[DVDnav-discuss] Bug report for specific DVD

[Michael Russo]

That did help and I was now able to compile libdvdnav with TRACE defined.
 I still ran vlc through gdb in order to get a backtrace.  There was a LOT
of tracing going on, and now the SIGSEGV occurred inside of printf()
because it was trying to print out the invalid memory address.   Hopefully
there's something here you can use to track down what's going on.  It's
likely some weird form of copy protection.


On Thu, Aug 14, 2014 at 10:50 PM, gnosygnu <gnosygnu at gmail.com> wrote:

> On Thu, Aug 14, 2014 at 9:01 AM, Michael Russo <greatquux at gmail.com>
> wrote:
>
> > I tried to define TRACE in vm.h (uncommenting the line) but I get a
> > message about an undefined constant FP_DOMAIN.  The compilation
> > succeeds without TRACE enabled.  I also can't find where this constant
> > is defined inside of libdvdnav.  Perhaps this is a simple oversight
> > related to all the cleanup work that took place in 5.0.0?
> >
> >
> Actually, it was probably related to an earlier commit. See:
>
> http://git.videolan.org/?p=libdvdnav.git;a=commitdiff;h=331781f98a8ea6842beee38539f6470c3e8a819c
>
> I updated the constants just now:
>
> http://git.videolan.org/?p=libdvdnav.git;a=commitdiff;h=da8a809a069c954872391acf7d6c97af1cdbc3a1
>
> I also cleaned up some compiler warnings in my earlier checkin that I
> didn't notice before. Sorry about that.
>
> http://git.videolan.org/?p=libdvdnav.git;a=commitdiff;h=03cb72be09295686cf1af0af5d8661ab8d35b537
>
> Hope this helps.
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>
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