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// { dg-do compile { target c++17 } }
// Copyright (C) 2020-2022 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/>.
// { dg-error "must be a complete class" "" { target *-*-* } 0 }
#include <type_traits>
class X;
void test01()
{
std::invoke_result<int(X), X>(); // { dg-error "required from here" }
std::invoke_result<int(int, X), int, X>(); // { dg-error "required from here" }
std::invoke_result<int(int, X), X, int>(); // { dg-error "required from here" }
std::invoke_result<int(X&), X&>(); // { dg-bogus "required from here" }
std::invoke_result<int(int, X&), int, X&>(); // { dg-bogus "required from here" }
std::invoke_result<int(X&&), X&&>(); // { dg-bogus "required from here" }
std::invoke_result<int(int, X&&), int, X&&>(); // { dg-bogus "required from here" }
std::invoke_result<int(const X&&), const X&&>(); // { dg-bogus "required from here" }
std::invoke_result<int(int, const X&&), int, const X&&>(); // { dg-bogus "required from here" }
std::invoke_result<int(const X&), const X&>(); // { dg-bogus "required from here" }
std::invoke_result<int(int, const X&), int, const X&>(); // { dg-bogus "required from here" }
std::invoke_result<int(const X&), X&>(); // { dg-bogus "required from here" }
std::invoke_result<int(int, const X&), int, X&>(); // { dg-bogus "required from here" }
}
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