lib/strdup.c

   1 /* Copyright (C) 1991, 1996, 1997, 1998, 2002, 2003 Free Software
   2    Foundation, Inc.
   3
   4    This file is part of the GNU C Library.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2, or (at your option)
   9    any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License along
  17    with this program; if not, write to the Free Software Foundation,
  18    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 # include <config.h>
  22 #endif
  23
  24 #include <stdlib.h>
  25 #include <string.h>
  26
  27 #undef __strdup
  28 #undef strdup
  29
  30 #ifndef weak_alias
  31 # define __strdup strdup
  32 #endif
  33
  34 /* Duplicate S, returning an identical malloc'd string.  */
  35 char *
  36 __strdup (const char *s)
  37 {
  38   size_t len = strlen (s) + 1;
  39   void *new = malloc (len);
  40
  41   if (new == NULL)
  42     return NULL;
  43
  44   return (char *) memcpy (new, s, len);
  45 }
  46 #ifdef libc_hidden_def
  47 libc_hidden_def (__strdup)
  48 #endif
  49 #ifdef weak_alias
  50 weak_alias (__strdup, strdup)
  51 #endif