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(strdup): Merge in changes from gnulib; mainly to

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use memcpy rather than strcpy.
This commit is contained in:
Jim Meyering
2002-11-21 13:31:03 +00:00
parent 1a1ce790d8
commit cae292f583
1 changed files with 38 additions and 23 deletions
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lib/strdup.c
+38 -23
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@@ -1,42 +1,57 @@
/* strdup.c -- return a newly allocated copy of a string
Copyright (C) 1990, 1998 Free Software Foundation, Inc.
/* Copyright (C) 1991, 1996, 1997, 1998, 2002 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 General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
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.
This program is distributed in the hope that it will be useful,
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 General Public License for more details.
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 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. */
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#if HAVE_CONFIG_H
# include <config.h>
#endif
#ifdef STDC_HEADERS
# include <string.h>
#if defined _LIBC || defined STDC_HEADERS
# include <stdlib.h>
# include <string.h>
#else
char *malloc ();
char *strcpy ();
char *memcpy ();
#endif
/* Return a newly allocated copy of STR,
or 0 if out of memory. */
#undef __strdup
#undef strdup
#ifndef weak_alias
# define __strdup strdup
#endif
/* Duplicate S, returning an identical malloc'd string.
Return NULL if out of memory. */
char *
strdup (const char *str)
__strdup (const char *s)
{
char *newstr;
size_t len = strlen (s) + 1;
void *new = malloc (len);
newstr = (char *) malloc (strlen (str) + 1);
if (newstr)
strcpy (newstr, str);
return newstr;
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