From d37aab528dca587127b9f9944e1521e4fc3d9cc7 Mon Sep 17 00:00:00 2001
From: Matthieu Sozeau
Date: Wed, 7 Oct 2015 13:11:52 +0200
Subject: Univs: add Strict Universe Declaration option (on by default)

This option disallows "declare at first use" semantics for universe
variables (in @{}), forcing the declaration of _all_ universes appearing
in a definition when introducing it with syntax Definition/Inductive
foo@{i j k} .. The bound universes at the end of a definition/inductive
must be exactly those ones, no extras allowed currently.
Test-suite files using the old semantics just disable the option.
---
 test-suite/success/namedunivs.v   |  2 ++
 test-suite/success/polymorphism.v |  2 ++
 test-suite/success/univnames.v    | 26 ++++++++++++++++++++++++++
 3 files changed, 30 insertions(+)
 create mode 100644 test-suite/success/univnames.v

(limited to 'test-suite/success')

diff --git a/test-suite/success/namedunivs.v b/test-suite/success/namedunivs.v
index 059462fac3..f9154ef576 100644
--- a/test-suite/success/namedunivs.v
+++ b/test-suite/success/namedunivs.v
@@ -4,6 +4,8 @@
 (* Fail  exact H. *)
 (* Section . *)
 
+Unset Strict Universe Declaration.
+
 Section lift_strict.
 Polymorphic Definition liftlt := 
   let t := Type@{i} : Type@{k} in
diff --git a/test-suite/success/polymorphism.v b/test-suite/success/polymorphism.v
index 957612ef1d..d6bbfe29ac 100644
--- a/test-suite/success/polymorphism.v
+++ b/test-suite/success/polymorphism.v
@@ -1,3 +1,5 @@
+Unset Strict Universe Declaration.
+
 Module withoutpoly.
 
 Inductive empty :=. 
diff --git a/test-suite/success/univnames.v b/test-suite/success/univnames.v
new file mode 100644
index 0000000000..31d264f645
--- /dev/null
+++ b/test-suite/success/univnames.v
@@ -0,0 +1,26 @@
+Set Universe Polymorphism.
+
+Definition foo@{i j} (A : Type@{i}) (B : Type@{j}) := A.
+
+Set Printing Universes.
+
+Fail Definition bar@{i} (A : Type@{i}) (B : Type) := A.
+
+Definition baz@{i j} (A : Type@{i}) (B : Type@{j}) := (A * B)%type.
+
+Fail Definition bad@{i j} (A : Type@{i}) (B : Type@{j}) : Type := (A * B)%type.
+
+Fail Definition bad@{i} (A : Type@{i}) (B : Type@{j}) : Type := (A * B)%type.
+
+Definition shuffle@{i j} (A : Type@{j}) (B : Type@{i}) := (A * B)%type.
+
+Definition nothing (A : Type) := A.
+
+Inductive bla@{l k} : Type@{k} := blaI : Type@{l} -> bla.
+
+Inductive blacopy@{k l} : Type@{k} := blacopyI : Type@{l} -> blacopy.
+
+
+Universe g.
+
+Inductive blacopy'@{l} : Type@{g} := blacopy'I : Type@{l} -> blacopy'.
\ No newline at end of file
-- 
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