diff --git a/vm/vm.hpp b/vm/vm.hpp
index 1b0274e0b1..f72076c7b1 100644
--- a/vm/vm.hpp
+++ b/vm/vm.hpp
@@ -221,6 +221,9 @@ struct factorvm {
 	bool growing_data_heap;
 	data_heap *old_data_heap;
 
+	DEFPUSHPOP(gc_local_,gc_locals)
+
+
 	void init_data_gc();
 	object *copy_untagged_object_impl(object *pointer, cell size);
 	object *copy_object_impl(object *untagged);