https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79766
Nathan Sidwell <nathan at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords|rejects-valid |accepts-invalid --- Comment #1 from Nathan Sidwell <nathan at gcc dot gnu.org> --- Looking at [7.3.1]/7 I think the use of 'Y::Q' to define Y::X::Q is ill-formed. Naming 'Q' in 'Y' for its definition is not one of the permitted uses.