From 58e804f07172acc6bb01c8bdafde1217eb4ec4b8 Mon Sep 17 00:00:00 2001
From: Matthieu Sozeau
Date: Thu, 13 Apr 2017 20:41:40 +0200
Subject: Reinstate fixpoint refolding in [cbn], deactivated by mistake.

Add a test-suite file to be sure we won't regress silently.
---
 test-suite/success/cbn.v | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 test-suite/success/cbn.v

(limited to 'test-suite')

diff --git a/test-suite/success/cbn.v b/test-suite/success/cbn.v
new file mode 100644
index 0000000000..6aeb05f54e
--- /dev/null
+++ b/test-suite/success/cbn.v
@@ -0,0 +1,18 @@
+(* cbn is able to refold mutual recursive calls *)
+
+Fixpoint foo (n : nat) :=
+  match n with
+  | 0 => true
+  | S n => g n
+  end
+with g (n : nat) : bool :=
+  match n with
+  | 0 => true
+  | S n => foo n
+  end.
+Goal forall n, foo (S n) = g n.
+  intros. cbn.
+  match goal with
+    |- g _ = g _ => reflexivity
+  end.
+Qed.
\ No newline at end of file
-- 
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