Commit 26395 introduced a check for self-intersecting polygons. The code is not straigtforward but involves some equations which can easily implemented in a way that does not work like expected.
A unit test should verify that the checks are working correctly.
Testing bugs are part of their respective modules -> changing component to other, please assign appropriate component.
Resetting all bugs without active assignee flag to "CONFIRMED". Change status to IN_PROGRESS if you are working on it.
@Daniel: after some reassignments of this bug I think you can estimate the best how important this is. Is the intersection code still used? In critical functions?
(In reply to Marco Nolden from comment #3)
@Daniel: after some reassignments of this bug I think you can estimate the
best how important this is. Is the intersection code still used? In critical
functions?
This would definitely be a useful test. The intersection test is still in use (see code of PlanarPolygon). If self-intersection is detected, no features such as "area" are evaluated. Since these features are not intuitive for self-intersecting figures, their non-calculation is meaningful.
I don't know of "critical" functions that are untested.