Details
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Bug
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Resolution: Done
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P3: Somewhat important
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5.1.0
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None
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Windows 7 x64
VS2010
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7dc622290bb8e81af634034f443e25be0d6d48a3 950b35cf97ad398f97883efd2a18ee97994a8a9c
Description
A QThreadData object leak of the main thread(GUI thread) has been introduced in change https://codereview.qt-project.org/#change,45187
Run the following program in VS2010, you can see the leak report
int main(int argc, char *argv[]) { QApplication a(argc, argv); QWidget w; w.show(); int ret = a.exec(); // turn on memory leak detection int nCrtDbgFlag = _CrtSetDbgFlag(_CRTDBG_REPORT_FLAG); nCrtDbgFlag |= _CRTDBG_LEAK_CHECK_DF; _CrtSetDbgFlag(nCrtDbgFlag); return ret; }
The removed lines in src/corelib/kernel/qcoreapplication.cpp caused this leak, it prevent the refcount of QThreadData from being dropped to zero on app exit.