[Bug libstdc++/100164] [11/12 Regression] semaphore_impl not declared on AIX

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100164

--- Comment #18 from David Edelsohn <dje at gcc dot gnu.org> ---
Because the _M_try_acquire patch was not yet committed to trunk when I tested
and bootstrap on trunk now is broken due to other, unrelated patches.