From 7cfc4e5146be5666419451bdd516f1f3f264d24a Mon Sep 17 00:00:00 2001 From: Enrico Tassi Date: Sun, 25 Jan 2015 14:42:51 +0100 Subject: Imported Upstream version 8.5~beta1+dfsg --- test-suite/bugs/closed/1416.v | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 test-suite/bugs/closed/1416.v (limited to 'test-suite/bugs/closed/1416.v') diff --git a/test-suite/bugs/closed/1416.v b/test-suite/bugs/closed/1416.v new file mode 100644 index 00000000..ee092005 --- /dev/null +++ b/test-suite/bugs/closed/1416.v @@ -0,0 +1,30 @@ +(* In 8.1 autorewrite used to raised an anomaly here *) +(* After resolution of the bug, autorewrite succeeded *) +(* From forthcoming 8.4, autorewrite is forbidden to instantiate *) +(* evars, so the new test just checks it is not an anomaly *) + +Set Implicit Arguments. + +Record Place (Env A: Type) : Type := { + read: Env -> A ; + write: Env -> A -> Env ; + write_read: forall (e:Env), (write e (read e))=e +}. + +Hint Rewrite -> write_read: placeeq. + +Record sumPl (Env A B: Type) (vL:(Place Env A)) (vR:(Place Env B)) : Type := + { + mkEnv: A -> B -> Env ; + mkEnv2writeL: forall (e:Env) (x:A), (mkEnv x (read vR e))=(write vL e x) + }. + +(* when the following line is commented, the bug does not appear *) +Hint Rewrite -> mkEnv2writeL: placeeq. + +Lemma autorewrite_raise_anomaly: forall (Env A:Type) (e: Env) (p:Place Env A), + (exists e1:Env, e=(write p e1 (read p e))). +Proof. + intros Env A e p; eapply ex_intro. + autorewrite with placeeq. (* Here is the bug *) + -- cgit v1.2.3