[alsa-devel] PCM usage / seg fault in pcm_params.c

[Borg Onion]

>
> > Program terminated with signal 11, Segmentation fault.
> >
> > Sound card is opened, PCM device is opened,
>
> Is it?
>
> ...
> Found PCM device #1
> Playback=no, Capture=yes, Full Duplex=no
> Playback capabilities:
> Segmentation fault
>

You're right, my bad.  Fixed now.  Still, an assert() in the lib wouldn't
hurt.  They seem to be thoroughly applied for everything else.  That same
function in the lib asserts already, so here's my proposal to modify the
assert call:

int snd_pcm_hw_refine(snd_pcm_t *pcm, snd_pcm_hw_params_t *params)
{
        int res;
#ifdef REFINE_DEBUG
        snd_output_t *log;
        snd_output_stdio_attach(&log, stderr, 0);
#endif
        assert(pcm && pcm->ops && params);
#ifdef REFINE_DEBUG
        snd_output_printf(log, "REFINE called:\n");
        snd_pcm_hw_params_dump(params, log);
#endif
        res = pcm->ops->hw_refine(pcm->op_arg, params);
#ifdef REFINE_DEBUG
        snd_output_printf(log, "refine done - result = %i\n", res);
        snd_pcm_hw_params_dump(params, log);
        snd_output_close(log);
#endif
        return res;
}


--BO