diff options
| -rw-r--r-- | kernel/uGraph.ml | 6 | ||||
| -rw-r--r-- | test-suite/bugs/closed/bug_12909.v | 8 |
2 files changed, 14 insertions, 0 deletions
diff --git a/kernel/uGraph.ml b/kernel/uGraph.ml index 927db9e9e6..52e93a9e22 100644 --- a/kernel/uGraph.ml +++ b/kernel/uGraph.ml @@ -142,6 +142,12 @@ let enforce_leq_alg u v g = | Inl x -> x | Inr e -> raise e +let enforce_leq_alg u v g = + match Universe.is_sprop u, Universe.is_sprop v with + | true, true -> Constraint.empty, g + | true, false | false, true -> raise (UniverseInconsistency (Le, u, v, None)) + | false, false -> enforce_leq_alg u v g + (* sanity check wrapper *) let enforce_leq_alg u v g = let _,g as cg = enforce_leq_alg u v g in diff --git a/test-suite/bugs/closed/bug_12909.v b/test-suite/bugs/closed/bug_12909.v new file mode 100644 index 0000000000..fafb6a418f --- /dev/null +++ b/test-suite/bugs/closed/bug_12909.v @@ -0,0 +1,8 @@ +Module Type T. +Axiom A : Type. +End T. + +Module M. + Axiom A : SProp. +End M. +Fail Module N <: T := M. |