[Linux] - Segmentation fault under Clang/Musl build

[z-erica]

Checklist

• I am reporting exactly 1 bug with this issue.
• This bug hasn't already been reported.
• This bug hasn't already been fixed in the latest development build.

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Bug Description

i am trying to package bambootracker for chimera linux, a new linux distribution which uses clang as its compiler toolchain and musl as its standard c library. both the v0.6.3 tag and the master branch immediately crash upon running the program with a segmentation fault.

lldb backtrace (for v0.6.3):

* thread #17, name = 'BambooTracker', stop reason = signal SIGSEGV: invalid permissions for mapped object (fault address: 0x7fffde3d3fd8)
  * frame #0: 0x000055555565a73b BambooTracker`chip::BlipResampler::interpolate(this=0x00007fffef6333f0, src=0x00007fffebe16ba0, nSamples=735, intrSize=924) at resampler.cpp:133
    frame #1: 0x000055555564b5ed BambooTracker`chip::OPNA::mix(this=0x00007fffebe16b20, stream=0x00007fffe9121080, nSamples=735) at opna.cpp:239:35
    frame #2: 0x00005555558d234f BambooTracker`OPNAController::getStreamSamples(this=0x00007fffeb312148, container=<unavailable>, nSamples=735) at opna_controller.cpp:191:23
    frame #3: 0x00005555556278b9 BambooTracker`AudioStream::generate(this=0x00007fffec7327f8, container=<unavailable>, nSamples=<unavailable>) at audio_stream.cpp:136:17
    frame #4: 0x00005555556298ac BambooTracker`AudioStreamRtAudio::initialize(unsigned int, unsigned int, unsigned int, QString const&, QString const&, QString*)::$_0::__invoke(void*, void*, unsigned int, double, unsigned int, void*) [inlined] AudioStreamRtAudio::initialize(unsigned int, unsigned int, unsigned int, QString const&, QString const&, QString*)::$_0::operator()(this=<unavailable>, outputBuffer=<unavailable>, (null)=<unavailable>, nFrames=<unavailable>, (null)=<unavailable>, (null)=<unavailable>, userData=<unavailable>) const at audio_stream_rtaudio.cpp:71:25
    frame #5: 0x00005555556298a4 BambooTracker`AudioStreamRtAudio::initialize(unsigned int, unsigned int, unsigned int, QString const&, QString const&, QString*)::$_0::__invoke(outputBuffer=<unavailable>, (null)=<unavailable>, nFrames=<unavailable>, (null)=<unavailable>, (null)=<unavailable>, userData=<unavailable>) at audio_stream_rtaudio.cpp:68:5
    frame #6: 0x00007ffff7f8ae89 librtaudio.so.7`RtApiPulse::callbackEvent() + 265
    frame #7: 0x00007ffff7f8ab1d librtaudio.so.7`pulseaudio_callback(void*) + 253

a git bisect shows b1a6d2e as the commit which introduces this crash

How to reproduce

build bambootracker normally, then run the resulting binary

System Information

• Operating System: Chimera Linux
• BambooTracker Version: v0.6.3
• Build Type: local

[OPNA2608]

clang as its compiler toolchain and musl as its standard c library

I tried to replicate that configuration, but it would require too many patches to other packages to get working on my distro. Musl support is not very widely maintained there...

• frame #0: 0x000055555565a73b BambooTracker`chip::BlipResampler::interpolate(this=0x00007fffef6333f0, src=0x00007fffebe16ba0, nSamples=735, intrSize=924) at resampler.cpp:133

That just points at the start of that function afaict.

BambooTracker/BambooTracker/chip/resampler.cpp

Lines 132 to 134 in ca31c5d

	sample** BlipResampler::interpolate(sample** src, size_t nSamples, size_t intrSize)
	{
	if (srcRate_ == destRate_) return src;

Not sure how to interpret that. Is that as accurate as you can get the stack trace? Would it be possible for you to debug this any further?