[Bug libstdc++/86676] 20_util/monotonic_buffer_resource/release.cc FAILs

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86676

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Oops, the test depends on stack alignment of a char buffer. Patch incoming.