--- a/hotspot/src/cpu/zero/vm/stack_zero.cpp	Wed Apr 12 17:53:18 2017 +0200
+++ b/hotspot/src/cpu/zero/vm/stack_zero.cpp	Tue Jul 04 15:58:10 2017 +0200
@@ -39,7 +39,7 @@
   assert(needs_setup(), "already set up");
   int abi_available = abi_stack_available(thread);
   assert(abi_available >= 0, "available abi stack must be >= 0");
-  return align_size_down(abi_available / 2, wordSize);
+  return align_down(abi_available / 2, wordSize);
 }
 
 void ZeroStack::handle_overflow(TRAPS) {