From 12d89ea0b96710f27737639889379bf97a1a8a07 Mon Sep 17 00:00:00 2001
From: Leonardo de Moura <leonardo@microsoft.com>
Date: Wed, 9 Jul 2014 20:41:41 -0700
Subject: [PATCH] fix(kernel/level): is_geq predicate

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
---
 src/kernel/level.cpp     |  4 ++--
 tests/lean/run/coe2.lean | 20 ++++++++++++++++++++
 2 files changed, 22 insertions(+), 2 deletions(-)
 create mode 100644 tests/lean/run/coe2.lean

diff --git a/src/kernel/level.cpp b/src/kernel/level.cpp
index 7e6526a8b..4a9ed4d26 100644
--- a/src/kernel/level.cpp
+++ b/src/kernel/level.cpp
@@ -673,10 +673,10 @@ bool is_geq_core(level l1, level l2) {
         return true;
     if (is_max(l2))
         return is_geq(l1, max_lhs(l2)) && is_geq(l1, max_rhs(l2));
+    if (is_max(l1) && (is_geq(max_lhs(l1), l2) || is_geq(max_rhs(l1), l2)))
+        return true;
     if (is_imax(l2))
         return is_geq(l1, imax_lhs(l2)) && is_geq(l1, imax_rhs(l2));
-    if (is_max(l1))
-        return is_geq(max_lhs(l1), l2) || is_geq(max_rhs(l1), l2);
     if (is_imax(l1))
         return is_geq(imax_rhs(l1), l2);
     auto p1 = to_offset(l1);
diff --git a/tests/lean/run/coe2.lean b/tests/lean/run/coe2.lean
new file mode 100644
index 000000000..9a7ddc9eb
--- /dev/null
+++ b/tests/lean/run/coe2.lean
@@ -0,0 +1,20 @@
+import standard
+
+namespace setoid
+  inductive setoid : Type :=
+  | mk_setoid: Π (A : Type), (A → A → Bool) → setoid
+
+  definition carrier (s : setoid)
+  := setoid_rec (λ a eq, a) s
+
+  definition eqv {s : setoid} : carrier s → carrier s → Bool
+  := setoid_rec (λ a eqv, eqv) s
+
+  infix `≈`:50 := eqv
+
+  coercion carrier
+
+  inductive morphism (s1 s2 : setoid) : Type :=
+  | mk_morphism : Π (f : s1 → s2), (∀ x y, x ≈ y → f x ≈ f y) → morphism s1 s2
+
+end
\ No newline at end of file