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[ghc-hetmet.git] / compiler / typecheck / TcMatches.lhs

diff --git a/compiler/typecheck/TcMatches.lhs b/compiler/typecheck/TcMatches.lhs
index cbe5940..cb18b04 100644 (file)
--- a/compiler/typecheck/TcMatches.lhs
+++ b/compiler/typecheck/TcMatches.lhs
@@ -65,7 +65,8 @@ tcMatchesFun fun_name inf matches exp_ty
           -- sensible location.        Note: we have to do this odd
           -- ann-grabbing, because we don't always have annotations in
           -- hand when we call tcMatchesFun...
-         checkArgs fun_name matches
+          traceTc (text "tcMatchesFun" <+> (ppr fun_name $$ ppr exp_ty))
+       ; checkArgs fun_name matches
 
        -- ToDo: Don't use "expected" stuff if there ain't a type signature
        -- because inconsistency between branches
@@ -441,6 +442,7 @@ tcLcStmt m_tc ctxt (GroupStmt stmts bindersMap by using) elt_ty thing_inside
                 -- Ensure that every old binder of type b is linked up with its new binder which should have type [b]
        ; let list_bndr_ids = zipWith mk_list_bndr list_bndr_names bndr_ids
              bindersMap' = bndr_ids `zip` list_bndr_ids
+            -- See Note [GroupStmt binder map] in HsExpr
             
        ; using' <- case using of
                      Left  e -> do { e' <- tcPolyExpr e         using_ty; return (Left  e') }