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// { dg-do compile { target c++20 } }
// Copyright (C) 2018-2024 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/>.
#include <type_traits>
#include <testsuite_tr1.h>
void test01()
{
using std::remove_cvref;
using std::is_same;
using namespace __gnu_test;
static_assert(is_same<remove_cvref<const volatile int>::type,
int>::value, "");
static_assert(is_same<remove_cvref<const volatile int*>::type,
const volatile int*>::value, "");
static_assert(is_same<typename remove_cvref<const volatile int&>::type,
int>::value, "");
static_assert(is_same<typename remove_cvref<const volatile int&&>::type,
int>::value, "");
static_assert(is_same<remove_cvref<const volatile ClassType>::type,
ClassType>::value, "");
static_assert(is_same<remove_cvref<const volatile ClassType*>::type,
const volatile ClassType*>::value, "");
static_assert(is_same<typename remove_cvref<const volatile ClassType&>::type,
ClassType>::value, "");
static_assert(is_same<typename remove_cvref<const volatile ClassType&&>::type,
ClassType>::value, "");
static_assert(is_same<typename remove_cvref<const int(&)[3]>::type,
int[3]>::value, "");
static_assert(is_same<typename remove_cvref<const int(&)()>::type,
const int()>::value, "");
}
// Declare using nested name of class template
template<typename T> T func(typename std::remove_cvref<T>::type);
// Define using alias
template<typename T> T func(std::remove_cvref_t<T> t) { return t; }
// Call must not be ambiguous
int i = func<int>(1);
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