1 files changed, 68 insertions, 0 deletions
diff --git a/test/files/run/repl-serialization.scala b/test/files/run/repl-serialization.scala
new file mode 100644
index 0000000000..55b7519631
--- /dev/null
+++ b/test/files/run/repl-serialization.scala
@@ -0,0 +1,68 @@
+import java.io._
+
+import scala.reflect.io.AbstractFile
+import scala.tools.nsc.Settings
+import scala.tools.nsc.interpreter.IMain
+import scala.tools.nsc.util._
+import scala.reflect.internal.util.AbstractFileClassLoader
+
+object Test {
+  def main(args: Array[String]) {
+    run()
+  }
+
+  def run(): Unit = {
+    val settings = new Settings()
+    settings.Yreplclassbased.value = true
+    settings.usejavacp.value = true
+
+    var imain: IMain = null
+    object extract extends ((AnyRef) => Unit) with Serializable {
+      var value: AnyRef = null
+
+      def apply(a: AnyRef) = value = a
+    }
+
+    val code =
+      """val x = {println("  evaluating x"); 0 }
+        |def getX() = x
+        |class U extends Serializable { println("constructing U"); val x = 0 ; override def toString = "U" }
+        |lazy val y = {println("  evaluating y"); 0 }
+        |class D; val z = {println("  evaluating z"); 0}; val zz = {println("  evaluating zz"); 0}
+        |object O extends Serializable { val apply = {println("  evaluating O"); 0} }
+        |class A(i: Int) { println("  constructing A") }
+        |type AA = A
+        |val u = new U()
+        |extract(() => new AA(x + getX() + y + z + zz + O.apply + u.x))
+      """.stripMargin
+
+    imain = new IMain(settings)
+    println("== evaluating lines")
+    imain.directBind("extract", "(AnyRef => Unit)", extract)
+    code.lines.foreach(imain.interpret)
+
+    val virtualFile: AbstractFile = extract.value.getClass.getClassLoader.asInstanceOf[AbstractFileClassLoader].root
+    val newLoader = new AbstractFileClassLoader(virtualFile, getClass.getClassLoader)
+
+    def deserializeInNewLoader(string: Array[Byte]): AnyRef = {
+      val bis = new ByteArrayInputStream(string)
+      val in = new ObjectInputStream(bis) {
+        override def resolveClass(desc: ObjectStreamClass) = Class.forName(desc.getName, false, newLoader)
+      }
+      in.readObject()
+    }
+    def serialize(o: AnyRef): Array[Byte] = {
+      val bos = new ByteArrayOutputStream()
+      val out = new ObjectOutputStream(bos)
+      out.writeObject(o)
+      out.close()
+      bos.toByteArray
+    }
+    println("== evaluating lambda")
+    extract.value.asInstanceOf[() => Any].apply()
+    println("== reconstituting into a fresh classloader")
+    val reconstituted = deserializeInNewLoader(serialize(extract.value)).asInstanceOf[() => Any]
+    println("== evaluating reconstituted lambda")
+    reconstituted.apply() // should not print("evaluating x") a second time
+  }
+}