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string/strnlen.c
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Paul Eggert
Update copyright dates with scripts/update-copyrights
02 янв 2026, 00:42
02 янв 2026, 00:42
66f3e92
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/* Find the length of STRING, but scan at most MAXLEN characters. Copyright (C) 1991-2026 Free Software Foundation, Inc. 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; see the file COPYING.LIB. If not, see <https://www.gnu.org/licenses/>. */ #include <string.h> /* Find the length of S, but scan at most MAXLEN characters. If no '\0' terminator is found in that many characters, return MAXLEN. */ #ifdef STRNLEN # define __strnlen STRNLEN #endif size_t __strnlen (const char *str, size_t maxlen) { const char *found = memchr (str, '\0', maxlen); return found ? found - str : maxlen; } #ifndef STRNLEN weak_alias (__strnlen, strnlen) libc_hidden_def (__strnlen) libc_hidden_def (strnlen) #endif