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From: "dangelog at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/113060] std::variant converting
 constructor/assignment is non-conforming after P2280?
Date: Mon, 19 Feb 2024 23:47:27 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113060

--- Comment #7 from Giuseppe D'Angelo <dangelog at gmail dot com> ---
Hi,

> Note that this example adds a mediate function template (test_array_eleme=
nt_initializable) to "reduce" the non-constexpr-ness of std::declval.

That's very clever, thank you!=20

Is it _supposed_ to work, though? I had imagined (possibly erroneusly) that
once one places the call to `test_array_element_initializable` using `declv=
al`
as an argument, it would disqualify the whole thing from being usable in
constant expressions.

(It would help to have another compiler that implements P2280, so to do more
tests...)=