Without this include, 'assert' was not defined for me in
dune/istl/paamg/pinfo.hh. Does not seem to be a problem on Travis, but
adding the include does not hurt.
Removing the locking might fix https://github.com/dune-community/dune-xt-grid/issues/89.
Without this include, 'assert' was not defined for me in dune/istl/paamg/pinfo.hh. Does not seem to be a problem on Travis, but adding the include does not hurt. Removing the locking might fix https://github.com/dune-community/dune-xt-grid/issues/89.