Re: [Discuss-gnuradio] trellis_encoder_bb segfaults when inside hier_block

[Eric Blossom]

On Mon, Aug 02, 2010 at 06:00:10PM +0200, Martin Braun wrote:
> Sorry for the double-post, we were having problems with our SMTP today.
> 
> On Mon, Aug 02, 2010 at 02:54:48PM +0200, Martin Braun wrote:
> > chancoding_industrystd_encoder_bb::chancoding_industrystd_encoder_bb ()
> >   : gr_hier_block2 ("industrystd_encoder_bb",
> >     gr_make_io_signature (1, 1, sizeof(char)),
> >     gr_make_io_signature (1, 1, sizeof(char)))
> > {
> >   trellis_encoder_bb_sptr encoder = 
> > trellis_encoder_bb_sptrllis_make_encoder_bb(fsm(1, 2, make_G()), 0);
> 
> This was a typo due to pasting into the email window.
> make_G() returns a generator matrix, just in case someone wonders.
> 
> Besides, I just figured out that the same happens when I use an FIR
> filter instead.
> Here's how I create segfaults every time:
> 
> - create a hier_block in C++
> - internally connect an FIR filter (e.g. fir_filter_fff)
> - do anything with that block.
> 
> Looks like this has nothing to do with gr-trellis. If this looks like a
> bug to any of the devs and not like a mistake on my end, I'll rig up a
> test case for downloading if necessary.

Not sure if it's a bug or not.  
Please cook up a small test case that shows the problem.

Thanks!
Eric