gcc/libstdc++-v3/testsuite/26_numerics/numbers/nonfloat_neg.cc

// Copyright (C) 2019-2025 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3.  If not see
// <http://www.gnu.org/licenses/>.

// { dg-do compile { target c++20 } }

#include <numbers>

int
test01()
{
  return std::numbers::pi_v<int>; // { dg-error "here" }
}

void
test02()
{
  struct S { };
  auto s = std::numbers::egamma_v<S>; // { dg-error "here" }
}

// { dg-prune-output "no type named 'type' in" }