1/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#ifdef HAVE_CONFIG_H
19#include <config.h>
20#endif
21
22#if defined _LIBC || defined STDC_HEADERS
23# include <stdlib.h>
24# include <string.h>
25#else
26char *malloc ();
27char *memcpy ();
28#endif
29
30#undef __strdup
31#undef strdup
32
33#ifndef weak_alias
34# define __strdup strdup
35#endif
36
37/* Duplicate S, returning an identical malloc'd string. */
38char *
39__strdup (const char *s)
40{
41 size_t len = strlen (s) + 1;
42 void *new = malloc (len);
43
44 if (new == NULL)
45 return NULL;
46
47 return (char *) memcpy (new, s, len);
48}
49#ifdef libc_hidden_def
50libc_hidden_def (__strdup)
51#endif
52#ifdef weak_alias
53weak_alias (__strdup, strdup)
54#endif
55