src/third_party/llvm-project/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.placement/new_array.pass.cpp

//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// test placement new array

#include <new>
#include <cassert>

int A_constructed = 0;

struct A
{
    A() {++A_constructed;}
    ~A() {--A_constructed;}
};

int main()
{
    const std::size_t Size = 3;
    // placement new might require additional space.
    const std::size_t ExtraSize = 64;
    char buf[Size*sizeof(A) + ExtraSize];

    A* ap = new(buf) A[Size];
    assert((char*)ap >= buf);
    assert((char*)ap < (buf + ExtraSize));
    assert(A_constructed == Size);
}