New comment by pullmoll on void-packages repository

https://github.com/void-linux/void-packages/issues/28926#issuecomment-782701209

Comment:
gdb backtrace after the segfault:
```
(gdb) bt
#0  0x00007fffe80cc197 in PCM::addPCM16 (this=0x0, PCMdata=PCMdata@entry=0x555556a245f8) at PCM.cpp:202
#1  0x00007fffe82285e7 in ProjectMPlugin::onTimeout (this=0x555556a245b0)    at ../src/plugins/Visual/projectm/projectmplugin.cpp:99
#2  0x00007ffff6ba27c0 in ?? () from /usr/lib/libQt5Core.so.5
#3  0x00007ffff6ba669a in QTimer::timeout(QTimer::QPrivateSignal) () from /usr/lib/libQt5Core.so.5
#4  0x00007ffff6b9810f in QObject::event(QEvent*) () from /usr/lib/libQt5Core.so.5
#5  0x00007ffff780015f in QApplicationPrivate::notify_helper(QObject*, QEvent*) ()   from /usr/lib/libQt5Widgets.so.5
#6  0x00007ffff6b6c1aa in QCoreApplication::notifyInternal2(QObject*, QEvent*) ()   from /usr/lib/libQt5Core.so.5
#7  0x00007ffff6bc2ac3 in QTimerInfoList::activateTimers() () from /usr/lib/libQt5Core.so.5
#8  0x00007ffff6bc337c in ?? () from /usr/lib/libQt5Core.so.5
#9  0x00007ffff55beccb in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#10 0x00007ffff55bef78 in ?? () from /usr/lib/libglib-2.0.so.0
#11 0x00007ffff55bf02f in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#12 0x00007ffff6bc36ff in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()   from /usr/lib/libQt5Core.so.5
#13 0x00007ffff6b6ab6b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()   from /usr/lib/libQt5Core.so.5
#14 0x00007ffff6b72de0 in QCoreApplication::exec() () from /usr/lib/libQt5Core.so.5
#15 0x000055555555b0ce in main (argc=<optimized out>, argv=<optimized out>) at ../src/app/main.cpp:73
```