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(* Bug #1172 *)
Structure foo : Type := Foo {
A : Set; Aopt := option A; unopt : Aopt -> A
}.
Canonical Structure unopt_nat := @Foo nat (fun _ => O).
(* Granted wish #1187 *)
Record Silly (X : Set) : Set := mkSilly { x : X }.
Definition anotherMk := mkSilly.
Definition struct := anotherMk nat 3.
Canonical Structure struct.
(* Intertwinning canonical structures and delta-expansion *)
(* Assia's short example *)
Open Scope bool_scope.
Set Implicit Arguments.
Structure test_struct : Type := mk_test {dom :> Type; f : dom -> dom -> bool}.
Notation " x != y":= (f _ x y)(at level 10).
Canonical Structure bool_test := mk_test (fun x y => x || y).
Definition b := bool.
Check (fun x : b => x != x).
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