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[たまちゃん <>]

Hello Everyone,

I am getting an error in CGAL::intersection sometimes. I wrote sample code below. How do I fix this error?

Thanks in advance!

Regards,

tamachan

Sample code (alwaysdie.cpp):

#include <CGAL/Exact_predicates_exact_constructions_kernel.h>

//#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>

#include <CGAL/Boolean_set_operations_2.h>

#include <list>

typedef CGAL::Exact_predicates_exact_constructions_kernel Kernel;

//typedef CGAL::Exact_predicates_inexact_constructions_kernel Kernel;

typedef Kernel::Point_2                                   Point_2;

typedef CGAL::Polygon_2<Kernel>                           Polygon_2;

typedef CGAL::Polygon_with_holes_2<Kernel>                Polygon_with_holes_2;

typedef std::list<Polygon_with_holes_2>                   Pwh_list_2;

#define SWITCH_Q     2

int main ()

{

  Polygon_2 P;

  P.push_back (Point_2 (0.0, 0.0));

  P.push_back (Point_2 (3.0, 3.0));

  P.push_back (Point_2 (2.0, 2.0));

  Polygon_2 Q;

#if SWITCH_Q==0

  Q.push_back (Point_2 (1.0, 1.0));

  Q.push_back (Point_2 (3.0, 1.0));

  Q.push_back (Point_2 (2.0, 1.0));

#elif SWITCH_Q==1

  Q.push_back (Point_2 (-1.0,2.0));

  Q.push_back (Point_2 (5.0, 2.0));

  Q.push_back (Point_2 (4.0, 2.0));

#else

  Q.push_back (Point_2 (0.0, 0.0));

  Q.push_back (Point_2 (2.0, 2.0));

  Q.push_back (Point_2 (1.0, 1.0));

#endif

  

  Pwh_list_2                  intR;

  Pwh_list_2::const_iterator  it;

  CGAL::intersection (P, Q, std::back_inserter(intR)); // !!!!!!! <<< Access Violation here !!!!!!!!!

  return 0;

}