From a4c7f8bd98be2a200489325ff7c5061cf80ab4f3 Mon Sep 17 00:00:00 2001 From: Enrico Tassi Date: Tue, 27 Dec 2016 16:53:30 +0100 Subject: Imported Upstream version 8.6 --- test-suite/bugs/opened/4778.v | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 test-suite/bugs/opened/4778.v (limited to 'test-suite/bugs/opened/4778.v') diff --git a/test-suite/bugs/opened/4778.v b/test-suite/bugs/opened/4778.v new file mode 100644 index 00000000..633d158e --- /dev/null +++ b/test-suite/bugs/opened/4778.v @@ -0,0 +1,35 @@ +Require Import Coq.Setoids.Setoid Coq.Classes.Morphisms. +Definition f (v : option nat) := match v with + | Some k => Some k + | None => None + end. + +Axioms F G : (option nat -> option nat) -> Prop. +Axiom FG : forall f, f None = None -> F f = G f. + +Axiom admit : forall {T}, T. + +Existing Instance eq_Reflexive. + +(* This instance is needed in 8.4, but is useless in 8.5 *) +Global Instance foo (A := nat) + : Proper ((pointwise_relation _ eq) + ==> eq ==> forall_relation (fun _ => Basics.flip Basics.impl)) + (@option_rect A (fun _ => Prop)) | 0. +exact admit. +Qed. + +(* +(* This is required in 8.5, but useless in 8.4 *) +Global Instance bar (A := nat) + : Proper ((pointwise_relation _ eq) + ==> eq ==> eq ==> Basics.flip Basics.impl) + (@option_rect A (fun _ => Prop)) | 0. +exact admit. +Qed. +*) + +Goal forall k, option_rect (fun _ => Prop) (fun v : nat => v = v /\ F f) True k. Proof. + intro. + pose proof (_ : (Proper (_ ==> eq ==> _) and)). + Fail setoid_rewrite (FG _ _); [ | reflexivity.. ]. (* this should succeed without [Fail], as it does in 8.4 *) -- cgit v1.2.3