Crash after rendering when using soundio #2638
Description
cc @andrewrk
Steps to reproduce:
- Select the
soundioaudio device. - Have something to export.
- Export. LMMS will crash.
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff71efc700 (LWP 7227)]
0x00007ffff5dbc959 in soundio_outstream_start (outstream=0x0)
at ../src/soundio.c:536
536 struct SoundIo *soundio = outstream->device->soundio;
(gdb) bt
#0 0x00007ffff5dbc959 in soundio_outstream_start (outstream=0x0) at ../src/soundio.c:536
#1 0x000000000052284c in AudioSoundIo::startProcessing() ()
#2 0x00000000004fb003 in ProjectRenderer::run() ()
#3 0x00007ffff680cd1c in () at /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#4 0x00007ffff7bc26aa in start_thread (arg=0x7fff71efc700) at pthread_create.c:333
#5 0x00007ffff40f6e9d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
So what's happening here? LMMS pauses the audio device to temporarily replace it with the renderer. AudioSoundIo::stopProcessing() however destroys m_outstream which would be needed again in AudioSoundIo::startProcessing() and after that.