diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/type_check.ml | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/type_check.ml b/src/type_check.ml index 320a4a34..74e00784 100644 --- a/src/type_check.ml +++ b/src/type_check.ml @@ -1802,8 +1802,8 @@ and bind_pat env (P_aux (pat_aux, (l, ())) as pat) (Typ_aux (typ_aux, _) as typ) | P_wild -> annot_pat P_wild typ, env | P_cons (hd_pat, tl_pat) -> begin - match typ_aux with - | Typ_app (f, [Typ_arg_aux (Typ_arg_typ ltyp, _)]) when Id.compare f (mk_id "list") = 0 -> + match Env.expand_synonyms env typ with + | Typ_aux (Typ_app (f, [Typ_arg_aux (Typ_arg_typ ltyp, _)]), _) when Id.compare f (mk_id "list") = 0 -> let hd_pat, env = bind_pat env hd_pat ltyp in let tl_pat, env = bind_pat env tl_pat typ in annot_pat (P_cons (hd_pat, tl_pat)) typ, env @@ -1811,8 +1811,8 @@ and bind_pat env (P_aux (pat_aux, (l, ())) as pat) (Typ_aux (typ_aux, _) as typ) end | P_list pats -> begin - match typ_aux with - | Typ_app (f, [Typ_arg_aux (Typ_arg_typ ltyp, _)]) when Id.compare f (mk_id "list") = 0 -> + match Env.expand_synonyms env typ with + | Typ_aux (Typ_app (f, [Typ_arg_aux (Typ_arg_typ ltyp, _)]), _) when Id.compare f (mk_id "list") = 0 -> let rec process_pats env = function | [] -> [], env | (pat :: pats) -> |