Merge branch 'master' into issue/5846,4597,4027,4112

Conflicts:
	src/library/scala/collection/MapLike.scala
	src/library/scala/collection/SortedMapLike.scala

1 files changed, 28 insertions, 0 deletions

diff --git a/test/files/run/t5284b.scala b/test/files/run/t5284b.scala
new file mode 100644
index 0000000000..a9282a895f
--- /dev/null
+++ b/test/files/run/t5284b.scala
@@ -0,0 +1,28 @@
+
+
+
+
+
+
+/** Here we have a situation where a normalized method parameter `W`
+ *  is used in a position which expects a type `T` - we know we can
+ *  safely cast `W` to `T` whenever typebounds of `W` hold.
+ */
+object Test {
+  def main(args: Array[String]) {
+    val foo = Foo.createUnspecialized[Int]
+    println(foo.bar(17))
+  }
+}
+
+
+object Foo {
+  def createUnspecialized[T] = new Foo[T]
+}
+
+
+class Foo[@specialized(Int) T] {
+  val id: T => T = x => x
+  
+  def bar[@specialized(Int) W <: T, @specialized(Int) S](w: W) = id(w)
+}