[Development] Fixing QRect::width() / height()

Marc Mutz marc.mutz at kdab.com
Tue Mar 15 19:06:50 CET 2016

On Tuesday 15 March 2016 15:43:09 Poenitz Andre wrote:
> > It's not impossible that this could be
> > exploited, too, e.g. if the app divides by a non-isNull rect's width and
> > the attacker forges the coordinates such that width() return 0
> Please describe how that can happen. 

Run tst_qrect,  isNull(LargestCoordQRect) produces true even though the rect 
is definitely not null.

Marc Mutz <marc.mutz at kdab.com> | Senior Software Engineer
KDAB (Deutschland) GmbH & Co.KG, a KDAB Group Company
Tel: +49-30-521325470
KDAB - The Qt Experts

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