CGAL users discussion list

[Sylvain Pion <>]

Andrei Zaharescu a écrit :
> Hi everybody,
>
> I am encountering an error when using the CGAL library compiled with 
> optimization flags on mac intel (with -O1 or -O2 or -O3).
>
> Basically, if I try the provided examples from:
>
> /examples/Triangulation_2/regular
>
> I get some precondition violations. This does not happen when no 
> optimization flags are being used.
> Thanks in advance to everyone. The error occurs when invoking the    
> rt.is_valid() command.
>
> CGAL error: precondition violation!
> Expr: it1.e_ == it2.e_
> File: ../../include/CGAL/iterator.h
> Line: 563
> Explanation:
> terminate called after throwing an instance of 
> 'CGAL::Precondition_exception'
>   what():  CGAL ERROR: precondition violation!
> Expr: it1.e_ == it2.e_
> File: ../../include/CGAL/iterator.h
> Line: 563
> Abort trap

I can reproduce it in the same conditions.
Note that with g++ 4.2 (easily installed with Fink), it works, though.

I have no clue what can happen, don't have enough to dig into this.
I'd suggest you uncomment the precondition, it's not an important one.
Maybe a compiler bug...

--
Sylvain Pion
INRIA Sophia-Antipolis
Geometrica Project-Team
CGAL, http://cgal.org/

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