Details
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Bug
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Resolution: Fixed
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P1: Critical
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6.8.0, 6.9
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None
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Windows
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6c11f4070 (dev), 0fa33b8c6 (6.8)
Description
When "trivial-auto-var-init=pattern" is enabled, using QTest to run a simple attached example will crash (SIGSEGV) when destructor is called. Something seems to be messing with the vtable.
Steps to reproduce:
- Build attached sample in DEBUG mode
- Run the resulting exe
This simple example application seems to crash only in debug builds, but more complex product such as Qt SafeRenderer seems to crash in release mode also when running unit tests in CI. Using the runtime from user code (such as SafeRenderer example) seems to work ok, so this issue might be relevant only when using the flag with QTest.
Reproduces with mingw13 that ships with 6.8.0 RC 2 and mingw13 with dev in CI. Linux, MacOS and MSVC on Windows seem to work fine even with this flag.
This is the stack trace when the crash happens.
********* Start testing of TestClass ********* Config: Using QtTest library 6.8.0, Qt 6.8.0 (x86_64-little_endian-llp64 shared (dynamic) release build; by GCC 13.1.0), windows 10 PASS : TestClass::initTestCase() A crash occurred in C:\temp\crash_issue_with_internal_add_test\testtt.exe. While testing test_case1 Function time: 0ms Total time: 7ms Exception address: 0x00007ff640c82bda Exception code : 0xc0000005 Stack: # 1: ZN5QTest12CrashHandler19WindowsFaultHandler19windowsFaultHandlerEP19_EXCEPTION_POINTERS() - 0x00007ffe14699fc0 # 2: UnhandledExceptionFilter() - 0x00007ffe52dcd8e0 # 3: memset() - 0x00007ffe55694680 # 4: _C_specific_handler() - 0x00007ffe5567cdc0 # 5: _chkstk() - 0x00007ffe55692810 # 6: RtlRaiseException() - 0x00007ffe556420d0 # 7: KiUserExceptionDispatcher() - 0x00007ffe55691410 # 8: Unable to obtain symbol # 9: Unable to obtain symbol # 10: Unable to obtain symbol # 11: ZN18QMetaMethodInvoker10invokeImplE11QMetaMethodPvN2Qt14ConnectionTypeExPKPKvPKPKcPKPKN9QtPrivate18QMetaTypeInterfaceE() - 0x00007ffda316bc40 # 12: ZN11QMetaMethod10invokeImplES_PvN2Qt14ConnectionTypeExPKPKvPKPKcPKPKN9QtPrivate18QMetaTypeInterfaceE() - 0x00007ffda316d990 # 13: ZN12QTestPrivate14parseBlackListEv() - 0x00007ffe1468c960 # 14: ZN5QTest5qInitEP7QObjectiPPc() - 0x00007ffe14696190 # 15: ZN5QTest5qInitEP7QObjectiPPc() - 0x00007ffe14696190 # 16: ZN5QTest5qInitEP7QObjectiPPc() - 0x00007ffe14696190 # 17: ZN5QTest4qRunEv() - 0x00007ffe14698540 # 18: ZN5QTest5qExecEP7QObjectiPPc() - 0x00007ffe14698e50 # 19: Unable to obtain symbol # 20: Unable to obtain symbol # 21: Unable to obtain symbol # 22: BaseThreadInitThunk() - 0x00007ffe53c47360 # 23: RtlUserThreadStart() - 0x00007ffe5563cc70