[dune-pdelab] ambiguosity in istlsolverbackend.hh

[Bernd Flemisch]

Dear Dune-PDELab,

the instantiation of a BlockProcessorHelper<GFS, true, 1> yields an error

istlsolverbackend.hh:384: error: ambiguous class template instantiation
for ‘struct
Dune::PDELab::<unnamed>::BlockProcessorHelper<Dune::PDELab::PowerGridFunctionSpace<Dune::PDELab::GridFunctionSpace<Dune::GridView<Dune::DefaultLeafGridViewTraits<const
Dune::UGGrid<3>, All_Partition> >,
Dune::PDELab::Q1LocalFiniteElementMap<double, double, 3>,
Dune::NonoverlappingBoxDirichletConstraints<Dune::Properties::TTag::OnePTestProblem>,
Dune::PDELab::ISTLVectorBackend<1>,
Dune::PDELab::GridFunctionGeneralMapper>, 1,
Dune::PDELab::GridFunctionSpaceBlockwiseMapper>, true, 1>’
istlsolverbackend.hh:311: error: candidates are: struct
Dune::PDELab::<unnamed>::BlockProcessorHelper<GFS, b, 1>
istlsolverbackend.hh:345: error: struct
Dune::PDELab::<unnamed>::BlockProcessorHelper<GFS, true, k>

I solved it by specializing
template<typename GFS>
struct BlockProcessorHelper<GFS, true, 1>
{
// copied from BlockProcessorHelper<GFS, true, k>
};

Kind regards
Bernd

-- 
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Bernd Flemisch                               phone: +49 711 685 69162
IWS, Universität Stuttgart                   fax:   +49 711 685 60430
Pfaffenwaldring 61                  email: bernd at iws.uni-stuttgart.de
D-70569 Stuttgart                  url: www.hydrosys.uni-stuttgart.de
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