blob: e11a024ddb225cfc833515441c1d2a39397a499f [file] [log] [blame]
// { dg-do compile { 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 <sstream>
struct A {};
void operator<<(std::ostream&, const A&) { }
void operator>>(std::istream&, A&) { }
class MyStream : private std::ostream, private std::istream
{
public:
MyStream& operator <<(const char*)
{
return *this;
}
MyStream& operator >>(int&)
{
return *this;
}
};
class MyStream2
{
public:
MyStream2& operator <<(const char*)
{
return *this;
}
MyStream2& operator >>(int&)
{
return *this;
}
private:
operator std::ostream&();
operator std::istream&();
};
struct X { };
std::ostream& operator<<(std::ostream& os, const X&) { return os; }
std::istream& operator>>(std::istream& is, X&&) { return is; }
// PR libstdc++/65543
// PR libstdc++/80940
int main()
{
A a;
std::ostringstream() << a;
std::istringstream() >> a;
MyStream stream{};
stream << "aaa";
int msi;
stream >> msi;
MyStream2 stream2{};
stream2 << "aaa";
stream2 >> msi;
}