http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58772
--- Comment #9 from Paolo Carlini <paolo.carlini at oracle dot com> --- Personally, I would not object to experimentation like that in PR55727, but it should happen in a separate allocator, not new_allocator. Still, I'm under the impression that N3396 is superseding a lot of library-only strategies, now it's late for those...