Fix bug #3291, stack overflow in rewrite.

1 files changed, 9 insertions, 0 deletions

diff --git a/test-suite/bugs/closed/3291.v b/test-suite/bugs/closed/3291.v
new file mode 100644
index 0000000000..4ea748c0fb
--- /dev/null
+++ b/test-suite/bugs/closed/3291.v
@@ -0,0 +1,9 @@
+Require Import Setoid.
+
+Definition segv : forall x, (x = 0%nat) -> (forall (y : nat), (y < x)%nat -> nat) = forall (y : nat), (y < 0)%nat -> nat.
+intros x eq.
+assert (H : forall y, (y < x)%nat = (y < 0)%nat).
+rewrite -> eq. auto.
+Set Typeclasses Debug.
+Fail setoid_rewrite <- H. (* The command has indeed failed with message:
+=> Stack overflow. *)