dolfin team mailing list archive

[Andre Massing <massing@xxxxxxxxx>]

Den 18.01.11 21.46, skrev Garth N. Wells:
> On 18/01/11 20:28, Florian Rathgeber wrote:
> > Hi,
> >
> > Just a sneak preview: when using the current boost release 1.45.0 (which
> > isn't packaged on the major distributions yet) DOLFIN build breaks:
> >
> > In IntersectionOperatorImplementation there are conflicts with
> > boost::optional and the
> >    error: dereferencing pointer \u2018<anonymous>\u2019 does break
> > strict-aliasing rules
> > is thrown (boost/optional/optional.hpp 317, 424)
> >
> > It works using gcc 4.5 though, hence it shouldn't be much of a problem
> > (unless of course you want to use CUDA: nvcc isn't compatible to gcc 4.5).
>
> Thanks - useful to be proactive in resolving issues like this.
>
> It looks like boost::optional is being used as a bit of sugar.
>
> Andre: can it be easily removed?

It it actually used by the CGAL search tree and as such part of the CGAL
code. I wrapped it such that it is not visible in the upper layers but
as long as we want to have the "find any intersected entity"
functionality via CGAL it is unfortunately not possible to get rid of
boost::optional.

--
Andre


> Garth
>
> > Florian
>
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--
André Massing       		email: massing@xxxxxxxxx
Ph.D. student			mobile: +47 469 57 401
Simula Research Laboratory
NO-1367 Fornebu, Norway


--
André Massing       		email: massing@xxxxxxxxx
Ph.D. student			mobile: +47 469 57 401
Simula Research Laboratory
NO-1367 Fornebu, Norway