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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/107687] [C++23] P2564 - consteval needs to propagate up
Date: Fri, 11 Aug 2023 19:39:52 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107687

--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I don't understand why clang++ doesn't error here:

--
consteval int id(int i) { return i; }

template<typename T>
constexpr int
f (T t)
{
  auto p =3D id; // immediate-escalating expr
  return t;
}

auto q =3D &f<int>; // error?
--

I though naming 'id' should promote f<int> to consteval and therefore you c=
an't
take its address.=