From d77bda56143b4c85b872ff7e0574070d024aff0b Mon Sep 17 00:00:00 2001
From: Fabian Keil <fk@fabiankeil.de>
Date: Sat, 8 Dec 2012 21:52:08 +0100
Subject: [PATCH] Let dvdnav_describe_title_chapters() skip PGCs with missing
 cells

Fixes segfaults with a rip of Ghost Protocol.
---
 src/searching.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/searching.c b/src/searching.c
index c044199..abfabfd 100644
--- a/src/searching.c
+++ b/src/searching.c
@@ -650,6 +650,10 @@ uint32_t dvdnav_describe_title_chapters(dvdnav_t *this, int32_t title, uint64_t
       printerr("Cell new row cannot be 0");
       continue;
     }
+    if (pgc->cell_playback == NULL) {
+      printerr("Cell missing");
+      continue;
+    }
 
     if(ptt[i].pgn < pgc->nr_of_programs)
       endcellnr = pgc->program_map[ptt[i].pgn];
-- 
1.8.0.2