diff --git a/go/expressions.cc b/go/expressions.cc
index eb23ec2..6f9c1c9 100644
--- a/go/expressions.cc
+++ b/go/expressions.cc
@@ -5655,7 +5655,7 @@
 
   Type_context subcontext(*context);
 
-  if (is_constant_expr)
+  if (is_constant_expr && !is_shift_op)
     {
       subcontext.type = NULL;
       subcontext.may_be_abstract = true;