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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
//
//===----------------------------------------------------------------------===//
// <functional>
// class function<R(ArgTypes...)>
// function& operator=(nullptr_t);
// This test runs in C++03, but we have deprecated using std::function in C++03.
// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
#include <functional>
#include <cassert>
#include "count_new.h"
#include "test_macros.h"
class A
{
int data_[10];
public:
static int count;
A()
{
++count;
for (int i = 0; i < 10; ++i)
data_[i] = i;
}
A(const A&) {++count;}
~A() {--count;}
int operator()(int i) const
{
for (int j = 0; j < 10; ++j)
i += data_[j];
return i;
}
};
int A::count = 0;
int g(int) {return 0;}
int main(int, char**)
{
globalMemCounter.reset();
assert(globalMemCounter.checkOutstandingNewEq(0));
{
std::function<int(int)> f = A();
assert(A::count == 1);
assert(globalMemCounter.checkOutstandingNewEq(1));
RTTI_ASSERT(f.target<A>());
f = nullptr;
assert(A::count == 0);
assert(globalMemCounter.checkOutstandingNewEq(0));
RTTI_ASSERT(f.target<A>() == 0);
}
{
std::function<int(int)> f = g;
assert(globalMemCounter.checkOutstandingNewEq(0));
RTTI_ASSERT(f.target<int(*)(int)>());
RTTI_ASSERT(f.target<A>() == 0);
f = nullptr;
assert(globalMemCounter.checkOutstandingNewEq(0));
RTTI_ASSERT(f.target<int(*)(int)>() == 0);
}
return 0;
}
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