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gdb.18935
gdb-vla-intel-fortran-vla-strings.patch
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File gdb-vla-intel-fortran-vla-strings.patch of Package gdb.18935
From FEDORA_PATCHES Mon Sep 17 00:00:00 2001 From: Fedora GDB patches <invalid@email.com> Date: Fri, 27 Oct 2017 21:07:50 +0200 Subject: gdb-vla-intel-fortran-vla-strings.patch ;;=push git diff --stat -p gdb/master...gdb/users/bheckel/fortran-vla-strings 0ad7d8d1a3a36c6e04e3b6d37d8825f18d595723 gdb/NEWS | 2 + gdb/c-valprint.c | 22 +++++ gdb/dwarf2read.c | 158 +++++++++++++++++++++++++----- gdb/f-typeprint.c | 93 +++++++++--------- gdb/gdbtypes.c | 44 ++++++++- gdb/testsuite/gdb.cp/vla-cxx.cc | 9 ++ gdb/testsuite/gdb.cp/vla-cxx.exp | 9 ++ gdb/testsuite/gdb.fortran/pointers.exp | 143 +++++++++++++++++++++++++++ gdb/testsuite/gdb.fortran/pointers.f90 | 109 +++++++++++++++++++++ gdb/testsuite/gdb.fortran/print_type.exp | 100 +++++++++++++++++++ gdb/testsuite/gdb.fortran/vla-ptype.exp | 12 +-- gdb/testsuite/gdb.fortran/vla-strings.exp | 103 +++++++++++++++++++ gdb/testsuite/gdb.fortran/vla-strings.f90 | 39 ++++++++ gdb/testsuite/gdb.fortran/vla-type.exp | 7 +- gdb/testsuite/gdb.fortran/vla-value.exp | 12 ++- gdb/testsuite/gdb.mi/mi-var-child-f.exp | 7 +- gdb/testsuite/gdb.mi/mi-vla-fortran.exp | 27 ++--- gdb/typeprint.c | 19 ++++ gdb/valops.c | 16 ++- gdb/valprint.c | 6 -- 20 files changed, 827 insertions(+), 110 deletions(-) diff --git a/gdb/NEWS b/gdb/NEWS --- a/gdb/NEWS +++ b/gdb/NEWS @@ -985,6 +985,8 @@ SH-5/SH64 running OpenBSD SH-5/SH64 support in sh*-*-openbsd* *** Changes in GDB 8.1 +* Fortran: Support pointers to dynamic types. + * GDB now supports dynamically creating arbitrary register groups specified in XML target descriptions. This allows for finer grain grouping of registers on systems with a large amount of registers. diff --git a/gdb/c-valprint.c b/gdb/c-valprint.c --- a/gdb/c-valprint.c +++ b/gdb/c-valprint.c @@ -572,6 +572,28 @@ c_value_print (struct value *val, struct ui_file *stream, else { /* normal case */ + if (type->code () == TYPE_CODE_PTR + && 1 == is_dynamic_type (type)) + { + CORE_ADDR addr; + if (NULL != TYPE_DATA_LOCATION (TYPE_TARGET_TYPE (type))) + addr = value_address (val); + else + addr = value_as_address (val); + + /* We resolve the target-type only when the + pointer is associated. */ + if ((addr != 0) + && (0 == type_not_associated (type))) + TYPE_TARGET_TYPE (type) = + resolve_dynamic_type (TYPE_TARGET_TYPE (type), + {}, addr); + } + else + { + /* Do nothing. References are already resolved from the beginning, + only pointers are resolved when we actual need the target. */ + } fprintf_filtered (stream, "("); type_print (value_type (val), "", stream, -1); fprintf_filtered (stream, ") "); diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c --- a/gdb/dwarf2/read.c +++ b/gdb/dwarf2/read.c @@ -1562,7 +1562,10 @@ static void read_signatured_type (signatured_type *sig_type, static int attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, struct dwarf2_cu *cu, - struct dynamic_prop *prop, struct type *type); + struct dynamic_prop *prop, + struct type *default_type, + const gdb_byte *additional_data, + int additional_data_size); /* memory allocation interface */ @@ -13631,7 +13634,7 @@ read_func_scope (struct die_info *die, struct dwarf2_cu *cu) newobj->static_link = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); attr_to_dynamic_prop (attr, die, cu, newobj->static_link, - cu->addr_type ()); + cu->addr_type (), NULL, 0); } cu->list_in_scope = cu->get_builder ()->get_local_symbols (); @@ -16073,7 +16076,7 @@ read_structure_type (struct die_info *die, struct dwarf2_cu *cu) else { struct dynamic_prop prop; - if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) + if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type (), NULL, 0)) type->add_dyn_prop (DYN_PROP_BYTE_SIZE, prop); TYPE_LENGTH (type) = 0; } @@ -16764,7 +16767,7 @@ read_array_type (struct die_info *die, struct dwarf2_cu *cu) byte_stride_prop = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, - prop_type); + prop_type, NULL, 0); if (!stride_ok) { complaint (_("unable to read array DW_AT_byte_stride " @@ -17522,7 +17525,7 @@ read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) struct attribute *attr; struct dynamic_prop prop; bool length_is_constant = true; - LONGEST length; + ULONGEST length = UINT_MAX; /* There are a couple of places where bit sizes might be made use of when parsing a DW_TAG_string_type, however, no producer that we know @@ -17543,6 +17546,10 @@ read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) } } + index_type = objfile_type (objfile)->builtin_int; + range_type = create_static_range_type (NULL, index_type, 1, length); + + /* If DW_AT_string_length is defined, the length is stored in memory. */ attr = dwarf2_attr (die, DW_AT_string_length, cu); if (attr != nullptr && !attr->form_is_constant ()) { @@ -17569,13 +17576,68 @@ read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) } /* Convert the attribute into a dynamic property. */ - if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) + if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type, NULL, 0)) length = 1; else length_is_constant = false; } else if (attr != nullptr) { + if (attr->form_is_block ()) + { + struct attribute *byte_size, *bit_size; + struct dynamic_prop high; + + byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); + bit_size = dwarf2_attr (die, DW_AT_bit_size, cu); + + /* DW_AT_byte_size should never occur in combination with + DW_AT_bit_size. */ + if (byte_size != NULL && bit_size != NULL) + complaint (_("DW_AT_byte_size AND " + "DW_AT_bit_size found together at the same time.")); + + /* If DW_AT_string_length AND DW_AT_byte_size exist together, + DW_AT_byte_size describes the number of bytes that should be read + from the length memory location. */ + if (byte_size != NULL) + { + /* Build new dwarf2_locexpr_baton structure with additions to the + data attribute, to reflect DWARF specialities to get address + sizes. */ + const gdb_byte append_ops[] = + { + /* DW_OP_deref_size: size of an address on the target machine + (bytes), where the size will be specified by the next + operand. */ + DW_OP_deref_size, + /* Operand for DW_OP_deref_size. */ + (gdb_byte) DW_UNSND(byte_size) }; + + if (!attr_to_dynamic_prop (attr, die, cu, &high, index_type, + append_ops, ARRAY_SIZE(append_ops))) + complaint (_("Could not parse DW_AT_byte_size")); + } + else if (bit_size != NULL) + complaint (_("DW_AT_string_length AND " + "DW_AT_bit_size found but not supported yet.")); + /* If DW_AT_string_length WITHOUT DW_AT_byte_size exist, the default + is the address size of the target machine. */ + else + { + const gdb_byte append_ops[] = + { DW_OP_deref }; + + if (!attr_to_dynamic_prop (attr, die, cu, &high, index_type, + append_ops, ARRAY_SIZE(append_ops))) + complaint (_("Could not parse DW_AT_string_length")); + } + + range_type->bounds ()->high = high; + } + else + range_type->bounds ()->high.set_const_val (DW_UNSND(attr)); + /* This DW_AT_string_length just contains the length with no indirection. There's no need to create a dynamic property in this case. Pass 0 for the default value as we know it will not be @@ -17589,6 +17651,14 @@ read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) } else { + /* Check for the DW_AT_byte_size attribute, which represents the length + in this case. */ + attr = dwarf2_attr (die, DW_AT_byte_size, cu); + if (attr) + range_type->bounds ()->high.set_const_val (DW_UNSND(attr)); + else + range_type->bounds ()->high.set_const_val (1); + /* Use 1 as a fallback length if we have nothing else. */ length = 1; } @@ -17603,6 +17673,7 @@ read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) low_bound.set_const_val (1); range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); } + char_type = language_string_char_type (cu->language_defn, gdbarch); type = create_string_type (NULL, char_type, range_type); @@ -18078,7 +18149,8 @@ read_base_type (struct die_info *die, struct dwarf2_cu *cu) static int attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, struct dwarf2_cu *cu, struct dynamic_prop *prop, - struct type *default_type) + struct type *default_type, + const gdb_byte *additional_data, int additional_data_size) { struct dwarf2_property_baton *baton; dwarf2_per_objfile *per_objfile = cu->per_objfile; @@ -18108,6 +18180,26 @@ attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, break; } + if (additional_data != NULL && additional_data_size > 0) + { + gdb_byte *data; + + data = (gdb_byte *) obstack_alloc( + &cu->per_objfile->objfile->objfile_obstack, + DW_BLOCK (attr)->size + additional_data_size); + memcpy (data, DW_BLOCK (attr)->data, DW_BLOCK (attr)->size); + memcpy (data + DW_BLOCK (attr)->size, additional_data, + additional_data_size); + + baton->locexpr.data = data; + baton->locexpr.size = DW_BLOCK (attr)->size + additional_data_size; + } + else + { + baton->locexpr.data = DW_BLOCK (attr)->data; + baton->locexpr.size = DW_BLOCK (attr)->size; + } + prop->set_locexpr (baton); gdb_assert (prop->baton () != NULL); } @@ -18142,11 +18234,31 @@ attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, baton->property_type = die_type (target_die, target_cu); baton->locexpr.per_cu = cu->per_cu; baton->locexpr.per_objfile = per_objfile; - baton->locexpr.size = DW_BLOCK (target_attr)->size; - baton->locexpr.data = DW_BLOCK (target_attr)->data; baton->locexpr.is_reference = true; + + if (additional_data != NULL && additional_data_size > 0) + { + gdb_byte *data; + + data = (gdb_byte *) obstack_alloc (&cu->per_objfile->objfile->objfile_obstack, + DW_BLOCK (target_attr)->size + additional_data_size); + memcpy (data, DW_BLOCK (target_attr)->data, + DW_BLOCK (target_attr)->size); + memcpy (data + DW_BLOCK (target_attr)->size, + additional_data, additional_data_size); + + baton->locexpr.data = data; + baton->locexpr.size = (DW_BLOCK (target_attr)->size + + additional_data_size); + } + else + { + baton->locexpr.data = DW_BLOCK (target_attr)->data; + baton->locexpr.size = DW_BLOCK (target_attr)->size; + } + prop->set_locexpr (baton); - gdb_assert (prop->baton () != NULL); + gdb_assert (prop->baton() != NULL); } else { @@ -18308,8 +18420,8 @@ read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) } attr = dwarf2_attr (die, DW_AT_lower_bound, cu); - if (attr != nullptr) - attr_to_dynamic_prop (attr, die, cu, &low, base_type); + if (attr) + attr_to_dynamic_prop (attr, die, cu, &low, base_type, NULL, 0); else if (!low_default_is_valid) complaint (_("Missing DW_AT_lower_bound " "- DIE at %s [in module %s]"), @@ -18318,10 +18430,10 @@ read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) struct attribute *attr_ub, *attr_count; attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); - if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) + if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type, NULL, 0)) { attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); - if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) + if (attr_to_dynamic_prop (attr, die, cu, &high, base_type, NULL, 0)) { /* If bounds are constant do the final calculation here. */ if (low.kind () == PROP_CONST && high.kind () == PROP_CONST) @@ -18372,7 +18484,7 @@ read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) { struct type *prop_type = cu->addr_sized_int_type (false); attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, - prop_type); + prop_type, NULL, 0); } struct dynamic_prop bit_stride_prop; @@ -18392,7 +18504,7 @@ read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) { struct type *prop_type = cu->addr_sized_int_type (false); attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, - prop_type); + prop_type, NULL, 0); } } @@ -24424,7 +24536,7 @@ set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) if (attr != NULL) { struct type *prop_type = cu->addr_sized_int_type (false); - if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) + if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type, NULL, 0)) type->add_dyn_prop (DYN_PROP_ALLOCATED, prop); } @@ -24433,13 +24545,13 @@ set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) if (attr != NULL) { struct type *prop_type = cu->addr_sized_int_type (false); - if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) + if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type, NULL, 0)) type->add_dyn_prop (DYN_PROP_ASSOCIATED, prop); } /* Read DW_AT_data_location and set in type. */ attr = dwarf2_attr (die, DW_AT_data_location, cu); - if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type ())) + if (attr_to_dynamic_prop (attr, die, cu, &prop, cu->addr_type (), NULL, 0)) type->add_dyn_prop (DYN_PROP_DATA_LOCATION, prop); if (per_objfile->die_type_hash == NULL) diff --git a/gdb/f-typeprint.c b/gdb/f-typeprint.c --- a/gdb/f-typeprint.c +++ b/gdb/f-typeprint.c @@ -217,8 +217,9 @@ f_type_print_varspec_suffix (struct type *type, struct ui_file *stream, else { LONGEST lower_bound = f77_get_lowerbound (type); + if (lower_bound != 1) /* Not the default. */ - fprintf_filtered (stream, "%s:", plongest (lower_bound)); + fprintf_filtered (stream, "%s:", plongest (lower_bound)); /* Make sure that, if we have an assumed size array, we print out a warning and print the upperbound as '*'. */ @@ -229,7 +230,7 @@ f_type_print_varspec_suffix (struct type *type, struct ui_file *stream, { LONGEST upper_bound = f77_get_upperbound (type); - fputs_filtered (plongest (upper_bound), stream); + fprintf_filtered (stream, "%s", plongest (upper_bound)); } } @@ -249,7 +250,7 @@ f_type_print_varspec_suffix (struct type *type, struct ui_file *stream, case TYPE_CODE_REF: f_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0, 1, 0, arrayprint_recurse_level, false); - fprintf_filtered (stream, " )"); + fprintf_filtered (stream, ")"); break; case TYPE_CODE_FUNC: diff --git a/gdb/gdbtypes.c b/gdb/gdbtypes.c --- a/gdb/gdbtypes.c +++ b/gdb/gdbtypes.c @@ -1977,7 +1977,8 @@ is_dynamic_type_internal (struct type *type, int top_level) type = check_typedef (type); /* We only want to recognize references at the outermost level. */ - if (top_level && type->code () == TYPE_CODE_REF) + if (top_level && + (type->code () == TYPE_CODE_REF || type-> code() == TYPE_CODE_PTR)) type = check_typedef (TYPE_TARGET_TYPE (type)); /* Types that have a dynamic TYPE_DATA_LOCATION are considered @@ -2017,10 +2018,10 @@ is_dynamic_type_internal (struct type *type, int top_level) || is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0)); } - case TYPE_CODE_STRING: /* Strings are very much like an array of characters, and can be treated as one here. */ case TYPE_CODE_ARRAY: + case TYPE_CODE_STRING: { gdb_assert (type->num_fields () == 1); @@ -2183,11 +2184,15 @@ resolve_dynamic_array_or_string (struct type *type, ary_dim = check_typedef (TYPE_TARGET_TYPE (elt_type)); - if (ary_dim != NULL && ary_dim->code () == TYPE_CODE_ARRAY) + if (ary_dim != NULL && (ary_dim->code () == TYPE_CODE_ARRAY + || ary_dim->code () == TYPE_CODE_STRING)) elt_type = resolve_dynamic_array_or_string (ary_dim, addr_stack); else elt_type = TYPE_TARGET_TYPE (type); + if (type->code () == TYPE_CODE_STRING) + return create_string_type (type, elt_type, range_type); + prop = type->dyn_prop (DYN_PROP_BYTE_STRIDE); if (prop != NULL) { @@ -2533,6 +2538,25 @@ resolve_dynamic_struct (struct type *type, return resolved_type; } +/* Worker for pointer types. */ + +static struct type * +resolve_dynamic_pointer (struct type *type, + struct property_addr_info *addr_stack) +{ + struct dynamic_prop *prop; + CORE_ADDR value; + + type = copy_type (type); + + /* Resolve associated property. */ + prop = TYPE_ASSOCIATED_PROP (type); + if (prop != NULL && dwarf2_evaluate_property (prop, NULL, addr_stack, &value)) + prop->set_const_val (value); + + return type; +} + /* Worker for resolved_dynamic_type. */ static struct type * @@ -2594,6 +2618,9 @@ resolve_dynamic_type_internal (struct type *type, case TYPE_CODE_ARRAY: resolved_type = resolve_dynamic_array_or_string (type, addr_stack); break; + case TYPE_CODE_PTR: + resolved_type = resolve_dynamic_pointer (type, addr_stack); + break; case TYPE_CODE_RANGE: resolved_type = resolve_dynamic_range (type, addr_stack); diff --git a/gdb/testsuite/gdb.cp/vla-cxx.cc b/gdb/testsuite/gdb.cp/vla-cxx.cc --- a/gdb/testsuite/gdb.cp/vla-cxx.cc +++ b/gdb/testsuite/gdb.cp/vla-cxx.cc @@ -15,6 +15,10 @@ You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ +extern "C" { +#include <stddef.h> +} + struct container; struct element @@ -40,11 +44,16 @@ int main(int argc, char **argv) typedef typeof (vla) &vlareftypedef; vlareftypedef vlaref2 (vla); container c; + typeof (vla) *ptr = NULL; + + // Before pointer assignment + ptr = &vla; for (int i = 0; i < z; ++i) vla[i] = 5 + 2 * i; // vlas_filled vla[0] = 2 * vla[0]; + return vla[2]; } diff --git a/gdb/testsuite/gdb.cp/vla-cxx.exp b/gdb/testsuite/gdb.cp/vla-cxx.exp --- a/gdb/testsuite/gdb.cp/vla-cxx.exp +++ b/gdb/testsuite/gdb.cp/vla-cxx.exp @@ -23,6 +23,12 @@ if ![runto_main] { return -1 } +gdb_breakpoint [gdb_get_line_number "Before pointer assignment"] +gdb_continue_to_breakpoint "Before pointer assignment" +gdb_test "ptype ptr" "int \\(\\*\\)\\\[variable length\\\]" "ptype ptr, Before pointer assignment" +gdb_test "print ptr" "\\(int \\(\\*\\)\\\[variable length\\\]\\) 0x0" "print ptr, Before pointer assignment" +gdb_test "print *ptr" "Cannot access memory at address 0x0" "print *ptr, Before pointer assignment" + gdb_breakpoint [gdb_get_line_number "vlas_filled"] gdb_continue_to_breakpoint "vlas_filled" @@ -33,3 +39,6 @@ gdb_test "print vlaref" " = \\(int \\(&\\)\\\[3\\\]\\) @$hex: \\{5, 7, 9\\}" # bug being tested, it's better not to depend on the exact spelling. gdb_test "print vlaref2" " = \\(.*\\) @$hex: \\{5, 7, 9\\}" gdb_test "print c" " = \\{e = \\{c = @$hex\\}\\}" +gdb_test "ptype ptr" "int \\(\\*\\)\\\[3\\\]" +gdb_test "print ptr" "\\(int \\(\\*\\)\\\[3\\\]\\) $hex" +gdb_test "print *ptr" " = \\{5, 7, 9\\}" diff --git a/gdb/testsuite/gdb.fortran/pointers.exp b/gdb/testsuite/gdb.fortran/pointers.exp new file mode 100644 --- /dev/null +++ b/gdb/testsuite/gdb.fortran/pointers.exp @@ -0,0 +1,143 @@ +# Copyright 2016 Free Software Foundation, Inc. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +standard_testfile "pointers.f90" +load_lib fortran.exp + +if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} \ + {debug f90 quiet}] } { + return -1 +} + +if ![runto_main] { + untested "could not run to main" + return -1 +} + +# Depending on the compiler being used, the type names can be printed differently. +set logical [fortran_logical4] +set real [fortran_real4] +set int [fortran_int4] +set complex [fortran_complex4] + + +gdb_breakpoint [gdb_get_line_number "Before pointer assignment"] +gdb_continue_to_breakpoint "Before pointer assignment" +gdb_test "print logp" "= \\(PTR TO -> \\( $logical\\)\\) 0x0" "print logp, not associated" +gdb_test "print *logp" "Cannot access memory at address 0x0" "print *logp, not associated" +gdb_test "print comp" "= \\(PTR TO -> \\( $complex\\)\\) 0x0" "print comp, not associated" +gdb_test "print *comp" "Cannot access memory at address 0x0" "print *comp, not associated" +gdb_test "print charp" "= \\(PTR TO -> \\( character\\*1\\)\\) 0x0" "print charp, not associated" +gdb_test "print *charp" "Cannot access memory at address 0x0" "print *charp, not associated" +gdb_test "print charap" "= \\(PTR TO -> \\( character\\*3\\)\\) 0x0" "print charap, not associated" +gdb_test "print *charap" "Cannot access memory at address 0x0" "print *charap, not associated" +gdb_test "print intp" "= \\(PTR TO -> \\( $int\\)\\) 0x0" "print intp, not associated" +gdb_test "print *intp" "Cannot access memory at address 0x0" "print *intp, not associated" +set test "print intap, not associated" +gdb_test_multiple "print intap" $test { + -re " = \\(PTR TO -> \\( $int \\(:,:\\)\\)\\) <not associated>\r\n$gdb_prompt $" { + pass $test + } + -re " = <not associated>\r\n$gdb_prompt $" { + pass $test + } +} +gdb_test "print realp" "= \\(PTR TO -> \\( $real\\)\\) 0x0" "print realp, not associated" +gdb_test "print *realp" "Cannot access memory at address 0x0" "print *realp, not associated" +gdb_test "print \$my_var = intp" "= \\(PTR TO -> \\( $int\\)\\) 0x0" +set test "print cyclicp1, not associated" +gdb_test_multiple "print cyclicp1" $test { + -re "= \\( i = -?\\d+, p = 0x0 \\)\r\n$gdb_prompt $" { + pass $test + } + -re "= \\( i = -?\\d+, p = <not associated> \\)\r\n$gdb_prompt $" { + pass $test + } +} +set test "print cyclicp1%p, not associated" +gdb_test_multiple "print cyclicp1%p" $test { + -re "= \\(PTR TO -> \\( Type typewithpointer\\)\\) 0x0\r\n$gdb_prompt $" { + pass $test + } + -re "= \\(PTR TO -> \\( Type typewithpointer\\)\\) <not associated>\r\n$gdb_prompt $" { + pass $test + } +} + + +gdb_breakpoint [gdb_get_line_number "Before value assignment"] +gdb_continue_to_breakpoint "Before value assignment" +gdb_test "print *(twop)%ivla2" "= <not allocated>" + + +gdb_breakpoint [gdb_get_line_number "After value assignment"] +gdb_continue_to_breakpoint "After value assignment" +gdb_test "print logp" "= \\(PTR TO -> \\( $logical\\)\\) $hex\( <.*>\)?" +gdb_test "print *logp" "= \\.TRUE\\." +gdb_test "print comp" "= \\(PTR TO -> \\( $complex\\)\\) $hex\( <.*>\)?" +gdb_test "print *comp" "= \\(1,2\\)" +gdb_test "print charp" "= \\(PTR TO -> \\( character\\*1\\)\\) $hex\( <.*>\)?" +gdb_test "print *charp" "= 'a'" +gdb_test "print charap" "= \\(PTR TO -> \\( character\\*3\\)\\) $hex\( <.*>\)?" +gdb_test "print *charap" "= 'abc'" +gdb_test "print intp" "= \\(PTR TO -> \\( $int\\)\\) $hex\( <.*>\)?" +gdb_test "print *intp" "= 10" +set test_name "print intap, associated" +gdb_test_multiple "print intap" $test_name { + -re "= \\(\\( 1, 1, 3(, 1){7}\\) \\( 1(, 1){9}\\) \\)\r\n$gdb_prompt $" { + pass $test_name + } + -re "= \\(PTR TO -> \\( $int \\(10,2\\)\\)\\) $hex\( <.*>\)?\r\n$gdb_prompt $" { + gdb_test "print *intap" "= \\(\\( 1, 1, 3(, 1){7}\\) \\( 1(, 1){9}\\) \\)" + pass $test_name + } +} +set test_name "print intvlap, associated" +gdb_test_multiple "print intvlap" $test_name { + -re "= \\(2, 2, 2, 4(, 2){6}\\)\r\n$gdb_prompt $" { + pass $test_name + } + -re "= \\(PTR TO -> \\( $int \\(10\\)\\)\\) $hex\( <.*>\)?\r\n$gdb_prompt $" { + gdb_test "print *intvlap" "= \\(2, 2, 2, 4(, 2){6}\\)" + pass $test_name + } +} +gdb_test "print realp" "= \\(PTR TO -> \\( $real\\)\\) $hex\( <.*>\)?" +gdb_test "print *realp" "= 3\\.14000\\d+" +gdb_test "print arrayOfPtr(2)%p" "= \\(PTR TO -> \\( Type two\\)\\) $hex\( <.*>\)?" +gdb_test "print *(arrayOfPtr(2)%p)" "= \\( ivla1 = \\(11, 12, 13\\), ivla2 = \\(\\( 211, 221\\) \\( 212, 222\\) \\) \\)" +set test_name "print arrayOfPtr(3)%p" +gdb_test_multiple $test_name $test_name { + -re "= \\(PTR TO -> \\( Type two\\)\\) <not associated>\r\n$gdb_prompt $" { + pass $test_name + } + -re "= \\(PTR TO -> \\( Type two\\)\\) 0x0\r\n$gdb_prompt $" { + pass $test_name + } +} +set test_name "print *(arrayOfPtr(3)%p), associated" +gdb_test_multiple "print *(arrayOfPtr(3)%p)" $test_name { + -re "Cannot access memory at address 0x0\r\n$gdb_prompt $" { + pass $test_name + } + -re "Attempt to take contents of a not associated pointer.\r\n$gdb_prompt $" { + pass $test_name + } +} +gdb_test "print cyclicp1" "= \\( i = 1, p = $hex\( <.*>\)? \\)" +gdb_test "print cyclicp1%p" "= \\(PTR TO -> \\( Type typewithpointer\\)\\) $hex\( <.*>\)?" +gdb_test "print *((integer*) &inta + 2)" "= 3" "print temporary pointer, array" +gdb_test "print *((integer*) &intvla + 3)" "= 4" "print temporary pointer, allocated vla" +gdb_test "print \$pc" "= \\(PTR TO -> \\( void \\(\\) \\(\\)\\)\\) $hex <pointers\\+\\d+>" "Print program counter" diff --git a/gdb/testsuite/gdb.fortran/pointers.f90 b/gdb/testsuite/gdb.fortran/pointers.f90 --- a/gdb/testsuite/gdb.fortran/pointers.f90 +++ b/gdb/testsuite/gdb.fortran/pointers.f90 @@ -20,21 +20,34 @@ program pointers integer, allocatable :: ivla2 (:, :) end type two + type :: typeWithPointer + integer i + type(typeWithPointer), pointer:: p + end type typeWithPointer + + type :: twoPtr + type (two), pointer :: p + end type twoPtr + logical, target :: logv complex, target :: comv character, target :: charv character (len=3), target :: chara integer, target :: intv integer, target, dimension (10,2) :: inta - real, target :: realv - type(two), target :: twov + integer, target, allocatable, dimension (:) :: intvla + real, target :: realv + type(two), target :: twov + type(twoPtr) :: arrayOfPtr (3) + type(typeWithPointer), target:: cyclicp1,cyclicp2 logical, pointer :: logp complex, pointer :: comp - character, pointer :: charp - character (len=3), pointer :: charap + character, pointer:: charp + character (len=3), pointer:: charap integer, pointer :: intp integer, pointer, dimension (:,:) :: intap + integer, pointer, dimension (:) :: intvlap real, pointer :: realp type(two), pointer :: twop @@ -44,8 +57,14 @@ program pointers nullify (charap) nullify (intp) nullify (intap) + nullify (intvlap) nullify (realp) nullify (twop) + nullify (arrayOfPtr(1)%p) + nullify (arrayOfPtr(2)%p) + nullify (arrayOfPtr(3)%p) + nullify (cyclicp1%p) + nullify (cyclicp2%p) logp => logv ! Before pointer assignment comp => comv @@ -53,8 +72,14 @@ program pointers charap => chara intp => intv intap => inta + intvlap => intvla realp => realv twop => twov + arrayOfPtr(2)%p => twov + cyclicp1%i = 1 + cyclicp1%p => cyclicp2 + cyclicp2%i = 2 + cyclicp2%p => cyclicp1 logv = associated(logp) ! Before value assignment comv = cmplx(1,2) @@ -63,6 +88,10 @@ program pointers intv = 10 inta(:,:) = 1 inta(3,1) = 3 + allocate (intvla(10)) + intvla(:) = 2 + intvla(4) = 4 + intvlap => intvla realv = 3.14 allocate (twov%ivla1(3)) diff --git a/gdb/testsuite/gdb.fortran/print_type.exp b/gdb/testsuite/gdb.fortran/print_type.exp --- a/gdb/testsuite/gdb.fortran/print_type.exp +++ b/gdb/testsuite/gdb.fortran/print_type.exp @@ -1,5 +1,6 @@ # Copyright 2019-2020 Free Software Foundation, Inc. # + # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 3 of the License, or @@ -42,7 +43,7 @@ set complex [fortran_complex4] # matches the string TYPE. proc check_pointer_type { var_name type } { gdb_test "ptype ${var_name}" \ - "type = PTR TO -> \\( ${type} \\)" + "type = PTR TO -> \\( ${type}\\)" } gdb_breakpoint [gdb_get_line_number "Before pointer assignment"] @@ -87,7 +88,8 @@ gdb_test "ptype twop" \ [multi_line "type = PTR TO -> \\( Type two" \ " $int, allocatable :: ivla1\\(:\\)" \ " $int, allocatable :: ivla2\\(:,:\\)" \ - "End Type two \\)"] + "End Type two\\)"] + gdb_breakpoint [gdb_get_line_number "After value assignment"] gdb_continue_to_breakpoint "After value assignment" @@ -99,11 +101,11 @@ gdb_test "ptype intv" "type = $int" gdb_test "ptype inta" "type = $int \\(10,2\\)" gdb_test "ptype realv" "type = $real" -gdb_test "ptype logp" "type = PTR TO -> \\( $logical \\)" -gdb_test "ptype comp" "type = PTR TO -> \\( $complex \\)" -gdb_test "ptype charp" "type = PTR TO -> \\( character\\*1 \\)" -gdb_test "ptype charap" "type = PTR TO -> \\( character\\*3 \\)" -gdb_test "ptype intp" "type = PTR TO -> \\( $int \\)" +gdb_test "ptype logp" "type = PTR TO -> \\( $logical\\)" +gdb_test "ptype comp" "type = PTR TO -> \\( $complex\\)" +gdb_test "ptype charp" "type = PTR TO -> \\( character\\*1\\)" +gdb_test "ptype charap" "type = PTR TO -> \\( character\\*3\\)" +gdb_test "ptype intp" "type = PTR TO -> \\( $int\\)" set test "ptype intap" gdb_test_multiple $test $test { -re "type = $int \\(10,2\\)\r\n$gdb_prompt $" { @@ -113,4 +115,4 @@ gdb_test_multiple $test $test { pass $test } } -gdb_test "ptype realp" "type = PTR TO -> \\( $real \\)" +gdb_test "ptype realp" "type = PTR TO -> \\( $real\\)" diff --git a/gdb/testsuite/gdb.fortran/vla-strings.exp b/gdb/testsuite/gdb.fortran/vla-strings.exp new file mode 100644 --- /dev/null +++ b/gdb/testsuite/gdb.fortran/vla-strings.exp @@ -0,0 +1,103 @@ +# Copyright 2016 Free Software Foundation, Inc. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +standard_testfile ".f90" + +if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile} \ + {debug f90 quiet}] } { + return -1 +} + +# check that all fortran standard datatypes will be +# handled correctly when using as VLA's + +if ![runto_main] { + untested "could not run to main" + return -1 +} + +gdb_breakpoint [gdb_get_line_number "var_char-allocated-1"] +gdb_continue_to_breakpoint "var_char-allocated-1" +set test "whatis var_char first time" +gdb_test_multiple "whatis var_char" $test { + -re "type = PTR TO -> \\( character\\*10\\)\r\n$gdb_prompt $" { + pass $test + } + -re "type = character\\*10\r\n$gdb_prompt $" { + pass $test + } +} +set test "ptype var_char first time" +gdb_test_multiple "ptype var_char" $test { + -re "type = PTR TO -> \\( character\\*10\\)\r\n$gdb_prompt $" { + pass $test + } + -re "type = character\\*10\r\n$gdb_prompt $" { + pass $test + } +} + + +gdb_test "next" "\\d+.*var_char = 'foo'.*" \ + "next to allocation status of var_char" +gdb_test "print l" " = \\.TRUE\\." "print allocation status first time" + + +gdb_breakpoint [gdb_get_line_number "var_char-filled-1"] +gdb_continue_to_breakpoint "var_char-filled-1" +set test "print var_char, var_char-filled-1" +gdb_test_multiple "print var_char" $test { + -re "= \\(PTR TO -> \\( character\\*3\\)\\) $hex\r\n$gdb_prompt $" { + gdb_test "print *var_char" "= 'foo'" "print *var_char, var_char-filled-1" + pass $test + } + -re "= 'foo'\r\n$gdb_prompt $" { + pass $test + } +} +set test "ptype var_char, var_char-filled-1" +gdb_test_multiple "ptype var_char" $test { + -re "type = PTR TO -> \\( character\\*3\\)\r\n$gdb_prompt $" { + pass $test + } + -re "type = character\\*3\r\n$gdb_prompt $" { + pass $test + } +} +gdb_test "print var_char(1)" " = 102 'f'" "print var_char(1)" +gdb_test "print var_char(3)" " = 111 'o'" "print var_char(3)" + + +gdb_breakpoint [gdb_get_line_number "var_char-filled-2"] +gdb_continue_to_breakpoint "var_char-filled-2" +set test "print var_char, var_char-filled-2" +gdb_test_multiple "print var_char" $test { + -re "= \\(PTR TO -> \\( character\\*6\\)\\) $hex\r\n$gdb_prompt $" { + gdb_test "print *var_char" "= 'foobar'" "print *var_char, var_char-filled-2" + pass $test + } + -re "= 'foobar'\r\n$gdb_prompt $" { + pass $test + } +} +set test "ptype var_char, var_char-filled-2" +gdb_test_multiple "ptype var_char" $test { + -re "type = PTR TO -> \\( character\\*6\\)\r\n$gdb_prompt $" { + pass $test + } + -re "type = character\\*6\r\n$gdb_prompt $" { + pass $test + } +} diff --git a/gdb/testsuite/gdb.fortran/vla-strings.f90 b/gdb/testsuite/gdb.fortran/vla-strings.f90 new file mode 100644 --- /dev/null +++ b/gdb/testsuite/gdb.fortran/vla-strings.f90 @@ -0,0 +1,39 @@ +! Copyright 2016 Free Software Foundation, Inc. +! +! This program is free software; you can redistribute it and/or modify +! it under the terms of the GNU General Public License as published by +! the Free Software Foundation; either version 3 of the License, or +! (at your option) any later version. +! +! This program is distributed in the hope that it will be useful, +! but WITHOUT ANY WARRANTY; without even the implied warranty of +! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +! GNU General Public License for more details. +! +! You should have received a copy of the GNU General Public License +! along with this program. If not, see <http://www.gnu.org/licenses/>. + +program vla_strings + character(len=:), target, allocatable :: var_char + character(len=:), pointer :: var_char_p + logical :: l + + allocate(character(len=10) :: var_char) + l = allocated(var_char) ! var_char-allocated-1 + var_char = 'foo' + deallocate(var_char) ! var_char-filled-1 + l = allocated(var_char) ! var_char-deallocated + allocate(character(len=42) :: var_char) + l = allocated(var_char) + var_char = 'foobar' + var_char = '' ! var_char-filled-2 + var_char = 'bar' ! var_char-empty + deallocate(var_char) + allocate(character(len=21) :: var_char) + l = allocated(var_char) ! var_char-allocated-3 + var_char = 'johndoe' + var_char_p => var_char + l = associated(var_char_p) ! var_char_p-associated + var_char_p => null() + l = associated(var_char_p) ! var_char_p-not-associated +end program vla_strings diff --git a/gdb/testsuite/gdb.fortran/vla-value.exp b/gdb/testsuite/gdb.fortran/vla-value.exp --- a/gdb/testsuite/gdb.fortran/vla-value.exp +++ b/gdb/testsuite/gdb.fortran/vla-value.exp @@ -37,7 +37,7 @@ gdb_breakpoint [gdb_get_line_number "vla1-init"] gdb_continue_to_breakpoint "vla1-init" gdb_test "print vla1" " = <not allocated>" "print non-allocated vla1" gdb_test "print &vla1" \ - " = \\\(PTR TO -> \\\( $real, allocatable \\\(:,:,:\\\) \\\)\\\) $hex" \ + " = \\\(PTR TO -> \\\( $real, allocatable \\\(:,:,:\\\)\\\)\\\) $hex" \ "print non-allocated &vla1" gdb_test "print vla1(1,1,1)" "no such vector element \\\(vector not allocated\\\)" \ "print member in non-allocated vla1 (1)" @@ -58,7 +58,7 @@ with_timeout_factor 15 { "step over value assignment of vla1" } gdb_test "print &vla1" \ - " = \\\(PTR TO -> \\\( $real, allocatable \\\(10,10,10\\\) \\\)\\\) $hex" \ + " = \\\(PTR TO -> \\\( $real, allocatable \\\(10,10,10\\\)\\\)\\\) $hex" \ "print allocated &vla1" gdb_test "print vla1(3, 6, 9)" " = 1311" "print allocated vla1(3,6,9)" gdb_test "print vla1(1, 3, 8)" " = 1311" "print allocated vla1(1,3,8)" @@ -78,7 +78,7 @@ gdb_test "print vla1(9, 9, 9)" " = 999" \ # Try to access values in undefined pointer to VLA (dangling) gdb_test "print pvla" " = <not associated>" "print undefined pvla" gdb_test "print &pvla" \ - " = \\\(PTR TO -> \\\( $real \\\(:,:,:\\\) \\\)\\\) $hex" \ + " = \\\(PTR TO -> \\\( $real \\\(:,:,:\\\)\\\)\\\) $hex" \ "print non-associated &pvla" gdb_test "print pvla(1, 3, 8)" "no such vector element \\\(vector not associated\\\)" \ "print undefined pvla(1,3,8)" @@ -87,7 +87,7 @@ gdb_test "print pvla(1, 3, 8)" "no such vector element \\\(vector not associated gdb_breakpoint [gdb_get_line_number "pvla-associated"] gdb_continue_to_breakpoint "pvla-associated" gdb_test "print &pvla" \ - " = \\\(PTR TO -> \\\( $real \\\(10,10,10\\\) \\\)\\\) $hex" \ + " = \\\(PTR TO -> \\\( $real \\\(10,10,10\\\)\\\)\\\) $hex" \ "print associated &pvla" gdb_test "print pvla(3, 6, 9)" " = 42" "print associated pvla(3,6,9)" gdb_test "print pvla(1, 3, 8)" " = 1001" "print associated pvla(1,3,8)" diff --git a/gdb/typeprint.c b/gdb/typeprint.c --- a/gdb/typeprint.c +++ b/gdb/typeprint.c @@ -565,6 +565,25 @@ whatis_exp (const char *exp, int show) printf_filtered (" */\n"); } + /* Resolve any dynamic target type, as we might print + additional information about the target. + For example, in Fortran and C we are printing the dimension of the + dynamic array the pointer is pointing to. */ + if (type->code () == TYPE_CODE_PTR + && is_dynamic_type (type) == 1) + { + CORE_ADDR addr; + if (NULL != TYPE_DATA_LOCATION (TYPE_TARGET_TYPE(type))) + addr = value_address (val); + else + addr = value_as_address (val); + + if (addr != 0 + && type_not_associated (type) == 0) + TYPE_TARGET_TYPE (type) = resolve_dynamic_type (TYPE_TARGET_TYPE (type), + {}, addr); + } + LA_PRINT_TYPE (type, "", gdb_stdout, show, 0, &flags); printf_filtered ("\n"); } diff --git a/gdb/valops.c b/gdb/valops.c --- a/gdb/valops.c +++ b/gdb/valops.c @@ -1553,6 +1553,19 @@ value_ind (struct value *arg1) if (base_type->code () == TYPE_CODE_PTR) { struct type *enc_type; + CORE_ADDR addr; + + if (type_not_associated (base_type)) + error (_("Attempt to take contents of a not associated pointer.")); + + if (NULL != TYPE_DATA_LOCATION (TYPE_TARGET_TYPE (base_type))) + addr = value_address (arg1); + else + addr = value_as_address (arg1); + + if (addr != 0) + TYPE_TARGET_TYPE (base_type) = + resolve_dynamic_type (TYPE_TARGET_TYPE (base_type), {}, addr); /* We may be pointing to something embedded in a larger object. Get the real type of the enclosing object. */ @@ -1570,8 +1583,7 @@ value_ind (struct value *arg1) else { /* Retrieve the enclosing object pointed to. */ - base_addr = (value_as_address (arg1) - - value_pointed_to_offset (arg1)); + base_addr = (addr - value_pointed_to_offset (arg1)); } arg2 = value_at_lazy (enc_type, base_addr); enc_type = value_type (arg2); diff --git a/gdb/valprint.c b/gdb/valprint.c --- a/gdb/valprint.c +++ b/gdb/valprint.c @@ -1046,12 +1046,6 @@ value_check_printable (struct value *val, struct ui_file *stream, return 0; } - if (type_not_associated (value_type (val))) - { - val_print_not_associated (stream); - return 0; - } - if (type_not_allocated (value_type (val))) { val_print_not_allocated (stream);
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