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// Copyright 2013 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// MemorySanitizer support.
#ifndef V8_BASE_SANITIZER_MSAN_H_
#define V8_BASE_SANITIZER_MSAN_H_
#include "src/base/macros.h"
#include "src/base/memory.h"
#ifdef V8_USE_MEMORY_SANITIZER
#include <sanitizer/msan_interface.h>
// Marks a memory range as uninitialized, as if it was allocated here.
#define MSAN_ALLOCATED_UNINITIALIZED_MEMORY(start, size) \
__msan_allocated_memory(reinterpret_cast<const void*>(start), (size))
// Marks a memory range as initialized.
#define MSAN_MEMORY_IS_INITIALIZED(start, size) \
__msan_unpoison(reinterpret_cast<const void*>(start), (size))
#else // !V8_USE_MEMORY_SANITIZER
#define MSAN_ALLOCATED_UNINITIALIZED_MEMORY(start, size) \
static_assert((std::is_pointer<decltype(start)>::value || \
std::is_same<v8::base::Address, decltype(start)>::value), \
"static type violation"); \
static_assert(std::is_convertible<decltype(size), size_t>::value, \
"static type violation"); \
USE(start, size)
#define MSAN_MEMORY_IS_INITIALIZED(start, size) \
MSAN_ALLOCATED_UNINITIALIZED_MEMORY(start, size)
#endif // V8_USE_MEMORY_SANITIZER
#endif // V8_BASE_SANITIZER_MSAN_H_
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