diff -up gv-3.7.4/src/zoom.c.bug1071238 gv-3.7.4/src/zoom.c

--- gv-3.7.4/src/zoom.c.bug1071238	2012-03-29 10:03:50.000000000 -0600

+++ gv-3.7.4/src/zoom.c	2014-03-03 09:13:09.724941964 -0700

@@ -104,12 +104,12 @@ zoom_createZoom(Widget w _GL_UNUSED, XtP

     BEGINMESSAGE(zoom_createZoom)

-    if (!(gv_psfile != NULL || (gv_gs_arguments && *gv_gs_arguments))) {

+    if (!gv_psfile) {

        INFMESSAGE(no file) ENDMESSAGE(zoom_createZoom)

        return;

     }

-    if (strcmp(gv_filename, "-")) {

+    if (gv_filename != NULL && strcmp(gv_filename, "-")) {

        stat(gv_filename, &sbuf);

        if (mtime != sbuf.st_mtime) {

 	  INFMESSAGE1(file has changed) ENDMESSAGE1(zoom_createZoom)return;