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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=(const function& f);
#include <functional>
#include <cassert>
#include "test_macros.h"
#include "count_new.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 g0() { return 0; }
int g(int) { return 0; }
int g2(int, int) { return 2; }
int g3(int, int, int) { return 3; }
int main(int, char**) {
assert(globalMemCounter.checkOutstandingNewEq(0));
{
std::function<int(int)> f = A();
assert(A::count == 1);
assert(globalMemCounter.checkOutstandingNewEq(1));
assert(f.target<A>());
assert(f.target<int (*)(int)>() == 0);
std::function<int(int)> f2;
f2 = f;
assert(A::count == 2);
assert(globalMemCounter.checkOutstandingNewEq(2));
assert(f2.target<A>());
assert(f2.target<int (*)(int)>() == 0);
}
assert(A::count == 0);
assert(globalMemCounter.checkOutstandingNewEq(0));
{
std::function<int(int)> f = g;
assert(globalMemCounter.checkOutstandingNewEq(0));
assert(f.target<int (*)(int)>());
assert(f.target<A>() == 0);
std::function<int(int)> f2;
f2 = f;
assert(globalMemCounter.checkOutstandingNewEq(0));
assert(f2.target<int (*)(int)>());
assert(f2.target<A>() == 0);
}
assert(globalMemCounter.checkOutstandingNewEq(0));
{
std::function<int(int)> f;
assert(globalMemCounter.checkOutstandingNewEq(0));
assert(f.target<int (*)(int)>() == 0);
assert(f.target<A>() == 0);
std::function<int(int)> f2;
f2 = f;
assert(globalMemCounter.checkOutstandingNewEq(0));
assert(f2.target<int (*)(int)>() == 0);
assert(f2.target<A>() == 0);
}
{
typedef std::function<int()> Func;
Func f = g0;
Func& fr = (f = (Func &)f);
assert(&fr == &f);
assert(*f.target<int(*)()>() == g0);
}
{
typedef std::function<int(int)> Func;
Func f = g;
Func& fr = (f = (Func &)f);
assert(&fr == &f);
assert(*f.target<int(*)(int)>() == g);
}
{
typedef std::function<int(int, int)> Func;
Func f = g2;
Func& fr = (f = (Func &)f);
assert(&fr == &f);
assert(*f.target<int(*)(int, int)>() == g2);
}
{
typedef std::function<int(int, int, int)> Func;
Func f = g3;
Func& fr = (f = (Func &)f);
assert(&fr == &f);
assert(*f.target<int(*)(int, int, int)>() == g3);
}
#if TEST_STD_VER >= 11
assert(globalMemCounter.checkOutstandingNewEq(0));
{
std::function<int(int)> f = A();
assert(A::count == 1);
assert(globalMemCounter.checkOutstandingNewEq(1));
assert(f.target<A>());
assert(f.target<int (*)(int)>() == 0);
std::function<int(int)> f2;
f2 = std::move(f);
assert(A::count == 1);
assert(globalMemCounter.checkOutstandingNewEq(1));
assert(f2.target<A>());
assert(f2.target<int (*)(int)>() == 0);
assert(f.target<A>() == 0);
assert(f.target<int (*)(int)>() == 0);
}
#endif
return 0;
}
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