[Bug bootstrap/52887] Bootstrap on AIX failure: Undefined symbol: .std::function::function(std::function const&)

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52887

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-04-10 
09:12:39 UTC ---
we might need an explicit instantiation of that type in libstdc++.so, I'll
investigate