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Bug
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    Resolution: Done
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P2: Important
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    4.8.4, 5.0.2
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    None
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    Windows,OSX
 
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        69c05bbef47fb9d30d70e594bd5942add8b135fe, qt4:f8fdc82e88dd4546062ee220712c300a654472b9
 
QProgressDialog some time meets divide by zero and crashes. Attached example reproduces it on both Qt 4 and Qt5.