http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51582
--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> 2013-04-05 15:18:10 UTC --- This was fixed on the trunk by http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=177073 I put a simpler variant on the 4.6 branch to fix 49924, but that didn't fix this issue.