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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: gcc-8, gcc-9
// <memory>
// template <class Alloc>
// struct allocator_traits
// {
// static constexpr void deallocate(allocator_type& a, pointer p, size_type n);
// ...
// };
#include <memory>
#include <cassert>
#include <cstddef>
#include "test_macros.h"
#include "incomplete_type_helper.h"
template <class T>
struct A
{
typedef T value_type;
TEST_CONSTEXPR_CXX20 A(int& called) : called_(called) {}
TEST_CONSTEXPR_CXX20 void deallocate(value_type* p, std::size_t n)
{
assert(p == &storage);
assert(n == 10);
++called_;
}
int& called_;
value_type storage;
};
TEST_CONSTEXPR_CXX20 bool test()
{
{
int called = 0;
A<int> a(called);
std::allocator_traits<A<int> >::deallocate(a, &a.storage, 10);
assert(called == 1);
}
{
int called = 0;
typedef A<IncompleteHolder*> Alloc;
Alloc a(called);
std::allocator_traits<Alloc>::deallocate(a, &a.storage, 10);
assert(called == 1);
}
return true;
}
int main(int, char**)
{
test();
#if TEST_STD_VER > 17
static_assert(test());
#endif
return 0;
}
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