http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54002
Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jason at gcc dot gnu.org --- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-07-17 20:04:59 UTC --- N.B. 4.5 doesn't implement constexpr (it parses the keyword and pretty much ignores it) so that error is irrelevant I think this might be because C1::foo can't be used in a constant expression until C1 is complete. Jason?