2 * Copyright (C) 2017-2019 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
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.
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
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23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #include <wtf/Platform.h>
30 #include <wtf/RefCountedArray.h>
31 #include <wtf/RefPtr.h>
34 #include <mach/vm_param.h>
40 struct DummyStruct { };
43 static_assert(sizeof(Bag<DummyStruct>) == sizeof(void*), "");
45 static_assert(sizeof(Ref<DummyStruct>) == sizeof(DummyStruct*), "");
47 static_assert(sizeof(RefPtr<DummyStruct>) == sizeof(DummyStruct*), "");
49 static_assert(sizeof(RefCountedArray<DummyStruct>) == sizeof(void*), "");
51 #if OS(DARWIN) && CPU(ADDRESS64)
52 static_assert(MACH_VM_MAX_ADDRESS <= ((1ULL << WTF_CPU_EFFECTIVE_ADDRESS_WIDTH) - 1));