- 
    Bug 
- 
    Resolution: Done
- 
    P1: Critical 
- 
    Qt Creator 4.11.1
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    None
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        cae7b16a9020a901182b695257c41fe2b1f1b7da (qt-creator/qt-creator/4.12)
Steps to reproduce:
- Check out the Qt repos from git (5.15 branch).
- Perform a build from command line
- Open PROJECT/qtdeclarative/src/src.pro in Qt Creator and import the build configuration from the build folder
Qt Creator will run for a while and finally perform the step "Scanning for tests..." which takes a while. At some point it crashes.
Here is the backtrace:
Thread 22 "Thread (pooled)" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffa641b700 (LWP 4423)]
0x00007fffcfb57b20 in Autotest::Internal::QuickTestAstVisitor::visit (this=0x7fffa641ab80, ast=0x7fff900615f0)
    at /home/qt/work/build/qt-creator/src/plugins/autotest/quick/quicktestvisitors.cpp:216
216	/home/qt/work/build/qt-creator/src/plugins/autotest/quick/quicktestvisitors.cpp: No such file or directory.
(gdb) bt
#0  0x00007fffcfb57b20 in Autotest::Internal::QuickTestAstVisitor::visit (this=0x7fffa641ab80, ast=0x7fff900615f0)
    at /home/qt/work/build/qt-creator/src/plugins/autotest/quick/quicktestvisitors.cpp:216
#1  0x00007fffd5b8ccf9 in CPlusPlus::CallAST::accept0 (this=0x7fff900615f0, visitor=0x7fffa641ab80) at /home/qt/work/build/qt-creator/src/libs/3rdparty/cplusplus/ASTVisit.cpp:727
#2  0x00007fffd5b8726f in CPlusPlus::AST::accept (this=0x7fff900615f0, visitor=0x7fffa641ab80) at /home/qt/work/build/qt-creator/src/libs/3rdparty/cplusplus/AST.cpp:51
#3  0x00007fffd5b8d1d0 in CPlusPlus::AST::accept (visitor=0x7fffa641ab80, ast=<optimized out>) at /home/qt/work/build/qt-creator/src/libs/3rdparty/cplusplus/AST.h:92
#4  CPlusPlus::ReturnStatementAST::accept0 (this=0x7fff900615a8, visitor=0x7fffa641ab80) at /home/qt/work/build/qt-creator/src/libs/3rdparty/cplusplus/ASTVisit.cpp:834
#5  0x00007fffd5b8726f in CPlusPlus::AST::accept (this=0x7fff900615a8, visitor=0x7fffa641ab80) at /home/qt/work/build/qt-creator/src/libs/3rdparty/cplusplus/AST.cpp:51
#6  0x00007fffd5b8b8a1 in CPlusPlus::AST::accept (visitor=0x7fffa641ab80, ast=<optimized out>) at /home/qt/work/build/qt-creator/src/libs/3rdparty/cplusplus/AST.h:92
#7  CPlusPlus::AST::accept<CPlusPlus::StatementAST*> (visitor=0x7fffa641ab80, it=0x7fff90061740) at /home/qt/work/build/qt-creator/src/libs/3rdparty/cplusplus/AST.h:98
#8  CPlusPlus::CompoundStatementAST::accept0 (this=0x7fff90061580, visitor=0x7fffa641ab80) at /home/qt/work/build/qt-creator/src/libs/3rdparty/cplusplus/ASTVisit.cpp:298
#9  0x00007fffd5b8726f in CPlusPlus::AST::accept (this=0x7fff90061580, visitor=0x7fffa641ab80) at /home/qt/work/build/qt-creator/src/libs/3rdparty/cplusplus/AST.cpp:51
#10 0x00007fffd5b8c160 in CPlusPlus::AST::accept (visitor=0x7fffa641ab80, ast=<optimized out>) at /home/qt/work/build/qt-creator/src/libs/3rdparty/cplusplus/AST.h:92
#11 CPlusPlus::FunctionDefinitionAST::accept0 (this=0x7fff90061548, visitor=0x7fffa641ab80) at /home/qt/work/build/qt-creator/src/libs/3rdparty/cplusplus/ASTVisit.cpp:483
#12 0x00007fffd5b8726f in CPlusPlus::AST::accept (this=0x7fff90061548, visitor=0x7fffa641ab80) at /home/qt/work/build/qt-creator/src/libs/3rdparty/cplusplus/AST.cpp:51
#13 0x00007fffd5b8d631 in CPlusPlus::AST::accept (visitor=0x7fffa641ab80, ast=<optimized out>) at /home/qt/work/build/qt-creator/src/libs/3rdparty/cplusplus/AST.h:92
#14 CPlusPlus::AST::accept<CPlusPlus::DeclarationAST*> (visitor=0x7fffa641ab80, it=0x7fff90061758) at /home/qt/work/build/qt-creator/src/libs/3rdparty/cplusplus/AST.h:98
#15 CPlusPlus::TranslationUnitAST::accept0 (this=0x7fff9004fb90, visitor=0x7fffa641ab80) at /home/qt/work/build/qt-creator/src/libs/3rdparty/cplusplus/ASTVisit.cpp:944
#16 0x00007fffd5b8726f in CPlusPlus::AST::accept (this=0x7fff9004fb90, visitor=0x7fffa641ab80) at /home/qt/work/build/qt-creator/src/libs/3rdparty/cplusplus/AST.cpp:51
#17 0x00007fffd5b918b3 in CPlusPlus::AST::accept (visitor=<optimized out>, ast=<optimized out>) at /home/qt/work/build/qt-creator/src/libs/3rdparty/cplusplus/AST.h:92
#18 CPlusPlus::ASTVisitor::accept (this=<optimized out>, ast=<optimized out>) at /home/qt/work/build/qt-creator/src/libs/3rdparty/cplusplus/ASTVisitor.cpp:36
#19 0x00007fffcfb4b83a in Autotest::Internal::quickTestName (snapshot=..., doc=...) at /home/qt/work/build/qt-creator/src/plugins/autotest/quick/quicktestparser.cpp:138
#20 Autotest::Internal::QuickTestParser::handleQtQuickTest (this=this@entry=0x14a2500, futureInterface=..., document=..., id=...)
    at /home/qt/work/build/qt-creator/src/plugins/autotest/quick/quicktestparser.cpp:233
#21 0x00007fffcfb4c57d in Autotest::Internal::QuickTestParser::processDocument (this=0x14a2500, futureInterface=..., fileName=...)
    at /home/qt/work/build/qt-creator/src/plugins/autotest/quick/quicktestparser.cpp:360
#22 0x00007fffcfac40c8 in Autotest::Internal::parseFileForTests (fileName=..., futureInterface=..., parsers=...) at /home/qt/work/build/qt-creator/src/plugins/autotest/testcodeparser.cpp:305
#23 Autotest::Internal::TestCodeParser::<lambda(QFutureInterface<QSharedPointer<Autotest::TestParseResult> >&, const QString&)>::operator() (file=..., fi=..., __closure=<optimized out>)
    at /home/qt/work/build/qt-creator/src/plugins/autotest/testcodeparser.cpp:381
#24 Utils::Internal::runAsyncQFutureInterfaceDispatch<QSharedPointer<Autotest::TestParseResult>, const Autotest::Internal::TestCodeParser::scanForTests(const QStringList&, const QList<Core::Id>&)::<lambda(QFutureInterface<QSharedPointer<Autotest::TestParseResult> >&, const QString&)>&, std::reference_wrapper<QString> > (function=..., futureInterface=...)
    at /home/qt/work/build/qt-creator/src/libs/utils/runextensions.h:257
#25 Utils::Internal::runAsyncMemberDispatch<QSharedPointer<Autotest::TestParseResult>, const Autotest::Internal::TestCodeParser::scanForTests(const QStringList&, const QList<Core::Id>&)::<lambda(QFutureInterface<QSharedPointer<Autotest::TestParseResult> >&, const QString&)>&, std::reference_wrapper<QString>, void> (function=..., futureInterface=...)
    at /home/qt/work/build/qt-creator/src/libs/utils/runextensions.h:274
#26 Utils::Internal::runAsyncImpl<QSharedPointer<Autotest::TestParseResult>, const Autotest::Internal::TestCodeParser::scanForTests(const QStringList&, const QList<Core::Id>&)::<lambda(QFutureInterface<QSharedPointer<Autotest::TestParseResult> >&, const QString&)>, std::reference_wrapper<QString> > (functionWrapper=..., futureInterface=...)
    at /home/qt/work/build/qt-creator/src/libs/utils/runextensions.h:295
#27 Utils::Internal::AsyncJob<QSharedPointer<Autotest::TestParseResult>, std::reference_wrapper<const Autotest::Internal::TestCodeParser::scanForTests(const QStringList&, const QList<Core::Id>&)::<lambda(QFutureInterface<QSharedPointer<Autotest::TestParseResult> >&, const QString&)> >, std::reference_wrapper<QString> >::runHelper<0ul, 1ul> (this=0x7fff84006f90)
    at /home/qt/work/build/qt-creator/src/libs/utils/runextensions.h:372
#28 Utils::Internal::AsyncJob<QSharedPointer<Autotest::TestParseResult>, std::reference_wrapper<const Autotest::Internal::TestCodeParser::scanForTests(const QStringList&, const QList<Core::Id>&)::<lambda(QFutureInterface<QSharedPointer<Autotest::TestParseResult> >&, const QString&)> >, std::reference_wrapper<QString> >::run(void) (this=0x7fff84006f90)
    at /home/qt/work/build/qt-creator/src/libs/utils/runextensions.h:352
#29 0x00007ffff56b5db7 in QThreadPoolThread::run() () from /opt/Qt/Tools/Preview/Qt Creator 4.12.0-223/bin/../lib/Qt/lib/libQt5Core.so.5
#30 0x00007ffff56b2375 in QThreadPrivate::start(void*) () from /opt/Qt/Tools/Preview/Qt Creator 4.12.0-223/bin/../lib/Qt/lib/libQt5Core.so.5
#31 0x00007ffff51776ba in start_thread (arg=0x7fffa641b700) at pthread_create.c:333
#32 0x00007ffff460c41d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
I only tried Qt 5.15 from git, but I am pretty sure that this worked some time in the past, e.g. in the Qt 5.12 branch. The problem persists in Qt Creator 4.12.0-rc1.
Everything works when opening sub projects of src.pro, for instance qml.pro. Is this reproducible?