[Bug libstdc++/103381] [9/10/11 Regression] --enable-libstdcxx-allocator=bitmap doesn't build

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103381

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This fixes bootstrap, but there are still hundreds of FAILs.