[DVDnav-discuss] VLC segfault playing DVD

[dvdnav.cathy_mcdonald at spamgourmet.com]

Hi,

I've tracked down a bug which is causing VLC to crash when playing the 
Jack Reacher DVD. Is this the right forum for submitting a patch?

I checked out the source from 
svn://svn.mplayerhq.hu/dvdnav/trunk/libdvdnav but I've also seen a later 
version of the file I want to change at 
https://bazaar.launchpad.net/~ubuntu-branches/ubuntu/precise/libdvdnav/precise-proposed/view/head:/src/searching.c 
<https://bazaar.launchpad.net/%7Eubuntu-branches/ubuntu/precise/libdvdnav/precise-proposed/view/head:/src/searching.c> 
so I'm confused about which is the latest version of the code and which 
repository is the source of truth for a start.

I notice that the changes include a bunch of new sanity checks but not 
the one which fixes my issue.

The bug I found produces a segfault in the 
dvdnav_describe_title_chapters function in searching.c. It fails at the line
   cellnr = pgc->program_map[ptt[i].pgn-1];
because for some reason pgc->program_map is NULL. When I add a check for 
this condition like
     if(pgc->program_map == NULL) {
       printerr("Program map missing.");
       continue;
     }
the DVD will play.

Thanks,
Cathy