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Diffstat (limited to 'compiler/GHC/Hs/Expr.hs')
| -rw-r--r-- | compiler/GHC/Hs/Expr.hs | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/compiler/GHC/Hs/Expr.hs b/compiler/GHC/Hs/Expr.hs index 648b075f71..0ade8a247d 100644 --- a/compiler/GHC/Hs/Expr.hs +++ b/compiler/GHC/Hs/Expr.hs @@ -577,8 +577,9 @@ data RecordUpdTc = RecordUpdTc , rupd_in_tys :: [Type] -- Argument types of *input* record type , rupd_out_tys :: [Type] -- and *output* record type - -- The original type can be reconstructed - -- with conLikeResTy + -- For a data family, these are the type args of the + -- /representation/ type constructor + , rupd_wrap :: HsWrapper -- See note [Record Update HsWrapper] } |