Linux QT4 app hangs on exit

[doggrant]

I changed the code as follows:

MainDialog dialog( 0, Qt::WindowMaximizeButtonHint | Qt::WindowMinimizeButtonHint );
dialog.show();
 
return app.exec();

MainDialog dialog( 0, Qt::WindowMaximizeButtonHint | Qt::WindowMinimizeButtonHint );
dialog.show();

return app.exec();

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But I still get the hang on Linux. Looking at the output from GDB, it's still the same as in my initial post.