Looks like variable scale is both used and assigned to on row 249 and 294 in juce_OpenGLContext.cpp.
SUMMARY: ThreadSanitizer: data race juce_OpenGLContext.cpp:294 in juce::OpenGLContext::CachedImage::updateViewportSize(bool)
==================
==================
WARNING: ThreadSanitizer: data race (pid=14390)
Read of size 8 at 0x7b600000c4e0 by thread T35 (mutexes: write M388008445032455848):
#0 juce::OpenGLContext::CachedImage::renderFrame() juce_OpenGLContext.cpp:249 (MyPlugin:x86_64+0x18bc77e)
#1 juce::OpenGLContext::CachedImage::runJob() juce_OpenGLContext.cpp:465 (MyPlugin:x86_64+0x18b6880)
#2 non-virtual thunk to juce::OpenGLContext::CachedImage::runJob() juce_OpenGLContext.cpp (MyPlugin:x86_64+0x18b6a6f)
#3 juce::ThreadPool::runNextJob(juce::ThreadPool::ThreadPoolThread&) juce_ThreadPool.cpp:384 (MyPlugin:x86_64+0x14668a1)
#4 juce::ThreadPool::ThreadPoolThread::run() juce_ThreadPool.cpp:36 (MyPlugin:x86_64+0x14dcae7)
#5 juce::Thread::threadEntryPoint() juce_Thread.cpp:96 (MyPlugin:x86_64+0x1461ac9)
#6 juce::juce_threadEntryPoint(void*) juce_Thread.cpp:118 (MyPlugin:x86_64+0x14621c8)
#7 juce::threadEntryProc(void*) juce_posix_SharedCode.h:896 (MyPlugin:x86_64+0x14b1879)
Previous write of size 8 at 0x7b600000c4e0 by main thread (mutexes: write M1082688395496394928, write M325521000202657448):
#0 juce::OpenGLContext::CachedImage::updateViewportSize(bool) juce_OpenGLContext.cpp:294 (MyPlugin:x86_64+0x18bbe79)
#1 juce::OpenGLContext::CachedImage::paint(juce::Graphics&) juce_OpenGLContext.cpp:148 (MyPlugin:x86_64+0x18b6546)
#2 juce::Component::paintWithinParentContext(juce::Graphics&) juce_Component.cpp:1887 (MyPlugin:x86_64+0x4543e5)
#3 juce::Component::paintComponentAndChildren(juce::Graphics&) juce_Component.cpp:1950 (MyPlugin:x86_64+0x455009)
#4 juce::Component::paintEntireComponent(juce::Graphics&, bool) juce_Component.cpp:2008 (MyPlugin:x86_64+0x4548ee)
#5 juce::Component::paintWithinParentContext(juce::Graphics&) juce_Component.cpp:1889 (MyPlugin:x86_64+0x4543fe)
#6 juce::Component::paintComponentAndChildren(juce::Graphics&) juce_Component.cpp:1950 (MyPlugin:x86_64+0x455009)
#7 juce::Component::paintEntireComponent(juce::Graphics&, bool) juce_Component.cpp:2008 (MyPlugin:x86_64+0x4548ee)
#8 juce::Component::paintWithinParentContext(juce::Graphics&) juce_Component.cpp:1889 (MyPlugin:x86_64+0x4543fe)
#9 juce::Component::paintComponentAndChildren(juce::Graphics&) juce_Component.cpp:1950 (MyPlugin:x86_64+0x455009)
#10 juce::Component::paintEntireComponent(juce::Graphics&, bool) juce_Component.cpp:2008 (MyPlugin:x86_64+0x4548ee)
#11 juce::Component::paintWithinParentContext(juce::Graphics&) juce_Component.cpp:1889 (MyPlugin:x86_64+0x4543fe)
#12 juce::Component::paintComponentAndChildren(juce::Graphics&) juce_Component.cpp:1950 (MyPlugin:x86_64+0x455009)
#13 juce::Component::paintEntireComponent(juce::Graphics&, bool) juce_Component.cpp:2008 (MyPlugin:x86_64+0x4548ee)
#14 juce::Component::paintWithinParentContext(juce::Graphics&) juce_Component.cpp:1889 (MyPlugin:x86_64+0x4543fe)
#15 juce::Component::paintComponentAndChildren(juce::Graphics&) juce_Component.cpp:1950 (MyPlugin:x86_64+0x455009)
#16 juce::Component::paintEntireComponent(juce::Graphics&, bool) juce_Component.cpp:2008 (MyPlugin:x86_64+0x4548ee)
#17 juce::Component::paintWithinParentContext(juce::Graphics&) juce_Component.cpp:1889 (MyPlugin:x86_64+0x4543fe)
#18 juce::Component::paintComponentAndChildren(juce::Graphics&) juce_Component.cpp:1950 (MyPlugin:x86_64+0x455009)
#19 juce::Component::paintEntireComponent(juce::Graphics&, bool) juce_Component.cpp:2008 (MyPlugin:x86_64+0x4548ee)
#20 juce::Component::paintWithinParentContext(juce::Graphics&) juce_Component.cpp:1889 (MyPlugin:x86_64+0x4543fe)
#21 juce::Component::paintComponentAndChildren(juce::Graphics&) juce_Component.cpp:1950 (MyPlugin:x86_64+0x455009)
#22 juce::Component::paintEntireComponent(juce::Graphics&, bool) juce_Component.cpp:2008 (MyPlugin:x86_64+0x4548ee)
#23 juce::Component::paintWithinParentContext(juce::Graphics&) juce_Component.cpp:1889 (MyPlugin:x86_64+0x4543fe)
#24 juce::Component::paintComponentAndChildren(juce::Graphics&) juce_Component.cpp:1950 (MyPlugin:x86_64+0x455009)
#25 juce::Component::paintEntireComponent(juce::Graphics&, bool) juce_Component.cpp:2008 (MyPlugin:x86_64+0x4548ee)
#26 juce::OpenGLContext::CachedImage::paintOwner(juce::LowLevelGraphicsContext&) juce_OpenGLContext.cpp:393 (MyPlugin:x86_64+0x18bf54c)
#27 juce::OpenGLContext::CachedImage::paintComponent() juce_OpenGLContext.cpp:342 (MyPlugin:x86_64+0x18bda6e)
#28 juce::OpenGLContext::CachedImage::renderFrame() juce_OpenGLContext.cpp:260 (MyPlugin:x86_64+0x18bc8bd)
#29 juce::OpenGLContext::CachedImage::handleResize() juce_OpenGLContext.cpp:423 (MyPlugin:x86_64+0x18bfbbc)
#30 juce::OpenGLContext::Attachment::componentMovedOrResized(bool, bool) juce_OpenGLContext.cpp:698 (MyPlugin:x86_64+0x18b534c)
#31 juce::ComponentMovementWatcher::componentMovedOrResized(juce::Component&, bool, bool) juce_ComponentMovementWatcher.cpp:100 (MyPlugin:x86_64+0x4b51f4)
#32 juce::Component::sendMovedResizedMessages(bool, bool)::$_3::operator()(juce::ComponentListener&) const juce_Component.cpp:1167 (MyPlugin:x86_64+0x6ebce0)
#33 void juce::ListenerList<juce::ComponentListener, juce::Array<juce::ComponentListener*, juce::DummyCriticalSection, 0> >::callChecked<juce::Component::sendMovedResizedMessages(bool, bool)::$_3, juce::Component::BailOutChecker>(juce::Component::BailOutChecker const&, juce::Component::sendMovedResizedMessages(bool, bool)::$_3&&) juce_ListenerList.h:153 (MyPlugin:x86_64+0x44ceca)
#34 juce::Component::sendMovedResizedMessages(bool, bool) juce_Component.cpp:1167 (MyPlugin:x86_64+0x44cdb5)
#35 juce::Component::sendMovedResizedMessagesIfPending() juce_Component.cpp:1129 (MyPlugin:x86_64+0x44cb10)
#36 juce::Component::setBounds(int, int, int, int) juce_Component.cpp:1115 (MyPlugin:x86_64+0x44c823)
#37 juce::Component::setTopLeftPosition(juce::Point<int>) juce_Component.cpp:1173 (MyPlugin:x86_64+0x448fba)
#38 juce::Component::setTopLeftPosition(int, int) juce_Component.cpp:1172 (MyPlugin:x86_64+0x44cfe8)
#39 JuceVSTWrapper::EditorCompWrapper::updateWindowSize(bool) juce_VST_Wrapper.cpp:1435 (MyPlugin:x86_64+0x201c4)
#40 JuceVSTWrapper::EditorCompWrapper::childBoundsChanged(juce::Component*) juce_VST_Wrapper.cpp:1413 (MyPlugin:x86_64+0x1d866)
#41 juce::Component::sendMovedResizedMessages(bool, bool) juce_Component.cpp:1164 (MyPlugin:x86_64+0x44cd66)
#42 juce::Component::sendMovedResizedMessagesIfPending() juce_Component.cpp:1129 (MyPlugin:x86_64+0x44cb10)
#43 juce::Component::setBounds(int, int, int, int) juce_Component.cpp:1115 (MyPlugin:x86_64+0x44c823)
#44 juce::Component::setSize(int, int) juce_Component.cpp:1170 (MyPlugin:x86_64+0x44cf5f)
#45 PluginAudioProcessorEditor::updateScaleAndSize() PluginAudioProcessorEditor.cpp:225 (MyPlugin:x86_64+0x8c8b0)
#46 PluginAudioProcessorEditor::changeListenerCallback(SafeChangeBroadcaster*) PluginAudioProcessorEditor.cpp:209 (MyPlugin:x86_64+0x8c6c0)
#47 non-virtual thunk to PluginAudioProcessorEditor::changeListenerCallback(SafeChangeBroadcaster*) PluginAudioProcessorEditor.cpp (MyPlugin:x86_64+0x8c932)
#48 SafeChangeBroadcaster::sendSynchronousChangeMessage(juce::Identifier const&) SafeChangeBroadcaster.h:65 (MyPlugin:x86_64+0x9f9c1d)
#49 SafeChangeBroadcaster::AsyncBroadcaster::handleAsyncUpdate() SafeChangeBroadcaster.h:122 (MyPlugin:x86_64+0x9f9861)
#50 juce::AsyncUpdater::AsyncUpdaterMessage::messageCallback() juce_AsyncUpdater.cpp:34 (MyPlugin:x86_64+0x15b73b1)
#51 juce::MessageQueue::deliverNextMessage() juce_osx_MessageQueue.h:82 (MyPlugin:x86_64+0x15c651b)
#52 juce::MessageQueue::runLoopCallback() juce_osx_MessageQueue.h:93 (MyPlugin:x86_64+0x15c6449)
#53 juce::MessageQueue::runLoopSourceCallback(void*) juce_osx_MessageQueue.h:101 (MyPlugin:x86_64+0x15c620b)
#54 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ <null>:10185136 (CoreFoundation:x86_64h+0x83de1)
#55 createAndShowEditorOnMessageThread(juce::AudioPluginInstance&) TestUtilities.h:156 (pluginval:x86_64+0x1000b0816)
#56 ScopedEditorShower::ScopedEditorShower(juce::AudioPluginInstance&) TestUtilities.h:197 (pluginval:x86_64+0x1000b0578)
#57 ScopedEditorShower::ScopedEditorShower(juce::AudioPluginInstance&) TestUtilities.h:198 (pluginval:x86_64+0x1000b0478)
#58 EditorTest::runTest(PluginTests&, juce::AudioPluginInstance&) BasicTests.cpp:56 (pluginval:x86_64+0x1000b0172)
#59 PluginTests::testType(juce::PluginDescription const&)::$_1::operator()() PluginTests.cpp:185 (pluginval:x86_64+0x100072237)
#60 decltype(std::__1::forward<PluginTests::testType(juce::PluginDescription const&)::$_1&>(fp)()) std::__1::__invoke<PluginTests::testType(juce::PluginDescription const&)::$_1&>(PluginTests::testType(juce::PluginDescription const&)::$_1&) type_traits:4425 (pluginval:x86_64+0x100072120)
#61 void std::__1::__invoke_void_return_wrapper<void>::__call<PluginTests::testType(juce::PluginDescription const&)::$_1&>(PluginTests::testType(juce::PluginDescription const&)::$_1&) __functional_base:348 (pluginval:x86_64+0x100072080)
#62 std::__1::__function::__alloc_func<PluginTests::testType(juce::PluginDescription const&)::$_1, std::__1::allocator<PluginTests::testType(juce::PluginDescription const&)::$_1>, void ()>::operator()() functional:1533 (pluginval:x86_64+0x100072020)
#63 std::__1::__function::__func<PluginTests::testType(juce::PluginDescription const&)::$_1, std::__1::allocator<PluginTests::testType(juce::PluginDescription const&)::$_1>, void ()>::operator()() functional:1707 (pluginval:x86_64+0x10006ff0f)
#64 std::__1::__function::__value_func<void ()>::operator()() const functional:1860 (pluginval:x86_64+0x10009b7e8)
#65 std::__1::function<void ()>::operator()() const functional:2419 (pluginval:x86_64+0x10009b518)
#66 juce::MessageManager::callAsync(std::__1::function<void ()>)::AsyncCallInvoker::messageCallback() juce_MessageManager.cpp:192 (pluginval:x86_64+0x10093c7af)
#67 juce::MessageQueue::deliverNextMessage() juce_osx_MessageQueue.h:82 (pluginval:x86_64+0x10094de3b)
#68 juce::MessageQueue::runLoopCallback() juce_osx_MessageQueue.h:93 (pluginval:x86_64+0x10094dd69)
#69 juce::MessageQueue::runLoopSourceCallback(void*) juce_osx_MessageQueue.h:101 (pluginval:x86_64+0x10094db2b)
#70 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ <null>:10185136 (CoreFoundation:x86_64h+0x83de1)
#71 juce::JUCEApplicationBase::main() juce_ApplicationBase.cpp:262 (pluginval:x86_64+0x10092b338)
#72 juce::JUCEApplicationBase::main(int, char const**) juce_ApplicationBase.cpp:240 (pluginval:x86_64+0x10092b0b8)
#73 main Main.cpp:183 (pluginval:x86_64+0x100020c3c)
Location is heap block of size 912 at 0x7b600000c400 allocated by main thread:
#0 operator new(unsigned long) <null>:10185168 (libclang_rt.tsan_osx_dynamic.dylib:x86_64h+0x7596b)
#1 juce::OpenGLContext::Attachment::attach() juce_OpenGLContext.cpp:781 (MyPlugin:x86_64+0x18b4fc0)
#2 juce::OpenGLContext::Attachment::componentVisibilityChanged() juce_OpenGLContext.cpp:722 (MyPlugin:x86_64+0x18b5542)
#3 juce::OpenGLContext::Attachment::componentPeerChanged() juce_OpenGLContext.cpp:710 (MyPlugin:x86_64+0x18b548d)
#4 juce::ComponentMovementWatcher::componentParentHierarchyChanged(juce::Component&) juce_ComponentMovementWatcher.cpp:60 (MyPlugin:x86_64+0x4b4c0e)
#5 juce::Component::internalHierarchyChanged()::$_5::operator()(juce::ComponentListener&) const juce_Component.cpp:1616 (MyPlugin:x86_64+0x6ed1ca)
#6 void juce::ListenerList<juce::ComponentListener, juce::Array<juce::ComponentListener*, juce::DummyCriticalSection, 0> >::callChecked<juce::Component::internalHierarchyChanged()::$_5, juce::Component::BailOutChecker>(juce::Component::BailOutChecker const&, juce::Component::internalHierarchyChanged()::$_5&&) juce_ListenerList.h:153 (MyPlugin:x86_64+0x45115a)
#7 juce::Component::internalHierarchyChanged() juce_Component.cpp:1616 (MyPlugin:x86_64+0x447ef2)
#8 juce::Component::internalHierarchyChanged() juce_Component.cpp:1623 (MyPlugin:x86_64+0x447f65)
#9 juce::Component::internalHierarchyChanged() juce_Component.cpp:1623 (MyPlugin:x86_64+0x447f65)
#10 juce::Component::internalHierarchyChanged() juce_Component.cpp:1623 (MyPlugin:x86_64+0x447f65)
#11 juce::Component::internalHierarchyChanged() juce_Component.cpp:1623 (MyPlugin:x86_64+0x447f65)
#12 juce::Component::internalHierarchyChanged() juce_Component.cpp:1623 (MyPlugin:x86_64+0x447f65)
#13 juce::Component::internalHierarchyChanged() juce_Component.cpp:1623 (MyPlugin:x86_64+0x447f65)
#14 juce::Component::internalHierarchyChanged() juce_Component.cpp:1623 (MyPlugin:x86_64+0x447f65)
#15 juce::Component::internalHierarchyChanged() juce_Component.cpp:1623 (MyPlugin:x86_64+0x447f65)
#16 juce::Component::internalHierarchyChanged() juce_Component.cpp:1623 (MyPlugin:x86_64+0x447f65)
#17 juce::Component::setVisible(bool) juce_Component.cpp:552 (MyPlugin:x86_64+0x4477f6)
#18 juce::attachComponentToWindowRefVST(juce::Component*, void*, bool) juce_VST_Wrapper.mm:184 (MyPlugin:x86_64+0x2ef8e)
#19 JuceVSTWrapper::EditorCompWrapper::attachToHost(JuceVSTWrapper::VstOpCodeArguments) juce_VST_Wrapper.cpp:1342 (MyPlugin:x86_64+0x20ae1)
#20 JuceVSTWrapper::handleOpenEditor(JuceVSTWrapper::VstOpCodeArguments) juce_VST_Wrapper.cpp:1851 (MyPlugin:x86_64+0x154df)
#21 JuceVSTWrapper::dispatcher(int, JuceVSTWrapper::VstOpCodeArguments) juce_VST_Wrapper.cpp:1219 (MyPlugin:x86_64+0x13677)
#22 JuceVSTWrapper::dispatcherCB(Vst2::AEffect*, int, int, long long, void*, float) juce_VST_Wrapper.cpp:1265 (MyPlugin:x86_64+0x9a16)
#23 juce::VSTPluginInstance::dispatch(int, int, long long, void*, float) const juce_VSTPluginFormat.cpp:1751 (pluginval:x86_64+0x1000fa0cb)
#24 juce::VSTPluginWindow::dispatch(int, int, int, void*, float) juce_VSTPluginFormat.cpp:3279 (pluginval:x86_64+0x1001aa372)
#25 juce::VSTPluginWindow::openPluginWindow(void*) juce_VSTPluginFormat.cpp:3075 (pluginval:x86_64+0x1001ad1ab)
#26 juce::VSTPluginWindow::visibilityChanged() juce_VSTPluginFormat.cpp:2840 (pluginval:x86_64+0x1001aa590)
#27 juce::Component::sendVisibilityChangeMessage() juce_Component.cpp:564 (pluginval:x86_64+0x100350f91)
#28 juce::Component::setVisible(bool) juce_Component.cpp:545 (pluginval:x86_64+0x1003509ca)
#29 juce::VSTPluginWindow::VSTPluginWindow(juce::VSTPluginInstance&) juce_VSTPluginFormat.cpp:2802 (pluginval:x86_64+0x1001a9f7e)
#30 juce::VSTPluginWindow::VSTPluginWindow(juce::VSTPluginInstance&) juce_VSTPluginFormat.cpp:2772 (pluginval:x86_64+0x1000f92d8)
#31 juce::VSTPluginInstance::createEditor() juce_VSTPluginFormat.cpp:3486 (pluginval:x86_64+0x1000f9201)
#32 createAndShowEditorOnMessageThread(juce::AudioPluginInstance&) TestUtilities.h:148 (pluginval:x86_64+0x1000b073d)
#33 ScopedEditorShower::ScopedEditorShower(juce::AudioPluginInstance&) TestUtilities.h:197 (pluginval:x86_64+0x1000b0578)
#34 ScopedEditorShower::ScopedEditorShower(juce::AudioPluginInstance&) TestUtilities.h:198 (pluginval:x86_64+0x1000b0478)
#35 EditorTest::runTest(PluginTests&, juce::AudioPluginInstance&) BasicTests.cpp:56 (pluginval:x86_64+0x1000b0172)
#36 PluginTests::testType(juce::PluginDescription const&)::$_1::operator()() PluginTests.cpp:185 (pluginval:x86_64+0x100072237)
#37 decltype(std::__1::forward<PluginTests::testType(juce::PluginDescription const&)::$_1&>(fp)()) std::__1::__invoke<PluginTests::testType(juce::PluginDescription const&)::$_1&>(PluginTests::testType(juce::PluginDescription const&)::$_1&) type_traits:4425 (pluginval:x86_64+0x100072120)
#38 void std::__1::__invoke_void_return_wrapper<void>::__call<PluginTests::testType(juce::PluginDescription const&)::$_1&>(PluginTests::testType(juce::PluginDescription const&)::$_1&) __functional_base:348 (pluginval:x86_64+0x100072080)
#39 std::__1::__function::__alloc_func<PluginTests::testType(juce::PluginDescription const&)::$_1, std::__1::allocator<PluginTests::testType(juce::PluginDescription const&)::$_1>, void ()>::operator()() functional:1533 (pluginval:x86_64+0x100072020)
#40 std::__1::__function::__func<PluginTests::testType(juce::PluginDescription const&)::$_1, std::__1::allocator<PluginTests::testType(juce::PluginDescription const&)::$_1>, void ()>::operator()() functional:1707 (pluginval:x86_64+0x10006ff0f)
#41 std::__1::__function::__value_func<void ()>::operator()() const functional:1860 (pluginval:x86_64+0x10009b7e8)
#42 std::__1::function<void ()>::operator()() const functional:2419 (pluginval:x86_64+0x10009b518)
#43 juce::MessageManager::callAsync(std::__1::function<void ()>)::AsyncCallInvoker::messageCallback() juce_MessageManager.cpp:192 (pluginval:x86_64+0x10093c7af)
#44 juce::MessageQueue::deliverNextMessage() juce_osx_MessageQueue.h:82 (pluginval:x86_64+0x10094de3b)
#45 juce::MessageQueue::runLoopCallback() juce_osx_MessageQueue.h:93 (pluginval:x86_64+0x10094dd69)
#46 juce::MessageQueue::runLoopSourceCallback(void*) juce_osx_MessageQueue.h:101 (pluginval:x86_64+0x10094db2b)
#47 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ <null>:10185168 (CoreFoundation:x86_64h+0x83de1)
#48 juce::JUCEApplicationBase::main() juce_ApplicationBase.cpp:262 (pluginval:x86_64+0x10092b338)
#49 juce::JUCEApplicationBase::main(int, char const**) juce_ApplicationBase.cpp:240 (pluginval:x86_64+0x10092b0b8)
#50 main Main.cpp:183 (pluginval:x86_64+0x100020c3c)