http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53627
--- Comment #3 from Daniel Krügler <daniel.kruegler at googlemail dot com> 2012-06-10 21:11:41 UTC --- This does not look like a compiler defect to me. Z::n has never been defined but is odr-used.
daniel.kruegler at googlemail dot com Sun, 10 Jun 2012 14:11:58 -0700
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53627
--- Comment #3 from Daniel Krügler <daniel.kruegler at googlemail dot com> 2012-06-10 21:11:41 UTC --- This does not look like a compiler defect to me. Z::n has never been defined but is odr-used.