[thirdparty/glibc.git] / string / strdup.c

/* Copyright (C) 1991-2025 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library 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.

   The GNU C Library 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 the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#if defined _LIBC || defined  STDC_HEADERS
# include <stdlib.h>
# include <string.h>
#else
char *malloc ();
char *memcpy ();
#endif

#undef __strdup
#undef strdup

#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
Commit	Line	Data
	1	/* Copyright (C) 1991-2025 Free Software Foundation, Inc.
	2	This file is part of the GNU C Library.
	3
	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.
	8
	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.
	13
	14	You should have received a copy of the GNU Lesser General Public
	15	License along with the GNU C Library; if not, see
	16	<https://www.gnu.org/licenses/>. */
	17
	18	#ifdef HAVE_CONFIG_H
	19	#include <config.h>
	20	#endif
	21
	22	#if defined _LIBC \|\| defined STDC_HEADERS
	23	# include <stdlib.h>
	24	# include <string.h>
	25	#else
	26	char *malloc ();
	27	char *memcpy ();
	28	#endif
	29
	30	#undef __strdup
	31	#undef strdup
	32
	33	#ifndef weak_alias
	34	# define __strdup strdup
	35	#endif
	36
	37	/* Duplicate S, returning an identical malloc'd string. */
	38	char *
	39	__strdup (const char *s)
	40	{
	41	size_t len = strlen (s) + 1;
	42	void *new = malloc (len);
	43
	44	if (new == NULL)
	45	return NULL;
	46
	47	return (char *) memcpy (new, s, len);
	48	}
	49	#ifdef libc_hidden_def
	50	libc_hidden_def (__strdup)
	51	#endif
	52	#ifdef weak_alias
	53	weak_alias (__strdup, strdup)
	54	#endif