From 6c4064a77086ee82de861ec30dfd87fe120c6b0d Mon Sep 17 00:00:00 2001
From: Martin Odersky <odersky@gmail.com>
Date: Fri, 13 Nov 2009 17:31:12 +0000
Subject: Fixes #1477 by requiring that abstract types wi...

Fixes #1477 by requiring that abstract types with non-volatile upper
bounds cannot be overridden by volatile types.
---
 test/files/neg/t1477.scala | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 test/files/neg/t1477.scala

(limited to 'test/files/neg/t1477.scala')

diff --git a/test/files/neg/t1477.scala b/test/files/neg/t1477.scala
new file mode 100644
index 0000000000..0cc0cd5f7a
--- /dev/null
+++ b/test/files/neg/t1477.scala
@@ -0,0 +1,25 @@
+object Test extends Application {
+ trait A
+ trait B extends A
+
+  trait C {
+    type U
+    trait D { type T >: B <: A }
+    type V <: D
+    val y: V#T = new B { }
+  }
+
+  trait Middle extends C {
+    type V <: (D with U)
+  }
+
+  class D extends Middle {
+    trait E
+    trait F { type T = E }
+    type U = F
+    def frob(arg : E) : E = arg
+    frob(y)
+  }
+
+  new D
+}
-- 
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