X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Ftypecheck%2FTcInstDcls.lhs;h=f84f3d52d46a4b8ea48c1a340e87fa8d3b99c795;hb=820ddd55446773b33c797267bcad9e09a621ab2b;hp=f4e338d096c2a19f18776fa63d42d6bd84719973;hpb=3d16d9d805e321c58459d0b62223591c19013060;p=ghc-hetmet.git

diff --git a/compiler/typecheck/TcInstDcls.lhs b/compiler/typecheck/TcInstDcls.lhs
index f4e338d..f84f3d5 100644
--- a/compiler/typecheck/TcInstDcls.lhs
+++ b/compiler/typecheck/TcInstDcls.lhs
@@ -1249,7 +1249,7 @@ instDeclCtxt2 :: Type -> SDoc
 instDeclCtxt2 dfun_ty
   = inst_decl_ctxt (ppr (mkClassPred cls tys))
   where
-    (_,cls,tys) = tcSplitDFunTy dfun_ty
+    (_,_,cls,tys) = tcSplitDFunTy dfun_ty
 
 inst_decl_ctxt :: SDoc -> SDoc
 inst_decl_ctxt doc = ptext (sLit "In the instance declaration for") <+> quotes doc