From 2280477a96e19ba5060de2d48dcc8fd7c8079d22 Mon Sep 17 00:00:00 2001 From: Enrico Tassi Date: Fri, 13 Nov 2015 11:31:34 +0100 Subject: Imported Upstream version 8.5~beta3+dfsg --- test-suite/bugs/closed/4232.v | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 test-suite/bugs/closed/4232.v (limited to 'test-suite/bugs/closed/4232.v') diff --git a/test-suite/bugs/closed/4232.v b/test-suite/bugs/closed/4232.v new file mode 100644 index 00000000..61e544a9 --- /dev/null +++ b/test-suite/bugs/closed/4232.v @@ -0,0 +1,20 @@ +Require Import Setoid Morphisms Vector. + +Class Equiv A := equiv : A -> A -> Prop. +Class Setoid A `{Equiv A} := setoid_equiv:> Equivalence (equiv). + +Global Declare Instance vec_equiv {A} `{Equiv A} {n}: Equiv (Vector.t A n). +Global Declare Instance vec_setoid A `{Setoid A} n : Setoid (Vector.t A n). + +Global Declare Instance tl_proper1 {A} `{Equiv A} n: + Proper ((equiv) ==> (equiv)) + (@tl A n). + +Lemma test: + forall {A} `{Setoid A} n (xa ya: Vector.t A (S n)), + (equiv xa ya) -> equiv (tl xa) (tl ya). +Proof. + intros A R HA n xa ya Heq. + setoid_rewrite Heq. + reflexivity. +Qed. -- cgit v1.2.3