File: bug_9201.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 (22 lines) | stat: -rw-r--r-- 859 bytes parent folder | download | duplicates (4)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
Require Import Coq.setoid_ring.Ring.

Set Universe Polymorphism.
Inductive word : Type -> Type :=.
Axiom wzero : forall sz, word sz.
Axiom wone : forall sz, word sz.
Axiom wplus : forall sz, word sz -> word sz -> word sz.
Axiom wmult : forall sz, word sz -> word sz -> word sz.
Axiom wminus : forall sz, word sz -> word sz -> word sz.
Axiom wneg : forall sz, word sz -> word sz.
Axiom wring : forall sz, ring_theory (wzero sz) (wone sz) (@wplus sz) (@wmult sz) (@wminus sz) (@wneg sz) (@eq _).
Local Unset Universe Polymorphism.
Section foo.
  Context (sz : Type).
  Add Ring word_sz_ring : (wring sz). (* success *)
End foo.
Local Set Universe Polymorphism.
Section foo'.
  Context (sz : Type).
  Fail Add Ring word_sz_ring' : (wring sz).
  (* Error: Cannot add a universe monomorphic declaration when section polymorphic universes are present. *)
End foo'.