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Re: [cgal-discuss] make_mesh_3 assertion violation in Triangulation_ds_cell_base_3


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  • From: "Laurent Rineau (CGAL/GeometryFactory)" <>
  • To:
  • Subject: Re: [cgal-discuss] make_mesh_3 assertion violation in Triangulation_ds_cell_base_3
  • Date: Mon, 21 Sep 2020 17:56:44 +0200
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  • Organization: GeometryFactory
On Sunday, September 20, 2020 9:14:51 PM CEST Kim wrote:
> Yes, I call poissonSurfaceReconstruction->compute_implicit_function() in a
> non-parallel context.
>
> Bellow I have added a minimal example that results in the assertion
> violation when I compile it for parallel use but works fine when I compile
> it for non-parallel use. Probably should have created and posted it from the
> beginning, my apologies I didn't.

Thanks for the repro.

I could reproduce it, and I found out that Poisson_reconstruction_function.h
is not thread-safe: have a look at include/CGAL/
Poisson_reconstruction_function.h:851

The value cell->info() is initialized lazily in a non-safe way.

--
Laurent Rineau, PhD
R&D Engineer at GeometryFactory http://www.geometryfactory.com/
Release Manager of the CGAL Project http://www.cgal.org/




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