=================================================================
==14610==ERROR: AddressSanitizer: heap-use-after-free on address 0x6210023e1138 at pc 0x7f4f598b2551 bp 0x7f4f3faf3a20 sp 0x7f4f3faf3a10
READ of size 8 at 0x6210023e1138 thread T50 (QThread)
qtc.clangbackend.jobs: Document revision changed for results of Job<192,"clangcodemodelserver-test.cpp",UpdateAnnotations,PreviouslyParsed>
qtc.clangbackend.jobs: [ clangcodemodelserver-test.cpp ] Finishing Job<192,"clangcodemodelserver-test.cpp",UpdateAnnotations,PreviouslyParsed>
qtc.clangbackend.jobs: [ clangcodemodelserver-test.cpp ] Not choosing due to dirty document: Job<200,"clangcodemodelserver-test.cpp",UpdateExtraAnnotations,RecentlyParsed>
qtc.clangbackend.jobs: [ clangcodemodelserver-test.cpp ] Not choosing due to dirty document: Job<201,"clangcodemodelserver-test.cpp",RequestReferences,RecentlyParsed>
qtc.clangbackend.jobs: [ clangcodemodelserver-test.cpp ] Running Job<199,"clangcodemodelserver-test.cpp",UpdateAnnotations,PreviouslyParsed> with TranslationUnit {7de1a73d-c24e-4a94-8aa8-d0a18a8a7ea9}
    #0 0x7f4f598b2550 in clang::CodeCompletionString::size() const (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x33af550)
    #1 0x7f4f598a74d3 in clang_getNumCompletionChunks (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x33a44d3)
    #2 0x55ef50e08193 in ClangBackEnd::CodeCompletionsExtractor::extractText() source/codecompletionsextractor.cpp:241
    #3 0x55ef50e09c93 in ClangBackEnd::CodeCompletionsExtractor::next() source/codecompletionsextractor.cpp:60
    #4 0x55ef50e0ba92 in ClangBackEnd::CodeCompletionsExtractor::extractAll(bool) source/codecompletionsextractor.cpp:98
    #5 0x55ef50e057a8 in toCodeCompletions source/codecompleter.cpp:59
    #6 0x55ef50e057a8 in ClangBackEnd::CodeCompleter::complete(unsigned int, unsigned int, int, int) source/codecompleter.cpp:123
    #7 0x55ef50df5c9b in ClangBackEnd::TranslationUnit::complete(ClangBackEnd::UnsavedFiles&, unsigned int, unsigned int, int, int) const source/clangtranslationunit.cpp:118
    #8 0x55ef50daf3f7 in operator() source/clangcompletecodejob.cpp:54
    #9 0x55ef50daf3f7 in _M_invoke /usr/include/c++/7/bits/std_function.h:302
    #10 0x55ef50db2f35 in std::function<QVector<ClangBackEnd::CodeCompletion> ()>::operator()() const /usr/include/c++/7/bits/std_function.h:706
    #11 0x55ef50db2f35 in void Utils::Internal::runAsyncReturnVoidDispatch<QVector<ClangBackEnd::CodeCompletion>, std::function<QVector<ClangBackEnd::CodeCompletion> ()>>(std::integral_constant<bool, false>, QFutureInterface<QVector<ClangBackEnd::CodeCompletion> >, std::function<QVector<ClangBackEnd::CodeCompletion> ()>&&) ../../libs/utils/runextensions.h:250
    #12 0x55ef50db2f35 in void Utils::Internal::runAsyncQFutureInterfaceDispatch<QVector<ClangBackEnd::CodeCompletion>, std::function<QVector<ClangBackEnd::CodeCompletion> ()>>(std::integral_constant<bool, false>, QFutureInterface<QVector<ClangBackEnd::CodeCompletion> >, std::function<QVector<ClangBackEnd::CodeCompletion> ()>&&) ../../libs/utils/runextensions.h:264
    #13 0x55ef50db2f35 in void Utils::Internal::runAsyncMemberDispatch<QVector<ClangBackEnd::CodeCompletion>, std::function<QVector<ClangBackEnd::CodeCompletion> ()>, , void>(QFutureInterface<QVector<ClangBackEnd::CodeCompletion> >, std::function<QVector<ClangBackEnd::CodeCompletion> ()>&&) ../../libs/utils/runextensions.h:274
    #14 0x55ef50db3606 in void Utils::Internal::runAsyncImpl<QVector<ClangBackEnd::CodeCompletion>, std::function<QVector<ClangBackEnd::CodeCompletion> ()>>(QFutureInterface<QVector<ClangBackEnd::CodeCompletion> >, std::function<QVector<ClangBackEnd::CodeCompletion> ()>&&) ../../libs/utils/runextensions.h:303
    #15 0x55ef50db3606 in void Utils::Internal::AsyncJob<QVector<ClangBackEnd::CodeCompletion>, std::function<QVector<ClangBackEnd::CodeCompletion> ()>&>::runHelper<0ul>(std::integer_sequence<unsigned long, 0ul>) ../../libs/utils/runextensions.h:372
    #16 0x55ef50db3606 in Utils::Internal::AsyncJob<QVector<ClangBackEnd::CodeCompletion>, std::function<QVector<ClangBackEnd::CodeCompletion> ()>&>::run() ../../libs/utils/runextensions.h:352
    #17 0x7f4f6b98b4bc in Utils::Internal::RunnableThread::run() (/d1/creator/ut/4.8/release/libexec/qtcreator/../../lib/qtcreator/libUtils.so.4+0x1664bc)
    #18 0x7f4f55ac2563 in QThreadPrivate::start(void*) (/home/nik/opt/qt-5.11.2/5.11.2/gcc_64/lib/libQt5Core.so.5+0xae563)
    #19 0x7f4f54a5e6da in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x76da)
    #20 0x7f4f551a388e in __clone (/lib/x86_64-linux-gnu/libc.so.6+0x12188e)

0x6210023e1138 is located 56 bytes inside of 4096-byte region [0x6210023e1100,0x6210023e2100)
freed by thread T51 (QThread) here:
    #0 0x7f4f6c26c7b8 in __interceptor_free (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xde7b8)
    #1 0x7f4f5981009d in llvm::MallocAllocator::Deallocate(void const*, unsigned long) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x330d09d)
    #2 0x7f4f598c1ef4 in llvm::BumpPtrAllocatorImpl<llvm::MallocAllocator, 4096ul, 4096ul>::DeallocateSlabs(void**, void**) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x33beef4)
    #3 0x7f4f598c1c3e in llvm::BumpPtrAllocatorImpl<llvm::MallocAllocator, 4096ul, 4096ul>::~BumpPtrAllocatorImpl() (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x33bec3e)
    #4 0x7f4f598c163b in clang::CodeCompletionAllocator::~CodeCompletionAllocator() (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x33be63b)
    #5 0x7f4f598c28f1 in clang::GlobalCodeCompletionAllocator::~GlobalCodeCompletionAllocator() (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x33bf8f1)
    #6 0x7f4f598c2911 in void __gnu_cxx::new_allocator<clang::GlobalCodeCompletionAllocator>::destroy<clang::GlobalCodeCompletionAllocator>(clang::GlobalCodeCompletionAllocator*) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x33bf911)
    #7 0x7f4f598c28c8 in void std::allocator_traits<std::allocator<clang::GlobalCodeCompletionAllocator> >::destroy<clang::GlobalCodeCompletionAllocator>(std::allocator<clang::GlobalCodeCompletionAllocator>&, clang::GlobalCodeCompletionAllocator*) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x33bf8c8)
    #8 0x7f4f598c25fe in std::_Sp_counted_ptr_inplace<clang::GlobalCodeCompletionAllocator, std::allocator<clang::GlobalCodeCompletionAllocator>, (__gnu_cxx::_Lock_policy)2>::_M_dispose() (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x33bf5fe)
    #9 0x7f4f5984f7fa in std::_Sp_counted_base<(__gnu_cxx::_Lock_policy)2>::_M_release() (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x334c7fa)
    #10 0x7f4f59839073 in std::__shared_count<(__gnu_cxx::_Lock_policy)2>::~__shared_count() (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x3336073)
    #11 0x7f4f598358ed in std::__shared_ptr<clang::GlobalCodeCompletionAllocator, (__gnu_cxx::_Lock_policy)2>::~__shared_ptr() (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x33328ed)
    #12 0x7f4f598ba962 in std::__shared_ptr<clang::GlobalCodeCompletionAllocator, (__gnu_cxx::_Lock_policy)2>::operator=(std::__shared_ptr<clang::GlobalCodeCompletionAllocator, (__gnu_cxx::_Lock_policy)2>&&) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x33b7962)
    #13 0x7f4f598b7b09 in std::shared_ptr<clang::GlobalCodeCompletionAllocator>::operator=(std::shared_ptr<clang::GlobalCodeCompletionAllocator>&&) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x33b4b09)
    #14 0x7f4f5a37f800 in clang::ASTUnit::ClearCachedCompletionResults() (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x3e7c800)
    #15 0x7f4f5a37df68 in clang::ASTUnit::CacheCodeCompletionResults() (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x3e7af68)
    #16 0x7f4f5a390660 in clang::ASTUnit::Reparse(std::shared_ptr<clang::PCHContainerOperations>, llvm::ArrayRef<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, llvm::MemoryBuffer*> >, llvm::IntrusiveRefCntPtr<clang::vfs::FileSystem>) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x3e8d660)
    #17 0x7f4f597cf4a6 in clang_reparseTranslationUnit_Impl(CXTranslationUnitImpl*, llvm::ArrayRef<CXUnsavedFile>, unsigned int) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x32cc4a6)
    #18 0x7f4f597cf7ad in clang_reparseTranslationUnit::{lambda()#1}::operator()() const (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x32cc7ad)
    #19 0x7f4f598084cb in void llvm::function_ref<void ()>::callback_fn<clang_reparseTranslationUnit::{lambda()#1}>(long) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x33054cb)
    #20 0x7f4f5df9976b in llvm::function_ref<void ()>::operator()() const (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x7a9676b)
    #21 0x7f4f5df98fad in llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x7a95fad)
    #22 0x7f4f597fe53f in clang::RunSafely(llvm::CrashRecoveryContext&, llvm::function_ref<void ()>, unsigned int) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x32fb53f)
    #23 0x7f4f597cfc68 in clang_reparseTranslationUnit (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x32ccc68)
    #24 0x55ef50dfb2f7 in ClangBackEnd::TranslationUnitUpdater::reparse() source/clangtranslationunitupdater.cpp:147
    #25 0x7f4f4ba3fa1f  (<unknown module>)

previously allocated by thread T47 (QThread) here:
    #0 0x7f4f6c26cb50 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb50)
    #1 0x7f4f597a4cf2 in llvm::safe_malloc(unsigned long) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x32a1cf2)
    #2 0x7f4f5981007b in llvm::MallocAllocator::Allocate(unsigned long, unsigned long) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x330d07b)
    #3 0x7f4f59853e5b in llvm::BumpPtrAllocatorImpl<llvm::MallocAllocator, 4096ul, 4096ul>::StartNewSlab() (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x3350e5b)
    #4 0x7f4f5983e2ee in llvm::BumpPtrAllocatorImpl<llvm::MallocAllocator, 4096ul, 4096ul>::Allocate(unsigned long, unsigned long) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x333b2ee)
    #5 0x7f4f5aabd7c6 in clang::CodeCompletionAllocator::CopyString(llvm::Twine const&) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x45ba7c6)
    #6 0x7f4f5ab73dcf in AddTypedNameChunk(clang::ASTContext&, clang::PrintingPolicy const&, clang::NamedDecl const*, clang::CodeCompletionBuilder&) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x4670dcf)
    #7 0x7f4f5ab75fb0 in clang::CodeCompletionResult::CreateCodeCompletionString(clang::ASTContext&, clang::Preprocessor&, clang::CodeCompletionContext const&, clang::CodeCompletionAllocator&, clang::CodeCompletionTUInfo&, bool) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x4672fb0)
    #8 0x7f4f5ab74322 in clang::CodeCompletionResult::CreateCodeCompletionString(clang::Sema&, clang::CodeCompletionContext const&, clang::CodeCompletionAllocator&, clang::CodeCompletionTUInfo&, bool) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x4671322)
    #9 0x7f4f5a37e40e in clang::ASTUnit::CacheCodeCompletionResults() (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x3e7b40e)
    #10 0x7f4f5a390660 in clang::ASTUnit::Reparse(std::shared_ptr<clang::PCHContainerOperations>, llvm::ArrayRef<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, llvm::MemoryBuffer*> >, llvm::IntrusiveRefCntPtr<clang::vfs::FileSystem>) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x3e8d660)
    #11 0x7f4f597cf4a6 in clang_reparseTranslationUnit_Impl(CXTranslationUnitImpl*, llvm::ArrayRef<CXUnsavedFile>, unsigned int) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x32cc4a6)
    #12 0x7f4f597cf7ad in clang_reparseTranslationUnit::{lambda()#1}::operator()() const (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x32cc7ad)
    #13 0x7f4f598084cb in void llvm::function_ref<void ()>::callback_fn<clang_reparseTranslationUnit::{lambda()#1}>(long) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x33054cb)
    #14 0x7f4f5df9976b in llvm::function_ref<void ()>::operator()() const (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x7a9676b)
    #15 0x7f4f5df98fad in llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x7a95fad)
    #16 0x7f4f597fe53f in clang::RunSafely(llvm::CrashRecoveryContext&, llvm::function_ref<void ()>, unsigned int) (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x32fb53f)
    #17 0x7f4f597cfc68 in clang_reparseTranslationUnit (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x32ccc68)
    #18 0x55ef50dfb2f7 in ClangBackEnd::TranslationUnitUpdater::reparse() source/clangtranslationunitupdater.cpp:147
    #19 0x60700010ea7f  (<unknown module>)

Thread T50 (QThread) created by T0 here:
    #0 0x7f4f6c1c5d2f in __interceptor_pthread_create (/usr/lib/x86_64-linux-gnu/libasan.so.4+0x37d2f)
    #1 0x7f4f55ac1c57 in QThread::start(QThread::Priority) (/home/nik/opt/qt-5.11.2/5.11.2/gcc_64/lib/libQt5Core.so.5+0xadc57)

Thread T51 (QThread) created by T0 here:
    #0 0x7f4f6c1c5d2f in __interceptor_pthread_create (/usr/lib/x86_64-linux-gnu/libasan.so.4+0x37d2f)
    #1 0x7f4f55ac1c57 in QThread::start(QThread::Priority) (/home/nik/opt/qt-5.11.2/5.11.2/gcc_64/lib/libQt5Core.so.5+0xadc57)

Thread T47 (QThread) created by T0 here:
    #0 0x7f4f6c1c5d2f in __interceptor_pthread_create (/usr/lib/x86_64-linux-gnu/libasan.so.4+0x37d2f)
    #1 0x7f4f55ac1c57 in QThread::start(QThread::Priority) (/home/nik/opt/qt-5.11.2/5.11.2/gcc_64/lib/libQt5Core.so.5+0xadc57)

SUMMARY: AddressSanitizer: heap-use-after-free (/d2/llvm/7/qtc/installs/Release/lib/libclang.so.7+0x33af550) in clang::CodeCompletionString::size() const
Shadow bytes around the buggy address:
  0x0c42804741d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c42804741e0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c42804741f0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c4280474200: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c4280474210: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x0c4280474220: fd fd fd fd fd fd fd[fd]fd fd fd fd fd fd fd fd
  0x0c4280474230: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0c4280474240: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0c4280474250: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0c4280474260: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0c4280474270: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07 
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
==14610==ABORTING