[Bug libstdc++/104495] call_once hangs in call after exceptional call

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104495

--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
See PR 66146 comment 26, it affects all architectures, including x86_64.