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lib/util/memrchr.c
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Todd C. Miller
Remove Open Source PVS-Studio comments
28 сен 2025, 18:40
28 сен 2025, 18:40
2a33699
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/* * SPDX-License-Identifier: ISC * * Copyright (c) 2007, 2010-2014 * Todd C. Miller <Todd.Miller@sudo.ws> * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <config.h> #ifndef HAVE_MEMRCHR #include <sys/types.h> #include <sudo_compat.h> /* * Reverse memchr() * Find the last occurrence of 'c' in the buffer 's' of size 'n'. */ void * sudo_memrchr(const void *s, int c, size_t n) { const unsigned char *cp; if (n != 0) { cp = (unsigned char *)s + n; do { if (*(--cp) == (unsigned char)c) return (void *)cp; } while (--n != 0); } return (void *)0; } #endif /* HAVE_MEMRCHR */