From 25ffe7f97a907d3508848c81c3e8dcc89559aadd Mon Sep 17 00:00:00 2001
From: Matthieu Sozeau
Date: Fri, 27 May 2016 13:51:51 +0200
Subject: Univs: earlier errors for strict univ decls #4527

When declaring the universes of a lemma explicitely, throw an error if
after minimization the type of a lemma still refers to unbound
universes. This is a fix and an incompatibility, but scripts
will be backwards compatible themselves.
Fix another minor bug in treating universe binders for (Co)Fixpoint.
---
 stm/lemmas.ml | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'stm')

diff --git a/stm/lemmas.ml b/stm/lemmas.ml
index 50dceb8e6b..6b78ce72cc 100644
--- a/stm/lemmas.ml
+++ b/stm/lemmas.ml
@@ -465,6 +465,11 @@ let start_proof_com kind thms hook =
   let recguard,thms,snl = look_for_possibly_mutual_statements thms in
   let evd, nf = Evarutil.nf_evars_and_universes !evdref in
   let thms = List.map (fun (n, (t, info)) -> (n, (nf t, info))) thms in
+  let () =
+    match levels with
+    | None -> ()
+    | Some l -> ignore (Evd.universe_context evd ?names:l)
+  in
   let evd =
     if pi2 kind then evd
     else (* We fix the variables to ensure they won't be lowered to Set *)
-- 
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