[PIVOT-515] org.apache.pivot.collections.ArrayList bounds checking issue

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.5
• Fix Version/s: 1.5.1
• Component/s: core-collections
• Labels: arraylist collections pivot
• Environment: Java(TM) SE Runtime Environment (build 1.6.0_19-b04) MS Windows XP x64 SP2
• Assignee: Noel Grandin
• Reporter: Christopher James Bartlett
• Created: 03/Jun/10 21:01
• Updated: 05/Jun/10 12:44
• Resolved: 04/Jun/10 07:07

Description

Bounds checking on ArrayList fails under certain circumstances.
Appears to happen when add() and/or insert() methods of ArrayList are used, and not when data is passed to a constructor

jUnit test demonstrating the issue will be attached in a follow up post.

public void simpleTest() {
org.apache.pivot.collections.List<String> pivot1 = new org.apache.pivot.collections.ArrayList<String>("A", "B", "C");
// Throws java.lang.IndexOutOfBoundsException
pivot1.get(3);

org.apache.pivot.collections.List<String> pivot2 = new org.apache.pivot.collections.ArrayList<String>();
// Returns null
System.out.println(pivot2.get(0));
pivot2.add("A");
pivot2.add("B");
pivot2.add("C");
// Returns null
System.out.println(pivot2.get(3));

java.util.List<String> java = new java.util.ArrayList<String>();
// Throws java.lang.IndexOutOfBoundsException
java.get(0);
java.add("A");
java.add("B");
java.add("C");
// Throws java.lang.IndexOutOfBoundsException
java.get(3);
}