File 0659-xmerl-replace-size-1-by-xxx_size-1.patch of Package erlang

Overview Repositories Revisions Requests Users Attributes Meta

File 0659-xmerl-replace-size-1-by-xxx_size-1.patch of Package erlang (Revision ef76582d9ec8723017fd1825f278d2c9)

Currently displaying revision ef76582d9ec8723017fd1825f278d2c9 , Show latest

From f0b6bebfca171b1ac6bee855b4880e906723cea0 Mon Sep 17 00:00:00 2001
From: Kiko Fernandez-Reyes <kiko@erlang.org>
Date: Fri, 3 Feb 2023 11:07:13 +0100
Subject: [PATCH] xmerl: replace size/1 by xxx_size/1

The <c>size/1</c> BIF is not optimized by the JIT, and its use can
result in worse types for Dialyzer.

When one knows that the value being tested must be a tuple,
<c>tuple_size/1</c> should always be preferred.

When one knows that the value being tested must be a binary,
<c>byte_size/1</c> should be preferred. However, <c>byte_size/1</c> also
accepts a bitstring (rounding up size to a whole number of bytes), so
one must make sure that the call to <c>byte_size/</c> is preceded by a
call to <c>is_binary/1</c> to ensure that bitstrings are rejected. Note
that the compiler removes redundant calls to <c>is_binary/1</c>, so if
one is not sure whether previous code had made sure that the argument is
a binary, it does not harm to add an <c>is_binary/1</c> test immediately
before the call to <c>byte_size/1</c>.
---
 lib/xmerl/src/xmerl_eventp.erl | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/lib/xmerl/src/xmerl_eventp.erl b/lib/xmerl/src/xmerl_eventp.erl
index 8d7ea25e24..537bd64351 100644
--- a/lib/xmerl/src/xmerl_eventp.erl
+++ b/lib/xmerl/src/xmerl_eventp.erl
@@ -295,8 +295,8 @@ read_chunk(Fd, _Fname, _Sofar) ->
 
 -ifndef(no_bitsyntax).
 
-find_good_split(Bin, F, Exception, Fd, Fname, T, S) ->
-    find_good_split(size(Bin)-1, Bin, F, Exception, Fd, Fname, T, S).
+find_good_split(Bin, F, Exception, Fd, Fname, T, S) when is_binary(Bin) ->
+    find_good_split(byte_size(Bin)-1, Bin, F, Exception, Fd, Fname, T, S).
 
 find_good_split(0, B, F, Exception, Fd, Fname, T, S) ->
     cont2(F, Exception, B, Fd, Fname, T, S);
@@ -312,8 +312,8 @@ find_good_split(Size, B, F, Exception, Fd, Fname, T, S) ->
 
 -else.
 
-find_good_split(Bin, F, Exception, Fd, Fname, T, S) ->
-    find_good_split(size(Bin), Bin, F, Exception, Fd, Fname, T, S).
+find_good_split(Bin, F, Exception, Fd, Fname, T, S) when is_binary(Bin) ->
+    find_good_split(byte_size(Bin), Bin, F, Exception, Fd, Fname, T, S).
 
 find_good_split(0, B, F, Exception, Fd, Fname, T, S) ->
     cont2(F, Exception, B, Fd, Fname, T, S);
-- 
2.35.3

Places

File 0659-xmerl-replace-size-1-by-xxx_size-1.patch of Package erlang (Revision ef76582d9ec8723017fd1825f278d2c9)

Places