What an Interesting question, who know why?



  • Add the code below and save it into a test.cpp.
    Open test.cpp by Qt Creator 3.5.1 (Qt Version: 5.5.1, VS2010, WIN7), then CPU...

    0_1515136360850_oh.png

    #include <map>
    using namespace std;
    static map<int, int> testMap;
    void test()
    {
        map<int, int>::iterator it;
        for (it = testMap.begin(); it != testMap.end(); ++it)
        {
            int value = it->second;
        }
    }
    


  • Hi @zhangsi

    QtCreator 3.5.1 is quite old and will not get any more fixes. Try updating to 4.5. If the problem still exists, create a bugreport at bugreports.qt.io

    Thanks


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