.
[glibc/history.git] / string / strdup.c
blob559df60e29b2220ff2378ac5e11d6b1e97d725c6
1 /* Copyright (C) 1991, 1996, 1997, 1998, 2002 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17 02111-1307 USA. */
19 #ifdef HAVE_CONFIG_H
20 #include <config.h>
21 #endif
23 #if defined _LIBC || defined STDC_HEADERS
24 # include <stdlib.h>
25 # include <string.h>
26 #else
27 char *malloc ();
28 char *memcpy ();
29 #endif
31 #undef __strdup
32 #undef strdup
34 #ifndef weak_alias
35 # define __strdup strdup
36 #endif
38 /* Duplicate S, returning an identical malloc'd string. */
39 char *
40 __strdup (const char *s)
42 size_t len = strlen (s) + 1;
43 void *new = malloc (len);
45 if (new == NULL)
46 return NULL;
48 return (char *) memcpy (new, s, len);
50 #ifdef libc_hidden_def
51 libc_hidden_def (__strdup)
52 #endif
53 #ifdef weak_alias
54 weak_alias (__strdup, strdup)
55 #endif