6 files changed, 55 insertions, 1 deletions
diff --git a/test/files/neg/t6566a.check b/test/files/neg/t6566a.check
new file mode 100644
index 0000000000..7668f9d2fb
--- /dev/null
+++ b/test/files/neg/t6566a.check
@@ -0,0 +1,4 @@
+t6566a.scala:2: error: covariant type T occurs in invariant position in type T of type MyType
+  class TypeCheat[+T] { type MyType = T }
+                             ^
+one error found
diff --git a/test/files/neg/t6566a.scala b/test/files/neg/t6566a.scala
new file mode 100644
index 0000000000..74a0b38e56
--- /dev/null
+++ b/test/files/neg/t6566a.scala
@@ -0,0 +1,17 @@
+object WhatsYourTypeIsMyType {
+  class TypeCheat[+T] { type MyType = T }
+
+  class Foo {
+    val tc = new TypeCheat[Foo]
+    var x: tc.MyType = _
+    def setX() = x = new Foo
+  }
+  class Bar extends Foo {
+    override val tc = new TypeCheat[Bar]
+    def unsound = this
+
+    setX()
+    println(x.unsound)
+  }
+  def main(args: Array[String]): Unit = new Bar
+}
diff --git a/test/files/neg/t6566b.check b/test/files/neg/t6566b.check
new file mode 100644
index 0000000000..fb3fe81fca
--- /dev/null
+++ b/test/files/neg/t6566b.check
@@ -0,0 +1,4 @@
+t6566b.scala:3: error: covariant type T occurs in invariant position in type T of type MyType
+    type MyType = T
+         ^
+one error found
diff --git a/test/files/neg/t6566b.scala b/test/files/neg/t6566b.scala
new file mode 100644
index 0000000000..18ddebf88b
--- /dev/null
+++ b/test/files/neg/t6566b.scala
@@ -0,0 +1,19 @@
+object WhatsYourTypeIsMyType {
+  trait WithMyType[+T] {
+    type MyType = T
+  }
+
+  class Foo extends WithMyType[Foo] {
+    var x: MyType = _
+    def setX() = x = new Foo
+  }
+
+  class Bar extends Foo with WithMyType[Bar] {
+    def unsound { println("iAmABar") }
+
+    setX()
+    println(x.unsound)
+  }
+
+  def main(args: Array[String]): Unit = new Bar
+}
diff --git a/test/files/neg/variances.check b/test/files/neg/variances.check
index 0643e533b7..7d965e94dc 100644
--- a/test/files/neg/variances.check
+++ b/test/files/neg/variances.check
@@ -13,7 +13,10 @@ variances.scala:21: error: covariant type A occurs in invariant position in supe
 variances.scala:74: error: covariant type A occurs in contravariant position in type => test.Covariant.T[A]{val m: A => A} of value x
     val x: T[A] {
         ^
+variances.scala:89: error: covariant type T occurs in invariant position in type T of type A
+    type A = T
+         ^
 variances.scala:90: error: covariant type T occurs in contravariant position in type => test.TestAlias.B[C.this.A] of method foo
     def foo: B[A]
         ^
-6 errors found
+7 errors found
diff --git a/test/files/pos/variances-local.scala b/test/files/pos/variances-local.scala
new file mode 100644
index 0000000000..35e395095c
--- /dev/null
+++ b/test/files/pos/variances-local.scala
@@ -0,0 +1,7 @@
+class Foo1[+T] {
+  private[this] type MyType = T
+}
+
+class Foo2[+T] {
+  protected[this] type MyType = T
+}