Checkng upper bound in *Array classes.

*Array classes will now throw an IndexOutOfBoundsException if a caller
tries to get or set a value for an index that's invalid based on the
current size.

Bug: 118339123
Test: atest CtsUtilTestCases
Change-Id: Iddc9a0c7c89e0ac743b0380049527a1b2dfb434f

1 files changed, 8 insertions, 0 deletions

diff --git a/core/java/android/util/SparseLongArray.java b/core/java/android/util/SparseLongArray.java
index 81db2b7ff715..37a92024f374 100644
--- a/core/java/android/util/SparseLongArray.java
+++ b/core/java/android/util/SparseLongArray.java
@@ -182,6 +182,10 @@ public class SparseLongArray implements Cloneable {
      * key.</p>
      */
     public int keyAt(int index) {
+        if (index >= mSize) {
+            // The array might be slightly bigger than mSize, in which case, indexing won't fail.
+            throw new ArrayIndexOutOfBoundsException(index);
+        }
         return mKeys[index];
     }
 
@@ -197,6 +201,10 @@ public class SparseLongArray implements Cloneable {
      * associated with the largest key.</p>
      */
     public long valueAt(int index) {
+        if (index >= mSize) {
+            // The array might be slightly bigger than mSize, in which case, indexing won't fail.
+            throw new ArrayIndexOutOfBoundsException(index);
+        }
         return mValues[index];
     }