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// { dg-do run { target c++11 } }
// Copyright (C) 2015-2022 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
// <http://www.gnu.org/licenses/>.
#include <string>
#include <tuple>
#include <testsuite_hooks.h>
static std::string result;
struct X {
int state; // this has to be here
X() {
result += "Def";
}
X(X const&) {
result += "Copy";
}
X(X&&) {
result += "Move";
}
~X() {
result += "Dtor";
}
};
void f()
{
X v;
std::tuple<X> t1{v};
std::tuple<std::tuple<X>&&> t2{std::move(t1)};
std::tuple<std::tuple<X>> t3{std::move(t2)};
}
void f2()
{
X v;
std::tuple<X> t1{std::move(v)};
std::tuple<std::tuple<X>&&> t2{std::move(t1)};
std::tuple<std::tuple<X>> t3{std::move(t2)};
}
void f3()
{
std::tuple<X> t1{X{}};
std::tuple<std::tuple<X>&&> t2{std::move(t1)};
std::tuple<std::tuple<X>> t3{std::move(t2)};
}
void f4()
{
std::allocator<X> a;
X v;
std::tuple<X> t1{std::allocator_arg, a, v};
std::tuple<std::tuple<X>&&> t2{std::allocator_arg, a, std::move(t1)};
std::tuple<std::tuple<X>> t3{std::allocator_arg, a, std::move(t2)};
}
void f5()
{
std::allocator<X> a;
X v;
std::tuple<X> t1{std::allocator_arg, a, std::move(v)};
std::tuple<std::tuple<X>&&> t2{std::allocator_arg, a, std::move(t1)};
std::tuple<std::tuple<X>> t3{std::allocator_arg, a, std::move(t2)};
}
void f6()
{
std::allocator<X> a;
std::tuple<X> t1{std::allocator_arg, a, X{}};
std::tuple<std::tuple<X>&&> t2{std::allocator_arg, a, std::move(t1)};
std::tuple<std::tuple<X>> t3{std::allocator_arg, a, std::move(t2)};
}
int main()
{
f();
VERIFY(result == "DefCopyMoveDtorDtorDtor");
result = "";
f2();
VERIFY(result == "DefMoveMoveDtorDtorDtor");
result = "";
f3();
VERIFY(result == "DefMoveDtorMoveDtorDtor");
result = "";
f4();
VERIFY(result == "DefCopyMoveDtorDtorDtor");
result = "";
f5();
VERIFY(result == "DefMoveMoveDtorDtorDtor");
result = "";
f6();
VERIFY(result == "DefMoveDtorMoveDtorDtor");
result = "";
}
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