Details
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Bug
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Resolution: Done
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P2: Important
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None
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6.3.0
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macOS
Description
We received a crash report, hinting at another issue with statically allocated listeners into the Cocoa application, which are not cleanly torn down before the application exists:
malloc_error_break 0x00007fff70a71355
malloc_vreport 0x00007fff70a6749f
malloc_zone_error 0x00007fff70a78d27
tiny_free_list_remove_ptr 0x00007fff70a5f081
tiny_free_no_lock 0x00007fff70a5e279
free_tiny 0x00007fff70a5dd8b
-[_CFXNotificationTokenRegistration removeFromParent:] 0x00007fff36bdd6a2
-[_CFXNotificationRegistrar remove:] 0x00007fff36bdd5a1
-[_CFXNotificationRegistrar match:object:observer:enumerator:] 0x00007fff36bdcccd
_CFXNotificationRemoveObservers 0x00007fff36bdc502
-[NSNotificationCenter removeObserver:name:object:] 0x00007fff3924d1bb
NI_5_15_7::QMacNotificationObserver::remove() qcore_mac_p.h:346
NI_5_15_7::QMacNotificationObserver::~QMacNotificationObserver() qcore_mac_p.h:349
NI_5_15_7::QMacNotificationObserver::~QMacNotificationObserver() qcore_mac_p.h:349
__cxa_finalize_ranges 0x00007fff7094c13c
exit 0x00007fff7094c412
-[NSApplication terminate:] 0x00007fff3411b994
invocation function for block in Steinberg::Vst::EditorHost::Platform::quit() platform.mm:109
_dispatch_client_callout 0x00007fff70849658
_dispatch_continuation_pop 0x00007fff7084b818
_dispatch_source_invoke 0x00007fff7085b4be
_dispatch_main_queue_callback_4CF 0x00007fff70854b6d
__CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ 0x00007fff36c1a7b1
__CFRunLoopRun 0x00007fff36bda5b7
CFRunLoopRunSpecific 0x00007fff36bd976e
RunCurrentEventLoopInMode 0x00007fff35805aad
ReceiveNextEventCommon 0x00007fff358057c5
_BlockUntilNextEventMatchingListInModeWithFilter 0x00007fff35805569
_DPSNextEvent 0x00007fff33e4e659
-[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] 0x00007fff33e4cea0
-[NSApplication run] 0x00007fff33e3ebae
NSApplicationMain 0x00007fff33e10996
main platform.mm:233
start 0x00007fff708a2cc9
start 0x00007fff708a2cc9
The current suspicion goes towards the style listener attached here:
https://code.qt.io/cgit/qt/qtbase.git/tree/src/plugins/styles/mac/qmacstyle_mac.mm?h=6.3.0#n2095
I will attach a patch which should solve this issue (be it in a not ideal way - i.e. this listener again should ideally be coupled to the native cocoa implementation).