Applied greenrd's patch to fix bug 2255 (injection failed to

detect indirect dependencies).

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12886 85f007b7-540e-0410-9357-904b9bb8a0f7

1 files changed, 21 insertions, 0 deletions

diff --git a/test-suite/bugs/closed/shouldsucceed/2255.v b/test-suite/bugs/closed/shouldsucceed/2255.v
new file mode 100644
index 000000000..bf80ff660
--- /dev/null
+++ b/test-suite/bugs/closed/shouldsucceed/2255.v
@@ -0,0 +1,21 @@
+(* Check injection in presence of dependencies hidden in applicative terms *)
+
+Inductive TupleT : nat -> Type :=
+  nilT : TupleT 0
+| consT {n} A : (A -> TupleT n) -> TupleT (S n).
+
+Inductive Tuple : forall n, TupleT n -> Type :=
+  nil : Tuple _ nilT
+| cons {n} A (x : A) (F : A -> TupleT n) : Tuple _ (F x) -> Tuple _ (consT A F).
+
+Goal forall n A F x X n0 A0 x0 F0 H0 (H : existT (fun n0 : nat => {H0 : TupleT
+n0 & Tuple n0 H0}) 
+         (S n0)
+         (existT (fun H0 : TupleT (S n0) => Tuple (S n0) H0) 
+            (consT A0 F0) (cons A0 x0 F0 H0)) =
+       existT (fun n0 : nat => {H0 : TupleT n0 & Tuple n0 H0}) 
+         (S n)
+         (existT (fun H0 : TupleT (S n) => Tuple (S n) H0) 
+            (consT A F) (cons A x F X))), False.
+intros.
+injection H.