diff options
Diffstat (limited to 'compiler/GHC/Core/Type.hs')
| -rw-r--r-- | compiler/GHC/Core/Type.hs | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/compiler/GHC/Core/Type.hs b/compiler/GHC/Core/Type.hs index 76326b6c50..1ef00b0977 100644 --- a/compiler/GHC/Core/Type.hs +++ b/compiler/GHC/Core/Type.hs @@ -1732,7 +1732,7 @@ tyConBindersPiTyBinders :: [TyConBinder] -> [PiTyBinder] tyConBindersPiTyBinders = map to_tyb where to_tyb (Bndr tv (NamedTCB vis)) = Named (Bndr tv vis) - to_tyb (Bndr tv (AnonTCB af)) = Anon (tymult (varType tv)) af + to_tyb (Bndr tv AnonTCB) = Anon (tymult (varType tv)) FTF_T_T -- | Make a dependent forall over an 'Inferred' variable mkTyCoInvForAllTy :: TyCoVar -> Type -> Type @@ -1794,7 +1794,7 @@ mkTyConBindersPreferAnon vars inner_tkvs = assert (all isTyVar vars) = ( Bndr v (NamedTCB Required) : binders , fvs `delVarSet` v `unionVarSet` kind_vars ) | otherwise - = ( Bndr v (AnonTCB visArgTypeLike) : binders + = ( Bndr v AnonTCB : binders , fvs `unionVarSet` kind_vars ) where (binders, fvs) = go vs @@ -2488,9 +2488,8 @@ Here are the key kinding rules for types -- in GHC.Builtin.Types.Prim torc is TYPE or CONSTRAINT - ty : body_torc rep - bndr_torc is Type or Constraint - ki : bndr_torc + ty : torc rep + ki : Type `a` is a type variable `a` is not free in rep (FORALL1) ----------------------- @@ -2508,10 +2507,6 @@ Here are the key kinding rules for types Note that: * (FORALL1) rejects (forall (a::Maybe). blah) -* (FORALL1) accepts (forall (a :: t1~t2) blah), where the type variable - (not coercion variable!) 'a' has a kind (t1~t2) that in turn has kind - Constraint. See Note [Constraints in kinds] in GHC.Core.TyCo.Rep. - * (FORALL2) Surprise 1: See GHC.Core.TyCo.Rep Note [Unused coercion variable in ForAllTy] @@ -2809,8 +2804,7 @@ tyConAppNeedsKindSig spec_inj_pos tc n_args injective_vars_of_binder :: TyConBinder -> FV injective_vars_of_binder (Bndr tv vis) = case vis of - AnonTCB af | isVisibleFunArg af - -> injectiveVarsOfType False -- conservative choice + AnonTCB -> injectiveVarsOfType False -- conservative choice (varType tv) NamedTCB argf | source_of_injectivity argf -> unitFV tv `unionFV` |