Mercurial > gnulib
view lib/memchr2.h @ 40215:88b18d82fa61
crypto/des: Fix undefined behaviour.
* lib/des.c (READ_64BIT_DATA): Cast bytes to 'unsigned int', to avoid
shift operations on 'int'.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 09 Mar 2019 22:21:25 +0100 |
parents | b06060465f09 |
children |
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/* Scan memory for the first of two bytes. Copyright (C) 2008-2019 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 <https://www.gnu.org/licenses/>. */ #include <stddef.h> #ifdef __cplusplus extern "C" { #endif /* Return the first address of either C1 or C2 (treated as unsigned char) that occurs within N bytes of the memory region S. If neither byte appears, return NULL. */ extern void *memchr2 (void const *s, int c1, int c2, size_t n) _GL_ATTRIBUTE_PURE; #ifdef __cplusplus } #endif