From 00191b7dea128e21abcde02cc45b02d23c205595 Mon Sep 17 00:00:00 2001
From: Hugo Herbelin <Hugo.Herbelin@inria.fr>
Date: Sat, 17 Feb 2018 23:57:47 +0100
Subject: Add an invariant on given up goals in class_tactics.

---
 tactics/class_tactics.ml | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'tactics')

diff --git a/tactics/class_tactics.ml b/tactics/class_tactics.ml
index 031f0bc0e..0260460e6 100644
--- a/tactics/class_tactics.ml
+++ b/tactics/class_tactics.ml
@@ -973,6 +973,8 @@ module Search = struct
          let (), pv', (unsafe, shelved, gaveup), _ =
            Proofview.apply env tac pv
          in
+         if not (List.is_empty gaveup) then
+           CErrors.anomaly (Pp.str "run_on_evars not assumed to apply tactics generating given up goals.");
          if Proofview.finished pv' then
            let evm' = Proofview.return pv' in
            assert(Evd.fold_undefined (fun ev _ acc ->
-- 
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