From 25dca699ebdb42e986d98f3a5ae5ff72bc6b6d8d Mon Sep 17 00:00:00 2001
From: Kathy Gray
Date: Fri, 1 Jul 2016 14:23:52 +0100
Subject: Add missing case to arith_op_no0 Add type refinement to arm spec

---
 src/lem_interp/interp_lib.lem | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src/lem_interp')

diff --git a/src/lem_interp/interp_lib.lem b/src/lem_interp/interp_lib.lem
index 2922db67..5783a095 100644
--- a/src/lem_interp/interp_lib.lem
+++ b/src/lem_interp/interp_lib.lem
@@ -573,7 +573,9 @@ let arith_op_no0 op v =
       | (V_lit(L_aux (L_num x) lx), V_lit(L_aux (L_num y) ly)) -> 
 	if y = 0 
 	then V_lit (L_aux L_undef ly)
-	else V_lit(L_aux (L_num (op x y)) lx)
+        else V_lit(L_aux (L_num (op x y)) lx)
+      | (V_lit (L_aux L_undef lx),_) -> vl
+      | (_, (V_lit (L_aux L_undef ly))) -> vr
       | (V_unknown,_) -> V_unknown
       | (_,V_unknown) -> V_unknown
       | _ -> fail ()
-- 
cgit v1.2.3