Compiler error Dune 2.6 with clang 10
I get a compiler error with clang 10 here:
dune-istl/dune/istl/owneroverlapcopy.hh:292:18: error: assigning to 'SolverCategory::Category' from incompatible type 'Dune::SolverCategory'
category = set;
^~~I wonder how this could ever work? Fix in !389 (merged).