On Wed, 24 Nov 2021 at 13:25, Jonathan Wakely via Libstdc++
<libstdc++@gcc.gnu.org> wrote:
>
> I plan to commit this Real Soon. Please yell if you need these
> alternative std::allocator back-ends to stay (and explain how you're
> using them when they've  been broken for years, and start sending test
> results to the gcc-testresults mailing list, and ideally offer to
> maintain them).
>
> Tested powerpc64le-linux.

Nobody has objected or said they need these so I'm going ahead with
removing them.

This version of the patch also removes the
config/allocator/*_allocator_base.h headers that are no longer needed.

Tested powerpc64le-linux, pushed to trunk.