blob: 9f7277742bebea7c147797a91146513095b28f84 [file] [log] [blame]
/*
* Copyright (C) 2017-2021 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include <wtf/Bag.h>
#include <wtf/Platform.h>
#include <wtf/RefPtr.h>
#if OS(DARWIN)
#include <mach/vm_param.h>
#include <mach/vm_types.h>
#endif
namespace WTF {
namespace {
struct DummyStruct { };
}
static_assert(sizeof(Bag<DummyStruct>) == sizeof(void*));
static_assert(sizeof(Ref<DummyStruct>) == sizeof(DummyStruct*));
static_assert(sizeof(RefPtr<DummyStruct>) == sizeof(DummyStruct*));
#if OS(DARWIN) && CPU(ADDRESS64)
// NaN boxing encoding relies on this.
static_assert(MACH_VM_MAX_ADDRESS <= (1ull << 48));
#endif
} // namespace WTF