1 files changed, 81 insertions, 0 deletions
diff --git a/test/files/jvm/t8582.scala b/test/files/jvm/t8582.scala
new file mode 100644
index 0000000000..8a57ef7952
--- /dev/null
+++ b/test/files/jvm/t8582.scala
@@ -0,0 +1,81 @@
+import scala.tools.partest.BytecodeTest
+import scala.collection.JavaConverters._
+
+package p1 {
+  package p2 {
+    object Singleton {
+      object Singleton {
+        object Singleton
+      }
+    }
+  }
+}
+
+class A1 {
+  class B1 {
+    @scala.beans.BeanInfo
+    class C1
+  }
+}
+
+class A2 {
+  class B2 {
+    class C2
+  }
+  def f: B2#C2 = null
+}
+
+
+object Test extends BytecodeTest {
+  import p1.p2._
+
+  def nested(c: Class[_]) = s" ${c.getName}: ${c.getDeclaredClasses.toList}"
+
+  def nprintln(s: String) = println("\n"+s)
+  def printInner(cname: String): Unit = {
+    val cnode = loadClassNode(cname)
+    println(cnode.innerClasses.asScala.toList.map(i => s"className[${i.name}] outerClassName[${i.outerName}] innerName[${i.innerName}] access[${i.access}]").mkString(" ", "\n ", ""))
+  }
+
+  def show() {
+
+    println("getClass on module gives module class")
+    println(" " + Singleton.Singleton.getClass)
+
+    nprintln("Nested module classes are found through reflection")
+    println(nested(Singleton.Singleton.getClass))
+
+    nprintln("Reflection can find direct nested classes (A1-B1-C1)")
+    println(nested(classOf[A1]))
+    println(nested(classOf[A1#B1]))
+    println(nested(classOf[A1#B1#C1]))
+
+    nprintln("Reflection can find direct nested classes (A2-B2-C2)")
+    println(nested(classOf[A2]))
+    println(nested(classOf[A2#B2]))
+    println(nested(classOf[A2#B2#C2]))
+
+    nprintln("Mirror classes have the same InnerClass attributes as the corresponding module class:")
+    printInner("p1.p2.Singleton") // mirror class
+    println("Module class")
+    printInner("p1.p2.Singleton$")
+
+    nprintln("An outer class has a InnerClass attribute for direct nested classes")
+    printInner("A1")
+    println("A nested class has an InnerClass attribute for itself (and also for its nested classes)")
+    printInner("A1$B1")
+    println("C1 is a nested class, so it has an InnerClass attribute for itself.\n"+
+            "Because that attribute leads to an entry for B1 in the constant pool, C1 needs an InnerClass attribute for B1.")
+    printInner("A1$B1$C1")
+
+    nprintln("The BeanInfo class has the same InnerClass attributes as the corresponding bean")
+    printInner("A1$B1$C1BeanInfo")
+
+    nprintln("Class A2 mentions class C2 in the constant pool (due to method  f), therefore it needs an InnerClass attribute for C1")
+    printInner("A2")
+    println("B2")
+    printInner("A2$B2")
+    println("C2")
+    printInner("A2$B2$C2")
+  }
+}