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+(************************************************************************)
+(*         *   The Coq Proof Assistant / The Coq Development Team       *)
+(*  v      *   INRIA, CNRS and contributors - Copyright 1999-2018       *)
+(* <O___,, *       (see CREDITS file for the list of authors)           *)
+(*   \VV/  **************************************************************)
+(*    //   *    This file is distributed under the terms of the         *)
+(*         *     GNU Lesser General Public License Version 2.1          *)
+(*         *     (see LICENSE file for the text of the license)         *)
+(************************************************************************)
+
+(* (c) Copyright 2006-2016 Microsoft Corporation and Inria.                  *)
+
+Require Import ssreflect.
+
+Axiom daemon : False. Ltac myadmit := case: daemon.
+
+Class foo (T : Type) := { n : nat }.
+Instance five : foo nat := {| n := 5 |}.
+
+Definition bar T {f : foo T} m : Prop :=
+  @n _ f = m.
+
+Eval compute in (bar nat 7).
+
+Lemma a : True.
+set toto := bar _ 8.
+have titi : bar _ 5.
+  reflexivity.
+have titi2 : bar _ 5 := .
+  Fail reflexivity.
+  by myadmit.
+have totoc (H : bar _ 5) : 3 = 3 := eq_refl.
+move/totoc: nat => _.
+exact I.
+Qed.
+
+Set SsrHave NoTCResolution.
+
+Lemma a' : True.
+set toto := bar _ 8.
+have titi : bar _ 5.
+  Fail reflexivity.
+  by myadmit.
+have titi2 : bar _ 5 := .
+  Fail reflexivity.
+  by myadmit.
+have totoc (H : bar _ 5) : 3 = 3 := eq_refl.
+move/totoc: nat => _.
+exact I.
+Qed.