Added regression test for bug #3023 which was solved by Matthieu's

commit r16134 (eta was missing in Flexible/Rigid and
SemiFlexible/Rigid conversion problems).

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16409 85f007b7-540e-0410-9357-904b9bb8a0f7

1 files changed, 31 insertions, 0 deletions

diff --git a/test-suite/bugs/closed/3023.v b/test-suite/bugs/closed/3023.v
new file mode 100644
index 000000000..ed4895115
--- /dev/null
+++ b/test-suite/bugs/closed/3023.v
@@ -0,0 +1,31 @@
+(* Checking use of eta on Flexible/Rigid and SemiFlexible/Rigid unif problems *)
+
+Set Implicit Arguments.
+Generalizable All Variables.
+
+Record Category {obj : Type} :=
+  {
+    Morphism : obj -> obj -> Type;
+
+    Identity : forall x, Morphism x x;
+    Compose : forall s d d', Morphism d d' -> Morphism s d -> Morphism s d';
+    LeftIdentity : forall a b (f : Morphism a b), Compose (Identity b) f = f
+  }.
+
+
+Section DiscreteAdjoints.
+  Let C := {|
+            Morphism := (fun X Y : Type => X -> Y);
+            Identity := (fun X : Type => (fun x : X => x));
+            Compose := (fun _ _ _ f g => (fun x => f (g x)));
+            LeftIdentity := (fun X Y p => @eq_refl _ p : (fun x : X => p x) = p)
+          |}.
+  Variable ObjectFunctor : C = C.
+
+  Goal True.
+  Proof.
+    subst C.
+    revert ObjectFunctor.
+    intro ObjectFunctor.
+    simpl in ObjectFunctor.
+    revert ObjectFunctor. (* Used to failed in 8.4 up to 16 April 2013 *)