--- ray/src/common/win_process.c	2012/06/14 05:13:25	3.7
+++ ray/src/common/win_process.c	2014/02/12 00:15:40	3.9
@@ -1,5 +1,5 @@
 #ifndef lint
-static char RCSid[]="$Id: win_process.c,v 3.7 2012/06/14 05:13:25 greg Exp $";
+static char RCSid[]="$Id: win_process.c,v 3.9 2014/02/12 00:15:40 greg Exp $";
 #endif
 /*
  * Routines to communicate with separate process via dual pipes.
@@ -167,8 +167,8 @@ start_process(SUBPROC *proc, char *cmdstr)
 	CloseHandle(hFromChildWrite); hFromChildWrite = NULL;
 	CloseHandle(hToChildRead); hToChildRead = NULL;
 	/* get the file descriptors */
-	proc->r = _open_osfhandle((long)hRead, _O_RDONLY);
-	proc->w = _open_osfhandle((long)hWrite, _O_APPEND);
+	proc->r = _open_osfhandle((long)hRead, _O_RDONLY|_O_BINARY);
+	proc->w = _open_osfhandle((long)hWrite, _O_APPEND|_O_BINARY);
 	proc->pid = PInfo.dwProcessId;
 	proc->running = 1;
 	CloseHandle(hCurProc);
@@ -279,6 +279,10 @@ 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);