diff --git a/go/expressions.h b/go/expressions.h
index a1e3733..3d7e787 100644
--- a/go/expressions.h
+++ b/go/expressions.h
@@ -4410,6 +4410,10 @@
   { return this->slice_info_; }
 
  protected:
+  int
+  do_traverse(Traverse* traverse)
+  { return Expression::traverse(&this->slice_, traverse); }
+
   Type*
   do_type();