merge with 3.9i

[gnulib.git] / lib / putenv.c

diff --git a/lib/putenv.c b/lib/putenv.c
index 512878c..06e3254 100644 (file)
--- a/lib/putenv.c
+++ b/lib/putenv.c
@@ -1,36 +1,50 @@
 /* Copyright (C) 1991 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 Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+   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 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
-Library General Public License for more details.
+   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 Library General Public
-License along with the GNU C Library; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA.  */
+   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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
 
 #include <sys/types.h>
 #include <errno.h>
-#ifdef STDC_HEADERS
-#include <stdlib.h>
-#else
+#ifndef errno
 extern int errno;
 #endif
 
-#if defined(STDC_HEADERS) || defined(USG)
+/* Don't include stdlib.h for non-GNU C libraries because some of them
+   contain conflicting prototypes for getopt.
+   This needs to come after some library #include
+   to get __GNU_LIBRARY__ defined.  */
+#ifdef __GNU_LIBRARY__
+#include <stdlib.h>
+#else
+char *malloc ();
+#endif /* GNU C library.  */
+
+#if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
 #include <string.h>
-#define index strchr
-#define bcopy(s, d, n) memcpy((d), (s), (n))
-#else /* not (STDC_HEADERS or USG) */
+#else
 #include <strings.h>
-#endif /* STDC_HEADERS or USG */
+#ifndef strchr
+#define strchr index
+#endif
+#ifndef memcpy
+#define memcpy(d, s, n) bcopy((s), (d), (n))
+#endif
+#endif
 
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
@@ -40,10 +54,6 @@ extern int errno;
 #define NULL 0
 #endif
 
-#if !__STDC__
-#define const
-#endif
-
 extern char **environ;
 
 /* Put STRING, which is of the form "NAME=VALUE", in the environment.  */
@@ -51,7 +61,7 @@ int
 putenv (string)
      const char *string;
 {
-  char *name_end = index (string, '=');
+  char *name_end = strchr (string, '=');
   register size_t size;
   register char **ep;
 
@@ -86,7 +96,7 @@ putenv (string)
       char **new_environ = (char **) malloc ((size + 2) * sizeof (char *));
       if (new_environ == NULL)
        return -1;
-      (void) bcopy ((char *) environ, (char *) new_environ, size * sizeof (char *));
+      memcpy ((char *) new_environ, (char *) environ, size * sizeof (char *));
       new_environ[size] = (char *) string;
       new_environ[size + 1] = NULL;
       if (last_environ != NULL)