Index: compiler-rt/trunk/lib/sanitizer_common/CMakeLists.txt
===================================================================
--- compiler-rt/trunk/lib/sanitizer_common/CMakeLists.txt
+++ compiler-rt/trunk/lib/sanitizer_common/CMakeLists.txt
@@ -56,6 +56,7 @@
   sanitizer_coverage_libcdep.cc
   sanitizer_coverage_libcdep_new.cc
   sanitizer_coverage_mapping_libcdep.cc
+  sanitizer_coverage_win_sections.cc
   sanitizer_linux_libcdep.cc
   sanitizer_posix_libcdep.cc
   sanitizer_stacktrace_libcdep.cc
@@ -211,6 +212,7 @@
     ${SANITIZER_COMMON_SUPPORTED_OS}
     ARCHS ${SANITIZER_COMMON_SUPPORTED_ARCH}
     SOURCES sanitizer_coverage_win_dll_thunk.cc
+            sanitizer_coverage_win_sections.cc
     CFLAGS ${SANITIZER_CFLAGS} -DSANITIZER_DLL_THUNK
     DEFS ${SANITIZER_COMMON_DEFINITIONS})
 
@@ -230,6 +232,7 @@
     ${SANITIZER_COMMON_SUPPORTED_OS}
     ARCHS ${SANITIZER_COMMON_SUPPORTED_ARCH}
     SOURCES sanitizer_coverage_win_dynamic_runtime_thunk.cc
+            sanitizer_coverage_win_sections.cc
     CFLAGS ${SANITIZER_CFLAGS} ${DYNAMIC_RUNTIME_THUNK_CFLAGS}
     DEFS ${SANITIZER_COMMON_DEFINITIONS})
 endif()
Index: compiler-rt/trunk/lib/sanitizer_common/sanitizer_coverage_win_sections.cc
===================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_coverage_win_sections.cc
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_coverage_win_sections.cc
@@ -0,0 +1,22 @@
+//===-- sanitizer_coverage_win_sections.cc --------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines delimiters for Sanitizer Coverage's section.
+//===----------------------------------------------------------------------===//
+
+#include "sanitizer_platform.h"
+#if SANITIZER_WINDOWS
+#include <stdint.h>
+#pragma section(".SCOV$A", read, write)  // NOLINT
+#pragma section(".SCOV$Z", read, write)  // NOLINT
+extern "C" {
+__declspec(allocate(".SCOV$A")) uint32_t __start___sancov_guards = 0;
+__declspec(allocate(".SCOV$Z")) uint32_t __stop___sancov_guards = 0;
+}
+#endif // SANITIZER_WINDOWS