| 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 | #ifndef STRNCAT |
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| 21 | # undef strncat |
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| 22 | # define STRNCAT strncat |
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| 23 | # define STRNCAT_PRIMARY |
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| 24 | #endif |
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| 25 | |
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| 26 | char * |
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| 27 | STRNCAT (char *s1, const char *s2, size_t n) |
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| 28 | { |
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| 29 | char *s = s1; |
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| 30 | |
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| 31 | /* Find the end of S1. */ |
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| 32 | s1 += strlen (s1); |
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| 33 | |
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| 34 | size_t ss = __strnlen (s2, n); |
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| 35 | |
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| 36 | s1[ss] = '\0'; |
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| 37 | memcpy (s1, s2, ss); |
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| 38 | |
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| 39 | return s; |
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| 40 | } |
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| 41 | #ifdef STRNCAT_PRIMARY |
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| 42 | strong_alias (STRNCAT, __strncat) |
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| 43 | libc_hidden_def (__strncat) |
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| 44 | #endif |
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| 45 | |
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