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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
//
//===----------------------------------------------------------------------===//
// <memory>
// template <class Alloc>
// struct allocator_traits
// {
// template <class Ptr>
// static void destroy(allocator_type& a, Ptr p);
// ...
// };
#include <memory>
#include <new>
#include <type_traits>
#include <cassert>
#include "test_macros.h"
#include "incomplete_type_helper.h"
template <class T>
struct A
{
typedef T value_type;
};
int b_destroy = 0;
template <class T>
struct B
{
typedef T value_type;
template <class U>
void destroy(U* p)
{
++b_destroy;
p->~U();
}
};
struct A0
{
static int count;
~A0() {++count;}
};
int A0::count = 0;
int main(int, char**)
{
{
A0::count = 0;
A<int> a;
std::aligned_storage<sizeof(A0)>::type a0;
std::allocator_traits<A<int> >::construct(a, (A0*)&a0);
assert(A0::count == 0);
std::allocator_traits<A<int> >::destroy(a, (A0*)&a0);
assert(A0::count == 1);
}
{
typedef IncompleteHolder* VT;
typedef A<VT> Alloc;
Alloc a;
std::aligned_storage<sizeof(VT)>::type store;
std::allocator_traits<Alloc>::destroy(a, (VT*)&store);
}
#if defined(_LIBCPP_VERSION) || TEST_STD_VER >= 11
{
A0::count = 0;
b_destroy = 0;
B<int> b;
std::aligned_storage<sizeof(A0)>::type a0;
std::allocator_traits<B<int> >::construct(b, (A0*)&a0);
assert(A0::count == 0);
assert(b_destroy == 0);
std::allocator_traits<B<int> >::destroy(b, (A0*)&a0);
assert(A0::count == 1);
assert(b_destroy == 1);
}
#endif
return 0;
}
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