[Bug libstdc++/66078] 20_util/specialized_algorithms/uninitialized_copy/808590.cc fails with -std=c++11

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66078

--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Ping?  I think this is now the only thing preventing me from throwing the
switch to default C++14.