X-Git-Url: https://git.martlubbers.net/?a=blobdiff_plain;f=sem.dcl;h=b34bbc35e8f98f60f5e71a6c73b40d461df60f09;hb=249bdba5121bca15012597a09e63a242781b001b;hp=5c01ba0c5dcbec8ecb3394e5e9a157ce779674ac;hpb=8c4ec1c3287d6c6ddefd22ef608a4d97693e7e85;p=cc1516.git

diff --git a/sem.dcl b/sem.dcl
index 5c01ba0..b34bbc3 100644
--- a/sem.dcl
+++ b/sem.dcl
@@ -2,10 +2,12 @@ definition module sem
 
 from Data.Either import :: Either
 from AST import :: AST, :: Pos, :: Type
+from StdOverloaded import class toString
 
 :: SemError 
 	= ParseError Pos String 
 	| UnifyError Pos Type Type 
+	| UnifyErrorStub Type Type 
 	| Error String
 :: SemOutput :== Either [SemError] AST