diff options
| -rw-r--r-- | toplevel/classes.ml | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/toplevel/classes.ml b/toplevel/classes.ml index 62a7ebb445..9c21366d28 100644 --- a/toplevel/classes.ml +++ b/toplevel/classes.ml @@ -146,7 +146,7 @@ let new_instance ?(abstract=false) ?(global=false) ctx (instid, bk, cl) props let tclass = if generalize then CGeneralization (dummy_loc, Implicit, Some AbsPi, tclass) else tclass in let k, cty, ctx', ctx, len, imps, subst = let (env', ctx), imps = interp_context_evars evars env ctx in - let c', imps' = interp_type_evars_impls ~evdref:evars env' tclass in + let c', imps' = interp_type_evars_impls ~evdref:evars ~fail_evar:false env' tclass in let len = List.length ctx in let imps = imps @ Impargs.lift_implicits len imps' in let ctx', c = decompose_prod_assum c' in |