88 lines
1.9 KiB
C++
88 lines
1.9 KiB
C++
// { dg-do compile { target c++11 } }
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// Copyright (C) 2015-2020 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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#include <sstream>
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struct A {};
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void operator<<(std::ostream&, const A&) { }
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void operator>>(std::istream&, A&) { }
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class MyStream : private std::ostream, private std::istream
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{
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public:
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MyStream& operator <<(const char*)
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{
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return *this;
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}
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MyStream& operator >>(int&)
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{
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return *this;
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}
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};
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class MyStream2
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{
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public:
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MyStream2& operator <<(const char*)
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{
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return *this;
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}
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MyStream2& operator >>(int&)
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{
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return *this;
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}
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private:
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operator std::ostream&();
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operator std::istream&();
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};
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struct X { };
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std::ostream& operator<<(std::ostream& os, const X&) { return os; }
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std::istream& operator>>(std::istream& is, X&&) { return is; }
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struct O : std::ostream { };
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void operator<<(O&, X) = delete;
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struct I : std::istream { };
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void operator>>(I&, X) = delete;
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// PR libstdc++/65543
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// PR libstdc++/80675
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// PR libstdc++/80940
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int main()
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{
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A a;
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std::ostringstream() << a;
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std::istringstream() >> a;
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MyStream stream{};
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stream << "aaa";
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int msi;
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stream >> msi;
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MyStream2 stream2{};
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stream2 << "aaa";
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stream2 >> msi;
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O{} << X{};
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I{} >> X{};
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}
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