diff options
Diffstat (limited to 'compiler/typecheck/TcRnDriver.hs')
| -rw-r--r-- | compiler/typecheck/TcRnDriver.hs | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/compiler/typecheck/TcRnDriver.hs b/compiler/typecheck/TcRnDriver.hs index 107162b31f..dafc4b8636 100644 --- a/compiler/typecheck/TcRnDriver.hs +++ b/compiler/typecheck/TcRnDriver.hs @@ -999,7 +999,7 @@ checkBootTyCon is_boot tc1 tc2 check (roles1 == roles2) roles_msg `andThenCheck` check (eqTypeX env syn_rhs1 syn_rhs2) empty -- nothing interesting to say - -- A skolem abstract TyCon can be implemented using a type synonym, but ONLY + -- An abstract TyCon can be implemented using a type synonym, but ONLY -- if the type synonym is nullary and has no type family applications. -- This arises from two properties of skolem abstract data: -- @@ -1011,7 +1011,8 @@ checkBootTyCon is_boot tc1 tc2 -- -- See also 'HowAbstract' and Note [Skolem abstract data]. -- - | isSkolemAbstractTyCon tc1 + | isAbstractTyCon tc1 + , not is_boot -- don't support for hs-boot yet , Just (tvs, ty) <- synTyConDefn_maybe tc2 , Just (tc2', args) <- tcSplitTyConApp_maybe ty = check (null (tcTyFamInsts ty)) @@ -1117,7 +1118,7 @@ checkBootTyCon is_boot tc1 tc2 (text "Roles on abstract types default to" <+> quotes (text "representational") <+> text "in boot files.") - eqAlgRhs _ (AbstractTyCon _) _rhs2 + eqAlgRhs _ AbstractTyCon _rhs2 = checkSuccess -- rhs2 is guaranteed to be injective, since it's an AlgTyCon eqAlgRhs _ tc1@DataTyCon{} tc2@DataTyCon{} = checkListBy eqCon (data_cons tc1) (data_cons tc2) (text "constructors") |