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diff --git a/runtime/Sanitizer/sanitizer_common/sanitizer_internal_defs.h b/runtime/Sanitizer/sanitizer_common/sanitizer_internal_defs.h
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+++ b/runtime/Sanitizer/sanitizer_common/sanitizer_internal_defs.h
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+//===-- sanitizer_internal_defs.h -------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is shared between AddressSanitizer and ThreadSanitizer.
+// It contains macro used in run-time libraries code.
+//===----------------------------------------------------------------------===//
+#ifndef SANITIZER_DEFS_H
+#define SANITIZER_DEFS_H
+
+#include "sanitizer_platform.h"
+
+// For portability reasons we do not include stddef.h, stdint.h or any other
+// system header, but we do need some basic types that are not defined
+// in a portable way by the language itself.
+namespace __sanitizer {
+
+#if defined(_WIN64)
+// 64-bit Windows uses LLP64 data model.
+typedef unsigned long long uptr;
+typedef signed long long sptr;
+#else
+#if (SANITIZER_WORDSIZE == 64) || defined(__APPLE__) || defined(_WIN32)
+typedef unsigned long uptr;
+typedef signed long sptr;
+#else
+typedef unsigned int uptr;
+typedef signed int sptr;
+#endif
+#endif // defined(_WIN64)
+
+typedef unsigned char u8;
+typedef unsigned short u16;
+typedef unsigned int u32;
+typedef unsigned long long u64;
+typedef signed char s8;
+typedef signed short s16;
+typedef signed int s32;
+typedef signed long long s64;
+
+} // namespace __sanitizer
+
+namespace __ubsan {
+using namespace __sanitizer;
+}
+
+#endif // SANITIZER_DEFS_H