- Add DEBUG option [1]

- Fix crash with some discs [1]
- Un-version LIB_DEPENDS

PR:	ports/169698 [1]
Submitted by:	Fabian Keil <fk@fabiankeil.de> [1]

1 files changed, 43 insertions, 0 deletions

diff --git a/multimedia/libdvdnav/files/patch-src-searching.c b/multimedia/libdvdnav/files/patch-src-searching.c
new file mode 100644
index 000000000000..0bb6b8cdb2ab
--- /dev/null
+++ b/multimedia/libdvdnav/files/patch-src-searching.c
@@ -0,0 +1,43 @@
+From 49c67ccf88c688e0e0e9e3b04f651b12c7d7f7f3 Mon Sep 17 00:00:00 2001
+From: Erik Hovland <erik@hovland.org>
+Date: Mon, 16 Apr 2012 14:56:43 -0700
+Subject: [PATCH] Check cell new row before using it to index into
+ cell_playback
+
+cellnr is used to index into cell_playback after subtracting
+one from it. If cellnr is 0, then it will index -1 in cell_playback
+which will seek out of boundary of cell_playback. This manifested into a
+segfault for some users as reported by this launchpad bug:
+https://bugs.launchpad.net/ubuntu/+source/libdvdnav/+bug/934471
+
+By checking cellnr and skipping the indexing if cellnr is equal to zero
+then we avoid the segfault. There might be a bigger issue w/ regard to
+retrieving a value of zero for cell new row, but this fix works for the
+reporter.
+
+Thanks goes to Sylvain Henry (hsyl20 AT gmail DOT com for both
+reporting the bug to launchpad and submitting a potential patch (even
+though we went w/ a different fix).
+---
+ src/searching.c |    6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/src/searching.c b/src/searching.c
+index 3649e9d..0b5f22a 100644
+--- src/searching.c
++++ src/searching.c
+@@ -640,7 +640,11 @@ uint32_t dvdnav_describe_title_chapters(dvdnav_t *this, int32_t title, uint64_t
+       goto fail;
+     }
+ 
+-    cellnr = pgc->program_map[ptt[i].pgn-1];
++    if ((cellnr = pgc->program_map[ptt[i].pgn-1]) == 0) {
++      printerr("Cell new row cannot be 0");
++      continue;
++    }
++
+     if(ptt[i].pgn < pgc->nr_of_programs)
+       endcellnr = pgc->program_map[ptt[i].pgn];
+     else
+-- 
+1.7.10.3