[Bug bootstrap/81864] building gcc 8 with --enable-gather-detailed-mem-stats fails on x86-64, arm and aarch64 under gnu linux

[andrewm.roberts at sky dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81864

--- Comment #8 from Andrew Roberts <andrewm.roberts at sky dot com> ---
aarch64 also ok with gcc-8.0.0 for me.