maint: update copyright

[gnulib.git] / lib / strdup.c

diff --git a/lib/strdup.c b/lib/strdup.c
index 4f6bb83..cc1959f 100644 (file)
--- a/lib/strdup.c
+++ b/lib/strdup.c
@@ -1,5 +1,7 @@
-/* strdup.c -- return a newly allocated copy of a string
-   Copyright (C) 1990, 1998 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1996-1998, 2002-2004, 2006-2007, 2009-2014 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
@@ -11,33 +13,42 @@
    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.  */
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, see <http://www.gnu.org/licenses/>.  */
 
-#if HAVE_CONFIG_H
+#ifndef _LIBC
 # include <config.h>
 #endif
 
-#ifdef STDC_HEADERS
-# include <string.h>
-# include <stdlib.h>
-#else
-char *malloc ();
-char *strcpy ();
+/* Get specification.  */
+#include <string.h>
+
+#include <stdlib.h>
+
+#undef __strdup
+#ifdef _LIBC
+# undef strdup
 #endif
 
-/* Return a newly allocated copy of STR,
-   or 0 if out of memory. */
+#ifndef weak_alias
+# define __strdup strdup
+#endif
 
+/* Duplicate S, returning an identical malloc'd string.  */
 char *
-strdup (str)
-     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