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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/109337] c++2a test concepts4.C passes when it should fail
Date: Wed, 29 Mar 2023 19:02:46 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109337

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Reduced testcase:
```
template <class Ub> concept A42b =3D true;
template <class Tc> concept R42c =3D A42b<Tc&>;

static_assert (R42c<void>);
```


GCC does the right thing for too:
```
template <class Ub> bool A42b =3D true;
template <class Tc> concept R42c =3D A42b<Tc&>;

static_assert (!R42c<void>);
```=