https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120682
--- Comment #3 from Benjamin Schulz <schulz.benjamin at googlemail dot com> --- oh of course withotu std, so typedef myvec<double> doublevec; If one has to specify the datatype explicitly before one can use the openmp mapper, then the mapper pragma of openmp makes not much sense with templates, as the idea of templates is that one needs to specify the type only when directly using it and not before...