Improve error reporting for non-rigid GADT matches

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

diff --git a/compiler/typecheck/TcArrows.lhs b/compiler/typecheck/TcArrows.lhs
index 4593482..ee14eb8 100644 (file)
--- a/compiler/typecheck/TcArrows.lhs
+++ b/compiler/typecheck/TcArrows.lhs
@@ -53,7 +53,7 @@ tcProc pat cmd exp_ty
     do { ((exp_ty1, res_ty), coi) <- boxySplitAppTy exp_ty 
        ; ((arr_ty, arg_ty), coi1) <- boxySplitAppTy exp_ty1
        ; let cmd_env = CmdEnv { cmd_arr = arr_ty }
-       ; (pat', cmd') <- tcProcPat pat arg_ty res_ty $
+       ; (pat', cmd') <- tcPat ProcExpr pat arg_ty res_ty $
                          tcCmdTop cmd_env cmd []
         ; let res_coi = mkTransCoI coi (mkAppTyCoI exp_ty1 coi1 res_ty IdCo)
        ; return (pat', cmd', res_coi) 
@@ -186,8 +186,8 @@ tc_cmd env cmd@(HsLam (MatchGroup [L mtch_loc (match@(Match pats _maybe_rhs_sig
                  (kappaUnderflow cmd)
 
                -- Check the patterns, and the GRHSs inside
-       ; (pats', grhss') <- setSrcSpan mtch_loc                $
-                            tcLamPats pats cmd_stk res_ty      $
+       ; (pats', grhss') <- setSrcSpan mtch_loc                        $
+                            tcPats LambdaExpr pats cmd_stk res_ty      $
                             tc_grhss grhss
 
        ; let match' = L mtch_loc (Match pats' Nothing grhss')