1/*
2 * Copyright (C) 2017-2019 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27
28#include <wtf/Bag.h>
29#include <wtf/Platform.h>
30#include <wtf/RefCountedArray.h>
31#include <wtf/RefPtr.h>
32
33#if OS(DARWIN)
34#include <mach/vm_param.h>
35#include <mach/vm_types.h>
36#endif
37
38namespace WTF {
39
40namespace {
41struct DummyStruct { };
42}
43
44static_assert(sizeof(Bag<DummyStruct>) == sizeof(void*), "");
45
46static_assert(sizeof(Ref<DummyStruct>) == sizeof(DummyStruct*), "");
47
48static_assert(sizeof(RefPtr<DummyStruct>) == sizeof(DummyStruct*), "");
49
50static_assert(sizeof(RefCountedArray<DummyStruct>) == sizeof(void*), "");
51
52#if OS(DARWIN) && CPU(ADDRESS64)
53static_assert(MACH_VM_MAX_ADDRESS <= ((1ULL << WTF_CPU_EFFECTIVE_ADDRESS_WIDTH) - 1));
54#endif
55
56} // namespace WTF
57
58