Re: [Mixxx-devel] Backtrace after about 300 songs loaded...

[Garth D. <iro...@gm...>]

I was loading about 2 - 5 tracks a second (right click "Fast Forward" w/
song mode "Next" in Play Queue), basically hammering it to getting BPMs for
all my songs.

Not a typical use case, but if some wanted to skip 10 tracks without
"stop"+"load in player", they could exercise the same path.


On Tue, Apr 29, 2008 at 3:26 AM, SteveOC <ad...@ad...> wrote:

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> Garth Dahlstrom wrote:
> > Tip for those running gdb - you can do this to start the target program
> > right away: alias gdb='gdb --eval-command=run'
> >
> >
> > Debug: BPM detection successful for "The Tragically Hip - Wheat
> Kings.mp3"
> > Debug: WaveSummary generation successful for "The Underdog Project -
> > Tonight.mp3"
> >
> > Program received signal SIGFPE, Arithmetic exception.
> > [Switching to Thread 1108277584 (LWP 28210)]
> > 0x00000000004fbfb0 in SoundSourceProxy (this=0x3603240,
> pTrack=0x4b76fa0) at
> > src/soundsourceproxy.cpp:79
> > 79          pTrack->setDuration(length()/(2*getSrate()));
> > (gdb) bt
> > #0  0x00000000004fbfb0 in SoundSourceProxy (this=0x3603240,
> > pTrack=0x4b76fa0) at src/soundsourceproxy.cpp:79
> > #1  0x00000000004f5555 in WaveSummary::run (this=0xcfba10) at
> > src/wavesummary.cpp:99
> > #2  0x00002b1b170e4a12 in ?? () from /usr/lib/libQtCore.so.4
> > #3  0x00002b1b186a33f7 in start_thread () from /lib/libpthread.so.0
> > #4  0x00002b1b1968495d in clone () from /lib/libc.so.6
> > #5  0x0000000000000000 in ?? ()
> >
> >
> >
> >
> >
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> > _______________________________________________
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>
>
> So if getSrate() ever returns 0 - you will always get a divide by zero
> error.
>
> replace soundsourceproxy.cpp line 79 with :
>
> if (getSrate()) { pTrack->setDuration(length()/(2*getSrate())); }
>
>
> Question is - why is getSrate() zero in this case  (assuming that is
> what the floating point exception happens to be)
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