CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

With the data and example file provided I can reproduce the problem
you are facing (even with the latest development version of the
package). This is probably a bug, we will find a solution and post it
here.

S.



Gene wrote:
> Thanks, using version 3.7, the error no longer appears.  However, this
> example came from a larger data set that gives a different error
> now--one which is harder to localize.  Therefore, I have included the
> larger dataset along with a new test program.
>
> The error I get is:
> --------
> terminate called after throwing an instance of
> 'CGAL::Precondition_exception'
>   what():  CGAL ERROR: precondition violation!
> Expr: ! _predP->is_valid() || comp_f(object, _predP->object) != SMALLER
> File: /usr/local/include/CGAL/Multiset.h
> Line: 2142
> Abort
> --------
>
> The error only appears if I load the curves using the iterator version
> of `insert'.  When I load the curves one at a time, it USUALLY works,
> but sometimes I get the following error:
> --------
> terminate called after throwing an instance of 'CGAL::Assertion_exception'
>   what():  CGAL ERROR: assertion violation!
> Expr: CGAL::compare (pt_org->point_bound().t_max,
> ps_org->point_bound().t_min) == SMALLER
> File: /usr/local/include/CGAL/Arr_geometry_traits/Bezier_x_monotone_2.h
> Line: 2564
> Abort
> --------
>
> When this error appears, it is not attached to a specific point, but
> it may appear at different times during loading.  Obviously, it's
> disturbing that it only appears sometimes and not all the time.
>
> http://cgal-discuss.949826.n4.nabble.com/file/n3067817/test_curve2.cpp
> test_curve2.cpp 
> http://cgal-discuss.949826.n4.nabble.com/file/n3067817/curves.dat curves.dat 
> http://cgal-discuss.949826.n4.nabble.com/file/n3067817/arr_print.h
> arr_print.h