From f54192a50eaf14852e1462f24e4168aa8a8545fe Mon Sep 17 00:00:00 2001
From: Maxime Dénès
Date: Fri, 20 Jul 2018 18:01:18 +0200
Subject: Coercions cleanup: use GlobRef.t instead of constr

---
 plugins/firstorder/ground.ml | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

(limited to 'plugins/firstorder')

diff --git a/plugins/firstorder/ground.ml b/plugins/firstorder/ground.ml
index 4e3ba57308..3901a951f0 100644
--- a/plugins/firstorder/ground.ml
+++ b/plugins/firstorder/ground.ml
@@ -13,17 +13,16 @@ open Formula
 open Sequent
 open Rules
 open Instances
-open Constr
 open Tacmach.New
 open Tacticals.New
+open Globnames
 
 let update_flags ()=
   let predref=ref Names.Cpred.empty in
-  let f coe=
-    try
-      let kn= fst (destConst (Classops.get_coercion_value coe)) in
-	predref:=Names.Cpred.add kn !predref
-    with DestKO -> ()
+  let f coe =
+    match coe.Classops.coe_value with
+    | ConstRef c -> predref := Names.Cpred.add c !predref
+    | _ -> ()
   in
     List.iter f (Classops.coercions ());
     red_flags:=
-- 
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