1 files changed, 5 insertions, 1 deletions
diff --git a/X64.hs b/X64.hs
index 26c35dd..0cbf4fc 100644
--- a/X64.hs
+++ b/X64.hs
@@ -190,7 +190,7 @@ instance Stringifiable XRef where
         szword 2 = "word"
         szword 4 = "dword"
         szword 8 = "qword"
-        szword _ = undefined
+        szword s = error $ "Invalid (szword " ++ show s ++ ") in stringify XMem"
 
     stringify (XImm imm) = show imm
 
@@ -283,6 +283,10 @@ xrefSetSize sz (XReg _ r) = XReg sz r
 xrefSetSize sz (XMem _ a b c d) = XMem sz a b c d
 xrefSetSize _ x@(XImm _) = x
 
+offsetXMem :: Offset -> XRef -> XRef
+offsetXMem off (XMem sz mr tup lbl o) = XMem sz mr tup lbl (o + off)
+offsetXMem _ _ = undefined
+
 isXReg :: XRef -> Bool
 isXReg (XReg _ _) = True
 isXReg _ = False