Thanks !

On Mon, 23 Mar 2020 at 17:24, Vinnie Falco via Boost-users
<boost-users@lists.boost.org> wrote:

On Mon, Mar 23, 2020 at 9:10 AM David P. Riedel via Boost-users
<boost-users@lists.boost.org> wrote:

My set up:

Perhaps you might provide a self-contained example program which
exhibits the problem here:

<https://godbolt.org/z/uPrSGo>

This empty main with a recent gcc and -fconcepts is enough to trigger
plenty of errors.