_BUFFER_SIZE to 64KiB
+- PR#5532: improve error message when bytecode file is wrong
+- PR#5555: add function Hashtbl.reset to resize the bucket table to
+  its initial size.
+- PR#5586: increase UNIX_BUFFER_SIZE to 64KiB
+- PR#5597: register names for instrtrace primitives in embedded bytecode
+- PR#5599: Add warn() tag in ocamlbuild to control -w compiler switch
+- PR#5628: add #remove_directory and Topdirs.remove_directory to remove
+  a directory from the load path
+- PR#5636: in system threads library, issue with linking of pthread_atfork
+- PR#5666: C includes don't provide a revision number
+- ocamldebug: ability to inspect values that contain code pointers
+- ocamldebug: new 'environment' directive to set environment variables
+  for debuggee
+- configure: add -no-camlp4 option
+
+Shedding weight:
+* Removed the obsolete native-code generators for Alpha, HPPA, IA64 and MIPS.
+* The "DBM" library (interface with Unix DBM key-value stores) is no
+  longer part of this distribution.  It now lives its own life at
+  https://forge.ocamlcore.org/projects/camldbm/
+* The "OCamlWin" toplevel user interface for MS Windows is no longer
+  part of this distribution.  It now lives its own life at
+  https://forge.ocamlcore.org/projects/ocamltopwin/
+
+Other changes:
+- Copy VERSION file to library directory when installing.
+
+
+OCaml 3.12.1 (4 Jul 2011):
+--------------------------
+
+Bug fixes:
+- PR#4345, PR#4767: problems with camlp4 printing of float values
+- PR#4380: ocamlbuild should not use tput on windows
+- PR#4487, PR#5164: multiple 'module type of' are incompatible
+- PR#4552: ocamlbuild does not create symlinks when using '.itarget' file
+- PR#4673, PR#5144: camlp4 fails on object copy syntax
+- PR#4702: system threads: cleanup tick thread at exit
+- PR#4732: camlp4 rejects polymorphic variants using keywords from macros
+- PR#4778: Win32/MSVC port: rare syntax error in generated MASM assembly file
+- PR#4794, PR#4959: call annotations not generated by ocamlopt
+- PR#4820: revised syntax pretty printer crashes with 'Stack_overflow'
+- PR#4928: wrong printing of classes and class types by camlp4
+- PR#4939: camlp4 rejects patterns of the '?x:_' form
+- PR#4967: ocamlbuild passes wrong switches to ocamldep through menhir
+- PR#4972: mkcamlp4 does not include 'dynlink.cma'
+- PR#5039: ocamlbuild should use '-linkpkg' only when linking programs
+- PR#5066: ocamldoc: add -charset option used in html generator
+- PR#5069: fcntl() in caml_sys_open may block, do it within blocking section
+- PR#5071, PR#5129, PR#5134: inconsistencies between camlp4 and camlp4* binaries
+- PR#5080, PR#5104: regression in type constructor handling by camlp4
+- PR#5090: bad interaction between toplevel and camlp4
+- PR#5095: ocamlbuild ignores some tags when building bytecode objects
+- PR#5100: ocamlbuild always rebuilds a 'cmxs' file
+- PR#5103: build and install objinfo when building with ocamlbuild
+- PR#5109: crash when a parser calls a lexer that calls another parser
+- PR#5110: invalid module name when using optional argument
+- PR#5115: bytecode executables produced by msvc64 port crash on 32-bit versions
+- PR#5117: bigarray: wrong function name without HAS_MMAP; missing include
+- PR#5118: Camlp4o and integer literals
+- PR#5122: camlp4 rejects lowercase identifiers for module types
+- PR#5123: shift_right_big_int returns a wrong zero
+- PR#5124: substitution inside a signature leads to odd printing
+- PR#5128: typo in 'Camlp4ListComprehension' syntax extension
+- PR#5136: obsolete function used in emacs mode
+- PR#5145: ocamldoc: missing html escapes
+- PR#5146: problem with spaces in multi-line string constants
+- PR#5149: (partial) various documentation problems
+- PR#5156: rare compiler crash with objects
+- PR#5165: ocamlbuild does not pass '-thread' option to ocamlfind
+- PR#5167: camlp4r loops when printing package type
+- PR#5172: camlp4 support for 'module type of' construct
+- PR#5175: in bigarray accesses, make sure bigarray expr is evaluated only once
+- PR#5177: Gc.compact implies Gc.full_major
+- PR#5182: use bytecode version of ocamldoc to generate man pages
+- PR#5184: under Windows, alignment issue with bigarrays mapped from files
+- PR#5188: double-free corruption in bytecode system threads
+- PR#5192: mismatch between words and bytes in interpreting max_young_wosize
+- PR#5202: error in documentation of atan2
+- PR#5209: natdynlink incorrectly detected on BSD systems
+- PR#5213: ocamlbuild should pass '-rectypes' to ocamldoc when needed
+- PR#5217: ocamlfind plugin should add '-linkpkg' for toplevel
+- PR#5228: document the exceptions raised by functions in 'Filename'
+- PR#5229: typo in build script ('TAG_LINE' vs 'TAGLINE')
+- PR#5230: error in documentation of Scanf.Scanning.open_in
+- PR#5234: option -shared reverses order of -cclib options
+- PR#5237: incorrect .size directives generated for x86-32 and x86-64
+- PR#5244: String.compare uses polymorphic compare_val (regression of PR#4194)
+- PR#5248: regression introduced while fixing PR#5118
+- PR#5252: typo in docs
+- PR#5258: win32unix: unix fd leak under windows
+- PR#5269: (tentative fix) Wrong ext_ref entries in .annot files
+- PR#5272: caml.el doesn't recognize downto as a keyword
+- PR#5276: issue with ocamlc -pack and recursively-packed modules
+- PR#5280: alignment constraints incorrectly autodetected on MIPS 32
+- PR#5281: typo in error message
+- PR#5308: unused variables not detected in "include (struct .. end)"
+- camlp4 revised syntax printing bug in the toplevel (reported on caml-list)
+- configure: do not define _WIN32 under cygwin
+- Hardened generic comparison in the case where two custom blocks
+  are compared and have different sets of custom operations.
+- Hardened comparison between bigarrays in the case where the two
+  bigarrays have different kinds.
+- Fixed wrong autodetection of expm1() and log1p().
+- don't add .exe suffix when installing the ocamlmktop shell script
+- ocamldoc: minor fixes related to the display of ocamldoc options
+- fixed bug with huge values in OCAMLRUNPARAM
+- mismatch between declaration and definition of caml_major_collection_slice
+
+Feature wishes:
+- PR#4992: added '-ml-synonym' and '-mli-synonym' options to ocamldep
+- PR#5065: added '-ocamldoc' option to ocamlbuild
+- PR#5139: added possibility to add options to ocamlbuild
+- PR#5158: added access to current camlp4 parsers and printers
+- PR#5180: improved instruction selection for float operations on amd64
+- stdlib: added a 'usage_string' function to Arg
+- allow with constraints to add a type equation to a datatype definition
+- ocamldoc: allow to merge '@before' tags like other ones
+- ocamlbuild: allow dependency on file "_oasis"
+
+Other changes:
+- Changed default minor heap size from 32k to 256k words.
+- Added new operation 'compare_ext' to custom blocks, called when
+  comparing a custom block value with an unboxed integer.
+
+
+Objective Caml 3.12.0 (2 Aug 2010):
+-----------------------------------
+
+(Changes that can break existing programs are marked with a "*"  )
+
+Language features:
+- Shorthand notation for records: in expressions and patterns,
+    { lbl } stands for { lbl = lbl } and { M.lbl } for { M.lbl = lbl }
+- Record patterns of the form { lbl = pat; _ } to mark that not all
+  labels are listed, purposefully.  (See new warning below.)
+- Explicit naming of a generic type; in an expression
+  "fun ... (type t) ... -> e", the type t is considered abstract in its
+  scope (the arguments that follow it and the body of the function),
+  and then replaced by a fresh type variable. In particular, the type
+  t can be used in contexts where a type variable is not allowed
+  (e.g. for defining an exception in a local module).
+- Explicit polymorphic types and polymorphic recursion. In let
+  definitions, one can write an explicit polymorphic type just
+  immediately the function name; the polymorphism will be enforced,
+  and recursive calls may use the polymorphism.
+  The syntax is the same as for polymorphic methods:
+    "let [rec] <ident> : 'a1 ... 'an. <typexp> = ..."
+- First-class packages modules.
+  New kind of type expression, for packaged modules: (module PT).
+  New kind of expression, to pack a module as a first-class value:
+    (module MODEXPR : PT).
+  New kind of module expression, to unpack a first-class value as a module:
+    (val EXPR : PT).
+  PT is a package type of the form "S" or
+  "S with type t1 = ... and ... and type tn = ..." (S refers to a module type).
+- Local opening of modules in a subexpression.
+  Syntax: "let open M in e", or "M.(e)"
+- In class definitions, method and instance variable override can now
+  be made explicit, by writing "method!", "val!" or "inherit!" in place of
+  "method", "val" and "inherit". It is an error to override an
+  undefined member (or to use overriding inheritance when nothing get
+  overridden). Additionally, these constructs disactivate respectively
+  warnings 7 (method override, code 'M') and 13 (instance variable
+  override, code 'V'). Note that, by default, warning 7 is inactive
+  and warning 13 is active.
+- "Destructive" substitution in signatures.
+  By writing "<signature> with type t := <typeconstr>" and
+  "<signature> with module M := <module-path>" one replaces "t" and "M"
+  inside the signature, removing their respective fields. Among other
+  uses, this allows to merge two signatures containing identically
+  named fields.
+* While fixing PR#4824, also corrected a gaping hole in the type checker,
+  which allowed instantiating separately object parameters and instance
+  variables in an interface. This hole was here since the beginning of
+  ocaml, and as a result many programs using object inheritance in a non
+  trivial way will need to be corrected. You can look at lablgtk2 for an
+  example.
+
+Compilers and toplevel:
+- Warnings are now numbered and can be switched on and off individually.
+  The old system with letters referring to sets of warnings is still
+  supported.
+- New warnings:
+  + 9 (code 'R') to signal record patterns without "; _" where
+    some labels of the record type are not listed in the pattern.
+  + 28 when giving a wildcard argument to a constant constructor in
+    a pattern-matching.
+  + 29 when an end-of-line appears unescaped in a string constant.
+  + 30 when the same constructor or record field is defined twice in
+    mutually-recursive type definitions.
+* The semantics of warning 7 (code 'M', method override) have changed
+  (it now detects all overrides, not just repeated definitions inside
+  the same class body), and it is now inactive by default.
+- Better error report in case of unbound qualified identifier: if the module
+  is unbound this error is reported in the first place.
+- Added option '-strict-sequence' to force left hand part of sequence to have
+  type unit.
+- Added option '-no-app-funct' to turn applicative functors off.
+  This option can help working around mysterious type incompatibilities
+  caused by the incomplete comparison of applicative paths F(X).t.
+
+Native-code compiler:
+- AMD64: shorter and slightly more efficient code generated for
+  float comparisons.
+
+Standard library:
+- Format: new function ikfprintf analoguous to ifprintf with a continuation
+  argument.
+* PR#4210, #4245: stricter range checking in string->integer conversion
+  functions (int_of_string, Int32.of_string, Int64.of_string,
+  Nativeint.of_string).  The decimal string corresponding to
+  max_int + 1 is no longer accepted.
+- Scanf: to prevent confusion when mixing Scanf scanning functions and direct
+  low level input, value Scanf.stdin has been added.
+* Random: changed the algorithm to produce better randomness.  Now passes the
+  DieHard tests.
+- Map: implement functions from Set that make sense for Map.
+
+Other libraries:
+* Str: letters that constitute a word now include digits 0-9 and
+  underscore _.  This changes the interpretation of '\b' (word boundary)
+  in regexps, but is more consistent with other regexp libraries. (PR#4874).
+
+Ocamlbuild:
+- Add support for native dynlink.
+
+New tool:
+- ocamlobjinfo: displays various information, esp. dependencies, for
+  compiled OCaml files (.cmi, .cmo, .cma, .cmx, .cmxa, .cmxs, and bytecode
+  executables).  Extends and makes more official the old objinfo tool
+  that was installed by some OCaml packages.
+
+All tools:
+- PR#4857: add a -vnum option to display the version number and nothing else
+
+Bug Fixes:
+- PR#4012: Map.map and Map.mapi do not conform to specification
+- PR#4478: better error messages for type definition mismatches
+- PR#4683: labltk script uses fixed path on windows
+- PR#4742: finalisation function raising an exception blocks other finalisations
+- PR#4775: compiler crash on crazy types (temporary fix)
+- PR#4824: narrowing the type of class parameters with a module specification
+- PR#4862: relaxed value restriction and records
+- PR#4884: optional arguments do not work when Some is redefined
+- PR#4964: parenthesized names for infix functions in annot files
+- PR#4970: better error message for instance variables
+- PR#4975: spelling mistakes
+- PR#4988: contravariance lost with ocamlc -i
+- PR#5004: problem in Buffer.add_channel with very large lengths.
+- PR#5008: on AMD64/MSVC port, rare float corruption during GC.
+- PR#5018: wrong exception raised by Dynlink.loadfile.
+- PR#5057: fatal typing error with local module + functor + polymorphic variant
+- Wrong type for Obj.add_offset.
+- Small problem with representation of Int32, Int64, and Nativeint constants.
+- Use RTLD_LOCAL for native dynlink in private mode.
+
+Objective Caml 3.11.2 (20 Jan 2010):
+------------------------------------
+
+Bug fixes:
+- PR#4151: better documentation for min and max w.r.t. NaN
+- PR#4421: ocamlbuild uses wrong compiler for C files
+- PR#4710, PR#4720: ocamlbuild does not use properly configuration information
+- PR#4750: under some Windows installations, high start-up times for Unix lib
+- PR#4777: problem with scanf and CRLF
+- PR#4783: ocamlmklib problem under Windows
+- PR#4810: BSD problem with socket addresses, e.g. in Unix.getnameinfo
+- PR#4813: issue with parsing of float literals by the GNU assembler
+- PR#4816: problem with modules and private types
+- PR#4818: missed opportunity for type-based optimization of bigarray accesses
+- PR#4821: check for duplicate method names in classes
+- PR#4823: build problem on Mac OS X
+- PR#4836: spurious errors raised by Unix.single_write under Windows
+- PR#4841, PR#4860, PR#4930: problem with ocamlopt -output-obj under Mac OS X
+- PR#4847: C compiler error with ocamlc -output-obj under Win64
+- PR#4856: ocamlbuild uses ocamlrun to execute a native plugin
+- PR#4867, PR#4760: ocamlopt -shared fails on Mac OS X 64bit
+- PR#4873: ocamlbuild ignores "thread" tag when building a custom toplevel
+- PR#4890: ocamlbuild tries to use native plugin on bytecode-only arch
+- PR#4896: ocamlbuild should always pass -I to tools for external libraries
+- PR#4900: small bug triggering automatic compaction even if max_overhead = 1M
+- PR#4902: bug in %.0F printf format
+- PR#4910: problem with format concatenation
+- PR#4922: ocamlbuild recompiles too many files
+- PR#4923: missing \xff for scanf %S
+- PR#4933: functors not handling private types correctly
+- PR#4940: problem with end-of-line in DOS text mode, tentative fix
+- PR#4953: problem compiling bytecode interpreter on ARM in Thumb mode.
+- PR#4955: compiler crash when typing recursive type expression with constraint
+- Module Printf: the simple conversion %F (without width indication) was not
+           treated properly.
+- Makefile: problem with cygwin, flexdll, and symbolic links
+- Various build problems with ocamlbuild under Windows with msvc
+
+Feature wishes:
+- PR#9: (tentative implementation) make ocamldebug use #linenum annotations
+- PR#123, PR#4477: custom exception printers
+- PR#3456: Obj.double_field and Obj.set_double_field functions
+- PR#4003: destination directory can be given to Filename.[open_]temp_file
+- PR#4647: Buffer.blit function
+- PR#4685: access to Filename.dir_sep
+- PR#4703: support for debugging embedded applications
+- PR#4723: "clear_rules" function to empty the set of ocamlbuild rules
+- PR#4921: configure option to help cross-compilers
+
+Objective Caml 3.11.1 (12 Jun 2009):
+------------------------------------
+
+Bug fixes:
+- PR#4095: ocamldebug: strange behaviour of control-C
+- PR#4403: ocamldebug: improved handling of packed modules
+- PR#4650: Str.regexp_case_fold mis-handling complemented character sets [^a]
+- PR#4660: Scanf.format_from_string: handling of double quote
+- PR#4666: Unix.exec* failure in multithread programs under MacOS X and FreeBSD
+- PR#4667: debugger out of sync with dynlink changes
+- PR#4678: random "out of memory" error with systhreads
+- PR#4690: issue with dynamic loading under MacOS 10.5
+- PR#4692: wrong error message with options -i and -pack passed to ocamlc
+- PR#4699: in otherlibs/dbm, fixed construction of dlldbm.so.
+- PR#4704: error in caml_modify_generational_global_root()
+- PR#4708: (ocamldoc) improved printing of infix identifiers such as "lor".
+- PR#4722: typo in configure script
+- PR#4729: documented the fact that PF_INET6 is not available on all platforms
+- PR#4730: incorrect typing involving abbreviation "type 'a t = 'a"
+- PR#4731: incorrect quoting of arguments passed to the assembler on x86-64
+- PR#4735: Unix.LargeFile.fstat cannot report size over 32bits on Win32
+- PR#4740: guard against possible processor error in
+           {Int32,Int64,Nativeint}.{div,rem}
+- PR#4745: type inference wrongly produced non-generalizable type variables.
+- PR#4749: better pipe size for win32unix
+- PR#4756: printf: no error reported for wrong format '%_s'
+- PR#4758: scanf: handling of \<newline> by format '%S'
+- PR#4766: incorrect simplification of some type abbreviations.
+- PR#4768: printf: %F does not respect width and precision specifications
+- PR#4769: Format.bprintf fails to flush
+- PR#4775: fatal error Ctype.Unify during module type-checking (temporary fix)
+- PR#4776: bad interaction between exceptions and classes
+- PR#4780: labltk build problem under Windows.
+- PR#4790: under Windows, map ERROR_NO_DATA Win32 error to EPIPE Unix error.
+- PR#4792: bug in Big_int.big_int_of_int64 on 32-bit platforms.
+- PR#4796: ocamlyacc: missing NUL termination of string
+- PR#4804: bug in Big_int.int64_of_big_int on 32-bit platforms.
+- PR#4805: improving compatibility with the clang C compiler
+- PR#4809: issue with Unix.create_process under Win32
+- PR#4814: ocamlbrowser: crash when editing comments
+- PR#4816: module abbreviations remove 'private' type restrictions
+- PR#4817: Object type gives error "Unbound type parameter .."
+- Module Parsing: improved computation of locations when an ocamlyacc rule
+                  starts with an empty nonterminal
+- Type-checker: fixed wrong variance computation for private types
+- x86-32 code generator, MSVC port: wrong "fld" instruction generated.
+- ocamlbuild: incorrectly using the compile-time value of $OCAMLLIB
+- Makefile problem when configured with -no-shared-libs
+- ocamldoc: use dynamic loading in native code
+
+Other changes:
+- Improved wording of various error messages
+  (contributed by Jonathan Davies, Citrix).
+- Support for 64-bit mode in Solaris/x86 (PR#4670).
+
+
+Objective Caml 3.11.0 (03 Dec 2008):
+------------------------------------
+
+(Changes that can break existing programs are marked with a "*"  )
+
+Language features:
+- Addition of lazy patterns: "lazy <pat>" matches suspensions whose values,
+  after forcing, match the pattern <pat>.
+- Introduction of private abbreviation types "type t = private <type-expr>",
+  for abstracting the actual manifest type in type abbreviations.
+- Subtyping is now allowed between a private abbreviation and its definition,
+  and between a polymorphic method and its monomorphic instance.
+
+Compilers:
+- The file name for a compilation unit should correspond to a valid
+  identifier (Otherwise dynamic linking and other things can fail, and
+  a warning is emitted.)
+* Revised -output-obj: the output name must now be provided; its
+  extension must be one of .o/.obj, .so/.dll, or .c for the
+  bytecode compiler. The compilers can now produce a shared library
+  (with all the needed -ccopts/-ccobjs options) directly.
+- -dtypes renamed to -annot, records (in .annot files) which function calls
+  are tail calls.
+- All compiler error messages now include a file name and location, for
+  better interaction with Emacs' compilation mode.
+- Optimized compilation of "lazy e" when the argument "e" is
+  already evaluated.
+- Optimized compilation of equality tests with a variant constant constructor.
+- The -dllib options recorded in libraries are no longer ignored when
+  -use_runtime or -use_prims is used (unless -no_auto_link is
+  explicitly used).
+- Check that at most one of -pack, -a, -shared, -c, -output-obj is
+  given on the command line.
+- Optimized compilation of private types as regular manifest types
+  (e.g. abbreviation to float, float array or record types with only
+   float fields).
+
+Native-code compiler:
+- New port: Mac OS X / Intel in 64-bit mode (configure with -cc "gcc -m64").
+- A new option "-shared" to produce a plugin that can be dynamically
+  loaded with the native version of Dynlink.
+- A new option "-nodynlink" to enable optimizations valid only for code
+  that is never dynlinked (no-op except for AMD64).
+- More aggressive unboxing of floats and boxed integers.
+- Can select which assembler and asm options to use at configuration time.
+
+Run-time system:
+- New implementation of the page table describing the heap (two-level
+  array in 32 bits, sparse hashtable in 64 bits), fixes issues with address
+  space randomization on 64-bit OS (PR#4448).
+- New "generational" API for registering global memory roots with the GC,
+  enables faster scanning of global roots.
+  (The functions are caml_*_generational_global_root in <caml/memory.h>.)
+- New function "caml_raise_with_args" to raise an exception with several
+  arguments from C.
+- Changes in implementation of dynamic linking of C code:
+  under Win32, use Alain Frisch's flexdll implementation of the dlopen
+  API; under MacOSX, use dlopen API instead of MacOSX bundle API.
+- Programs may now choose a first-fit allocation policy instead of
+  the default next-fit.  First-fit reduces fragmentation but is
+  slightly slower in some cases.
+
+Standard library:
+- Parsing library: new function "set_trace" to programmatically turn
+  on or off the printing of a trace during parsing.
+- Printexc library: new functions "print_backtrace" and "get_backtrace"
+  to obtain a stack backtrace of the most recently raised exception.
+  New function "record_backtrace" to turn the exception backtrace mechanism
+  on or off from within a program.
+- Scanf library: fine-tuning of meta format implementation;
+  fscanf behaviour revisited: only one input buffer is allocated for any
+  given input channel;
+  the %n conversion does not count a lookahead character as read.
+
+Other libraries:
+- Dynlink: on some platforms, the Dynlink library is now available in
+  native code. The boolean Dynlink.is_native allows the program to
+  know whether it has been compiled in bytecode or in native code.
+- Bigarrays: added "unsafe_get" and "unsafe_set"
+  (non-bound-checking versions of "get" and "set").
+- Bigarrays: removed limitation "array dimension < 2^31".
+- Labltk: added support for TK 8.5.
+- Num: added conversions between big_int and int32, nativeint, int64.
+  More efficient implementation of Num.quo_num and Num.mod_num.
+- Threads: improved efficiency of mutex and condition variable operations;
+  improved interaction with Unix.fork (PR#4577).
+- Unix: added getsockopt_error returning type Unix.error.
+  Added support for TCP_NODELAY and IPV6_ONLY socket options.
+- Win32 Unix: "select" now supports all kinds of file descriptors.
+  Improved emulation of "lockf" (PR#4609).
+
+Tools:
+- ocamldebug now supported under Windows (MSVC and Mingw ports),
+  but without the replay feature.  (Contributed by Dmitry Bely
+  and Sylvain Le Gall at OCamlCore with support from Lexifi.)
+- ocamldoc: new option -no-module-constraint-filter to include functions
+  hidden by signature constraint in documentation.
+- ocamlmklib and ocamldep.opt now available under Windows ports.
+- ocamlmklib no longer supports the -implib option.
+- ocamlnat: an experimental native toplevel (not built by default).
+
+Camlp4:
+* programs linked with camlp4lib.cma now also need dynlink.cma.
+
+Bug fixes:
+- Major GC and heap compaction: fixed bug involving lazy values and
+  out-of-heap pointers.
+- PR#3915: updated most man pages.
+- PR#4261: type-checking of recursive modules
+- PR#4308: better stack backtraces for "spontaneous" exceptions such as
+  Stack_overflow, Out_of_memory, etc.
+- PR#4338: Str.global_substitute, Str.global_replace and the Str.*split*
+  functions are now tail-recursive.
+- PR#4503: fixed bug in classify_float on ARM.
+- PR#4512: type-checking of recursive modules
+- PR#4517: crash in ocamllex-generated lexers.
+- PR#4542: problem with return value of Unix.nice.
+- PR#4557: type-checking of recursive modules.
+- PR#4562: strange %n semantics in scanf.
+- PR#4564: add note "stack is not executable" to object files generated by
+  ocamlopt (Linux/x86, Linux/AMD64).
+- PR#4566: bug in Ratio.approx_ratio_fix and Num.approx_num_fix.
+- PR#4582: clarified the documentation of functions in the String module.
+- PR#4583: stack overflow in "ocamlopt -g" during closure conversion pass.
+- PR#4585: ocamldoc and "val virtual" declarations.
+- PR#4587: ocamldoc and escaped @ characters.
+- PR#4605: Buffer.add_substitute was sometime wrong when target string had
+           backslashes.
+- PR#4614: Inconsistent declaration of CamlCBCmd in LablTk library.
+
+
+Objective Caml 3.10.2 (29 Feb 2008):
+------------------------------------
+
+Bug fixes:
+- PR#1217 (partial) Typo in ocamldep man page
+- PR#3952 (partial) ocamlopt: allocation problems on ARM
+- PR#4339 (continued) ocamlopt: problems on HPPA
+- PR#4455 str.mli not installed under Windows
+- PR#4473 crash when accessing float array with polymorphic method
+- PR#4480 runtime would not compile without gcc extensions
+- PR#4481 wrong typing of exceptions with object arguments
+- PR#4490 typo in error message
+- Random crash on 32-bit when major_heap_increment >= 2^22
+- Big performance bug in Weak hashtables
+- Small bugs in the make-package-macosx script
+- Bug in typing of polymorphic variants (reported on caml-list)
+
+
+Objective Caml 3.10.1 (11 Jan 2008):
+------------------------------------
+
+Bug fixes:
+- PR#3830 small bugs in docs
+- PR#4053 compilers: improved compilation time for large variant types
+- PR#4174 ocamlopt: fixed ocamlopt -nopervasives
+- PR#4199 otherlibs: documented a small problem in Unix.utimes
+- PR#4280 camlp4: parsing of identifier (^)
+- PR#4281 camlp4: parsing of type constraint
+- PR#4285 runtime: cannot compile under AIX
+- PR#4286 ocamlbuild: cannot compile under AIX and SunOS
+- PR#4288 compilers: including a functor application with side effects
+- PR#4295 camlp4 toplevel: synchronization after an error
+- PR#4300 ocamlopt: crash with backtrace and illegal array access
+- PR#4302 camlp4: list comprehension parsing problem
+- PR#4304 ocamlbuild: handle -I correctly
+- PR#4305 stdlib: alignment of Arg.Symbol
+- PR#4307 camlp4: assertion failure
+- PR#4312 camlp4: accept "let _ : int = 1"
+- PR#4313 ocamlbuild: -log and missing directories
+- PR#4315 camlp4: constraints in classes
+- PR#4316 compilers: crash with recursive modules and Lazy
+- PR#4318 ocamldoc: installation problem with Cygwin (tentative fix)
+- PR#4322 ocamlopt: stack overflow under Windows
+- PR#4325 compilers: wrong error message for unused var
+- PR#4326 otherlibs: marshal Big_int on win64
+- PR#4327 ocamlbuild: make emacs look for .annot in _build directory
+- PR#4328 camlp4: stack overflow with nil nodes
+- PR#4331 camlp4: guards on fun expressions
+- PR#4332 camlp4: parsing of negative 32/64 bit numbers
+- PR#4336 compilers: unsafe recursive modules
+- PR#4337 (note) camlp4: invalid character escapes
+- PR#4339 ocamlopt: problems on HP-UX (tentative fix)
+- PR#4340 camlp4: wrong pretty-printing of optional arguments
+- PR#4348 ocamlopt: crash on Mac Intel
+- PR#4349 camlp4: bug in private type definitions
+- PR#4350 compilers: type errors with records and polymorphic variants
+- PR#4352 compilers: terminal recursion under Windows (tentative fix)
+- PR#4354 ocamlcp: mismatch with ocaml on polymorphic let
+- PR#4358 ocamlopt: float constants wrong on ARM
+- PR#4360 ocamldoc: string inside comment
+- PR#4365 toplevel: wrong pretty-printing of polymorphic variants
+- PR#4373 otherlibs: leaks in win32unix
+- PR#4374 otherlibs: threads module not initialized
+- PR#4375 configure: fails to build on bytecode-only architectures
+- PR#4377 runtime: finalisation of infix pointers
+- PR#4378 ocamlbuild: typo in plugin.ml
+- PR#4379 ocamlbuild: problem with plugins under Windows
+- PR#4382 compilers: typing of polymorphic record fields
+- PR#4383 compilers: including module with private type
+- PR#4385 stdlib: Int32/Int64.format are unsafe
+- PR#4386 otherlibs: wrong signal numbers with Unix.sigprocmask etc.
+- PR#4387 ocamlbuild: build directory not used properly
+- PR#4392 ocamldep: optional argument of class
+- PR#4394 otherlibs: infinite loops in Str
+- PR#4397 otherlibs: wrong size for flag arrays in win32unix
+- PR#4402 ocamldebug: doesn't work with -rectypes
+- PR#4410 ocamlbuild: problem with plugin and -build
+- PR#4411 otherlibs: crash with Unix.access under Windows
+- PR#4412 stdlib: marshalling broken on 64 bit architectures
+- PR#4413 ocamlopt: crash on AMD64 with out-of-bound access and reraise
+- PR#4417 camlp4: pretty-printing of unary minus
+- PR#4419 camlp4: problem with constraint in type class
+- PR#4426 compilers: problem with optional labels
+- PR#4427 camlp4: wrong pretty-printing of lists of functions
+- PR#4433 ocamlopt: fails to build on MacOSX 10.5
+- PR#4435 compilers: crash with objects
+- PR#4439 fails to build on MacOSX 10.5
+- PR#4441 crash when build on sparc64 linux
+- PR#4442 stdlib: crash with weak pointers
+- PR#4446 configure: fails to detect X11 on MacOSX 10.5
+- PR#4448 runtime: huge page table on 64-bit architectures
+- PR#4450 compilers: stack overflow with recursive modules
+- PR#4470 compilers: type-checking of recursive modules too restrictive
+- PR#4472 configure: autodetection of libX11.so on Fedora x86_64
+- printf: removed (partially implemented) positional specifications
+- polymorphic < and <= comparisons: some C compiler optimizations
+  were causing incorrect results when arguments are incomparable
+
+New features:
+- made configure script work on PlayStation 3
+- ARM port: brought up-to-date for Debian 4.0 (Etch)
+- many other small changes and bugfixes in camlp4, ocamlbuild, labltk,
+  emacs files
+
+
+Objective Caml 3.10.0 (18 May 2007):
+------------------------------------
+
+(Changes that can break existing programs are marked with a "*"  )
+
+Language features:
+- Added virtual instance variables in classes "val virtual v : t"
+* Changed the behaviour of instance variable overriding; the new
+  definition replaces the old one, rather than creating a new
+  variable.
+
+New tools:
+- ocamlbuild: compilation manager for OCaml applications and libraries.
+  See draft documentation at http://gallium.inria.fr/~pouillar/
+* Camlp4: heavily revised implementation, new API.
+
+New ports:
+- MacOS X PowerPC 64 bits.
+- MS Windows 64 bits (x64) using the Microsoft PSDK toolchain.
+- MS Windows 32 bits using the Visual Studio 2005 toolchain.
+
+Compilers:
+- Faster type-checking of functor applications.
+- Referencing an interface compiled with -rectypes from a module
+    not compiled with -rectypes is now an error.
+- Revised the "fragile matching" warning.
+
+Native-code compiler:
+- Print a stack backtrace on an uncaught exception.
+  (Compile and link with ocamlopt -g; execute with OCAMLRUNPARAM=b.)
+  Supported on Intel/AMD in 32 and 64 bits, PPC in 32 and 64 bits.
+- Stack overflow detection on MS Windows 32 bits (courtesy O. Andrieu).
+- Stack overflow detection on MacOS X PPC and Intel.
+- Intel/AMD 64 bits: generate position-independent code by default.
+- Fixed bug involving -for-pack and missing .cmx files (PR#4124).
+- Fixed bug causing duplication of literals  (PR#4152).
+
+Run-time system:
+- C/Caml interface functions take "char const *" arguments
+  instead of "char *" when appropriate.
+- Faster string comparisons (fast case if strings are ==).
+
+Standard library:
+- Refined typing of format strings (type format6).
+- Printf, Format: new function ifprintf that consumes its arguments
+    and prints nothing (useful to print conditionally).
+- Scanf:
+    new function format_from_string to convert a string to a format string;
+    new %r conversion to accomodate user defined scanners.
+- Filename: improved Win32 implementation of Filename.quote.
+- List: List.nth now tail-recursive.
+- Sys: added Sys.is_directory.  Some functions (e.g. Sys.command) that
+    could incorrectly raise Sys_io_blocked now raise Sys_error as intended.
+- String and Char: the function ``escaped'' now escapes all the characters
+    especially handled by the compiler's lexer (PR#4220).
+
+Other libraries:
+- Bigarray: mmap_file takes an optional argument specifying
+    the start position of the data in the mapped file.
+- Dynlink: now defines only two modules, Dynlink and Dynlinkaux (internal),
+    reducing risks of name conflicts with user modules.
+- Labltk under Win32: now uses Tcl/Tk 8.4 instead of 8.3 by default.
+- VM threads: improved performance of I/O operations (less polling).
+- Unix: new function Unix.isatty.
+- Unix emulation under Win32:
+    fixed incorrect error reporting in several functions (PR#4097);
+    better handling of channels opened on sockets (PR#4098);
+    fixed GC bug in Unix.system (PR#4112).
+
+Documentation generator (OCamldoc):
+- correctly handle '?' in value names (PR#4215)
+- new option -hide-warnings not to print ocamldoc warnings
+
+Lexer generator (ocamllex): improved error reporting.
+
+License: fixed a typo in the "special exception" to the LGPL.
+
+
+Objective Caml 3.09.3 (15 Sep 2006):
+------------------------------------
+
+Bug fixes:
+- ocamldoc: -using modtype constraint to filter module elements displayed
+    in doc PR#4016
+- ocamldoc: error in merging of top dependencies of modules PR#4007
+- ocamldoc: -dot-colors has no effect PR#3981
+- ocamdloc: missing crossref in text from intro files PR#4066
+- compilers: segfault with recursive modules PR#4008
+- compilers: infinite loop when compiling objects PR#4018
+- compilers: bad error message when signature mismatch PR#4001
+- compilers: infinite loop with -rectypes PR#3999
+- compilers: contravariance bug in private rows
+- compilers: unsafe cast with polymorphic exception PR#4002
+- native compiler: bad assembly code generated for AMD64 PR#4067
+- native compiler: stack alignment problems on MacOSX/i386 PR#4036
+- stdlib: crash in marshalling PR#4030
+- stdlib: crash when closing a channel twice PR#4039
+- stdlib: memory leak in Sys.readdir PR#4093
+- C interface: better definition of CAMLreturn PR#4068
+- otherlibs/unix: crash in gethostbyname PR#3043
+- tools: subtle problem with unset in makefile PR#4048
+- camlp4: install pa_o_fast.o PR#3812
+- camlp4: install more modules PR#3689
+
+New features:
+- ocamldoc: name resolution in cross-referencing {!name}: if name is not
+    found, then it is searched in the parent module/class, and in the parent
+    of the parent, and so on until it is found.
+- ocamldoc: new option -short-functors to use a short form to display
+    functors in html generator PR#4017
+- ocamlprof: added "-version" option
+
+
+
+Objective Caml 3.09.2 (14 Apr 2006):
+------------------------------------
+
+Bug fixes:
+- Makefile: problem with "make world.opt" PR#3954
+- compilers: problem compiling several modules with one command line PR#3979
+- compilers,ocamldoc: error message that Emacs cannot parse
+- compilers: crash when printing type error PR#3968
+- compilers: -dtypes wrong for monomorphic type variables PR#3894
+- compilers: wrong warning on optional arguments PR#3980
+- compilers: crash when wrong use of type constructor in let rec PR#3976
+- compilers: better wording of "statement never returns" warning PR#3889
+- runtime: inefficiency of signal handling PR#3990
+- runtime: crashes with I/O in multithread programs PR#3906
+- camlp4: empty file name in error messages PR#3886
+- camlp4: stack overflow PR#3948
+- otherlibs/labltk: ocamlbrowser ignores its command line options PR#3961
+- otherlibs/unix: Unix.times wrong under Mac OS X PR#3960
+- otherlibs/unix: wrong doc for execvp and execvpe PR#3973
+- otherlibs/win32unix: random crash in Unix.stat PR#3998
+- stdlib: update_mod not found under Windows PR#3847
+- stdlib: Filename.dirname/basename wrong on Win32 PR#3933
+- stdlib: incomplete documentation of Pervasives.abs PR#3967
+- stdlib: Printf bugs PR#3902, PR#3955
+- tools/checkstack.c: missing include
+- yacc: crash when given argument "-" PR#3956
+
+New features:
+- ported to MacOS X on Intel PR#3985
+- configure: added support for GNU Hurd PR#3991
+
+Objective Caml 3.09.1 (4 Jan 2006):
+-----------------------------------
+
+Bug fixes:
+- compilers: raise not_found with -principal PR#3855
+- compilers: assert failure in typeclass.cml PR#3856
+- compilers: assert failure in typing/ctype.ml PR#3909
+- compilers: fatal error exception Ctype.Unify PR#3918
+- compilers: spurious warning Y in objects PR#3868
+- compilers: spurious warning Z on loop index PR#3907
+- compilers: error message that emacs cannot parse
+- ocamlopt: problems with -for-pack/-pack PR#3825, PR#3826, PR#3919
+- ocamlopt: can't produce shared libraries on x86_64 PR#3869, PR#3924
+- ocamlopt: float alignment problem on SPARC PR#3944
+- ocamlopt: can't compile on MIPS PR#3936
+- runtime: missing dependence for ld.conf
+- runtime: missing dependence for .depend.nt PR#3880
+- runtime: memory leak in caml_register_named_value PR#3940
+- runtime: crash in Marshal.to_buffer PR#3879
+- stdlib: Sys.time giving wrong results on Mac OS X PR#3850
+- stdlib: Weak.get_copy causing random crashes in rare cases
+- stdlib, debugger, labltk: use TMPDIR if set PR#3895
+- stdlib: scanf bug on int32 and nativeint PR#3932
+- camlp4: mkcamlp4 option parsing problem PR#3941
+- camlp4: bug in pretty-printing of lazy/assert/new
+- camlp4: update the unmaintained makefile for _loc name
+- ocamldoc: several fixes see ocamldoc/Changes.txt
+- otherlibs/str: bug in long sequences of alternatives PR#3783
+- otherlibs/systhreads: deadlock in Windows PR#3910
+- tools: update dumpobj to handle new event format PR#3873
+- toplevel: activate warning Y in toplevel PR#3832
+
+New features:
+- otherlibs/labltk: browser uses menu bars instead of menu buttons
+
+Objective Caml 3.09.0 (27 Oct 2006):
+------------------------------------
+
+(Changes that can break existing programs are marked with a "*"  )
+
+Language features:
+- Introduction of private row types, for abstracting the row in object
+  and variant types.
+
+Type checking:
+- Polymorphic variants with at most one constructor [< `A of t] are no
+  longer systematically promoted to the exact type [`A of t]. This was
+  more confusing than useful, and created problems with private row
+  types.
+
+Both compilers:
+- Added warnings 'Y' and 'Z' for local variables that are bound but
+  never used.
+- Added warning for some uses non-returning functions (e.g. raise), when they
+  are passed extra arguments, or followed by extra statements.
+- Pattern matching: more prudent compilation in case of guards; fixed PR#3780.
+- Compilation of classes: reduction in size of generated code.
+- Compilation of "module rec" definitions: fixed a bad interaction with
+  structure coercion (to a more restrictive signature).
+
+Native-code compiler (ocamlopt):
+* Revised implementation of the -pack option (packing of several compilation
+  units into one).  The .cmx files that are to be packed with
+  "ocamlopt -pack -o P.cmx" must be compiled with "ocamlopt -for-pack P".
+  In exchange for this additional constraint, ocamlopt -pack is now
+  available on all platforms (no need for binutils).
+* Fixed wrong evaluation order for arguments to certain inlined functions.
+- Modified code generation for "let rec ... and ..." to reduce compilation
+  time (which was quadratic in the number of mutually-recursive functions).
+- x86 port: support tail-calls for functions with up to 21 arguments.
+- AMD64 port, Linux: recover from system stack overflow.
+- Sparc port: more portable handling of out-of-bound conditions
+  on systems other than Solaris.
+
+Standard library:
+- Pervasives: faster implementation of close_in, close_out.
+  set_binary_mode_{out,in} now working correctly under Cygwin.
+- Printf: better handling of partial applications of the printf functions.
+- Scanf: new function sscanf_format to read a format from a
+  string. The type of the resulting format is dynamically checked and
+  should be the type of the template format which is the second argument.
+- Scanf: no more spurious lookahead attempt when the end of file condition
+  is set and a correct token has already been read and could be returned.
+
+Other libraries:
+- System threads library: added Thread.sigmask; fixed race condition
+  in signal handling.
+- Bigarray library: fixed bug in Array3.of_array.
+- Unix library: use canonical signal numbers in results of Unix.wait*;
+  hardened Unix.establish_server against EINTR errors.
+
+Run-time system:
+- Support platforms where sizeof(void *) = 8 and sizeof(long) = 4.
+- Improved and cleaned up implementation of signal handling.
+
+Replay debugger:
+- Improved handling of locations in source code.
+
+OCamldoc:
+- extensible {foo } syntax
+- user can give .txt files on the command line, containing ocamldoc formatted
+  text, to be able to include bigger texts out of source files
+- -o option is now used by the html generator to indicate the prefix
+  of generated index files (to avoid conflict when a Index module exists
+  on case-insensitive file systems).
+
+Miscellaneous:
+- Configuration information is installed in `ocamlc -where`/Makefile.config
+  and can be used by client Makefiles or shell scripts.
+
+Objective Caml 3.08.4 (11 Aug 2005):
+------------------------------------
+
+New features:
+- configure: find X11 config in some 64-bit Linux distribs
+- ocamldoc: (**/**) can be canceled with another (**/**) PR#3665
+- graphics: added resize_window
+- graphics: check for invalid arguments to drawing primitives PR#3595
+- ocamlbrowser: use windows subsystem on mingw
+
+Bug fixes:
+- ocamlopt: code generation problem on AMD64 PR#3640
+- wrong code generated for some classes PR#3576
+- fatal error when compiling some OO code PR#3745
+- problem with comparison on constant constructors PR#3608
+- camlp4: cryptic error message PR#3592
+- camlp4: line numbers in multi-line antiquotations PR#3549
+- camlp4: problem with make depend
+- camlp4: parse error with :> PR#3561
+- camlp4: ident conversion problem with val/contents/contents__
+- camlp4: several small parsing problems PR#3688
+- ocamldebug: handling of spaces in executable file name PR#3736
+- emacs-mode: problem when caml-types-buffer is deleted by user PR#3704
+- ocamldoc: extra backslash in ocamldoc man page PR#3687
+- ocamldoc: improvements to HTML display PR#3698
+- ocamldoc: escaping of @ in info files
+- ocamldoc: escaping of . and \ in man pages PR#3686
+- ocamldoc: better error reporting of misplaced comments
+- graphics: fixed .depend file PR#3558
+- graphics: segfault with threads and graphics PR#3651
+- nums: several bugs: PR#3718, PR#3719, others
+- nums: inline asm problems with gcc 4.0 PR#3604, PR#3637
+- threads: problem with backtrace
+- unix: problem with getaddrinfo PR#3565
+- stdlib: documentation of Int32.rem and Int64.rem PR#3573
+- stdlib: documentation of List.rev_map2 PR#3685
+- stdlib: wrong order in Map.fold PR#3607
+- stdlib: documentation of maximum float array length PR#3714
+- better detection of cycles when using -rectypes
+- missing case of module equality PR#3738
+- better error messages for unbound type variables
+- stack overflow while printing type error message PR#3705
+- assert failure when typing some classes PR#3638
+- bug in type_approx
+- better error messages related to type variance checking
+- yacc: avoid name capture for idents of the Parsing module
+
+
+Objective Caml 3.08.3 (24 Mar 2005):
+------------------------------------
+
+New features:
+- support for ocamlopt -pack under Mac OS X (PR#2634, PR#3320)
+- ignore unknown warning options for forward and backward compatibility
+- runtime: export caml_compare_unordered (PR#3479)
+- camlp4: install argl.* files (PR#3439)
+- ocamldoc: add -man-section option
+- labltk: add the "solid" relief option (PR#3343)
+
+Bug fixes:
+- typing: fix unsoundness in type declaration variance inference.
+    Type parameters which are constrained must now have an explicit variant
+    annotation, otherwise they are invariant. This is not backward
+    compatible, so this might break code which either uses subtyping or
+    uses the relaxed value restriction (i.e. was not typable before 3.07)
+- typing: erroneous partial match warning for polymorphic variants (PR#3424)
+- runtime: handle the case of an empty command line (PR#3409, PR#3444)
+- stdlib: make Sys.executable_name an absolute path in native code (PR#3303)
+- runtime: fix memory leak in finalise.c
+- runtime: auto-trigger compaction even if gc is called manually (PR#3392)
+- stdlib: fix segfault in Obj.dup on zero-sized values (PR#3406)
+- camlp4: correct parsing of the $ identifier (PR#3310, PR#3469)
+- windows (MS tools): use link /lib instead of lib (PR#3333)
+- windows (MS tools): change default install destination
+- autoconf: better checking of SSE2 instructions (PR#3329, PR#3330)
+- graphics: make close_graph close the X display as well as the window (PR#3312)
+- num: fix big_int_of_string (empty string) (PR#3483)
+- num: fix big bug on 64-bit architecture (PR#3299)
+- str: better documentation of string_match and string_partial_match (PR#3395)
+- unix: fix file descriptor leak in Unix.accept (PR#3423)
+- unix: miscellaneous clean-ups
+- unix: fix documentation of Unix.tm (PR#3341)
+- graphics: fix problem when allocating lots of images under Windows (PR#3433)
+- compiler: fix error message with -pack when .cmi is missing (PR#3028)
+- cygwin: fix problem with compilation of camlheader (PR#3485)
+- stdlib: Filename.basename doesn't return an empty string any more (PR#3451)
+- stdlib: better documentation of Open_excl flag (PR#3450)
+- ocamlcp: accept -thread option (PR#3511)
+- ocamldep: handle spaces in file names (PR#3370)
+- compiler: remove spurious warning in pattern-matching on variants (PR#3424)
+- windows: better handling of InterpreterPath registry entry (PR#3334, PR#3432)
+
+
+Objective Caml 3.08.2 (22 Nov 2004):
+------------------------------------
+
+Bug fixes:
+- runtime: memory leak when unmarshalling big data structures (PR#3247)
+- camlp4: incorrect line numbers in errors (PR#3188)
+- emacs: xemacs-specific code, wrong call to "sit-for"
+- ocamldoc: "Lexing: empty token" (PR#3173)
+- unix: problem with close_process_* (PR#3191)
+- unix: possible coredumps (PR#3252)
+- stdlib: wrong order in Set.fold (PR#3161)
+- ocamlcp: array out of bounds in profiled programs (PR#3267)
+- yacc: problem with polymorphic variant types for grammar entries (PR#3033)
+
+Misc:
+- export <caml/printexc.h> for caml_format_exception (PR#3080)
+- clean up caml_search_exe_in_path (maybe PR#3079)
+- camlp4: new function "make_lexer" for new-style locations
+- unix: added missing #includes (PR#3088)
+
+
+Objective Caml 3.08.1 (19 Aug 2004):
+------------------------------------
+
+Licence:
+- The emacs files are now under GPL
+- Slightly relaxed some conditions of the QPL
+
+Bug fixes:
+- ld.conf now generated at compile-time instead of install-time
+- fixed -pack on Windows XP (PR#2935)
+- fixed Obj.tag (PR#2946)
+- added support for multiple dlopen in Darwin
+- run ranlib when installing camlp4 libraries (PR#2944)
+- link camlp4opt with -linkall (PR#2949)
+- camlp4 parsing of patterns now conforms to normal parsing (PR#3015)
+- install camlp4 *.cmx files (PR#2955)
+- fixed handling of linefeed in string constants in camlp4 (PR#3074)
+- ocamldoc: fixed display of class parameters in HTML and LaTeX (PR#2994)
+- ocamldoc: fixed display of link to class page in html (PR#2994)
+- Windows toplevel GUI: assorted fixes (including PR#2932)
+
+Misc:
+- added -v option to ocamllex
+- ocamldoc: new -intf and -impl options supported (PR#3036)
+
+Objective Caml 3.08.0 (13 Jul 2004):
+------------------------------------
+
+(Changes that can break existing programs are marked with a "*"  )
+
+Language features:
+- Support for immediate objects, i.e. objects defined without going
+  through a class.  (Syntax is "object <fields and methods> end".)
+
+Type-checking:
+- When typing record construction and record patterns, can omit
+  the module qualification on all labels except one.  I.e.
+  { M.l1 = ...; l2 = ... } is interpreted as { M.l1 = ...; M.l2 = ... }
+
+Both compilers:
+- More compact compilation of classes.
+- Much more efficient handling of class definitions inside functors
+  or local modules.
+- Simpler representation for method tables. Objects can now be marshaled
+  between identical programs with the flag Marshal.Closures.
+- Improved error messages for objects and variants.
+- Improved printing of inferred module signatures (toplevel and ocamlc -i).
+  Recursion between type, class, class type and module definitions is now
+  correctly printed.
+- The -pack option now accepts compiled interfaces (.cmi files) in addition
+  to compiled implementations (.cmo or .cmx).
+* A compile-time error is signaled if an integer literal exceeds the
+  range of representable integers.
+- Fixed code generation error for "module rec" definitions.
+- The combination of options -c -o sets the name of the generated
+  .cmi / .cmo / .cmx files.
+
+Bytecode compiler:
+- Option -output-obj is now compatible with Dynlink and
+  with embedded toplevels.
+
+Native-code compiler:
+- Division and modulus by zero correctly raise exception Division_by_zero
+  (instead of causing a hardware trap).
+- Improved compilation time for the register allocation phase.
+- The float constant -0.0 was incorrectly treated as +0.0 on some processors.
+- AMD64: fixed bugs in asm glue code for GC invocation and exception raising
+  from C.
+- IA64: fixed incorrect code generated for "expr mod 1".
+- PowerPC: minor performance tweaks for the G4 and G5 processors.
+
+Standard library:
+* Revised handling of NaN floats in polymorphic comparisons.
+  The polymorphic boolean-valued comparisons (=, <, >, etc) now treat
+  NaN as uncomparable, as specified by the IEEE standard.
+  The 3-valued comparison (compare) treats NaN as equal to itself
+  and smaller than all other floats.  As a consequence, x == y
+  no longer implies x = y but still implies compare x y = 0.
+* String-to-integer conversions now fail if the result overflows
+  the range of integers representable in the result type.
+* All array and string access functions now raise
+  Invalid_argument("index out of bounds") when a bounds check fails.
+  In earlier releases, different exceptions were raised
+  in bytecode and native-code.
+- Module Buffer: new functions Buffer.sub, Buffer.nth
+- Module Int32: new functions Int32.bits_of_float, Int32.float_of_bits.
+- Module Map: new functions is_empty, compare, equal.
+- Module Set: new function split.
+* Module Gc: in-order finalisation, new function finalise_release.
+
+Other libraries:
+- The Num library: complete reimplementation of the C/asm lowest
+  layer to work around potential licensing problems.
+  Improved speed on the PowerPC and AMD64 architectures.
+- The Graphics library: improved event handling under MS Windows.
+- The Str library: fixed bug in "split" functions with nullable regexps.
+- The Unix library:
+   . Added Unix.single_write.
+   . Added support for IPv6.
+   . Bug fixes in Unix.closedir.
+   . Allow thread switching on Unix.lockf.
+
+Runtime System:
+* Name space depollution: all global C identifiers are now prefixed
+  with "caml" to avoid name clashes with other libraries.  This
+  includes the "external" primitives of the standard runtime.
+
+Ports:
+- Windows ports: many improvements in the OCamlWin toplevel application
+  (history, save inputs to file, etc).  Contributed by Christopher A. Watford.
+- Native-code compilation supported for HPPA/Linux. Contributed by Guy Martin.
+- Removed support for MacOS9.  Mac OS 9 is obsolete and the port was not
+  updated since 3.05.
+- Removed ocamlopt support for HPPA/Nextstep and Power/AIX.
+
+Ocamllex:
+- #line directives in the input file are now accepted.
+- Added character set concatenation operator "cset1 # cset2".
+
+Ocamlyacc:
+- #line directives in the input file are now accepted.
+
+Camlp4:
+* Support for new-style locations (line numbers, not just character numbers).
+- See camlp4/CHANGES and camlp4/ICHANGES for more info.
+
+
+Objective Caml 3.07 (29 Sep 2003):
+----------------------------------
+
+Language features:
+- Experimental support for recursive module definitions
+      module rec A : SIGA = StructA and B : SIGB = StructB and ...
+- Support for "private types", or more exactly concrete data types
+  with private constructors or labels.  These data types can be
+  de-structured normally in pattern matchings, but values of these
+  types cannot be constructed directly outside of their defining module.
+- Added integer literals of types int32, nativeint, int64
+  (written with an 'l', 'n' or 'L' suffix respectively).
+
+Type-checking:
+- Allow polymorphic generalization of covariant parts of expansive
+  expressions.  For instance, if f: unit -> 'a list, "let x = f ()"
+  gives "x" the generalized type forall 'a. 'a list, instead of '_a list
+  as before.
+- The typing of polymorphic variants in pattern matching has changed.
+  It is intended to be more regular, sticking to the principle of "closing
+  only the variants which would be otherwise incomplete". Two potential
+  consequences: (1) some types may be left open which were closed before,
+  and the resulting type might not match the interface anymore (expected to
+  be rare); (2) in some cases an incomplete match may be generated.
+- Lots of bug fixes in the handling of polymorphism and recursion inside
+  types.
+- Added a new "-dtypes" option to ocamlc/ocamlopt, and an emacs extension
+  "emacs/caml-types.el".  The compiler option saves inferred type information
+  to file *.annot, and the emacs extension allows the user to look at the
+  type of any subexpression in the source file.  Works even in the case
+  of a type error (all the types computed up to the error are available).
+  This new feature is also supported by ocamlbrowser.
+- Disable "method is overridden" warning when the method was explicitly
+  redefined as virtual beforehand (i.e. not through inheritance). Typing
+  and semantics are unchanged.
+
+Both compilers:
+- Added option "-dtypes" to dump detailed type information to a file.
+- The "-i" option no longer generates compiled files, it only prints
+  the inferred types.
+- The sources for the module named "Mod" can be placed either in Mod.ml or
+  in mod.ml.
+- Compilation of "let rec" on non-functional values: tightened some checks,
+  relaxed some other checks.
+- Fixed wrong code that was generated for "for i = a to max_int"
+  or "for i = a downto min_int".
+- An explicit interface Mod.mli can now be provided for the module obtained
+  by ocamlc -pack -o Mod.cmo ... or ocamlopt -pack -o Mod.cmx ...
+- Revised internal handling of source code locations, now handles
+  preprocessed code better.
+- Pattern-matching bug on float literals fixed.
+- Minor improvements on pattern-matching over variants.
+- More efficient compilation of string comparisons and the "compare" function.
+- More compact code generated for arrays of constants.
+- Fixed GC bug with mutable record fields of type "exn".
+- Added warning "E" for "fragile patterns": pattern matchings that would
+  not be flagged as partial if new constructors were added to the data type.
+
+Bytecode compiler:
+- Added option -vmthread to select the threads library with VM-level
+  scheduling.  The -thread option now selects the system threads library.
+
+Native-code compiler:
+- New port: AMD64 (Opteron).
+- Fixed instruction selection bug on expressions of the kind (raise Exn)(arg).
+- Several bug fixes in ocamlopt -pack (tracking of imported modules,
+  command line too long).
+- Signal handling bug fixed.
+- x86 port:
+    Added -ffast-math option to use inline trigo and log functions.
+    Small performance tweaks for the Pentium 4.
+    Fixed illegal "imul" instruction generated by reloading phase.
+- Sparc port:
+    Enhanced code generation for Sparc V8 (option -march=v8) and
+    Sparc V9 (option -march=v9).
+    Profiling support added for Solaris.
+- PowerPC port:
+    Keep stack 16-aligned for compatibility with C calling conventions.
+
+Toplevel interactive system:
+- Tightened interface consistency checks between .cmi files, .cm[oa] files
+  loaded by #load, and the running toplevel.
+- #trace on mutually-recursive functions was broken, works again.
+- Look for .ocamlinit file in home directory in addition to the current dir.
+
+Standard library:
+- Match_failure and Assert_failure exceptions now report
+  (file, line, column), instead of (file, starting char, ending char).
+- float_of_string, int_of_string: some ill-formed input strings were not
+    rejected.
+- Added format concatenation, string_of_format, format_of_string.
+- Module Arg: added new option handlers Set_string, Set_int, Set_float,
+    Symbol, Tuple.
+- Module Format: tag handling is now turned off by default,
+    use [Format.set_tags true] to activate.
+- Modules Lexing and Parsing: added better handling of positions
+    in source file.  Added function Lexing.flush_input.
+- Module Scanf: %n and %N formats to count characters / items read so far;
+    assorted bug fixes, %! to match end of input. New ``_'' special
+    flag to skip reresulting value.
+- Module Format: tags are not activated by default.
+- Modules Set and Map: fixed bugs causing trees to become unbalanced.
+- Module Printf: less restrictive typing of kprintf.
+- Module Random: better seeding; functions to generate random int32, int64,
+    nativeint; added support for explicit state management.
+- Module Sys: added Sys.readdir for reading the contents of a directory.
+
+Runtime system:
+- output_value/input_value: fixed bug with large blocks (>= 4 Mwords)
+  produced on a 64-bit platform and incorrectly read back on a 32-bit
+  platform.
+- Fixed memory compaction bug involving input_value.
+- Added MacOS X support for dynamic linking of C libraries.
+- Improved stack backtraces on uncaught exceptions.
+- Fixed float alignment problem on Sparc V9 with gcc 3.2.
+
+Other libraries:
+- Dynlink:
+    By default, dynamically-loaded code now has access to all
+      modules defined by the program; new functions Dynlink.allow_only
+      and Dynlink.prohibit implement access control.
+    Fixed Dynlink problem with files generated with ocamlc -pack.
+    Protect against references to modules not yet fully initialized.
+- LablTK/CamlTK: added support for TCL/TK 8.4.
+- Str: reimplemented regexp matching engine, now less buggy, faster,
+    and LGPL instead of GPL.
+- Graphics: fixed draw_rect and fill_rect bug under X11.
+- System threads and bytecode threads libraries can be both installed.
+- System threads: better implementation of Thread.exit.
+- Bytecode threads: fixed two library initialization bugs.
+- Unix: make Unix.openfile blocking to account for named pipes;
+  GC bug in Unix.*stat fixed; fixed problem with Unix.dup2 on Windows.
+
+Ocamllex:
+- Can name parts of the matched input text, e.g.
+    "0" (['0'-'7']+ as s) { ... s ... }
+
+Ocamldebug:
+- Handle programs that run for more than 2^30 steps.
+
+Emacs mode:
+- Added file caml-types.el to interactively display the type information
+  saved by option -dtypes.
+
+Win32 ports:
+- Cygwin port: recognize \ as directory separator in addition to /
+- MSVC port: ocamlopt -pack works provided GNU binutils are installed.
+- Graphics library: fixed bug in Graphics.blit_image; improved event handling.
+
+OCamldoc:
+- new ty_code field for types, to keep code of a type (with option -keep-code)
+- new ex_code field for types, to keep code of an exception
+    (with option -keep-code)
+- some fixes in html generation
+- don't overwrite existing style.css file when generating HTML
+- create the ocamldoc.sty file when generating LaTeX (if nonexistent)
+- man pages are now installed in man/man3 rather than man/mano
+- fix: empty [] in generated HTML indexes
+
+
+Objective Caml 3.06 (20 Aug 2002):
+----------------------------------
+
+Type-checking:
+- Apply value restriction to polymorphic record fields.
+
+Run-time system:
+- Fixed GC bug affecting lazy values.
+
+Both compilers:
+- Added option "-version" to print just the version number.
+- Fixed wrong dependencies in .cmi generated with the -pack option.
+
+Native-code compiler:
+- Fixed wrong return value for inline bigarray assignments.
+
+Libraries:
+- Unix.getsockopt: make sure result is a valid boolean.
+
+Tools:
+- ocamlbrowser: improved error reporting; small Win32 fixes.
+
+Windows ports:
+- Fixed two problems with the Mingw port under Cygwin 1.3.
+
+
+Objective Caml 3.05 (29 Jul 2002):
+----------------------------------
+
+Language features:
+- Support for polymorphic methods and record fields.
+- Allows _ separators in integer and float literals, e.g. 1_000_000.
+
+Type-checker:
+- New flag -principal to enforce principality of type inference.
+- Fixed subtle typing bug with higher-order functors.
+- Fixed several complexity problems; changed (again) the  behaviour of
+  simple coercions.
+- Fixed various bugs with objects and polymorphic variants.
+- Improved some error messages.
+
+Both compilers:
+- Added option "-pack" to assemble several compilation units as one unit
+  having the given units as sub-modules.
+- More precise detection of unused sub-patterns in "or" patterns.
+- Warnings for ill-formed \ escapes in string and character literals.
+- Protect against spaces and other special characters in directory names.
+- Added interface consistency check when building a .cma or .cmxa library.
+- Minor reduction in code size for class initialization code.
+- Added option "-nostdlib" to ignore standard library entirely.
+
+Bytecode compiler:
+- Fixed issue with ocamlc.opt and dynamic linking.
+
+Native-code compiler:
+- Added link-time check for multiply-defined module names.
+- Fixed GC bug related to constant constructors of polymorphic variant types.
+- Fixed compilation bug for top-level "include" statements.
+- PowerPC port: work around limited range for relative branches,
+  thus removing assembler failures on large functions.
+- IA64 port: fixed code generation bug for 3-way constructor matching.
+
+Toplevel interactive system:
+- Can load object files given on command line before starting up.
+- ocamlmktop: minimized possibility of name clashes with user-provided modules.
+
+Run-time system:
+- Minor garbage collector no longer recursive.
+- Better support for lazy data in the garbage collector.
+- Fixed issues with the heap compactor.
+- Fixed issues with finalized Caml values.
+- The type "int64" is now supported on all platforms: we use software
+  emulation if the C compiler doesn't support 64-bit integers.
+- Support for float formats that are neither big-endian nor little-endian
+  (one known example: the ARM).
+- Fixed bug in callback*_exn functions in the exception-catching case.
+- Work around gcc 2.96 bug on RedHat 7.2 and Mandrake 8.0, 8.1 among others.
+- Stub DLLs now installed in subdir stublibs/ of standard library dir.
+
+Standard library:
+- Protect against integer overflow in sub-string and sub-array bound checks.
+- New module Complex implementing arithmetic over complex numbers.
+- New module Scanf implementing format-based scanning a la scanf() in C.
+- Module Arg: added alternate entry point Arg.parse_argv.
+- Modules Char, Int32, Int64, Nativeint, String: added type "t" and function
+  "compare" so that these modules can be used directly with e.g. Set.Make.
+- Module Digest: fixed issue with Digest.file on large files (>= 1Gb);
+    added Digest.to_hex.
+- Module Filename: added Filename.open_temp_file to atomically create and
+    open the temp file; improved security of Filename.temp_file.
+- Module Genlex: allow _ as first character of an identifier.
+- Module Lazy: more efficient implementation.
+- Module Lexing: improved performances for very large tokens.
+- Module List: faster implementation of sorting functions.
+- Module Printf:
+    added %S and %C formats (quoted, escaped strings and characters);
+    added kprintf (calls user-specified continuation on formatted string).
+- Module Queue: faster implementation (courtesy of François Pottier).
+- Module Random: added Random.bool.
+- Module Stack: added Stack.is_empty.
+- Module Pervasives:
+    added sub-module LargeFile to support files larger than 1Gb
+      (file offsets are int64 rather than int);
+    opening in "append" mode automatically sets "write" mode;
+    files are now opened in close-on-exec mode;
+    string_of_float distinguishes its output from a plain integer;
+    faster implementation of input_line for long lines.
+- Module Sys:
+     added Sys.ocaml_version containing the OCaml version number;
+     added Sys.executable_name containing the (exact) path of the
+       file being executable;
+     Sys.argv.(0) is now unchanged w.r.t. what was provided as 0-th argument
+       by the shell.
+- Module Weak: added weak hash tables.
+
+Other libraries:
+- Bigarray:
+    support for bigarrays of complex numbers;
+    added functions Genarray.dims,
+      {Genarray,Array1,Array2,Array3}.{kind,layout}.
+- Dynlink: fixed bug with loading of mixed-mode Caml/C libraries.
+- LablTK:
+    now supports also the CamlTK API (no labels);
+    support for Activate and Deactivate events;
+    support for virtual events;
+    added UTF conversion;
+    export the tcl interpreter as caml value, to avoid DLL dependencies.
+- Unix:
+    added sub-module LargeFile to support files larger than 1Gb
+      (file offsets are int64 rather than int);
+    added POSIX opening flags (O_NOCTTY, O_*SYNC);
+    use reentrant functions for gethostbyname and gethostbyaddr when available;
+    fixed bug in Unix.close_process and Unix.close_process_full;
+    removed some overhead in Unix.select.
+
+Tools:
+- ocamldoc (the documentation generator) is now part of the distribution.
+- Debugger: now supports the option -I +dir.
+- ocamllex: supports the same identifiers as ocamlc; warns for
+  bad \ escapes in strings and characters.
+- ocamlbrowser:
+    recenter the module boxes when showing a cross-reference;
+    include the current directory in the ocaml path.
+
+Windows port:
+- Can now compile with Mingw (the GNU compilers without the Cygwin
+  runtime library) in addition to MSVC.
+- Toplevel GUI: wrong filenames were given to #use and #load commands;
+  read_line() was buggy for short lines (2 characters or less).
+- OCamlBrowser: now fully functional.
+- Graphics library: fixed several bugs in event handling.
+- Threads library: fixed preemption bug.
+- Unix library: better handling of the underlying differences between
+  sockets and regular file descriptors;
+  added Unix.lockf and a better Unix.rename (thanks to Tracy Camp).
+- LablTk library: fixed a bug in Fileinput
+
+
+Objective Caml 3.04 (13 Dec 2001):
+----------------------------------
+
+Type-checker:
+- Allowed coercing self to the type of the current class, avoiding
+  an obscure error message about "Self type cannot be unified..."
+
+Both compilers:
+- Use OCAMLLIB environment variable to find standard library, falls
+  back on CAMLLIB if not defined.
+- Report out-of-range ASCII escapes in character or string literals
+  such as "\256".
+
+Byte-code compiler:
+- The -use-runtime and -make-runtime flags are back by popular demand
+  (same behavior as in 3.02).
+- Dynamic loading (of the C part of mixed Caml/C libraries): arrange that
+  linking in -custom mode uses the static libraries for the C parts,
+  not the shared libraries, for maximal robustness and compatibility with
+  3.02.
+
+Native-code compiler:
+- Fixed bug in link-time consistency checking.
+
+Tools:
+- ocamlyacc: added parser debugging support (set OCAMLRUNPARAM=p to get
+  a trace of the pushdown automaton actions).
+- ocamlcp: was broken in 3.03 (Sys_error), fixed.
+
+Run-time system:
+- More work on dynamic loading of the C part of mixed Caml/C libraries.
+- On uncaught exception, flush output channels before printing exception
+  message and backtrace.
+- Corrected several errors in exception backtraces.
+
+Standard library:
+- Pervasives: integer division and modulus are now fully specified
+  on negative arguments (with round-towards-zero semantics).
+- Pervasives.float_of_string: now raises Failure on ill-formed input.
+- Pervasives: added useful float constants max_float, min_float, epsilon_float.
+- printf functions in Printf and Format: added % formats for int32, nativeint,
+  int64; "*" in width and precision specifications now supported
+  (contributed by Thorsten Ohl).
+- Added Hashtbl.copy, Stack.copy.
+- Hashtbl: revised resizing strategy to avoid quadratic behavior
+  on Hashtbl.add.
+- New module MoreLabels providing labelized versions of modules
+  Hashtbl, Map and Set.
+- Pervasives.output_value and Marshal.to_* : improved hashing strategy
+  for internal data structures, avoid excessive slowness on
+  quasi-linearly-allocated inputs.
+
+Other libraries:
+- Num: fixed bug in big integer exponentiation (Big_int.power_*).
+
+Windows port:
+- New GUI for interactive toplevel (Jacob Navia).
+- The Graphics library is now available for stand-alone executables
+  (Jacob Navia).
+- Unix library: improved reporting of system error codes.
+- Fixed error in "globbing" of * and ? patterns on command line.
+
+Emacs mode: small fixes; special color highlighting for ocamldoc comments.
+
+License: added special exception to the LGPL'ed code (libraries and
+  runtime system) allowing unrestricted linking, whether static or dynamic.
+
+
+Objective Caml 3.03 ALPHA (12 Oct 2001):
+----------------------------------------
+
+Language:
+- Removed built-in syntactic sugar for streams and stream patterns
+  [< ... >], now supported via CamlP4, which is now included in the
+  distribution.
+- Switched the default behaviour to labels mode (labels are compulsory),
+  but allows omitting labels when a function application is complete.
+  -nolabels mode is available but deprecated for programming.
+  (See also scrapelabels and addlabels tools below.)
+- Removed all labels in the standard libraries, except labltk.
+  Labelized versions are kept for ArrayLabels, ListLabels, StringLabels
+  and UnixLabels. "open StdLabels" gives access to the first three.
+- Extended polymorphic variant type syntax, allowing union types and
+  row abbreviations for both sub- and super-types. #t deprecated in types.
+- See the Upgrading file for how to adapt to all the changes above.
+
+Type-checker:
+- Fixed obscure bug in module typing causing the type-checker to loop
+  on signatures of the form
+        module type M
+        module A: sig module type T = sig module T: M end end
+        module B: A.T
+- Improved efficiency of module type-checking via lazy computation of
+  certain signature summary information.
+- An empty polymorphic variant type is now an error.
+
+Both compilers:
+- Fixed wrong code generated for "struct include M ... end" when M
+  contains one or several "external" declarations.
+
+Byte-code compiler:
+- Protect against VM stack overflow caused by module initialization code
+  with many local variables.
+- Support for dynamic loading of the C part of mixed Caml/C libraries.
+- Removed the -use-runtime and -make-runtime flags, obsoleted by dynamic
+  loading of C libraries.
+
+Native-code compiler:
+- Attempt to recover gracefully from system stack overflow.  Currently
+  works on x86 under Linux and BSD.
+- Alpha: work around "as" bug in Tru64 5.1.
+
+Toplevel environment:
+- Revised printing of inferred types and evaluation results
+  so that an external printer (e.g. Camlp4's) can be hooked in.
+
+Tools:
+- The CamlP4 pre-processor-pretty-printer is now included in the standard
+  distribution.
+- New tool ocamlmklib to help build mixed Caml/C libraries.
+- New tool scrapelabels and addlabels, to either remove (non-optional)
+  labels in interfaces, or automatically add them in the definitions.
+  They provide easy transition from classic mode ocaml 3.02 sources,
+  depending on whether you want to keep labels or not.
+- ocamldep: added -pp option to handle preprocessed source files.
+
+Run-time system:
+- Support for dynamic loading of the C part of mixed Caml/C libraries.
+  Currently works under Linux, FreeBSD, Windows, Tru64, Solaris and Irix.
+- Implemented registration of global C roots with a skip list,
+  runs much faster when there are many global C roots.
+- Autoconfiguration script: fixed wrong detection of Mac OS X; problem
+  with the Sparc, gcc 3.0, and float alignment fixed.
+
+Standard library:
+- Added Pervasives.flush_all to flush all opened output channels.
+
+Other libraries:
+- All libraries revised to allow dynamic loading of the C part.
+- Graphics under X Windows: revised event handling, should no longer lose
+    mouse events between two calls to wait_next_event(); wait_next_event()
+    now interruptible by signals.
+- Bigarrays: fixed bug in marshaling of big arrays.
+
+Windows port:
+- Fixed broken Unix.{get,set}sockopt*
+
+
+
+Objective Caml 3.02 (30 Jul 2001):
+----------------------------------
+
+Both compilers:
+- Fixed embarrassing bug in pattern-matching compilation
+  (affected or-patterns containing variable bindings).
+- More optimizations in pattern-matching compilation.
+
+Byte-code compiler:
+- Protect against VM stack overflow caused by functions with many local
+  variables.
+
+Native-code compiler:
+- Removed re-sharing of string literals, causes too many surprises with
+  in-place string modifications.
+- Corrected wrong compilation of toplevel "include" statements.
+- Fixed bug in runtime function "callbackN_exn".
+- Signal handlers receive the conventional signal number as argument
+  instead of the system signal number (same behavior as with the
+  bytecode compiler).
+- ARM port: fixed issue with immediate operand overflow in large functions.
+
+Toplevel environment:
+- User-definer printers (for #install_printer) now receive as first argument
+  the pretty-printer formatter where to print their second argument.
+  Old printers (with only one argument) still supported for backward
+  compatibility.
+
+Standard library:
+- Module Hashtbl: added Hashtbl.fold.
+
+Other libraries:
+- Dynlink: better error reporting in add_interfaces for missing .cmi files.
+- Graphics: added more drawing functions (multiple points, polygons,
+    multiple lines, splines).
+- Bytecode threads: the module Unix is now thread-safe, ThreadUnix is
+    deprecated.  Unix.exec* now resets standard descriptors to blocking mode.
+- Native threads: fixed a context-switch-during-GC problem causing
+    certain C runtime functions to fail, most notably input_value.
+- Unix.inet_addr_of_string: call inet_aton() when available so as to
+    handle correctly the address 255.255.255.255.
+- Unix: added more getsockopt and setsockopt functions to get/set
+    options that have values other than booleans.
+- Num: added documentation for the Big_int module.
+
+Tools:
+- ocamldep: fixed wrong dependency issue with nested modules.
+
+Run-time system:
+- Removed floating-point error at start-up on some non-IEEE platforms
+  (e.g. FreeBSD prior to 4.0R).
+- Stack backtrace mechanism now works for threads that terminate on
+  an uncaught exception.
+
+Auto-configuration:
+- Updated config.guess and config.sub scripts, should recognize a greater
+  number of recent platform.
+
+Windows port:
+- Fixed broken Unix.waitpid.  Unix.file_descr can now be compared or hashed.
+- Toplevel application: issue with spaces in name of stdlib directory fixed.
+
+MacOS 9 port:
+- Removed the last traces of support for 68k
+
+
+Objective Caml 3.01 (09 Mar 2001):
+----------------------------------
+
+New language features:
+- Variables are allowed in "or" patterns, e.g.
+     match l with [t] | [_;t] -> ... t ...
+- "include <structure expression>" to re-export all components of a
+  structure inside another structure.
+- Variance annotation on parameters of type declarations, e.g.
+    type (+'a,-'b,'c) t (covariant in 'a, contravariant in 'b, invariant in 'c)
+
+New ports:
+- Intel IA64/Itanium under Linux (including the native-code compiler).
+- Cygwin under MS Windows.  This port is an alternative to the earlier
+  Windows port of OCaml, which relied on MS compilers; the Cygwin
+  Windows port does not need MS Visual C++ nor MASM, runs faster
+  in bytecode, and has a better implementation of the Unix library,
+  but currently lacks threads and COM component support.
+
+Type-checking:
+- Relaxed "monomorphic restriction" on type constructors in a
+  mutually-recursive type definition, e.g. the following is again allowed
+    type u = C of int t | D of string t and 'a t = ...
+- Fixed name-capture bug in "include SIG" and "SIG with ..." constructs.
+- Improved implicit subtypes built by (... :> ty), closer to intuition.
+- Several bug fixes in type-checking of variants.
+- Typing of polymorphic variants is more restrictive:
+   do not allow conjunctive types inside the same pattern matching.
+   a type has either an upper bound, or all its tags are in the lower bound.
+  This may break some programs (this breaks lablgl-0.94).
+
+Both compilers:
+- Revised compilation of pattern matching.
+- Option -I +<subdir> to search a subdirectory <subdir> of the standard
+  library directory (i.e. write "ocamlc -I +labltk" instead of
+  "ocamlc -I /usr/local/lib/ocaml/labltk").
+- Option -warn-error to turn warnings into errors.
+- Option -where to print the location of the standard library directory.
+- Assertions are now type-checked even if the -noassert option is given,
+  thus -noassert can no longe change the types of modules.
+
+Bytecode compiler and bytecode interpreter:
+- Print stack backtrace when a program aborts due to an uncaught exception
+  (requires compilation with -g and running with ocamlrun -b or
+   OCAMLRUNPARAM="b=1").
+
+Native-code compiler:
+- Better unboxing optimizations on the int32, int64, and nativeint types.
+- Tail recursion preserved for functions having more parameters than
+  available registers (but tail calls to other functions are still
+  turned off if parameters do not fit entirely in registers).
+- Fixed name-capture bug in function inlining.
+- Improved spilling/reloading strategy for conditionals.
+- IA32, Alpha: better alignment of branch targets.
+- Removed spurious dependency on the -lcurses library.
+
+Toplevel environment:
+- Revised handling of top-level value definitions, allows reclaimation
+  of definitions that are shadowed by later definitions with the same names.
+  (E.g. "let x = <big list>;; let x = 1;;" allows <big list> to be reclaimed.)
+- Revised the tracing facility so that for standard library functions,
+  only calls from user code are traced, not calls from the system.
+- Added a "*" prompt when within a comment.
+
+Runtime system:
+- Fixed portability issue on bcopy() vs memmove(), affecting Linux RedHat 7.0
+  in particular.
+- Structural comparisons (=, <>, <, <=, >, >=, compare) reimplemented
+  so as to avoid overflowing the C stack.
+- Input/output functions: arrange so that reads and writes on closed
+  in_channel or out_channel raise Sys_error immediately.
+
+Standard library:
+- Module Gc: changed some counters to float in order to avoid overflow;
+    added alarms
+- Module Hashtbl: added Hashtbl.replace.
+- Module Int64: added bits_of_float, float_of_bits (access to IEEE 754
+    representation of floats).
+- Module List:  List.partition now tail-rec;
+    improved memory behavior of List.stable_sort.
+- Module Nativeint: added Nativeint.size (number of bits in a nativeint).
+- Module Obj: fixed incorrect resizing of float arrays in Obj.resize.
+- Module Pervasives: added float constants "infinity", "neg_infinity", "nan";
+    added a "classify_float" function to test a float for NaN, infinity, etc.
+- Pervasives.input_value: fixed bug affecting shared custom objects.
+- Pervasives.output_value: fixed size bug affecting "int64" values.
+- Pervasives.int_of_string, {Int32,Int64,Nativeint}.of_string:
+  fixed bug causing bad digits to be accepted without error.
+- Module Random: added get_state and set_state to checkpoint the generator.
+- Module Sys: signal handling functions are passed the system-independent
+  signal number rather than the raw system signal number whenever possible.
+- Module Weak: added Weak.get_copy.
+
+Other libraries:
+- Bigarray: added Bigarray.reshape to take a view of the elements of a
+  bigarray with different dimensions or number of dimensions;
+  fixed bug causing "get" operations to be unavailable in custom
+  toplevels including Bigarray.
+- Dynlink: raise an error instead of crashing when the loaded module
+  refers to the not-yet-initialized module performing a dynlink operation.
+- Bytecode threads: added a thread-safe version of the Marshal module;
+    fixed a rare GC bug in the thread scheduler.
+- POSIX threads: fixed compilation problem with threads.cmxa.
+- Both thread libraries: better tail-recursion in Event.sync.
+- Num library: fixed bug in square roots (Nat.sqrt_nat, Big_int.sqrt_big_int).
+
+Tools:
+- ocamldep: fixed missing dependencies on labels of record patterns and
+    record construction operations
+
+Win32 port:
+- Unix.waitpid now implements the WNOHANG option.
+
+Mac OS ports:
+- Mac OS X public beta is supported.
+- Int64.format works on Mac OS 8/9.
+
+
+Objective Caml 3.00 (25 Apr 2000):
+----------------------------------
+
+Language:
+- OCaml/OLabl merger:
+  * Support for labeled and optional arguments for functions and classes.
+  * Support for variant types (sum types compared by structure).
+  See tutorial (chapter 2 of the OCaml manual) for more information.
+- Syntactic change: "?" in stream error handlers changed to "??".
+- Added exception renaming in structures (exception E = F).
+- (OCaml 2.99/OLabl users only) Label syntax changed to preserve
+  backward compatibility with 2.0x (labeled function application
+  is f ~lbl:arg instead of f lbl:arg).  A tool is provided to help
+  convert labelized programs to OCaml 3.00.
+
+Both compilers:
+- Option -labels to select commuting label mode (labels are mandatory,
+  but labeled arguments can be passed in a different order than in
+  the definition of the function; in default mode, labels may be omitted,
+  but argument reordering is only allowed for optional arguments).
+- Libraries (.cma and .cmxa files) now "remember" C libraries given
+  at library construction time, and add them back at link time.
+  Allows linking with e.g. just unix.cma instead of
+  unix.cma -custom -cclib -lunix
+- Revised printing of error messages, now use Format.fprintf; no visible
+  difference for users, but could facilitate internationalization later.
+- Fixed bug in unboxing of records containing only floats.
+- Fixed typing bug involving applicative functors as components of modules.
+- Better error message for inconsistencies between compiled interfaces.
+
+Bytecode compiler:
+- New "modular" format for bytecode executables; no visible differences
+  for users, but will facilitate further extensions later.
+- Fixed problems in signal handling.
+
+Native-code compiler:
+- Profiling support on x86 under FreeBSD
+- Open-coding and unboxing optimizations for the new integer types
+  int32, int64, nativeint, and for bigarrays.
+- Fixed instruction selection bug with "raise" appearing in arguments
+  of strict operators, e.g. "1 + raise E".
+- Better error message when linking incomplete/incorrectly ordered set
+  of .cmx files.
+- Optimized scanning of global roots during GC, can reduce total running
+  time by up to 8% on GC-intensive programs.
+
+Interactive toplevel:
+- Better printing of exceptions, including arguments, when possible.
+- Fixed rare GC bug occurring during interpretation of scripts.
+- Added consistency checks between interfaces and implementations
+  during #load.
+
+Run-time system:
+- Added support for "custom" heap blocks (heap blocks carrying
+  C functions for finalization, comparison, hashing, serialization
+  and deserialization).
+- Support for finalisation functions written in Caml.
+
+Standard library:
+- New modules Int32, Int64, Nativeint for 32-bit, 64-bit and
+  platform-native integers
+- Module Array: added Array.sort, Array.stable_sort.
+- Module Gc: added Gc.finalise to attach Caml finalisation functions to
+  arbitrary heap-allocated data.
+- Module Hashtbl: do not bomb when resizing very large table.
+- Module Lazy: raise Lazy.Undefined when a lazy evaluation needs itself.
+- Module List: added List.sort, List.stable_sort; fixed bug in List.rev_map2.
+- Module Map: added mapi (iteration with key and data).
+- Module Set: added iterators for_all, exists, filter, partition.
+- Module Sort: still here but deprecated in favor of new sorting functions
+  in Array and List.
+- Module Stack: added Stack.top
+- Module String: fixed boundary condition on String.rindex_from
+- Added labels on function arguments where appropriate.
+
+New libraries and tools:
+- ocamlbrowser: graphical browser for OCaml sources and compiled interfaces,
+  supports cross-referencing, editing, running the toplevel.
+- LablTK: GUI toolkit based on TK, using labeled and optional arguments,
+  easier to use than CamlTK.
+- Bigarray: large, multi-dimensional numerical arrays, facilitate
+  interfacing with C/Fortran numerical code, efficient support for
+  advanced array operations such as slicing and memory-mapping of files.
+
+Other libraries:
+- Bytecode threads: timer-based preemption was broken, works back again;
+  fixed bug in Pervasives.input_line; exported Thread.yield.
+- System threads: several GC / reentrancy bugs fixed in buffered I/O
+  and Unix I/O; revised Thread.join implementation for strict POSIX
+  conformance; exported Thread.yield.
+- Graphics: added support for double buffering; added, current_x, current_y,
+  rmoveto, rlineto, and draw_rect.
+- Num: fixed bug in Num.float_of_num.
+- Str: worked around potential symbol conflicts with C standard library.
+- Dbm: fixed bug with Dbm.iter on empty database.
+
+New or updated ports:
+- Alpha/Digital Unix: lifted 256M limitation on total memory space
+  induced by -taso
+- Port to AIX 4.3 on PowerPC
+- Port to HPUX 10 on HPPA
+- Deprecated 680x0 / SunOS port
+
+Macintosh port:
+- Implemented the Unix and Thread libraries.
+- The toplevel application does not work on 68k Macintoshes; maybe
+  later if there's a demand.
+- Added a new tool, ocamlmkappli, to build an application from a
+  program written in O'Caml.
+
+
+Objective Caml 2.04 (26 Nov 1999):
+----------------------------------
+
+- C interface: corrected inconsistent change in the CAMLparam* macros.
+- Fixed internal error in ocamlc -g.
+- Fixed type-checking of "S with ...", where S is a module type name
+  abbreviating another module type name.
+- ocamldep: fixed stdout/stderr mismatch after failing on one file.
+- Random.self_init more random.
+- Windows port:
+  - Toplevel application: fixed spurious crash on exit.
+  - Native-code compiler: fixed bug in assembling certain
+    floating-point constants (masm doesn't grok 2e5, wants 2.0e5).
+
+Objective Caml 2.03 (19 Nov 1999):
+----------------------------------
+
+New ports:
+- Ported to BeOS / Intel x86 (bytecode and native-code).
+- BSD / Intel x86 port now supports both a.out and ELF binary formats.
+- Added support for {Net,Open}BSD / Alpha.
+- Revamped Rhapsody port, now works on MacOS X server.
+
+Syntax:
+- Warning for "(*)" and "*)" outside comment.
+- Removed "#line LINENO", too ambiguous with a method invocation;
+  the equivalent "# LINENO" is still supported.
+
+Typing:
+- When an incomplete pattern-matching is detected, report also a
+  value or value template that is not covered by the cases of
+  the pattern-matching.
+- Several bugs in class type matching and in type error reporting fixed.
+- Added an option -rectypes to support general recursive types,
+  not just those involving object types.
+
+Bytecode compiler:
+- Minor cleanups in the bytecode emitter.
+- Do not remove "let x = y" bindings in -g mode; makes it easier to
+  debug the code.
+
+Native-code compiler:
+- Fixed bug in grouping of allocations performed in the same basic block.
+- Fixed bug in constant propagation involving expressions containing
+  side-effects.
+- Fixed incorrect code generation for "for" loops whose upper bound is
+  a reference assigned inside the loop.
+- MIPS code generator: work around a bug in the IRIX 6 assembler.
+
+Toplevel:
+- Fixed incorrect redirection of standard formatter to stderr
+  while executing toplevel scripts.
+
+Standard library:
+- Added List.rev_map, List.rev_map2.
+- Documentation of List functions now says which functions are
+  tail-rec, and how much stack space is needed for non-tailrec functions.
+- Wrong type for Printf.bprintf fixed.
+- Fixed weird behavior of Printf.sprintf and Printf.bprintf in case of
+  partial applications.
+- Added Random.self_init, which initializes the PRNG from the system date.
+- Sort.array: serious bugs fixed.
+- Stream.count: fixed incorrect behavior with ocamlopt.
+
+Run-time system and external interface:
+- Fixed weird behavior of signal handlers w.r.t. signal masks and exceptions
+  raised from the signal handler.
+- Fixed bug in the callback*_exn() functions.
+
+Debugger:
+- Fixed wrong printing of float record fields and elements of float arrays.
+- Supports identifiers starting with '_'.
+
+Profiler:
+- Handles .mli files, so ocamlcp can be used to replace ocamlc (e.g. in a
+  makefile).
+- Now works on programs that use stream expressions and stream parsers.
+
+Other libraries:
+- Graphics: under X11, treat all mouse buttons equally; fixed problem
+  with current font reverting to the default font when the graphics
+  window is resized.
+- Str: fixed reentrancy bugs in Str.replace and Str.full_split.
+- Bytecode threads: set standard I/O descriptors to non-blocking mode.
+- OS threads: revised implementation of Thread.wait_signal.
+- All threads: added Event.wrap_abort, Event.choose [].
+- Unix.localtime, Unix.gmtime: check for errors.
+- Unix.create_process: now supports arbitrary redirections of std descriptors.
+- Added Unix.open_process_full.
+- Implemented Unix.chmod under Windows.
+- Big_int.square_big_int now gives the proper sign to its result.
+
+Others:
+- ocamldep: don't stop at first error, skip to next file.
+- Emacs mode: updated with Garrigue and Zimmerman's snapshot of 1999/10/18.
+- configure script: added -prefix option.
+- Windows toplevel application: fixed problem with graphics library
+  not loading properly.
+
+
+Objective Caml 2.02 (04 Mar 1999):
+----------------------------------
+
+* Type system:
+  - Check that all components of a signature have unique names.
+  - Fixed bug in signature matching involving a type component and
+    a module component, both sharing an abstract type.
+  - Bug involving recursive classes constrained by a class type fixed.
+  - Fixed bugs in printing class types and in printing unification errors.
+
+* Compilation:
+  - Changed compilation scheme for "{r with lbl = e}" when r has many fields
+    so as to avoid code size explosion.
+
+* Native-code compiler:
+  - Better constant propagation in boolean expressions and in conditionals.
+  - Removal of unused arguments during function inlining.
+  - Eliminated redundant tagging/untagging in bit shifts.
+  - Static allocation of closures for functions without free variables,
+    reduces the size of initialization code.
+  - Revised compilation scheme for definitions at top level of compilation
+    units, so that top level functions have no free variables.
+  - Coalesced multiple allocations of heap blocks inside one expression
+    (e.g. x :: y :: z allocates the two conses in one step).
+  - Ix86: better handling of large integer constants in instruction selection.
+  - MIPS: fixed wrong asm generated for String.length "literal".
+
+* Standard library:
+  - Added the "ignore" primitive function, which just throws away its
+    argument and returns "()".  It allows to write
+    "ignore(f x); y" if "f x" doesn't have type unit and you don't
+    want the warning caused by "f x; y".
+  - Added the "Buffer" module (extensible string buffers).
+  - Module Format: added formatting to buffers and to strings.
+  - Added "mem" functions (membership test) to Hashtbl and Map.
+  - Module List: added find, filter, partition.
+    Renamed remove and removeq to remove_assoc and remove_assq.
+  - Module Marshal: fixed bug in marshaling functions when passed functional
+    values defined by mutual recursion with other functions.
+  - Module Printf: added Printf.bprintf (print to extensible buffer);
+    added %i format as synonymous for %d (as per the docs).
+  - Module Sort: added Sort.array (Quicksort).
+
+* Runtime system:
+  - New callback functions for callbacks with arbitrary many arguments
+    and for catching Caml exceptions escaping from a callback.
+
+* The ocamldep dependency generator: now performs full parsing of the
+    sources, taking into account the scope of module bindings.
+
+* The ocamlyacc parser generator: fixed sentinel error causing wrong
+    tables to be generated in some cases.
+
+* The str library:
+  - Added split_delim, full_split as variants of split that control
+    more precisely what happens to delimiters.
+  - Added replace_matched for separate matching and replacement operations.
+
+* The graphics library:
+  - Bypass color lookup for 16 bpp and 32 bpp direct-color displays.
+  - Larger color cache.
+
+* The thread library:
+  - Bytecode threads: more clever use of non-blocking I/O, makes I/O
+    operations faster.
+  - POSIX threads: gcc-ism removed, should now compile on any ANSI C compiler.
+  - Both: avoid memory leak in the Event module when a communication
+    offer is never selected.
+
+* The Unix library:
+  - Fixed inversion of ctime and mtime in Unix.stat, Unix.fstat, Unix.lstat.
+  - Unix.establish_connection: properly reclaim socket if connect fails.
+
+* The DBM library: no longer crashes when calling Dbm.close twice.
+
+* Emacs mode:
+  - Updated with Garrigue and Zimmerman's latest version.
+  - Now include an "ocamltags" script for using etags on OCaml sources.
+
+* Win32 port:
+  - Fixed end-of-line bug in ocamlcp causing problems with generated sources.
+
+
+Objective Caml 2.01 (09 Dec 1998):
+----------------------------------
+
+* Typing:
+  - Added warning for expressions of the form "a; b" where a does not have
+    type "unit"; catches silly mistake such as
+    "record.lbl = newval; ..." instead of "record.lbl <- newval; ...".
+  - Typing bug in "let module" fixed.
+
+* Compilation:
+  - Fixed bug in compilation of recursive and mutually recursive classes.
+  - Option -w to turn specific warnings on/off.
+  - Option -cc to choose the C compiler used with ocamlc -custom and ocamlopt.
+
+* Bytecode compiler and bytecode interpreter:
+  - Intel x86: removed asm declaration causing "fixed or forbidden register
+    spilled" error with egcs and gcc 2.8 (but not with gcc 2.7, go figure).
+  - Revised handling of debugging information, allows faster linking with -g.
+
+* Native-code compiler:
+  - Fixed bugs in integer constant propagation.
+  - Out-of-bound accesses in array and strings now raise an Invalid_argument
+    exception (like the bytecode system) instead of stopping the program.
+  - Corrected scheduling of bound checks.
+  - Port to the StrongARM under Linux (e.g. Corel Netwinder).
+  - I386: fixed bug in profiled code (ocamlopt -p).
+  - Mips: switched to -n32 model under IRIX; dropped the Ultrix port.
+  - Sparc: simplified the addressing modes, allows for better scheduling.
+  - Fixed calling convention bug for Pervasives.modf.
+
+* Toplevel:
+  - #trace works again.
+  - ocamlmktop: use matching ocamlc, not any ocamlc from the search path.
+
+* Memory management:
+  - Fixed bug in heap expansion that could cause the GC to loop.
+
+* C interface:
+  - New macros CAMLparam... and CAMLlocal... to simplify the handling
+    of local roots in C code.
+  - Simplified procedure for allocating and filling Caml blocks from C.
+  - Declaration of string_length in <caml/mlvalues.h>.
+
+* Standard library:
+  - Module Format: added {get,set}_all_formatter_output_functions,
+    formatter_of_out_channel, and the control sequence @<n> in printf.
+  - Module List: added mem_assoc, mem_assq, remove, removeq.
+  - Module Pervasives: added float_of_int (synonymous for float),
+    int_of_float (truncate), int_of_char (Char.code), char_of_int (Char.chr),
+    bool_of_string.
+  - Module String: added contains, contains_from, rcontains_from.
+
+* Unix library:
+  - Unix.lockf: added F_RLOCK, F_TRLOCK; use POSIX locks whenever available.
+  - Unix.tc{get,set}attr: added non-standard speeds 57600, 115200, 230400.
+  - Unix.chroot: added.
+
+* Threads:
+  - Bytecode threads: improved speed of I/O scheduling.
+  - Native threads: fixed a bug involving signals and exceptions
+    generated from C.
+
+* The "str" library:
+  - Added Str.string_partial_match.
+  - Bumped size of internal stack.
+
+* ocamlyacc: emit correct '# lineno' directive for prelude part of .mly file.
+
+* Emacs editing mode: updated with Jacques Garrigue's newest code.
+
+* Windows port:
+  - Added support for the "-cclib -lfoo" option (instead of
+     -cclib /full/path/libfoo.lib as before).
+  - Threads: fixed a bug at initialization time.
+
+* Macintosh port: source code for Macintosh application merged in.
+
+
+Objective Caml 2.00 (19 Aug 1998):
+----------------------------------
+
+* Language:
+  - New class language.  See http://caml.inria.fr/ocaml/refman/
+    for a tutorial (chapter 2) and for the reference manual (section 4.9).
+  - Local module definitions "let module X = <module-expr> in <expr>".
+  - Record copying with update "{r with lbl1 = expr1; ...}".
+  - Array patterns "[|pat1; ...;patN|]" in pattern-matchings.
+  - New reserved keywords: "object", "initializer".
+  - No longer reserved: "closed", "protected".
+
+* Bytecode compiler:
+  - Use the same compact memory representations for float arrays, float
+    records and recursive closures as the native-code compiler.
+  - More type-dependent optimizations.
+  - Added the -use_runtime and -make_runtime flags to build separately
+    and reuse afterwards custom runtime systems
+    (inspired by Fabrice Le Fessant's patch).
+
+* Native-code compiler:
+  - Cross-module constant propagation of integer constants.
+  - More type-dependent optimizations.
+  - More compact code generated for "let rec" over data structures.
+  - Better code generated for "for" loops (test at bottom of code).
+  - More aggressive scheduling of stores.
+  - Added -p option for time profiling with gprof
+    (fully supported on Intel x86/Linux and Alpha/Digital Unix only)
+    (inspired by Aleksey Nogin's patch).
+  - A case of bad spilling with high register pressure fixed.
+  - Fixed GC bug when GC called from C without active Caml code.
+  - Alpha: $gp handling revised to follow Alpha's standard conventions,
+    allow running "atom" and "pixie" on ocamlopt-generated binaries.
+  - Intel x86: use movzbl and movsbl systematically to load 8-bit and 16-bit
+    quantities, no more hacks with partial registers (better for the
+    Pentium Pro, worse for the Pentium).
+  - PowerPC: more aggressive scheduling of return address reloading.
+  - Sparc: scheduling bug related to register pairs fixed.
+
+* Runtime system:
+  - Better printing of uncaught exceptions (print a fully qualified
+    name whenever possible).
+
+* New ports:
+  - Cray T3E (bytecode only) (in collaboration with CEA).
+  - PowerMac under Rhapsody.
+  - SparcStations under Linux.
+
+* Standard library:
+  - Added set_binary_mode_in and set_binary_mode_out in Pervasives
+    to toggle open channels between text and binary modes.
+  - output_value and input_value check that the given channel is in
+    binary mode.
+  - input_value no longer fails on very large marshalled data (> 16 Mbytes).
+  - Module Arg: added option Rest.
+  - Module Filename: temp_file no longer loops if temp dir doesn't exist.
+  - Module List: added rev_append (tail-rec alternative to @).
+  - Module Set: tell the truth about "elements" returning a sorted list;
+    added min_elt, max_elt, singleton.
+  - Module Sys: added Sys.time for simple measuring of CPU time.
+
+* ocamllex:
+  - Check for overflow when generating the tables for the automaton.
+  - Error messages in generated .ml file now point to .mll source.
+  - Added "let <id> = <regexp>" to name regular expressions
+    (inspired by Christian Lindig's patch).
+
+* ocamlyacc:
+  - Better error recovery in presence of EOF tokens.
+  - Error messages in generated .ml file now point to .mly source.
+  - Generated .ml file now type-safe even without the generated .mli file.
+
+* The Unix library:
+  - Use float instead of int to represent Unix times (number of seconds
+    from the epoch).  This fixes a year 2005 problem on 32-bit platforms.
+    Functions affected: stat, lstat, fstat, time, gmtime, localtime,
+    mktime, utimes.
+  - Added putenv.
+  - Better handling of "unknown" error codes (EUNKNOWNERR).
+  - Fixed endianness bug in getservbyport.
+  - win32unix (the Win32 implementation of the Unix library) now has
+    the same interface as the unix implementation, this allows exchange
+    of compiled .cmo and .cmi files between Unix and Win32.
+
+* The thread libraries:
+  - Bytecode threads: bug with escaping exceptions fixed.
+  - System threads (POSIX, Win32): malloc/free bug fixed; signal bug fixed.
+  - Both: added Thread.wait_signal to wait synchronously for signals.
+
+* The graph library: bigger color cache.
+
+* The str library: added Str.quote, Str.regexp_string,
+  Str.regexp_string_case_fold.
+
+* Emacs mode:
+  - Fixed bug with paragraph fill.
+  - Fixed bug with next-error under Emacs 20.
+
+
+Objective Caml 1.07 (11 Dec 1997):
+----------------------------------
+
+* Native-code compiler:
+  - Revised interface between generated code and GC, fixes serious GC
+    problems with signals and native threads.
+  - Added "-thread" option for compatibility with ocamlc.
+
+* Debugger: correctly print instance variables of objects.
+
+* Run-time system: ported to OpenBSD.
+
+* Standard library: fixed wrong interface for Marshal.to_buffer and
+  Obj.unmarshal.
+
+* Num library: added Intel x86 optimized asm code (courtesy of
+  Bernard Serpette).
+
+* Thread libraries:
+  - Native threads: fixed GC bugs and installation procedure.
+  - Bytecode threads: fixed problem with "Marshal" module.
+  - Both: added Event.always.
+
+* MS Windows port: better handling of long command lines in Sys.command
+
+Objective Caml 1.06 (18 Nov 1997):
+----------------------------------
+
+* Language:
+  - Added two new keywords: "assert" (check assertion) and "lazy"
+    (delay evaluation).
+  - Allow identifiers to start with "_" (such identifiers are treated
+    as lowercase idents).
+
+* Objects:
+  - Added "protected" methods (visible only from subclasses, can be hidden
+    in class type declared in module signature).
+  - Objects can be compared using generic comparison functions.
+  - Fixed compilation of partial application of object constructors.
+
+* Type system:
+  - Occur-check now more strict (all recursions must traverse an object).
+  - A few bugs fixed.
+
+* Run-time system:
+  - A heap compactor was implemented, so long-running programs can now
+    fight fragmentation.
+  - The meaning of the "space_overhead" parameter has changed.
+  - The macros Push_roots and Pop_roots are superseded by Begin_roots* and
+    End_roots.
+  - Bytecode executable includes list of primitives used, avoids crashes
+    on version mismatch.
+  - Reduced startup overhead for marshalling, much faster marshalling of
+    small objects.
+  - New exception Stack_overflow distinct from Out_of_memory.
+  - Maximum stack size configurable.
+  - I/O revised for compatibility with compactor and with native threads.
+  - All C code ANSIfied (new-style function declarations, etc).
+  - Threaded code work on all 64-bit processors, not just Alpha/Digital Unix.
+  - Better printing of uncaught exceptions.
+
+* Both compilers:
+  - Parsing: more detailed reporting of syntax errors (e.g. shows
+    unmatched opening parenthesis on missing closing parenthesis).
+  - Check consistency between interfaces (.cmi).
+  - Revised rules for determining dependencies between modules.
+  - Options "-verbose" for printing calls to C compiler, "-noassert"
+    for turning assertion checks off.
+
+* Native-code compiler:
+  - Machine-dependent parts rewritten using inheritance instead of
+    parameterized modules.
+  - GC bug in value let rec fixed.
+  - Port to Linux/Alpha.
+  - Sparc: cleaned up use of %g registers, now compatible with Solaris threads.
+
+* Top-level interactive system:
+  - Can execute Caml script files given on command line.
+  - Reads commands from ./.ocamlinit on startup.
+  - Now thread-compatible.
+
+* Standard library:
+  - New library module: Lazy (delayed computations).
+  - New library module: Marshal.  Allows marshalling to strings and
+    transmission of closures between identical programs (SPMD parallelism).
+  - Filename: "is_absolute" is superseded by "is_implicit" and "is_relative".
+    To adapt old programs, change "is_absolute x" to "not (is_implicit x)"
+    (but the new "is_relative" is NOT the opposite of the old "is_absolute").
+  - Array, Hashtbl, List, Map, Queue, Set, Stack, Stream:
+    the "iter" functions now take as argument a unit-returning function.
+  - Format: added "printf" interface to the formatter (see the documentation).
+    Revised behaviour of simple boxes: no more than one new line is output
+    when consecutive break hints should lead to multiple line breaks.
+  - Stream: revised implementation, renamed Parse_failure to Failure and
+    Parse_error to Error (don't you love gratuitous changes?).
+  - String: added index, rindex, index_from, rindex_from.
+  - Array: added mapi, iteri, fold_left, fold_right, init.
+  - Added Map.map, Set.subset, Printexc.to_string.
+
+* ocamllex: lexers generated by ocamllex can now handle all characters,
+  including '\000'.
+
+* ocamlyacc: fixed bug with function closures returned by parser rules.
+
+* Debugger:
+  - Revised generation of events.
+  - Break on function entrance.
+  - New commands start/previous.
+  - The command loadprinter now try to recursively load required
+    modules.
+  - Numerous small fixes.
+
+* External libraries:
+  - systhreads: can now use POSIX threads; POSIX and Win32 threads are
+    now supported by the native-code compiler.
+  - dbm and graph: work in native code.
+  - num: fixed bug in Nat.nat_of_string.
+  - str: fixed deallocation bug with case folding.
+  - win32unix: use Win32 handles instead of (buggy) VC++ emulation of Unix
+    file handles; added gettimeofday.
+
+* Emacs editing mode and debugger interface updated to July '97 version.
+
+Objective Caml 1.05 (21 Mar 1997):
+----------------------------------
+
+* Typing: fixed several bugs causing spurious type errors.
+
+* Native-code compiler: fixed instruction selection bug causing GC to
+see ill-formed pointers; fixed callbacks to support invocation from a
+main program in C.
+
+* Standard library: fixed String.lowercase; Weak now resists integers.
+
+* Toplevel: multiple phrases without intermediate ";;" now really supported;
+fixed value printing problems where the wrong printer was selected.
+
+* Debugger: fixed printing problem with local references; revised
+handling of checkpoints; various other small fixes.
+
+* Macintosh port: fixed signed division problem in bytecomp/emitcode.ml
+
+Objective Caml 1.04 (11 Mar 1997):
+----------------------------------
+
+* Replay debugger ported from Caml Light; added debugger support in
+  compiler (option -g) and runtime system. Debugger is alpha-quality
+  and needs testing.
+
+* Parsing:
+  - Support for "# linenum" directives.
+  - At toplevel, allow several phrases without intermediate ";;".
+
+* Typing:
+  - Allow constraints on datatype parameters, e.g.
+    type 'a foo = ... constraint 'a = 'b * 'c.
+  - Fixed bug in signature matching in presence of free type variables '_a.
+  - Extensive cleanup of internals of type inference.
+
+* Native-code compilation:
+  - Inlining of small functions at point of call (fairly conservative).
+  - MIPS code generator ported to SGI IRIX 6.
+  - Better code generated for large integer constants.
+  - Check for urgent GC when allocating large objects in major heap.
+  - PowerPC port: better scheduling, reduced TOC consumption.
+  - HPPA port: handle long conditional branches gracefully,
+    several span-dependent bugs fixed.
+
+* Standard library:
+  - More floating-point functions (all ANSI C float functions now available).
+  - Hashtbl: added functorial interface (allow providing own equality
+    and hash functions); rehash when resizing, avoid memory leak on
+    Hashtbl.remove.
+  - Added Char.uppercase, Char.lowercase, String.uppercase, String.lowercase,
+    String.capitalize, String.uncapitalize.
+  - New module Weak for manipulating weak pointers.
+  - New module Callback for registering closures and exceptions to be
+    used from C.
+
+* Foreign interface:
+  - Better support for callbacks (C calling Caml), exception raising
+    from C, and main() in C. Added function to remove a global root.
+  - Option -output-obj to package Caml code as a C library.
+
+* Thread library: fixed bug in timed_read and timed_write operations;
+  Lexing.from_function and Lexing.from_channel now reentrant.
+
+* Unix interface: renamed EACCESS to EACCES (the POSIX name); added setsid;
+  fixed bug in inet_addr_of_string for 64-bit platforms.
+
+* Ocamlyacc: default error function no longer prevents error recovery.
+
+* Ocamllex: fixed reentrancy problem w.r.t. exceptions during refill;
+  fixed output problem (\r\r\n) under Win32.
+
+* Macintosh port:
+  - The makefiles are provided for compiling and installing O'Caml on
+    a Macintosh with MPW 3.4.1.
+  - An application with the toplevel in a window is forthcoming.
+
+* Windows NT/95 port: updated toplevel GUI to that of Caml Light 0.73.
+
+* Emacs editing mode and debugger interface included in distribution.
+
+
+Objective Caml 1.03 (29 Oct 1996):
+----------------------------------
+
+* Typing:
+  - bug with type names escaping their scope via unification with
+    non-generalized type variables '_a completely fixed;
+  - fixed bug in occur check : it was too restrictive;
+  - fixed bug of coercion operators;
+  - check that no two types of the same name are generated in a module
+    (there was no check for classes);
+  - "#install_printer" works again;
+  - fixed bug in printing of subtyping errors;
+  - in class interfaces, construct "method m" (without type) change
+    the status of method m from abstract to concrete;
+  - in a recursive definition of class interfaces, a class can now
+    inherit from a previous class;
+  - typing of a method make use of an eventual previously given type
+    of this method, yielding clearer type errors.
+
+* Compilation (ocamlc and ocamlopt):
+  - fixed bug in compilation of classes.
+
+* Native-code compilation:
+  - optimization of functions taking tuples of arguments;
+  - code emitter for the Motorola 680x0 processors (retrocomputing week);
+  - Alpha/OSF1: generate frame descriptors, avoids crashes when e.g.
+    exp() or log() cause a domain error; fixed bug with
+    String.length "literal";
+  - Sparc, Mips, HPPA: removed marking of scanned stack frames
+    (benefits do not outweight cost).
+
+* Standard library:
+  - Arg.parse now prints documentation for command-line options;
+  - I/O buffers (types in_channel and out_channel) now heap-allocated,
+    avoids crashing when closing a channel several times;
+  - Overflow bug in compare() fixed;
+  - GC bug in raising Sys_error from I/O functions fixed;
+  - Parsing.symbol_start works even for epsilon productions.
+
+* Foreign interface: main() in C now working, fixed bug in library
+  order at link time.
+
+* Thread library: guard against calling thread functions before Thread.create.
+
+* Unix library: fixed getsockopt, setsockopt, open_process_{in,out}.
+
+* Perl-free, cpp-free, cholesterol-free installation procedure.
+
+
+Objective Caml 1.02 (27 Sep 1996):
+----------------------------------
+
+* Typing:
+  - fixed bug with type names escaping their scope via unification
+    with non-generalized type variables '_a;
+  - keep #class abbreviations longer;
+  - faster checking of well-formed abbreviation definitions;
+  - stricter checking of "with" constraints over signatures (arity
+    mismatch, overriding of an already manifest type).
+
+* Compilation (ocamlc and ocamlopt):
+  - fixed bug in compilation of recursive classes;
+  - [|...|] and let...rec... allowed inside definitions of recursive
+    data structures;
+
+* Bytecode compilation: fixed overflow in linker for programs with
+  more than 65535 globals and constants.
+
+* Native-code compilation:
+  - ocamlopt ported to HPPA under HP/UX, Intel x86 under Solaris 2,
+    PowerMacintosh under MkLinux;
+  - fixed two bugs related to floating-point arrays (one with "t array"
+    where t is an abstract type implemented as float, one with
+    comparison between two float arrays on 32 bit platforms);
+  - fixed reloading/spilling problem causing non-termination of
+    register allocation;
+  - fixed bugs in handling of () causing loss of tail recursion;
+  - fixed reloading bug in indirect calls.
+
+* Windows NT/95 port:
+  - complete port of the threads library (Pascal Cuoq);
+  - partial port of the Unix library (Pascal Cuoq);
+  - expansion of *, ? and @ on the command line.
+
+* Standard library:
+  - bug in in List.exists2 fixed;
+  - bug in "Random.int n" for very large n on 64-bit machines fixed;
+  - module Format: added a "general purpose" type of box (open_box);
+    can output on several formatters at the same time.
+
+* The "threads" library:
+  - implementation on top of native threads available for Win32 and
+    POSIX 1003.1c;
+  - added -thread option to select a thread-safe version of the
+    standard library, the ThreadIO module is no longer needed.
+
+* The "graph" library: avoid invalid pixmaps when doing
+  open_graph/close_graph several times.
+
+* The "dynlink" library: support for "private" (no re-export) dynamic loading.
+
+* ocamlyacc: skip '...' character literals correctly.
+
+* C interface: C code linked with O'Caml code can provide its own main()
+  and call caml_main() later.
+
+
+Objective Caml 1.01 (12 Jun 1996):
+----------------------------------
+
+* Typing: better report of type incompatibilities;
+  non-generalizable type variables in a struct...end no longer flagged
+  immediately as an error;
+  name clashes during "open" avoided.
+
+* Fixed bug in output_value where identical data structures
+  could have different external representations; this bug caused wrong
+  "inconsistent assumptions" errors when checking compatibility of
+  interfaces at link-time.
+
+* Standard library: fixed bug in Array.blit on overlapping array sections
+
+* Unmarshaling from strings now working.
+
+* ocamlc, ocamlopt: new flags -intf and -impl to force compilation as
+  an implementation/an interface, regardless of file extension;
+  overflow bug on wide-range integer pattern-matchings fixed.
+
+* ocamlc: fixed bytecode generation bug causing problems with compilation
+  units defining more than 256 values
+
+* ocamlopt, all platforms:
+  fixed GC bug in "let rec" over data structures;
+  link startup file first, fixes "undefined symbol" errors with some
+  libraries.
+
+* ocamlopt, Intel x86:
+  more efficient calling sequence for calling C functions;
+  floating-point wars, chapter 5: don't use float stack for holding
+  float pseudo-registers, stack-allocating them is just as efficient.
+
+* ocamlopt, Alpha and Intel x86: more compact calling sequence for garbage
+  collection.
+
+* ocamllex: generated automata no longer use callbacks for refilling
+  the input buffer (works better with threads); character literals
+  correctly skipped inside actions.
+
+* ocamldep: "-I" directories now searched in the right order
+
+* Thread library: incompatibilities with callbacks, signals, and
+  dynamic linking removed; scheduling bug with Thread.wait fixed.
+
+* New "dbm" library, interfaces with NDBM.
+
+* Object-oriented extensions:
+    instance variables can now be omitted in class types;
+    some error messages have been made clearer;
+    several bugs fixes.
+
+Objective Caml 1.00 (9 May 1996):
+---------------------------------
+
+* Merge of Jérôme Vouillon and Didier Rémy's object-oriented
+extensions.
+
+* All libraries: all "new" functions renamed to "create" because "new"
+is now a reserved keyword.
+
+* Compilation of "or" patterns (pat1 | pat2) completely revised to
+avoid code size explosion.
+
+* Compiler support for preprocessing source files (-pp flag).
+
+* Library construction: flag -linkall to force linking of all units in
+a library.
+
+* Native-code compiler: port to the Sparc under NetBSD.
+
+* Toplevel: fixed bug when tracing several times the same function
+under different names.
+
+* New format for marshaling arbitrary data structures, allows
+marshaling to/from strings.
+
+* Standard library: new module Genlex (configurable lexer for streams)
+
+* Thread library: much better support for I/O and blocking system calls.
+
+* Graphics library: faster reclaimation of unused pixmaps.
+
+* Unix library: new functions {set,clear}_nonblock, {set,clear}_close_on_exec,
+{set,get}itimer, inet_addr_any, {get,set}sockopt.
+
+* Dynlink library: added support for linking libraries (.cma files).
+
+Caml Special Light 1.15 (15 Mar 1996):
+--------------------------------------
+
+* Caml Special Light now runs under Windows NT and 95. Many thanks to
+Kevin Gallo (Microsoft Research) who contributed his initial port.
+
+* csllex now generates tables for a table-driven automaton.
+The resulting lexers are smaller and run faster.
+
+* Completely automatic configuration script.
+
+* Typing: more stringent checking of module type definitions against
+manifest module type specifications.
+
+* Toplevel: recursive definitions of values now working.
+
+* Native-code compiler, all platforms:
+        toplevel "let"s with refutable patterns now working;
+        fixed bug in assignment to float record fields;
+        direct support for floating-point negation and absolute value.
+
+* Native-code compiler, x86: fixed bug with tail calls (with more than
+4 arguments) from a function with a one-word stack frame.
+
+* Native-code compiler, Sparc: problem with -compact fixed.
+
+* Thread library: support for non-blocking writes; scheduler revised.
+
+* Unix library: bug in gethostbyaddr fixed; bounds checking for read,
+write, etc.
+
+Caml Special Light 1.14 (8 Feb 1996):
+-------------------------------------
+
+* cslopt ported to the PowerPC/RS6000 architecture. Better support for
+AIX in the bytecode system as well.
+
+* cslopt, all platforms: fixed bug in live range splitting around catch/exit.
+
+* cslopt for the Intel (floating-point wars, chapter 4):
+implemented Ershov's algorithm to minimize floating-point stack usage;
+out-of-order pops fixed.
+
+* Several bug fixes in callbacks and signals.
+
+Caml Special Light 1.13 (4 Jan 1996):
+-------------------------------------
+
+* Pattern-matching compilation revised to factor out accesses inside
+matched structures.
+
+* Callbacks and signals now supported in cslopt.
+Signals are only detected at allocation points, though.
+Added callback functions with 2 and 3 arguments.
+
+* More explicit error messages when a native-code program aborts due
+to array or string bound violations.
+
+* In patterns, "C _" allowed even if the constructor C has several arguments.
+
+* && and || allowed as alternate syntax for & and or.
+
+* cslopt for the Intel: code generation for floating-point
+operations entirely redone for the third time (a pox on whomever at
+Intel decided to organize the floating-point registers as a stack).
+
+* cslopt for the Sparc: don't use Sparc V8 smul and sdiv instructions,
+emulation on V7 processors is abysmal.
+
+Caml Special Light 1.12 (30 Nov 1995):
+--------------------------------------
+
+* Fixed an embarrassing bug with references to floats.
+
+Caml Special Light 1.11 (29 Nov 1995):
+--------------------------------------
+
+* Streams and stream parsers a la Caml Light are back (thanks to
+Daniel de Rauglaudre).
+
+* User-level concurrent threads, with low-level shared memory primitives
+(locks and conditions) as well as channel-based communication primitives
+with first-class synchronous events, in the style of Reppy's CML.
+
+* The native-code compiler has been ported to the HP PA-RISC processor
+running under NextStep (sorry, no HPUX, its linker keeps dumping
+core on me).
+
+* References not captured in a function are optimized into variables.
+
+* Fixed several bugs related to exceptions.
+
+* Floats behave a little more as specified in the IEEE standard
+(believe it or not, but x < y is not the negation of x >= y).
+
+* Lower memory consumption for the native-code compiler.
+
+Caml Special Light 1.10 (07 Nov 1995):
+--------------------------------------
+
+* Many bug fixes (too many to list here).
+
+* Module language: introduction of a "with module" notation over
+signatures for concise sharing of all type components of a signature;
+better support for concrete types in signatures.
+
+* Native-code compiler: the Intel 386 version has been ported to
+NextStep and FreeBSD, and generates better code (especially for
+floats)
+
+* Tools and libraries: the Caml Light profiler and library for
+arbitrary-precision arithmetic have been ported (thanks to John
+Malecki and Victor Manuel Gulias Fernandez); better docs for the Unix
+and regexp libraries.
+
+Caml Special Light 1.07 (20 Sep 1995):
+--------------------------------------
+
+* Syntax: optional ;; allowed in compilation units and structures
+(back by popular demand)
+
+* cslopt:
+generic handling of float arrays fixed
+direct function application when the function expr is not a path fixed
+compilation of "let rec" over values fixed
+multiple definitions of a value name in a module correctly handled
+no calls to ranlib in Solaris
+
+* csltop: #trace now working
+
+* Standard library: added List.memq; documentation of Array fixed.
+
+Caml Special Light 1.06 (12 Sep 1995):
+--------------------------------------
+
+* First public release.

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File ocaml-fix_aarch64_build.patch of Package ocaml (Revision c2be04886a32107508f9c7969d8f2a45)

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