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diff --git a/lib/sanitizer_common/sanitizer_symbolizer_rtems.h b/lib/sanitizer_common/sanitizer_symbolizer_rtems.h
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+++ b/lib/sanitizer_common/sanitizer_symbolizer_rtems.h
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+//===-- sanitizer_symbolizer_rtems.h -----------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is shared between various sanitizers' runtime libraries.
+//
+// Define RTEMS's string formats and limits for the markup symbolizer.
+//===----------------------------------------------------------------------===//
+#ifndef SANITIZER_SYMBOLIZER_RTEMS_H
+#define SANITIZER_SYMBOLIZER_RTEMS_H
+
+#include "sanitizer_internal_defs.h"
+
+namespace __sanitizer {
+
+// The Myriad RTEMS symbolizer currently only parses backtrace lines,
+// so use a format that the symbolizer understands.  For other
+// markups, keep them the same as the Fuchsia's.
+
+// This is used by UBSan for type names, and by ASan for global variable names.
+constexpr const char *kFormatDemangle = "{{{symbol:%s}}}";
+constexpr uptr kFormatDemangleMax = 1024;  // Arbitrary.
+
+// Function name or equivalent from PC location.
+constexpr const char *kFormatFunction = "{{{pc:%p}}}";
+constexpr uptr kFormatFunctionMax = 64;  // More than big enough for 64-bit hex.
+
+// Global variable name or equivalent from data memory address.
+constexpr const char *kFormatData = "{{{data:%p}}}";
+
+// One frame in a backtrace (printed on a line by itself).
+constexpr const char *kFormatFrame = "    [%u] IP: %p";
+
+}  // namespace __sanitizer
+
+#endif  // SANITIZER_SYMBOLIZER_RTEMS_H