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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/108536] Difference when using requires and enable_if with
 class constructor
Date: Wed, 25 Jan 2023 10:40:20 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108536

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This is not a bug, you've just transformed your working code to use a
requires-clause incorrectly.

This works fine:

    template <typename F, typename DecayF =3D std::decay_t<F>>
        requires (!std::derived_from<DecayF, Base>)
                 && std::constructible_from<DecayF, F>
    Base(F&&) {}=