From 9043add656177eeac1491a73d2f3ab92bec0013c Mon Sep 17 00:00:00 2001 From: Benjamin Barenblat Date: Sat, 29 Dec 2018 14:31:27 -0500 Subject: Imported Upstream version 8.8.2 --- test-suite/modules/cumpoly.v | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 test-suite/modules/cumpoly.v (limited to 'test-suite/modules/cumpoly.v') diff --git a/test-suite/modules/cumpoly.v b/test-suite/modules/cumpoly.v new file mode 100644 index 00000000..654b86cb --- /dev/null +++ b/test-suite/modules/cumpoly.v @@ -0,0 +1,19 @@ +Set Universe Polymorphism. + +(** Check that variance subtyping is respected. The signature T is asking for + invariance, while M provide an irrelevant implementation, which is deemed + legit. + + There is currently no way to go the other way around, so it's not possible + to generate a counter-example that should fail with the wrong subtyping. +*) + +Module Type T. +Parameter t@{i|Set <= i} : Type@{i}. +Cumulative Inductive I@{i|Set <= i} : Type@{i} := C : t@{i} -> I. +End T. + +Module M : T. +Definition t@{i|Set <= i} : Type@{i} := nat. +Cumulative Inductive I@{i|Set <= i} : Type@{i} := C : t@{i} -> I. +End M. -- cgit v1.2.3