random.c (NULL): Don't redefine NULL if it is already defined.

1998-12-30  Michael Meissner  <meissner@cygnus.com>
        * random.c (NULL): Don't redefine NULL if it is already defined.

From-SVN: r24659

libiberty/ChangeLog

@@ -2,6 +2,10 @@ Wed Jan 13 14:16:36 1999  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* xstrdup.c (xstrdup): Switch from strcpy to memcpy for speed.
 
+1998-12-30  Michael Meissner  <meissner@cygnus.com>
+
+	* random.c (NULL): Don't redefine NULL if it is already defined.
+
 Tue Dec 22 09:43:35 1998  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* argv.c (buildargv): Cast the result of alloca in assignment.

libiberty/random.c

@@ -37,10 +37,14 @@
 
 #ifdef __STDC__
 #  define PTR void *
+#  ifndef NULL
 #    define NULL (void *) 0
+#  endif
 #else
 #  define PTR char *
-#  define NULL 0
+#  ifndef NULL
+#    define NULL (void *) 0
+#  endif
 #endif
 
 #endif