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[Yue Biek <>]

Thank you , I will try this way.

2011/5/16 Marc Glisse <>

On Mon, 16 May 2011, Sebastien Loriot (GeometryFactory) wrote:

The problem you have comes from the fact that x() and y() don't return
references. Due to the type_equality_wrapper (the mechanism making Kernel::Point_2 and Point_2<kernel> being compatible), a reference to
a temporary is returned at some point.

You should write:
       const MP_FT& x() const {return *pos;}
       const MP_FT& y() const {return *(pos+1);}

Or provide your own Compute_x_2 functor, as having a reference return type in the wrapper depends on the Compute_x_2 functor deriving from Has_qrt (but indeed returning the type by reference is better).

--
Marc Glisse

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