[vdr] Re: UPT-Error related with vdr-1.1.27-1.1.28-c.diff

[Klaus Schmidinger <Klaus.Schmidinger@cadsoft.de>]

Martin Holst wrote:
> 
> Klaus Schmidinger wrote:
> > Martin Holst wrote:
> > [...]
> > > As I can see in my log, the last entry is the (Switching to channel 30).
> > > I also added some printf-statements to the main-loop of vdr and it
> > > seems as this loop runs several times before the segmentation fault
> > > occurs. Any suggestions?
> >
> > Sounds like you're dereferencing a NULL pointer.
> > Maybe a backtrace in gdb will tell you where this happens.
> >
> > > I think the problem is, that there are some successive changes in the
> > > CAM-handling between 1.1.28 and 1.2.5. Maybe it is easier to undo the
> > > changes in vdr 1.1.28 and check if the problem is solved.
> >
> > Yes, that may be true.
> 
> Now I've undo the changes of the c-diff in vdr 1.1.28 and vd compiles
> without an error. But when I start vdr, I get the same segmentation
> fault. When I run "gdb --core=core" I get the following message:
> 
> Program terminated with signal 11, Segmentation fault.
> #0 0x0807d161 in ?? ()
> 
> A "Backtrace" shows several adresses #0-#5.
> Because I'm not familiar with gdb: what are the next steps to find out,
> in which code-fragment the problem occur?
> FYI: When I start vdr several times, I'll get the same list of adresses.

Did you compile VDR with debug information?
by default this is the case, so unless you are using modified
CXXFLAGS it should give you the names of the functions that are called.

Please post the result of a 'bt' command in gdb.

Klaus


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