http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53402
frankhb1989 at gmail dot com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |frankhb1989 at gmail dot com --- Comment #2 from frankhb1989 at gmail dot com --- Confirmed in 4.8.1. PS. Clang(trunk) treats 'non-inline namespace cannot be reopened as a inline' an error (correctly), but also complains 'inline namespace cannot be reopened as a non-inline namespace'. I'm curious why the latter should trigger a warning. G++ have no diagnostic for them at all.