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, 2 insertions, 0 deletions

diff --git a/src/library/scala/runtime/BoxedUnit.java b/src/library/scala/runtime/BoxedUnit.java
index 035c05d12a..f436b7c209 100644
--- a/src/library/scala/runtime/BoxedUnit.java
+++ b/src/library/scala/runtime/BoxedUnit.java
@@ -17,6 +17,8 @@ public final class BoxedUnit implements java.io.Serializable {
     public final static BoxedUnit UNIT = new BoxedUnit();
 
     public final static Class<Void> TYPE = java.lang.Void.TYPE;
+    
+    private Object readResolve() { return UNIT; }
 
     private BoxedUnit() { }