CGAL users discussion list

[Bernhard Kornberger <>]

Andreas Fabri schrieb:
> Hi Bernard,
>
> Which compiler.
> Does this happen in debug or release mode, or both?
> Do you have GMP installed?
>
> andreas

Hi Andreas!


g++ --version
g++ (GCC) 4.1.2 (Ubuntu 4.1.2-0ubuntu4)

  **   OS:          i686_Linux-2.6                              **
  **   Compiler:    GNU 4.1.2                                   **
  **   Support for: BOOST, BOOST_PROGRAM_OPTIONS, X11, GMP,     **
  **                GMPXX, MPFR, ZLIB, and OPENGL.              **


You should be able to reproduce the error. It is the example
"CGAL-3.3/examples/Triangulation_2/regular.cpp", compiled with
the original Makefile. The only thing I've changed is the
Kernel:

#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
typedef CGAL::Exact_predicates_exact_constructions_kernel K;

and the input file:

CGAL-3.3/examples/Triangulation_2 $ cat data/regular.cin
62.5 55 1563.24553641
93.9083 55 965.655625
123.495 26.5053 760.67294809
124.307 25.6932 716.53653124
124.819 25.1811 689.38278721
112.5 48.6286 1488.030625
112.5 47.2573 1488.030625
112.5 45.8859 1488.030625
112.5 50 1488.030625
112.5 55 1563.24553641


The error does not occur with -DCGAL_NO_ASSERTIONS (thx. for the hint)
but obviously something is wrong.

Best regards
Bernhard