| 1 | /* Copyright (C) 1991-2024 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, see |
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| 16 | <https://www.gnu.org/licenses/>. */ |
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| 17 | |
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| 18 | #include <string.h> |
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| 19 | |
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| 20 | #undef strchr |
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| 21 | #undef index |
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| 22 | |
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| 23 | #ifdef STRCHR |
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| 24 | # define strchr STRCHR |
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| 25 | #endif |
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| 26 | |
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| 27 | /* Find the first occurrence of C in S. */ |
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| 28 | char * |
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| 29 | strchr (const char *s, int c_in) |
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| 30 | { |
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| 31 | char *r = __strchrnul (str: s, c_in); |
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| 32 | return (*(unsigned char *)r == (unsigned char)c_in) ? r : NULL; |
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| 33 | } |
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| 34 | #ifndef STRCHR |
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| 35 | weak_alias (strchr, index) |
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| 36 | libc_hidden_builtin_def (strchr) |
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| 37 | #endif |
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| 38 | |
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