1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// test placement new array
10
11#include <new>
12#include <cassert>
13#include <cstddef>
14
15#include "test_macros.h"
16
17int A_constructed = 0;
18
19struct A {
20 A() { ++A_constructed; }
21 ~A() { --A_constructed; }
22};
23
24TEST_CONSTEXPR_OPERATOR_NEW void test_direct_call() {
25 assert(::operator new[](sizeof(int), &A_constructed) == &A_constructed);
26
27 char ch = '*';
28 assert(::operator new[](1, &ch) == &ch);
29 assert(ch == '*');
30}
31
32#ifdef __cpp_lib_constexpr_new
33static_assert((test_direct_call(), true));
34#endif
35
36int main(int, char**) {
37 const std::size_t Size = 3;
38 // placement new might require additional space.
39 const std::size_t ExtraSize = 64;
40 char buf[Size * sizeof(A) + ExtraSize];
41
42 A* ap = new (buf) A[Size];
43 assert((char*)ap >= buf);
44 assert((char*)ap < (buf + ExtraSize));
45 assert(A_constructed == Size);
46
47 test_direct_call();
48 return 0;
49}
50

source code of libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.placement/new_array.pass.cpp