I am using qtwebkit 2.3.3 built from git against qt 4.8.5 (Windows 7 and Visual Studio 2008). I get a crash with the release version (works in debug) using the previewer example from Qt and loading a simple webpage like this:
var isDocAllNull = document.all == null;
Test page with document.all compared to null.
The problem does not appear in the older Qt 4.8.5.
I am able to reproduce this error in Qt 5.1.1 (also using the Previewer example).
The problem is fixed in Qt 5.2.1.
I would need a patch for qtwebkit 2.3.3 if anyone can help. Some suggestions on how to debug this (considering that the error does not occur in debug mode) would also be very helpful.