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strndup.c

/* Copyright (C) 1996, 1997, 1998, 2000, 2003 Free Software Foundation, Inc.

   NOTE: The canonical source of this file is maintained with the GNU C Library.
   Bugs can be reported to bug-glibc@prep.ai.mit.edu.

   This program is free software; you can redistribute it and/or modify it
   under the terms of the GNU 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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software Foundation,
   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include <stdlib.h>
#include <string.h>

#ifndef HAVE_DECL_STRNLEN
"this configure-time declaration test was not run"
#endif
#if !HAVE_DECL_STRNLEN
size_t strnlen ();
#endif

#undef __strndup
#undef strndup

#ifndef weak_alias
# define __strndup strndup
#endif

char *
__strndup (const char *s, size_t n)
{
  size_t len = strnlen (s, n);
  char *new = malloc (len + 1);

  if (new == NULL)
    return NULL;

  new[len] = '\0';
  return memcpy (new, s, len);
}
#ifdef weak_alias
weak_alias (__strndup, strndup)
#endif

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