[gv] Fix NULL access segfault (bug #1071238)

[Orion Poplawski]

commit 7d4541672bfd2b9a0c35e2b7fa4a76b4de1fb129
Author: Orion Poplawski <orion at nwra.com>
Date:   Fri Feb 28 12:14:54 2014 -0700

    Fix NULL access segfault (bug #1071238)

 gv-bug1071238.patch |   12 ++++++++++++
 gv.spec             |    9 ++++++++-
 2 files changed, 20 insertions(+), 1 deletions(-)
---
diff --git a/gv-bug1071238.patch b/gv-bug1071238.patch
new file mode 100644
index 0000000..39ff8e5
--- /dev/null
+++ b/gv-bug1071238.patch
@@ -0,0 +1,12 @@
+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	2014-02-28 09:17:20.522332906 -0700
+@@ -109,7 +109,7 @@ zoom_createZoom(Widget w _GL_UNUSED, XtP
+        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;
diff --git a/gv.spec b/gv.spec
index 6836fef..e0d4a9c 100644
--- a/gv.spec
+++ b/gv.spec
@@ -1,7 +1,7 @@
 Summary: A X front-end for the Ghostscript PostScript(TM) interpreter
 Name: gv
 Version: 3.7.4
-Release: 5%{?dist}
+Release: 6%{?dist}
 License: GPLv3+
 Group: Applications/Publishing
 Requires: ghostscript
@@ -19,6 +19,9 @@ Patch1:  gv-dat.patch
 Patch2:  gv-aarch64.patch
 # Fix bounding box recognition
 Patch3:  gv-bounding-box.patch
+# Fix NULL access segfault
+# https://bugzilla.redhat.com/show_bug.cgi?id=1071238
+Patch4:  gv-bug1071238.patch
 BuildRequires: /usr/bin/makeinfo
 BuildRequires: Xaw3d-devel
 %if 0%{?rhel} != 04
@@ -45,6 +48,7 @@ Gv can display PostScript and PDF documents on an X Window System.
 %patch1 -p1 -b .resdat
 %patch2 -p1 -b .aarch64
 %patch3 -p2 -b .bounding-box
+%patch4 -p1 -b .bug1071238
 
 
 %build
@@ -125,6 +129,9 @@ fi
 
 
 %changelog
+* Fri Feb 28 2014 Orion Poplawski <orion at cora.nwra.com> - 3.7.4-6
+- Fix NULL access segfault (bug #1071238)
+
 * Thu Jan 23 2014 Orion Poplawski <orion at cora.nwra.com> - 3.7.4-5
 - Fix bounding box recognition with CR line terminators