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-rw-r--r--interp/notation_ops.ml8
1 files changed, 6 insertions, 2 deletions
diff --git a/interp/notation_ops.ml b/interp/notation_ops.ml
index 7f084fffdd..fdf12faa04 100644
--- a/interp/notation_ops.ml
+++ b/interp/notation_ops.ml
@@ -1,6 +1,6 @@
(************************************************************************)
(* * The Coq Proof Assistant / The Coq Development Team *)
-(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *)
+(* v * INRIA, CNRS and contributors - Copyright 1999-2019 *)
(* <O___,, * (see CREDITS file for the list of authors) *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
@@ -1190,7 +1190,11 @@ let rec match_ inner u alp metas sigma a1 a2 =
Array.fold_left2 (match_in u alp metas) sigma bl1 bl2
| GCast(t1, c1), NCast(t2, c2) ->
match_cast (match_in u alp metas) (match_in u alp metas sigma t1 t2) c1 c2
- | GSort (GType _), NSort (GType _) when not u -> sigma
+
+ (* Next pair of lines useful only if not coming from detyping *)
+ | GSort (UNamed [(GProp|GSet),0]), NSort (UAnonymous _) -> raise No_match
+ | GSort _, NSort (UAnonymous _) when not u -> sigma
+
| GSort s1, NSort s2 when glob_sort_eq s1 s2 -> sigma
| GInt i1, NInt i2 when Uint63.equal i1 i2 -> sigma
| GPatVar _, NHole _ -> (*Don't hide Metas, they bind in ltac*) raise No_match