1// Copyright 2013 the V8 project authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5// MemorySanitizer support.
6
7#ifndef V8_MSAN_H_
8#define V8_MSAN_H_
9
10#include "src/globals.h"
11
12#ifndef __has_feature
13# define __has_feature(x) 0
14#endif
15
16#if __has_feature(memory_sanitizer) && !defined(MEMORY_SANITIZER)
17# define MEMORY_SANITIZER
18#endif
19
20#if defined(MEMORY_SANITIZER)
21# include <sanitizer/msan_interface.h>  // NOLINT
22
23// Marks a memory range as uninitialized, as if it was allocated here.
24# define MSAN_ALLOCATED_UNINITIALIZED_MEMORY(p, s) \
25    __msan_allocated_memory((p), (s))
26// Marks a memory range as initialized.
27#define MSAN_MEMORY_IS_INITIALIZED(p, s) __msan_unpoison((p), (s))
28#else
29# define MSAN_ALLOCATED_UNINITIALIZED_MEMORY(p, s)
30#define MSAN_MEMORY_IS_INITIALIZED(p, s)
31#endif
32
33#endif  // V8_MSAN_H_
34