qapplication hang

[yanghang]

i develop a qt application, but it hang at one computer.

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    teststucks w;
    w.show();
    return a.exec();
}

i create a dump and debug, the stack is like this:

[JonB]

@yanghang
I think you have some unknown "nasty behaviour" on that computer! While it ought not "hang", I would be concerned that the stack trace shows something is trying to do a QMessageLogger::warning(). It would be nice to see what that message is. I don't know whether if you installed your own qInstallMessageHandler() first thing that would get called before the QMessageLogger::warning() causes hang.

[JoeCFD]

https://forum.qt.io/topic/125753/faulting-module-path-c-windows-system32-ntdll-dll/2
https://bugreports.qt.io/browse/QTBUG-67969
https://stackoverflow.com/questions/25231873/release-does-not-run-this-application-failed-to-start
it could be ntdll.dll related bug.