From e2a875286b8978b94cda8535333cb542759de625 Mon Sep 17 00:00:00 2001
From: Stepan Koltsov <stepan.koltsov@jetbrains.com>
Date: Fri, 18 May 2012 15:03:10 +0400
Subject: [PATCH] ImmutableArrayList.subList: return this if fromIndex = 0 and
 toIndex = length

---
 libraries/stdlib/src/kotlin/ImmutableArrayList.kt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libraries/stdlib/src/kotlin/ImmutableArrayList.kt b/libraries/stdlib/src/kotlin/ImmutableArrayList.kt
index 4cacab1b8f6..b7b9ca7c5b8 100644
--- a/libraries/stdlib/src/kotlin/ImmutableArrayList.kt
+++ b/libraries/stdlib/src/kotlin/ImmutableArrayList.kt
@@ -47,6 +47,9 @@ private class ImmutableArrayList<T>(
         if (toIndex > length) {
             throw IndexOutOfBoundsException("fromIndex ($fromIndex) + toIndex ($toIndex) > length ($length)")
         }
+        if (fromIndex == 0 && toIndex == length) {
+            return this
+        }
         return ImmutableArrayList(array, offset + fromIndex, toIndex - fromIndex)
     }