diff options
author | Benjamin Barenblat <bbaren@debian.org> | 2018-12-29 14:31:27 -0500 |
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committer | Benjamin Barenblat <bbaren@debian.org> | 2018-12-29 14:31:27 -0500 |
commit | 9043add656177eeac1491a73d2f3ab92bec0013c (patch) | |
tree | 2b0092c84bfbf718eca10c81f60b2640dc8cab05 /test-suite/modules/cumpoly.v | |
parent | a4c7f8bd98be2a200489325ff7c5061cf80ab4f3 (diff) |
Imported Upstream version 8.8.2upstream/8.8.2
Diffstat (limited to 'test-suite/modules/cumpoly.v')
-rw-r--r-- | test-suite/modules/cumpoly.v | 19 |
1 files changed, 19 insertions, 0 deletions
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. |