Assertion fail (iseuil) when trunc

General Discussion
1

Dear developper,

I encounter an assertion fails with some 2D meshes that I didn’t have before. Again these problems with the trunc function (which should be combinatorial, not ?)!
Th.o.mesh (197.0 KB)

The following code fails:

mesh Th=readmesh("Th.o.mesh");
mesh Thf=trunc(Th,region==3);

Many thanks in advance for your help.

Regards