--- OLD/xc/programs/xwud/xwud.c	Thu Jan  1 00:00:00 1970
+++ NEW/xc/programs/xwud/xwud.c	Thu Jan  1 00:00:00 1970
@@ -40,7 +40,8 @@
 extern int errno;
 #endif
 
-extern char *malloc();
+#include <stdlib.h>
+
 unsigned Image_Size();
 Atom wm_protocols;
 Atom wm_delete_window;