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  1. Qt Creator
  2. QTCREATORBUG-28415

Utils::Id() c'tor is not thread safe

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    • dc9cb0562a (qt-creator/qt-creator/9.0) dc9cb0562a (qt-creator/qt-creator/qds/dev) dc9cb0562a (qt-creator/qt-creator/master)

    Description

      The c'tor of Utils::Id() may potentially modify static cache (stringFromId and idFromString static QHash objects) and it's apparently called from various threads. E.g.:

      1  Utils::theId                                                                                                                                                                                                                                                                                                                                                                                                          id.cpp             86  0x7ffff7b05a87 
      2  Utils::Id::Id                                                                                                                                                                                                                                                                                                                                                                                                         id.cpp             123 0x7ffff7b05c8d 
      3  QmlJSEditor::Internal::QmlTaskManager::collectMessages                                                                                                                                                                                                                                                                                                                                                                qmltaskmanager.cpp 82  0x7fff7cd39bc7 
      4  Utils::Internal::runAsyncQFutureInterfaceDispatch<QmlJSEditor::Internal::QmlTaskManager::FileErrorMessages, void ( *)(QFutureInterface<QmlJSEditor::Internal::QmlTaskManager::FileErrorMessages>&, QmlJS::Snapshot, QList<QmlJS::ModelManagerInterface::ProjectInfo> const&, QmlJS::ViewerContext, bool), QmlJS::Snapshot, QList<QmlJS::ModelManagerInterface::ProjectInfo>, QmlJS::ViewerContext, bool>              runextensions.h    236 0x7fff7cd442a3 
      5  Utils::Internal::runAsyncMemberDispatch<QmlJSEditor::Internal::QmlTaskManager::FileErrorMessages, void ( *)(QFutureInterface<QmlJSEditor::Internal::QmlTaskManager::FileErrorMessages>&, QmlJS::Snapshot, QList<QmlJS::ModelManagerInterface::ProjectInfo> const&, QmlJS::ViewerContext, bool), QmlJS::Snapshot, QList<QmlJS::ModelManagerInterface::ProjectInfo>, QmlJS::ViewerContext, bool, void>                  runextensions.h    253 0x7fff7cd440f5 
      6  Utils::Internal::runAsyncImpl<QmlJSEditor::Internal::QmlTaskManager::FileErrorMessages, void ( *)(QFutureInterface<QmlJSEditor::Internal::QmlTaskManager::FileErrorMessages>&, QmlJS::Snapshot, QList<QmlJS::ModelManagerInterface::ProjectInfo> const&, QmlJS::ViewerContext, bool), QmlJS::Snapshot, QList<QmlJS::ModelManagerInterface::ProjectInfo>, QmlJS::ViewerContext, bool>                                  runextensions.h    282 0x7fff7cd43fb4 
      7  Utils::Internal::AsyncJob<QmlJSEditor::Internal::QmlTaskManager::FileErrorMessages, void ( *)(QFutureInterface<QmlJSEditor::Internal::QmlTaskManager::FileErrorMessages>&, QmlJS::Snapshot, QList<QmlJS::ModelManagerInterface::ProjectInfo> const&, QmlJS::ViewerContext, bool), QmlJS::Snapshot, QList<QmlJS::ModelManagerInterface::ProjectInfo>, QmlJS::ViewerContext, bool&>::runHelper<0ul, 1ul, 2ul, 3ul, 4ul> runextensions.h    351 0x7fff7cd43e00 
      8  Utils::Internal::AsyncJob<QmlJSEditor::Internal::QmlTaskManager::FileErrorMessages, void ( *)(QFutureInterface<QmlJSEditor::Internal::QmlTaskManager::FileErrorMessages>&, QmlJS::Snapshot, QList<QmlJS::ModelManagerInterface::ProjectInfo> const&, QmlJS::ViewerContext, bool), QmlJS::Snapshot, QList<QmlJS::ModelManagerInterface::ProjectInfo>, QmlJS::ViewerContext, bool&>::run                                runextensions.h    331 0x7fff7cd43c83 
      9  Utils::Internal::RunnableThread::run                                                                                                                                                                                                                                                                                                                                                                                  runextensions.cpp  17  0x7ffff7bf32a3 
      10 operator()                                                                                                                                                                                                                                                                                                                                                                                                            qthread_unix.cpp   355 0x7ffff55ba071 
      11 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void *)::<lambda()>>(struct {...} &&)                                                                                                                                                                                                                                                                                                             qthread_unix.cpp   291 0x7ffff55bb193 
      12 QThreadPrivate::start                                                                                                                                                                                                                                                                                                                                                                                                 qthread_unix.cpp   314 0x7ffff55ba13d 
      13 start_thread                                                                                                                                                                                                                                                                                                                                                                                                          pthread_create.c   442 0x7ffff4dbeb43 
      14 clone3                                                                                                                                                                                                                                                                                                                                                                                                                clone3.S           81  0x7ffff4e50a00 
      

      This isn't thread safe and access to stringFromId and idFromString should be secured.

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            jkobus Jarek Kobus
            jkobus Jarek Kobus
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