http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59283
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- This is a known issue. Our std::string does not support the C++11 allocator requirements, and the current implementation probably never will. When we switch to a non-Copy-On-Write std::string it will include C++11 allocator support.
