test case for scala/bug#7994

Author: jxnu-liguobin

test/files/jvm/t7994s.check

@@ -0,0 +1,4 @@
+Test$$anon$1
+null
+Test$$anon$1$$anon$2
+null

test/files/jvm/t7994s.scala

@@ -0,0 +1,12 @@
+object Test {
+  def main(args: Array[String]): Unit = {
+    val o = new MyTest() {
+      val i: MyTest = new MyTest() {}
+    }
+  }
+}
+
+class MyTest {
+  println(this.getClass.getName)
+  println(this.getClass.getDeclaringClass)
+}