rm_/lib/strdup.c

/* Copyright (C) 1991, 1996-1998, 2002-2004, 2006-2007, 2009-2022 Free Software
   Foundation, Inc.

   This file is part of the GNU C Library.

   This file 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 2.1 of the
   License, or (at your option) any later version.

   This file 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, see <https://www.gnu.org/licenses/>.  */

#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