Imported Upstream version 8.2~beta4+dfsgupstream/8.2.beta4+dfsg

1 files changed, 17 insertions, 0 deletions

diff --git a/test-suite/success/CanonicalStructure.v b/test-suite/success/CanonicalStructure.v
index 44d21b83..b8cae471 100644
--- a/test-suite/success/CanonicalStructure.v
+++ b/test-suite/success/CanonicalStructure.v
@@ -12,3 +12,20 @@ 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).