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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03
// <functional>
// template<CopyConstructible Fn, CopyConstructible... Types>
// unspecified bind(Fn, Types...);
// template<Returnable R, CopyConstructible Fn, CopyConstructible... Types>
// unspecified bind(Fn, Types...);
// https://llvm.org/PR22003
#include <functional>
#include "test_macros.h"
struct DummyUnaryFunction
{
template <typename S>
int operator()(S const &) const { return 0; }
};
struct BadUnaryFunction
{
template <typename S>
constexpr int operator()(S const &) const
{
// Trigger a compile error if this function is instantiated.
// The constexpr is needed so that it is instantiated while checking
// __invoke_of<BadUnaryFunction &, ...>.
static_assert(!std::is_same<S, S>::value, "Shit");
return 0;
}
};
int main(int, char**)
{
// Check that BadUnaryFunction::operator()(S const &) is not
// instantiated when checking if BadUnaryFunction is a nested bind
// expression during b(0). See PR22003.
auto b = std::bind(DummyUnaryFunction(), BadUnaryFunction());
b(0);
auto b2 = std::bind<long>(DummyUnaryFunction(), BadUnaryFunction());
b2(0);
return 0;
}
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