1 files changed, 16 insertions, 0 deletions
diff --git a/contrib/subtac/test/Test1.v b/contrib/subtac/test/Test1.v
new file mode 100644
index 00000000..14b80854
--- /dev/null
+++ b/contrib/subtac/test/Test1.v
@@ -0,0 +1,16 @@
+Program Definition test (a b : nat) : { x : nat | x = a + b } := 
+  ((a + b) : { x : nat | x = a + b }).
+Proof.
+intros.
+reflexivity.
+Qed.
+
+Print test.
+
+Require Import List.
+
+Program hd_opt (l : list nat) : { x : nat | x <> 0 } :=
+  match l with
+    nil => 1
+    | a :: l => a
+  end.