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// { dg-options "-std=gnu++0x" }
//
// Copyright (C) 2008-2014 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_hooks.h>
#define JOIN( X, Y ) DO_JOIN( X, Y )
#define DO_JOIN( X, Y ) DO_JOIN2(X,Y)
#define DO_JOIN2( X, Y ) X##Y
#define COMMON_TYPE_TEST_1(type1, uid) \
typedef common_type<type1>::type JOIN(test_t,uid); \
VERIFY( (is_same<JOIN(test_t,uid), JOIN(test_t,uid)>::value) ); \
typedef common_type<const type1>::type JOIN(test_t,JOIN(uid,c)); \
VERIFY( (is_same<JOIN(test_t,JOIN(uid,c)), \
JOIN(test_t,JOIN(uid,c))>::value) ); \
typedef common_type<volatile type1>::type JOIN(test_t,JOIN(uid,v)); \
VERIFY( (is_same<JOIN(test_t,JOIN(uid,v)), \
JOIN(test_t,JOIN(uid,v))>::value) ); \
typedef common_type<const volatile type1>::type JOIN(test_t,JOIN(uid,cv)); \
VERIFY( (is_same<JOIN(test_t,JOIN(uid,cv)), \
JOIN(test_t,JOIN(uid,cv))>::value) ); \
typedef common_type<type1 &>::type JOIN(test_t,JOIN(uid,l)); \
VERIFY( (is_same<JOIN(test_t,JOIN(uid,l)), \
JOIN(test_t,JOIN(uid,l))>::value) ); \
typedef common_type<const type1 &>::type JOIN(test_t,JOIN(uid,lc)); \
VERIFY( (is_same<JOIN(test_t,JOIN(uid,lc)), \
JOIN(test_t,JOIN(uid,lc))>::value) ); \
typedef common_type<volatile type1 &>::type JOIN(test_t,JOIN(uid,lv)); \
VERIFY( (is_same<JOIN(test_t,JOIN(uid,lv)), \
JOIN(test_t,JOIN(uid,lv))>::value) ); \
typedef common_type<const volatile type1 &>::type JOIN(test_t,JOIN(uid,lcv)); \
VERIFY( (is_same<JOIN(test_t,JOIN(uid,lcv)), \
JOIN(test_t,JOIN(uid,lcv))>::value) ); \
typedef common_type<type1 &&>::type JOIN(test_t,JOIN(uid,r)); \
VERIFY( (is_same<JOIN(test_t,JOIN(uid,r)), \
JOIN(test_t,JOIN(uid,r))>::value) ); \
typedef common_type<const type1 &&>::type JOIN(test_t,JOIN(uid,rc)); \
VERIFY( (is_same<JOIN(test_t,JOIN(uid,rc)), \
JOIN(test_t,JOIN(uid,rc))>::value) ); \
typedef common_type<volatile type1 &&>::type JOIN(test_t,JOIN(uid,rv)); \
VERIFY( (is_same<JOIN(test_t,JOIN(uid,rv)), \
JOIN(test_t,JOIN(uid,rv))>::value) ); \
typedef common_type<const volatile type1 &&>::type JOIN(test_t,JOIN(uid,rcv)); \
VERIFY( (is_same<JOIN(test_t,JOIN(uid,rcv)), \
JOIN(test_t,JOIN(uid,rcv))>::value) )
struct A { };
struct B : A { };
void test01()
{
bool test __attribute__((unused)) = true;
using std::common_type;
using std::is_same;
// Positive tests.
COMMON_TYPE_TEST_1(int, 1);
COMMON_TYPE_TEST_1(double, 2);
COMMON_TYPE_TEST_1(A, 3);
COMMON_TYPE_TEST_1(B, 4);
}
#define COMMON_TYPE_TEST_2_IMPL(type1, type2, type3, uid) \
typedef common_type<type1, type2>::type JOIN(JOIN(test, uid),_t1); \
typedef common_type<type2, type1>::type JOIN(JOIN(test, uid),_t2); \
VERIFY( (is_same<JOIN(JOIN(test, uid),_t1), type3>::value) ); \
VERIFY( (is_same<JOIN(JOIN(test, uid),_t2), type3>::value) )
#define NO_CV
#define COMMON_TYPE_TEST_2(cv_qual, type1, type2, type3, uid) \
COMMON_TYPE_TEST_2_IMPL(cv_qual type1, type2, type3, uid); \
COMMON_TYPE_TEST_2_IMPL(cv_qual type1 &, type2, type3, JOIN(uid,l)); \
COMMON_TYPE_TEST_2_IMPL(cv_qual type1 &&, type2, type3, JOIN(uid,r))
#define COMMON_TYPE_TEST_ALL_2(type1, type2, type3, uid) \
COMMON_TYPE_TEST_2(NO_CV, type1, type2, type3, uid); \
COMMON_TYPE_TEST_2(const, type1, type2, type3, uid); \
COMMON_TYPE_TEST_2(volatile, type1, type2, type3, uid); \
COMMON_TYPE_TEST_2(const volatile, type1, type2, type3, uid)
void test02()
{
bool test __attribute__((unused)) = true;
using std::common_type;
using std::is_same;
COMMON_TYPE_TEST_ALL_2(int, int, int, 1);
COMMON_TYPE_TEST_ALL_2(int, double, double, 2);
COMMON_TYPE_TEST_2(NO_CV, A, A, A, 3);
COMMON_TYPE_TEST_2(const, A, A, A, 4);
COMMON_TYPE_TEST_2(NO_CV, B, A, A, 5);
}
int main()
{
test01();
test02();
return 0;
}
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