msan.h

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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_MSAN_H_
#define V8_MSAN_H_
 
#include "src/globals.h"
 
#ifndef __has_feature
# define __has_feature(x) 0
#endif
 
#if __has_feature(memory_sanitizer) && !defined(MEMORY_SANITIZER)
# define MEMORY_SANITIZER
#endif
 
#if defined(MEMORY_SANITIZER)
# include <sanitizer/msan_interface.h>  // NOLINT
 
// Marks a memory range as uninitialized, as if it was allocated here.
# define MSAN_ALLOCATED_UNINITIALIZED_MEMORY(p, s) \
    __msan_allocated_memory((p), (s))
// Marks a memory range as initialized.
#define MSAN_MEMORY_IS_INITIALIZED(p, s) __msan_unpoison((p), (s))
#else
# define MSAN_ALLOCATED_UNINITIALIZED_MEMORY(p, s)
#define MSAN_MEMORY_IS_INITIALIZED(p, s)
#endif
 
#endif  // V8_MSAN_H_