--- old/src/cpu/zero/vm/globals_zero.hpp	2017-06-01 17:27:41.613208105 +0200
+++ new/src/cpu/zero/vm/globals_zero.hpp	2017-06-01 17:27:41.535208207 +0200
@@ -79,6 +79,7 @@
 define_pd_global(bool, PreserveFramePointer, false);
 
 define_pd_global(bool, ValueTypePassFieldsAsArgs, false);
+define_pd_global(bool, ValueTypeReturnedAsFields, false);
 
 // No performance work done here yet.
 define_pd_global(bool, CompactStrings, false);