*** Stacktrace of process 6226 ***
Executable name: /home/lastique/qtcreator-4.8.1/libexec/qtcreator/clangbackend
[New LWP 19396]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f51abc7a6d9 in __GI___poll (fds=0x2474d00, nfds=3, timeout=4996) at ../sysdeps/unix/sysv/linux/poll.c:29
  Id   Target Id                                       Frame 
* 1    Thread 0x7f51a8658c00 (LWP 6226) "clangbackend" 0x00007f51abc7a6d9 in __GI___poll (fds=0x2474d00, nfds=3, timeout=4996) at ../sysdeps/unix/sysv/linux/poll.c:29
  2    Thread 0x7f51a80e5700 (LWP 19396) "QThread"     0x00007f51ae6b02d0 in clang::AttributedType const* clang::Type::getAs<clang::AttributedType>() const () from /home/lastique/qtcreator-4.8.1/libexec/qtcreator/../../lib/qtcreator/libclang.so.7

Thread 2 (Thread 0x7f51a80e5700 (LWP 19396)):
#0  0x00007f51ae6b02d0 in clang::AttributedType const* clang::Type::getAs<clang::AttributedType>() const () from /home/lastique/qtcreator-4.8.1/libexec/qtcreator/../../lib/qtcreator/libclang.so.7
#1  0x00007f51ae572ef1 in clang::cxtype::MakeCXType(clang::QualType, CXTranslationUnitImpl*) () from /home/lastique/qtcreator-4.8.1/libexec/qtcreator/../../lib/qtcreator/libclang.so.7
#2  0x00007f51ae573cef in clang_getPointeeType () from /home/lastique/qtcreator-4.8.1/libexec/qtcreator/../../lib/qtcreator/libclang.so.7
#3  0x0000000000464b9c in ClangBackEnd::Type::pointeeType() const ()
#4  0x000000000045b40d in ClangBackEnd::(anonymous namespace)::ToolTipInfoCollector::qDocInfo(ClangBackEnd::Cursor const&) const ()
#5  0x000000000045c339 in ClangBackEnd::collectToolTipInfo(ClangBackEnd::UnsavedFiles&, Utf8String const&, Utf8String const&, CXTranslationUnitImpl*, unsigned int, unsigned int) ()
#6  0x000000000045ec87 in ClangBackEnd::TranslationUnit::tooltip(ClangBackEnd::UnsavedFiles&, Utf8String const&, unsigned int, unsigned int) const ()
#7  0x0000000000454c4d in std::_Function_handler<ClangBackEnd::ToolTipInfo (), ClangBackEnd::RequestToolTipJob::prepareAsyncRun()::{lambda()#1}>::_M_invoke(std::_Any_data const&) ()
#8  0x00000000004410c5 in void Utils::Internal::runAsyncMemberDispatch<ClangBackEnd::ToolTipInfo, std::function<ClangBackEnd::ToolTipInfo ()>, , void>(QFutureInterface<ClangBackEnd::ToolTipInfo>, std::function<ClangBackEnd::ToolTipInfo ()>&&) ()
#9  0x00000000004413e6 in Utils::Internal::AsyncJob<ClangBackEnd::ToolTipInfo, std::function<ClangBackEnd::ToolTipInfo ()>&>::run() ()
#10 0x00007f51b282a89d in Utils::Internal::RunnableThread::run() () from /home/lastique/qtcreator-4.8.1/libexec/qtcreator/../../lib/qtcreator/libUtils.so.4
#11 0x00007f51ac23bd13 in QThreadPrivate::start(void*) () from /home/lastique/qtcreator-4.8.1/libexec/qtcreator/../../lib/Qt/lib/libQt5Core.so.5
#12 0x00007f51ac08f164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#13 0x00007f51abc86def in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f51a8658c00 (LWP 6226)):
#0  0x00007f51abc7a6d9 in __GI___poll (fds=0x2474d00, nfds=3, timeout=4996) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f51a8f96e46 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f51a8f96f6c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f51ac45adeb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /home/lastique/qtcreator-4.8.1/libexec/qtcreator/../../lib/Qt/lib/libQt5Core.so.5
#4  0x00007f51ac40257a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /home/lastique/qtcreator-4.8.1/libexec/qtcreator/../../lib/Qt/lib/libQt5Core.so.5
#5  0x00007f51ac40af80 in QCoreApplication::exec() () from /home/lastique/qtcreator-4.8.1/libexec/qtcreator/../../lib/Qt/lib/libQt5Core.so.5
#6  0x000000000040b5ff in main ()
[Inferior 1 (process 6226) detached]