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Tor Arne Vestbø b6200de5d0 Don't unload libraries on Darwin-based operating systems 
We can't guarantee that the library didn't define Objective-C classes
that still have lingering references, resulting in warnings such as:

 Attempt to use unknown class 0x10e52e110.

And possibly crashes such as:

 thread #1, queue = 'com.apple.main-thread'
    frame #0: 0x00007fff203829ee libsystem_kernel.dylib`__ulock_wait + 10
    frame #1: 0x00007fff203fa0c5 libsystem_platform.dylib`_os_unfair_lock_lock_slow + 162
    frame #2: 0x00007fff2026226b libobjc.A.dylib`unmap_image + 85
    frame #3: 0x000000010001e11f dyld`dyld::removeImage(ImageLoader*) + 557
    frame #4: 0x000000010002291d dyld`dyld::garbageCollectImages() + 956
    frame #5: 0x000000010002e35d dyld`dlclose + 191
    frame #6: 0x00007fff203cf1c9 libdyld.dylib`dlclose + 183
    frame #7: 0x0000000103f9f2f1 libQt6Core_debug.6.dylib`QLibraryPrivate::unload_sys(this=0x000000011ba2c7d0) at qlibrary_unix.cpp:294:9
    frame #8: 0x0000000103f93f3f libQt6Core_debug.6.dylib`QLibraryPrivate::unload(this=0x000000011ba2c7d0, flag=UnloadSys) at qlibrary.cpp:614:36
    frame #9: 0x0000000103f971fb libQt6Core_debug.6.dylib`QLibraryStore::cleanup() at qlibrary.cpp:425:22
    frame #10: 0x0000000103f970f9 libQt6Core_debug.6.dylib`qlibraryCleanup() at qlibrary.cpp:447:5
    frame #11: 0x0000000103f970d1 libQt6Core_debug.6.dylib`(anonymous namespace)::qlibraryCleanup_dtor_class_::~qlibraryCleanup_dtor_class_(this=0x00000001041edd38) at qlibrary.cpp:449:1
    frame #12: 0x0000000103f930f5 libQt6Core_debug.6.dylib`(anonymous namespace)::qlibraryCleanup_dtor_class_::~qlibraryCleanup_dtor_class_(this=0x00000001041edd38) at qlibrary.cpp:449:1
    frame #13: 0x00007fff202e5d25 libsystem_c.dylib`__cxa_finalize_ranges + 316
    frame #14: 0x00007fff202e6010 libsystem_c.dylib`exit + 53
    frame #15: 0x00007fff203d1f44 libdyld.dylib`start + 8
    frame #16: 0x00007fff203d1f3d libdyld.dylib`start + 1

  thread #5, queue = 'com.apple.root.user-interactive-qos', stop reason = signal SIGABRT
    frame #0: 0x00007fff203a356e libsystem_kernel.dylib`__abort_with_payload + 10
    frame #1: 0x00007fff203a4fbd libsystem_kernel.dylib`abort_with_payload_wrapper_internal + 80
    frame #2: 0x00007fff203a4f6d libsystem_kernel.dylib`abort_with_reason + 19
    frame #3: 0x00007fff202749e3 libobjc.A.dylib`_objc_fatalv(unsigned long long, unsigned long long, char const*, __va_list_tag*) + 114
    frame #4: 0x00007fff20274971 libobjc.A.dylib`_objc_fatal(char const*, ...) + 135
    frame #5: 0x00007fff20255ccb libobjc.A.dylib`lookUpImpOrForward + 881
    frame #6: 0x00007fff2025539b libobjc.A.dylib`_objc_msgSend_uncached + 75
    frame #7: 0x00007fff22f368d6 AppKit`-[_NSWindowTransformAnimation setCurrentProgress:] + 42
    frame #8: 0x00007fff22f37a8a AppKit`__55-[NSAnimation(NSInternal) _advanceTimeWithDisplayLink:]_block_invoke + 31
    frame #9: 0x00007fff22d0774f AppKit`NSPerformVisuallyAtomicChange + 132
    frame #10: 0x00007fff22f379dc AppKit`-[NSAnimation(NSInternal) _advanceTimeWithDisplayLink:] + 172
    frame #11: 0x00007fff22e9a184 AppKit`-[NSScreenDisplayLink _fire] + 180
    frame #12: 0x00007fff2362f0b4 AppKit`___NSRunLoopTimerCreateWithHandler_block_invoke + 34
    frame #13: 0x00007fff204c6be9 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20
    frame #14: 0x00007fff204c66dd CoreFoundation`__CFRunLoopDoTimer + 927
    frame #15: 0x00007fff204c623a CoreFoundation`__CFRunLoopDoTimers + 307
    frame #16: 0x00007fff204ace13 CoreFoundation`__CFRunLoopRun + 1988
    frame #17: 0x00007fff204abf8c CoreFoundation`CFRunLoopRunSpecific + 563
    frame #18: 0x00007fff2123d607 Foundation`-[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 212
    frame #19: 0x00007fff22f378f0 AppKit`-[NSAnimation(NSInternal) _runBlocking] + 453
    frame #20: 0x00007fff22f376ae AppKit`__42-[NSAnimation(NSInternal) _runInNewThread]_block_invoke + 97
    frame #21: 0x0000000104edb032 libdispatch.dylib`_dispatch_call_block_and_release + 12
    frame #22: 0x0000000104edc264 libdispatch.dylib`_dispatch_client_callout + 8
    frame #23: 0x0000000104ef04ac libdispatch.dylib`_dispatch_root_queue_drain + 828
    frame #24: 0x0000000104ef0d3f libdispatch.dylib`_dispatch_worker_thread2 + 127
    frame #25: 0x0000000104f7eac7 libsystem_pthread.dylib`_pthread_wqthread + 244
    frame #26: 0x0000000104f7dae3 libsystem_pthread.dylib`start_wqthread + 15

This has been e.g. observed when a QNSWindow isn't closed and released
at application quit as expected. Although that is a corner case that
shouldn't happen, the general case is still valid.

Fixes: QTBUG-96208
Pick-to: 6.2 5.15
Change-Id: I6c9d220e6f5389707baf7ae983f3156e8e51c316
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
2021-09-17 13:31:59 +02:00
.github/workflows Github Actions: many minor updates 2021-01-22 18:48:54 +01:00
bin Add missing -help argument to qt-configure-module 2021-08-20 19:44:43 +02:00
cmake Ensure _qt_is_android_executable is set for internal executables too 2021-09-17 13:57:27 +10:00
coin Revert "coin: Generate JUnit result files" 2021-09-16 17:02:44 +00:00
config.tests Fix the precompile_header configure test 2021-06-19 01:08:23 +02:00
dist Add Qt 6.0.0 changes file 2020-11-16 10:02:08 +02:00
doc Doc: Centralize RFC documentation-links in rfc.qdoc 2021-09-16 15:52:27 +02:00
examples Doc: Centralize RFC documentation-links in rfc.qdoc 2021-09-16 15:52:27 +02:00
lib Purge all fonts 2015-08-18 19:59:14 +00:00
libexec Teach syncqt to filter out QT_DEPRECATED_* macros 2021-09-07 08:28:09 +02:00
mkspecs Fix .qm file name calculation in lrelease.prf 2021-09-10 23:27:15 +02:00
qmake qmake/xcode: Do not create OBJECTS_DIR 2021-09-10 15:40:49 +02:00
src Don't unload libraries on Darwin-based operating systems 2021-09-17 13:31:59 +02:00
tests Add missing dependencies of tests on their helper programs 2021-09-17 12:57:25 +02:00
util unicode: Fix typo s/supersting/superstring/ 2021-09-15 21:58:12 +02:00
.cmake.conf Bump version 2021-09-14 13:19:55 +03:00
.gitattributes Give batch files CRLF line endings 2020-11-04 15:02:29 +00:00
.gitignore testlib: Accurately name JUnit test, and only run for JUnitXML reporter 2021-07-29 15:39:40 +02:00
.lgtm.yml Skip LGTM analysis for the bootstrap library and tools 2020-07-16 01:04:34 +02:00
.qmake.conf Bump version 2021-09-14 13:19:55 +03:00
.tag
CMakeLists.txt CMake: Enforce minimum CMake version in user projects 2021-08-04 16:03:08 +02:00
conanfile.py Conan: Rename 'extra_cmake_args' Conan option as 'cmake_args_qtbase' 2021-08-30 05:51:36 +00:00
config_help.txt Remove dysfunctional -coverage configure argument 2021-08-10 12:00:13 +02:00
configure Remove unsupported, host-related options from configure shell script 2021-08-05 02:44:27 +02:00
configure.bat Fix our usage of CMake script mode in Windows configure 2021-08-20 19:44:43 +02:00
configure.cmake Add Qt PrintSupport to the configure summary 2021-09-03 21:35:06 +02:00
dependencies.yaml Re-add dependencies.yaml now that qt5.git wip/qt6 builds fine 2019-09-18 13:19:31 +02:00
LICENSE.FDL
LICENSE.GPL2 Add new license header templates and license files 2016-01-14 20:43:46 +00:00
LICENSE.GPL3 Add new license header templates and license files 2016-01-14 20:43:46 +00:00
LICENSE.GPL3-EXCEPT Add new license header templates and license files 2016-01-14 20:43:46 +00:00
LICENSE.LGPL3 Add new license header templates and license files 2016-01-14 20:43:46 +00:00
LICENSE.LGPLv3 Remove LICENSE.GPLv3, LICENSE.LGPLv21, LGPL_EXCEPTION.txt 2018-04-16 11:02:14 +00:00
LICENSE.QT-LICENSE-AGREEMENT Update enterprise license agreement v4.2.1 2019-12-18 13:07:19 +02:00
qt_cmdline.cmake Remove dysfunctional -coverage configure argument 2021-08-10 12:00:13 +02:00
sync.profile Implement generating of a module cpp export header 2021-06-24 20:40:49 +02:00