diff -r c2d95df2c54e -r 7cbd1b2c139b hotspot/src/share/vm/c1/c1_GraphBuilder.cpp
--- a/hotspot/src/share/vm/c1/c1_GraphBuilder.cpp	Mon Oct 19 15:03:58 2015 +0200
+++ b/hotspot/src/share/vm/c1/c1_GraphBuilder.cpp	Thu Oct 22 13:07:10 2015 -0400
@@ -3823,8 +3823,8 @@
   caller_state->truncate_stack(args_base);
   assert(callee_state->stack_size() == 0, "callee stack must be empty");
 
-  Value lock;
-  BlockBegin* sync_handler;
+  Value lock = NULL;
+  BlockBegin* sync_handler = NULL;
 
   // Inline the locking of the receiver if the callee is synchronized
   if (callee->is_synchronized()) {