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Diffstat (limited to 'compiler/GHC/Tc/TyCl/Utils.hs')
| -rw-r--r-- | compiler/GHC/Tc/TyCl/Utils.hs | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/compiler/GHC/Tc/TyCl/Utils.hs b/compiler/GHC/Tc/TyCl/Utils.hs index 0528976a6b..2e8b5124fc 100644 --- a/compiler/GHC/Tc/TyCl/Utils.hs +++ b/compiler/GHC/Tc/TyCl/Utils.hs @@ -580,8 +580,8 @@ irDataCon :: DataCon -> RoleM () irDataCon datacon = setRoleInferenceVars univ_tvs $ irExTyVars ex_tvs $ \ ex_var_set -> - mapM_ (irType ex_var_set) - (map tyVarKind ex_tvs ++ eqSpecPreds eq_spec ++ theta ++ (map scaledThing arg_tys)) + do mapM_ (irType ex_var_set) (eqSpecPreds eq_spec ++ theta ++ map scaledThing arg_tys) + mapM_ (markNominal ex_var_set) (map tyVarKind ex_tvs ++ map scaledMult arg_tys) -- Field multiplicities are nominal (#18799) -- See Note [Role-checking data constructor arguments] where (univ_tvs, ex_tvs, eq_spec, theta, arg_tys, _res_ty) |