From f9526a2bcd05174b7adfe56b7375f0306a2a1e6d Mon Sep 17 00:00:00 2001
From: Pierre-Marie Pédrot
Date: Thu, 23 Mar 2017 08:38:00 +0100
Subject: Fast path for implicit tactic solving.

We make apparent in the API that the implicit tactic is set or not. This was
costing a lot in Pretyping for no useful reason, as it is almost always unset
and the default implementation was just failing immediately.
---
 tactics/tactics.ml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'tactics')

diff --git a/tactics/tactics.ml b/tactics/tactics.ml
index 1e8082f882..8b3442c05b 100644
--- a/tactics/tactics.ml
+++ b/tactics/tactics.ml
@@ -1146,7 +1146,7 @@ let run_delayed env sigma c =
 let tactic_infer_flags with_evar = {
   Pretyping.use_typeclasses = true;
   Pretyping.solve_unification_constraints = true;
-  Pretyping.use_hook = Some solve_by_implicit_tactic;
+  Pretyping.use_hook = solve_by_implicit_tactic ();
   Pretyping.fail_evar = not with_evar;
   Pretyping.expand_evars = true }
 
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