SI-6935 Added readResolve in BoxedUnit

When deserializing Unit, it would return an instance of Object, but not a Scala Unit.
By adding readResolve, the deserialization of Unit will work.

1 files changed, 14 insertions, 0 deletions

diff --git a/test/files/run/t6935.scala b/test/files/run/t6935.scala
new file mode 100644
index 0000000000..dea2d7f2e2
--- /dev/null
+++ b/test/files/run/t6935.scala
@@ -0,0 +1,14 @@
+object Test {
+
+  def main(args: Array[String]): Unit = {
+		  import java.io._
+		  val bytes = new ByteArrayOutputStream()
+		  val out = new ObjectOutputStream(bytes)
+		  out.writeObject(())
+		  out.close()
+		  val buf = bytes.toByteArray
+		  val in = new ObjectInputStream(new ByteArrayInputStream(buf))
+		  val unit = in.readObject()
+		  assert(unit == ())
+  }
+}