[Bug libgcc/84292] __sync_add_and_fetch returns the old value instead of the new value

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84292

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |9.0

--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
If you are planning backport, then please close the PR as soon as you'll
install backport to all active branches. Thanks.
Update of Known to fail would be appreciated.