http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55123
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-10-29 20:32:41 UTC --- I've previously considered removing the address(const_reference) overload when is_same<reference,const_reference>, but doing so would not help most code (e.g. std::vector) work with user-defined allocators that haven't made the same (not-required-by-the-standard) change. That wouldn't be a problem for this specific bug, as shared_ptr explicitly uses std::allocator in the relevant code, but I'd rather just use allocator<void> instead of allocator<_Tp> anyway. Feel free to open an issue (either here or the LWG) suggesting a change to std::allocator ... but I'm juggling too many other things to do that change without a PR or DR to force me to do it :)
