--- /home/gpc/p/gpc.c.orig	Tue Jun 10 13:45:46 2003
+++ /home/gpc/p/gpc.c	Tue Sep 30 20:29:38 2003
@@ -7978,9 +7978,10 @@
     }
   if (!new_argc)
     return;
-  argv = (const char **) xmalloc ((argc + new_argc) * sizeof (const char *));
+  argv = (const char **) xmalloc ((argc + new_argc + 1) * sizeof (const char *));
   memcpy (argv, *argvp, argc * sizeof (const char *));
   memcpy (argv + argc, new_argv, new_argc * sizeof (const char *));
+  argv [argc + new_argc] = NULL;
   *argcp = argc + new_argc;
   *argvp = argv;
 }