compiz/kde/window-decorator/window.cpp function KWD::Window::updateProperty (void)
At line 1360: mDecor->borders (maxExtents.left, maxExtents.right,
"mDecor" gets derefenced
Later at line 1382: if (mDecor)
Either mDecor should be NULL-checked before first dereference at line 1360,
or that later NULL-check is unnecessary.