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Subject: [Bug target/101761] Random hang with
 29_atomics/atomic_ref/wait_notify.cc
Date: Wed, 15 Sep 2021 18:56:09 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101761

--- Comment #11 from Thomas Rodgers <rodgertq at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #10)
> http://eel.is/c++draft/atomics#ref.generic.general-3.sentence-2
>=20
> "While any atomic_=C2=ADref instances exist that reference the *ptr objec=
t, all
> accesses to that object shall exclusively occur through those atomic_=C2=
=ADref
> instances."

Yes. I will submit a patch for this test shortly.

Having said that, the atomic integral tests also spuriously deadlock, they
don't have this UB issue.=