Tempo automation crashes master

[softrabbit]

Master at revision d3ae2e5 crashes, stable-1.1 seems unaffected (or at least much less likely to crash). The project used has a "swing" throughout, made in an automation pattern in a B&B-pattern. Sometimes it crashes 5 seconds in, sometimes 2 minutes. Will dig deeper if needed, but if someone has an idea from that description...

#0  0x00007ffff4cd02d2 in __dynamic_cast () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#1  0x00000000004f4483 in song::setTempo (this=0xb074f0) at /home/raine/src/lmms/src/core/song.cpp:147
#2  0x00007ffff6974c1e in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#3  0x00007ffff70d2e2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#4  0x00007ffff70d94a0 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#5  0x00007ffff695c4dd in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007ffff695fb3d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007ffff6989f83 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#8  0x00007ffff3e93e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007ffff3e94048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007ffff3e940ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007ffff69897a1 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#12 0x00007ffff7174bb6 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#13 0x00007ffff695b0af in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#14 0x00007ffff695b3a5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#15 0x00007ffff6960b79 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#16 0x000000000047e158 in main (argc=1, argv=0x7fffffffde08) at /home/raine/src/lmms/src/core/main.cpp:512

[diizy]

On 11/04/2014 10:02 PM, Raine M. Ekman wrote:

Master at revision d3ae2e5
d3ae2e5
crashes, stable-1.1 seems unaffected (or at least much less likely to
crash). The project used has a "swing" throughout, made in an
automation pattern in a B&B-pattern.

IMHO tempo automation in B&B is something we shouldn't allow in the
first place... too many potential problems.

We really need to move all tempo automation into a dedicated tempo
track, where it can exist in a predictable state.

[softrabbit]

I agree on the tempo track, but if it's not materializing in time for 1.2 (or will it be 2.0?) this issue might need fixing.

[softrabbit]

Seems to be working again. Just left a master build of LMMS to run for 10 hours with my problem project looping, no crash.