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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/97328] [10/11 Regression] ICE in verify_ctor_sanity, at
 cp/constexpr.c:3995 since r10-7313-gb599bf9d6d1e180d
Date: Thu, 08 Oct 2020 18:51:14 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97328

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mpolacek at gcc dot gnu.org

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
(In reply to Patrick Palka from comment #2)
> When 'storage' is a struct instead of a union, i.e. for the testcase
>=20
> template <typename T, int N>
> struct vector {
>     struct storage {=20
>         T t;=20
>         constexpr  storage() {}
>     } data[N];
> };
>=20
> constexpr auto foo() {
>     vector<char, 8> i;
>     return i;
> }
> auto f =3D foo();
>=20
> we started to ICE earlier, since r279019:
>=20
>    PR c++/91353 - P1331R2: Allow trivial default init in constexpr contex=
ts.

Ah.  Feel free to hand this PR to me then (that is, if you don't want it
anymore).=