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-rw-r--r--toplevel/autoinstance.ml4
1 files changed, 2 insertions, 2 deletions
diff --git a/toplevel/autoinstance.ml b/toplevel/autoinstance.ml
index 62a97281..4a67ede4 100644
--- a/toplevel/autoinstance.ml
+++ b/toplevel/autoinstance.ml
@@ -1,6 +1,6 @@
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
-(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2010 *)
+(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2011 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
@@ -191,7 +191,7 @@ let declare_class_instance gr ctx params =
let ident = make_instance_ident gr in
let cl = Typeclasses.class_info gr in
let (def,typ) = Typeclasses.instance_constructor cl params in
- let (def,typ) = it_mkLambda_or_LetIn def ctx, it_mkProd_or_LetIn typ ctx in
+ let (def,typ) = it_mkLambda_or_LetIn (Option.get def) ctx, it_mkProd_or_LetIn typ ctx in
let def = deep_refresh_universes def in
let typ = deep_refresh_universes typ in
let ce = Entries.DefinitionEntry