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/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <string.h>
#include <libc-diag.h>
#ifndef RAWMEMCHR
# define RAWMEMCHR __rawmemchr
#endif
/* The pragmata should be nested inside RAWMEMCHR below, but that
triggers GCC PR 98512. */
DIAG_PUSH_NEEDS_COMMENT;
#if __GNUC_PREREQ (7, 0)
/* GCC 8 warns about the size passed to memchr being larger than
PTRDIFF_MAX; the use of SIZE_MAX is deliberate here. */
DIAG_IGNORE_NEEDS_COMMENT (8, "-Wstringop-overflow=");
#endif
#if __GNUC_PREREQ (11, 0)
/* Likewise GCC 11, with a different warning option. */
DIAG_IGNORE_NEEDS_COMMENT (11, "-Wstringop-overread");
#endif
/* Find the first occurrence of C in S. */
void *
RAWMEMCHR (const void *s, int c)
{
if ((unsigned char) c != '\0')
return memchr (s, c, (size_t)-1);
return (char *)s + strlen (s);
}
libc_hidden_def (__rawmemchr)
weak_alias (__rawmemchr, rawmemchr)
DIAG_POP_NEEDS_COMMENT;
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