From a9541e2ee557c04c4bc3476a36a87bc7fcdb06bb Mon Sep 17 00:00:00 2001
From: Pierre-Marie Pédrot
Date: Tue, 23 Jun 2020 12:49:46 +0200
Subject: Ensure statically that Hint Extern comes with a pattern.

---
 tactics/auto.ml | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'tactics/auto.ml')

diff --git a/tactics/auto.ml b/tactics/auto.ml
index 0931c3e61e..488bcb5208 100644
--- a/tactics/auto.ml
+++ b/tactics/auto.ml
@@ -369,8 +369,7 @@ and tac_of_hint dbg db_list local_db concl (flags, h) =
          let info = Exninfo.reify () in
          Tacticals.New.tclFAIL ~info 0 (str"Unbound reference")
        end
-    | Extern tacast ->
-      let p = FullHint.pattern h in
+    | Extern (p, tacast) ->
       conclPattern concl p tacast
   in
   let pr_hint env sigma =
-- 
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