I am trying use qt in windows 10 and when i try unload qt libraries it is behaving to crash application. I am analysed code and find bug in Qt5Core library in file qlibrary.cpp. You are deleting pointer on smart object in line 550 (delete inst.data()). Please, fix it.

bool QLibraryPrivate::unload(UnloadFlag flag)
{
if (!pHnd)

{ return false; }

if (libraryUnloadCount.load() > 0 && !libraryUnloadCount.deref()) { // only unload if ALL QLibrary instance wanted to
delete inst.data();
if (flag == NoUnloadSys || unload_sys())

{ if (qt_debug_component()) qWarning() << "QLibraryPrivate::unload succeeded on" << fileName << (flag == NoUnloadSys ? "(faked)" : ""); //when the library is unloaded, we release the reference on it so that 'this' //can get deleted libraryRefCount.deref(); pHnd = 0; instance = 0; }

}

return (pHnd == 0);
}