Matrix Iterator fails to build with clang 3.5
Fails with clang 3.5 throwing the following error (gcc does not complain):
/temp/timok/buildbot/balu/clang35-dune-master/dune-istl/dune/istl/matrix.hh:409:9: error: use of non-static data member 'columns_' of 'DenseMatrixBase' from nested type 'ConstIterator' columns_ = 0; ^~~~~~~~
Iterator::columns_ = 0; fixes it for me. Is that the correct fix?