--- /usr/src/include/stdio.h	Mon Nov 11 11:51:08 2002
+++ /usr/src/include/stdio.h	Wed Mar  3 22:10:36 2004
@@ -49,7 +49,11 @@
 #endif
 
 #ifndef NULL
+#ifdef	__cplusplus
 #define	NULL	0
+#else
+#define	NULL	((void *)0)
+#endif
 #endif
 
 typedef	_BSD_OFF_T_	fpos_t;