1 files changed, 5 insertions, 1 deletions
diff --git a/gcc/asan.h b/gcc/asan.h
index 590cf35..699820b 100644
--- a/gcc/asan.h
+++ b/gcc/asan.h
@@ -1,5 +1,5 @@
 /* AddressSanitizer, a fast memory error detector.
-   Copyright (C) 2011 Free Software Foundation, Inc.
+   Copyright (C) 2011, 2012 Free Software Foundation, Inc.
    Contributed by Kostya Serebryany <kcc@google.com>
 
 This file is part of GCC.
@@ -23,4 +23,8 @@ along with GCC; see the file COPYING3.  If not see
 
 extern void asan_finish_file(void);
 
+/* Shadow memory is found at
+   (address >> ASAN_SHADOW_SHIFT) | targetm.asan_shadow_offset ().  */
+#define ASAN_SHADOW_SHIFT	3
+
 #endif /* TREE_ASAN */