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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/108974] std::barrier except completion function which
 is not manifestly noexcept
Date: Tue, 28 Feb 2023 21:17:32 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108974

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
"is_nothrow_invocable_v<CompletionFunction&> shall be true."

Failing to meet that requirement is undefined, so we're not required to rej=
ect
it as ill-formed.=