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author | 2015-05-11 11:17:54 +0200 | |
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committer | 2015-05-11 11:17:54 +0200 | |
commit | 7bc1610376fac29397be39d4a06b178e8e35e66e (patch) | |
tree | 7149a4b12b041dcc102598b187c2ad4be396b5f5 /test-suite/bugs/closed/4232.v | |
parent | 138bd9756a0fc80647427b2894ba4485f3e6961b (diff) |
Test for bug #4232.
Diffstat (limited to 'test-suite/bugs/closed/4232.v')
-rw-r--r-- | test-suite/bugs/closed/4232.v | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/test-suite/bugs/closed/4232.v b/test-suite/bugs/closed/4232.v new file mode 100644 index 000000000..61e544a91 --- /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. |