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 sized operator delete replacement.
10
11// UNSUPPORTED: c++03, c++11
12
13// These compiler versions and platforms don't enable sized deallocation by default.
14// ADDITIONAL_COMPILE_FLAGS(clang-18): -fsized-deallocation
15// ADDITIONAL_COMPILE_FLAGS(apple-clang-15): -fsized-deallocation
16// ADDITIONAL_COMPILE_FLAGS(apple-clang-16): -fsized-deallocation
17// ADDITIONAL_COMPILE_FLAGS(apple-clang-17): -fsized-deallocation
18// ADDITIONAL_COMPILE_FLAGS(target=x86_64-w64-windows-gnu): -fsized-deallocation
19// ADDITIONAL_COMPILE_FLAGS(target=i686-w64-windows-gnu): -fsized-deallocation
20// ADDITIONAL_COMPILE_FLAGS(target=aarch64-w64-windows-gnu): -fsized-deallocation
21// ADDITIONAL_COMPILE_FLAGS(target=armv7-w64-windows-gnu): -fsized-deallocation
22// ADDITIONAL_COMPILE_FLAGS(target=arm64ec-w64-windows-gnu): -fsized-deallocation
23
24// Android clang-r536225 identifies as clang-19.0 but it predates the real
25// LLVM 19.0.0, so it also leaves sized deallocation off by default.
26// UNSUPPORTED: android && clang-19.0
27
28// UNSUPPORTED: sanitizer-new-delete
29
30// Sized deallocation was introduced in LLVM 11
31// XFAIL: using-built-library-before-llvm-11
32
33// AIX, and z/OS default to -fno-sized-deallocation.
34// XFAIL: target={{.+}}-aix{{.*}}, target={{.+}}-zos{{.*}}
35
36#if !defined(__cpp_sized_deallocation)
37# error __cpp_sized_deallocation should be defined
38#endif
39
40#if !(__cpp_sized_deallocation >= 201309L)
41# error expected __cpp_sized_deallocation >= 201309L
42#endif
43
44#include <new>
45#include <cstddef>
46#include <cstdlib>
47#include <cassert>
48
49#include "test_macros.h"
50
51int unsized_delete_called = 0;
52int unsized_delete_nothrow_called = 0;
53int sized_delete_called = 0;
54
55void operator delete(void* p) TEST_NOEXCEPT
56{
57 ++unsized_delete_called;
58 std::free(p);
59}
60
61void operator delete(void* p, const std::nothrow_t&) TEST_NOEXCEPT
62{
63 ++unsized_delete_nothrow_called;
64 std::free(p);
65}
66
67void operator delete(void* p, std::size_t) TEST_NOEXCEPT
68{
69 ++sized_delete_called;
70 std::free(p);
71}
72
73int main(int, char**)
74{
75 int *x = new int(42);
76 DoNotOptimize(x);
77 assert(0 == unsized_delete_called);
78 assert(0 == unsized_delete_nothrow_called);
79 assert(0 == sized_delete_called);
80
81 delete x;
82 DoNotOptimize(x);
83 assert(0 == unsized_delete_called);
84 assert(1 == sized_delete_called);
85 assert(0 == unsized_delete_nothrow_called);
86
87 return 0;
88}
89

source code of libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete.pass.cpp