// Copyright (C) 2021-2022 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
// .
// { dg-options "-std=gnu++23" }
// { dg-do compile { target c++23 } }
#include
#ifndef __cpp_lib_is_scoped_enum
# error "Feature test macro for is_scoped_enum is missing in "
#elif __cpp_lib_is_scoped_enum < 202011L
# error "Feature test macro for is_scoped_enum has wrong value in "
#endif
#include
template
concept Is_scoped_enum
= __gnu_test::test_category(true);
struct Incomplete_struct;
void
test01()
{
enum class E { e1, e2 };
static_assert( Is_scoped_enum );
enum class Ec : char { e1, e2 };
static_assert( Is_scoped_enum );
// negative tests
enum U { u1, u2 };
static_assert( ! Is_scoped_enum );
enum F : int { f1, f2 };
static_assert( ! Is_scoped_enum );
static_assert( ! Is_scoped_enum );
struct S;
static_assert( ! Is_scoped_enum );
struct S { };
static_assert( ! Is_scoped_enum );
static_assert( ! Is_scoped_enum );
static_assert( ! Is_scoped_enum );
static_assert( ! Is_scoped_enum );
static_assert( ! Is_scoped_enum );
static_assert( ! Is_scoped_enum );
static_assert( ! Is_scoped_enum );
static_assert( ! Is_scoped_enum );
static_assert( ! Is_scoped_enum );
static_assert( ! Is_scoped_enum );
static_assert( ! Is_scoped_enum );
static_assert( ! Is_scoped_enum );
}
enum opaque_unscoped : short;
enum class opaque_scoped;
enum class opaque_scoped_with_base : long;
static_assert( ! Is_scoped_enum );
static_assert( Is_scoped_enum );
static_assert( Is_scoped_enum );
void
test02()
{
enum unscoped {
u_is_enum = std::is_enum_v,
u_is_scoped = std::is_scoped_enum_v,
};
static_assert( unscoped::u_is_enum );
static_assert( ! unscoped::u_is_scoped );
enum unscoped_fixed : char {
uf_is_enum = std::is_enum_v,
uf_is_scoped = std::is_scoped_enum_v,
};
static_assert( unscoped_fixed::uf_is_enum);
static_assert( ! unscoped_fixed::uf_is_scoped );
enum class scoped {
is_enum = std::is_enum_v,
is_scoped = std::is_scoped_enum_v,
};
static_assert( (bool) scoped::is_enum );
static_assert( (bool) scoped::is_scoped );
}