--- ray/src/common/win_process.c	2005/09/19 11:30:10	3.6
+++ ray/src/common/win_process.c	2013/11/08 18:08:07	3.8
@@ -1,5 +1,5 @@
 #ifndef lint
-static char RCSid[]="$Id: win_process.c,v 3.6 2005/09/19 11:30:10 schorsch Exp $";
+static char RCSid[]="$Id: win_process.c,v 3.8 2013/11/08 18:08:07 greg Exp $";
 #endif
 /*
  * Routines to communicate with separate process via dual pipes.
@@ -185,7 +185,7 @@ error: /* cleanup */
 	if(hWrite) CloseHandle(hWrite);
 	if(hCurProc) CloseHandle(hCurProc);
 	proc->running = 0;
-	return 0;
+	return -1;
 	/* There... Are we happy now? */
 }
 
@@ -279,7 +279,12 @@ open_process(SUBPROC *proc, char *av[])
 	char *cmdpath;
 	char *cmdstr;
 
+	if (av == NULL || av[0] == NULL) {
+		fputs("Illegal call to open_process()!\n", stderr);
+		return -1;
+	}
 	proc->running = 0;
+	if (av == NULL) { return -1; }
 	cmdpath = getpath(av[0], getenv("PATH"), X_OK);
 	cmdstr = quoted_cmdline(cmdpath, av+1);
 	if (cmdstr == NULL) { return 0; }