Index: libsanitizer/configure.tgt
===================================================================
--- libsanitizer/configure.tgt	(revision 195940)
+++ libsanitizer/configure.tgt	(working copy)
@@ -29,7 +29,7 @@ case "${target}" in
 	;;
   sparc*-*-linux*)
 	;;
-  x86_64-*-darwin* | i?86-*-darwin*)
+  x86_64-*-darwin[1]* | i?86-*-darwin[1]*)
 	TSAN_SUPPORTED=no
 	;;
   *)