strdup.c

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/* Copyright (C) 1991, 1996-1998, 2002-2004, 2006-2007, 2009-2011 Free Software
   Foundation, Inc.
 
   This file is part of the GNU C Library.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU Lesser General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.
 
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU Lesser General Public License for more details.
 
   You should have received a copy of the GNU Lesser General Public License along
   with this program; if not, write to the Free Software Foundation,
   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
 
#ifndef _LIBC
# include <config.h>
#endif
 
/* Get specification.  */
#include <string.h>
 
#include <stdlib.h>
 
#undef __strdup
#ifdef _LIBC
# undef strdup
#endif
 
#ifndef weak_alias
# define __strdup strdup
#endif
 
/* Duplicate S, returning an identical malloc'd string.  */
char *
__strdup (const char *s)
{
  size_t len = strlen (s) + 1;
  void *new = malloc (len);
 
  if (new == NULL)
    return NULL;
 
  return (char *) memcpy (new, s, len);
}
#ifdef libc_hidden_def
libc_hidden_def (__strdup)
#endif
#ifdef weak_alias
weak_alias (__strdup, strdup)
#endif