1 files changed, 36 insertions, 0 deletions
diff --git a/deps/v8/src/sanitizer/msan.h b/deps/v8/src/sanitizer/msan.h
new file mode 100644
index 0000000000..01e774e7e4
--- /dev/null
+++ b/deps/v8/src/sanitizer/msan.h
@@ -0,0 +1,36 @@
+// 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_SANITIZER_MSAN_H_
+#define V8_SANITIZER_MSAN_H_
+
+#include "src/base/macros.h"
+#include "src/common/globals.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(p, s) \
+  __msan_allocated_memory(reinterpret_cast<const void*>(p), (s))
+// Marks a memory range as initialized.
+#define MSAN_MEMORY_IS_INITIALIZED(p, s) \
+  __msan_unpoison(reinterpret_cast<const void*>(p), (s))
+
+#else  // !V8_USE_MEMORY_SANITIZER
+
+#define MSAN_ALLOCATED_UNINITIALIZED_MEMORY(p, s)                            \
+  static_assert((std::is_pointer<decltype(p)>::value ||                      \
+                 std::is_same<v8::internal::Address, decltype(p)>::value) && \
+                    std::is_convertible<decltype(s), size_t>::value,         \
+                "static type violation")
+#define MSAN_MEMORY_IS_INITIALIZED(p, s) \
+  MSAN_ALLOCATED_UNINITIALIZED_MEMORY(p, s)
+
+#endif  // V8_USE_MEMORY_SANITIZER
+
+#endif  // V8_SANITIZER_MSAN_H_