QSlider crash on OS X after setMinimum

I have a QSlider on my window.

I do :
slider->setMaximum(500);
but if I do :

slider->setMinimum;

For 62 <= x <= 66, I get a crash (Division by zero in QMacStylePrivate::getSliderInfo). Trace is attached.
It works for x < 62 and x > 66.

This works without problems on Linux.