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-rw-r--r--toplevel/classes.ml4
1 files changed, 2 insertions, 2 deletions
diff --git a/toplevel/classes.ml b/toplevel/classes.ml
index d6a6162f9..26cb7451a 100644
--- a/toplevel/classes.ml
+++ b/toplevel/classes.ml
@@ -66,8 +66,8 @@ let existing_instance glob g pri =
match class_of_constr r with
| Some (_, ((tc,u), _)) -> add_instance (new_instance tc pri glob
(*FIXME*) (Flags.use_polymorphic_flag ()) c)
- | None -> user_err_loc (loc_of_reference g, "declare_instance",
- Pp.str "Constant does not build instances of a declared type class.")
+ | None -> user_err ~loc:(loc_of_reference g) "declare_instance"
+ (Pp.str "Constant does not build instances of a declared type class.")
let mismatched_params env n m = mismatched_ctx_inst env Parameters n m
let mismatched_props env n m = mismatched_ctx_inst env Properties n m