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0f4254311e
It also cleanups the multiple inclusion by leaving the ifunc implementation to undef the weak_alias and libc_hidden_def. Co-authored-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
/* Find the length of STRING, but scan at most MAXLEN characters.
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Copyright (C) 1991-2023 Free Software Foundation, Inc.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, see <https://www.gnu.org/licenses/>. */
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#include <string.h>
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/* Find the length of S, but scan at most MAXLEN characters. If no
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'\0' terminator is found in that many characters, return MAXLEN. */
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#ifdef STRNLEN
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# define __strnlen STRNLEN
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#endif
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size_t
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__strnlen (const char *str, size_t maxlen)
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{
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const char *found = memchr (str, '\0', maxlen);
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return found ? found - str : maxlen;
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}
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#ifndef STRNLEN
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weak_alias (__strnlen, strnlen)
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libc_hidden_def (__strnlen)
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libc_hidden_def (strnlen)
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#endif
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