[Bug libstdc++/116853] [15 regression] Bootstrap fails on Darwin, Solaris after r15-3859-g63a598deb0c9

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116853

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The workaround is fine to push if it works.