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libc: fix memchr implementation

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The previous implementation could behave incorrectly because of the sign
extension of the char when compared to the int.

Change-Id: I397838b0ec87a6f1af6972d022a8c19a5184b447
Signed-off-by: Ambroise Vincent <ambroise.vincent@arm.com>
This commit is contained in:
Ambroise Vincent 2019-06-07 11:19:45 +01:00
parent de3ad4f096
commit 294062fabf
1 changed files with 2 additions and 2 deletions
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4
lib/libc/memchr.c
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@ -9,10 +9,10 @@
void *memchr(const void *src, int c, size_t len)
{
const char *s = src;
const unsigned char *s = src;
while (len--) {
if (*s == c)
if (*s == (unsigned char)c)
return (void *) s;
s++;
}