mirror of git://gcc.gnu.org/git/gcc.git
87 lines
2.2 KiB
C++
87 lines
2.2 KiB
C++
// Copyright (C) 2017-2019 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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// { dg-options "-std=gnu++17" }
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// { dg-do compile { target c++17 } }
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#include <functional>
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template<typename T, typename U> struct require_same;
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template<typename T> struct require_same<T, T> { using type = void; };
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template<typename T, typename U>
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typename require_same<T, U>::type
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check_type(U&) { }
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void f0v();
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void f0vn() noexcept;
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int f0i();
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int f0in() noexcept;
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long f1l(int&);
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long f1ln(double*) noexcept;
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void
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test01()
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{
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std::function func1 = f0v;
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check_type<std::function<void()>>(func1);
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std::function func2 = f0vn;
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check_type<std::function<void()>>(func2);
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std::function func3 = f0i;
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check_type<std::function<int()>>(func3);
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std::function func4 = f0in;
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check_type<std::function<int()>>(func4);
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std::function func5 = f1l;
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check_type<std::function<long(int&)>>(func5);
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std::function func6 = f1ln;
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check_type<std::function<long(double*)>>(func6);
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std::function func5a = func5;
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check_type<std::function<long(int&)>>(func5a);
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std::function func6a = func6;
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check_type<std::function<long(double*)>>(func6a);
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}
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struct X {
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int operator()(const short&, void*);
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};
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struct Y {
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void operator()(int) const & noexcept;
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};
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void
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test02()
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{
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X x;
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std::function func1 = x;
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check_type<std::function<int(const short&, void*)>>(func1);
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Y y;
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std::function func2 = y;
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check_type<std::function<void(int)>>(func2);
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std::function func3 = [&x](float) -> X& { return x; };
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check_type<std::function<X&(float)>>(func3);
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}
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