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From: "hewillk at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/101960] std::tuple with an array element is rejected
 as a named return type
Date: Fri, 03 Sep 2021 17:02:59 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101960

=E5=BA=B7=E6=A1=93=E7=91=8B <hewillk at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hewillk at gmail dot com

--- Comment #5 from =E5=BA=B7=E6=A1=93=E7=91=8B <hewillk at gmail dot com> =
---
(In reply to Jonathan Wakely from comment #4)
> Fixed on trunk, but I plan to backport it.

You neglected the recursive one.

#include <tuple>

std::tuple<int[1], int[2]> t;
auto t2 =3D std::move(t);

https://godbolt.org/z/b4jrs1fYb=