File: bug_3125.v

package info (click to toggle)
coq 8.20.1%2Bdfsg-1
  • links: PTS, VCS
  • area: main
  • in suites: sid, trixie
  • size: 44,116 kB
  • sloc: ml: 234,160; sh: 4,301; python: 3,270; ansic: 2,644; makefile: 882; lisp: 172; javascript: 63; xml: 24; sed: 2
file content (31 lines) | stat: -rw-r--r-- 567 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
(* Not considering singleton template-polymorphic inductive types as
   propositions for injection/inversion *)

(* This is also #4560 and #6273 *)

#[universes(template)]
#[warnings="-no-template-universe"]
Inductive foo := foo_1.

Add Keep Equalities foo.

Goal forall (a b : foo), Some a = Some b -> a = b.
Proof.
  intros a b H.
  inversion H.
  reflexivity.
Qed.

(* Check that Prop is not concerned *)

Inductive bar : Prop := bar_1.

Goal
  forall (a b : bar),
    Some a = Some b ->
    a = b.
Proof.
  intros a b H.
  inversion H.
  Fail reflexivity.
Abort.