On Fri, Oct 16, 2020 at 11:59 AM Roger Bivand <roger.biv...@nhh.no> wrote:

> Cases 794 and 936 are all-by-all intersections, and as noted in the latter
> issue, the problems occurring differ by input order.
>

Well, that's disappointing that 794 and 936 still have failures.
Especially because 794 was also reported as JTS 300:

https://github.com/locationtech/jts/issues/300

and the test data there is incoporated in the robustness test suilte in
both JTS [1] and GEOS [2] , where it passes using OverlayNG.

Is there any way to get a dump of the actual input geometries to GEOS which
are causing these errors?

[1]
https://github.com/locationtech/jts/blob/master/modules/tests/src/test/resources/testxml/robust/overlay/TestOverlay-jts-300.xml
[2]
https://git.osgeo.org/gitea/geos/geos/src/branch/master/tests/xmltester/tests/robust/overlay/TestOverlay-jts-300.xml
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