From 97946f9d60d289beee2f980c2b3efe984db23a38 Mon Sep 17 00:00:00 2001
From: Martin Odersky <odersky@gmail.com>
Date: Thu, 30 Aug 2007 16:46:28 +0000
Subject: fixed ticket 17 (unboxing 2d-arrays)

---
 src/library/scala/runtime/BoxedAnyArray.scala | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/library/scala/runtime/BoxedAnyArray.scala b/src/library/scala/runtime/BoxedAnyArray.scala
index a03ed39053..316c085aa1 100644
--- a/src/library/scala/runtime/BoxedAnyArray.scala
+++ b/src/library/scala/runtime/BoxedAnyArray.scala
@@ -154,11 +154,21 @@ final class BoxedAnyArray(val length: Int) extends BoxedArray {
           i += 1
         }
         unboxed = newvalue;
-      } else if (elemClass == boxed.getClass().getComponentType()) {
+      } else if (elemClass == classOf[AnyRef]) {
         // todo: replace with ScalaRunTime.AnyRef.class
         unboxed = boxed
       } else {
         unboxed = Platform.createArray(elemClass, length)
+        if (elemClass.isArray) {
+          var i = 0
+          while (i < length) {
+            boxed(i) match {
+              case ba: BoxedArray => boxed(i) = ba.unbox(elemClass.getComponentType())
+              case _ =>
+            }
+            i += 1
+          }
+        }
         Platform.arraycopy(boxed, 0, unboxed, 0, length)
       }
       boxed = null
-- 
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