Closing soundness hole in variance checking.

See SI-5060.  Review by odersky.

1 files changed, 19 insertions, 0 deletions

diff --git a/test/files/neg/t5060.scala b/test/files/neg/t5060.scala
new file mode 100644
index 0000000000..4d934a9a16
--- /dev/null
+++ b/test/files/neg/t5060.scala
@@ -0,0 +1,19 @@
+class A[+T] {
+  val foo0 = {
+    class AsVariantAsIWantToBe { def contains(x: T) = () }
+    new AsVariantAsIWantToBe
+  }
+  def foo1 = {
+    class VarianceIsTheSpiceOfTypes { def contains(x: T) = () }
+    new VarianceIsTheSpiceOfTypes
+  }
+}
+
+object Test {
+  def main(args: Array[String]): Unit = {
+    val xs: A[String] = new A[String]
+    println(xs.foo0 contains "abc")
+    println((xs: A[Any]).foo0 contains 5)
+    // java.lang.NoSuchMethodException: A$AsVariantAsIWantToBe$1.contains(java.lang.String)
+  }
+}