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[cgal-discuss] Re: lib-gmp hang with CGAL bezier curves on OS X


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  • From: Ben Supnik <>
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  • Subject: [cgal-discuss] Re: lib-gmp hang with CGAL bezier curves on OS X
  • Date: Sun, 26 Sep 2010 10:53:12 -0400

Hi Y'all,

Follow-up in case anyone else hits this...it turns out that if you try to build gmp-4.3.1 on OS X for multiple architectures on a 64-bit Intel Mac, the resulting libraries will be buggy for all but one architecture. I don't think this is a gmp bug so much as a design limitation in how the library is structured. The build will pass its own make check tests, but then produce incorrect results in a 32-bit app.

It became clear that the bug was in gmp and not CGAL when I turned on full gmp debugging and gmp's internal assertions started firing off.

cheers
Ben


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