[ http://issues.apache.org/jira/browse/LANG-69?page=all ]
Gary Gregory updated LANG-69:
-----------------------------
Comment: was deleted
> [lang] ToStringBuilder throws StackOverflowError when an Object cycle exists
> ----------------------------------------------------------------------------
>
> Key: LANG-69
> URL: http://issues.apache.org/jira/browse/LANG-69
> Project: Commons Lang
> Issue Type: Bug
> Affects Versions: 2.1
> Environment: Operating System: other
> Platform: Other
> Reporter: Maarten Coene
> Assigned To: Gary Gregory
> Fix For: 2.3
>
> Attachments: 15938.patch, 36061.patch,
> ReflectionToStringBuilder.java.patch, ToStringBuilderTest.java.patch,
> ToStringStyle.java.patch
>
>
> Hi,
> The ToStringBuilder throws a StackOverflowError if you have a cycle in the
> object graph. For instance, the following toString() method will cause a
> StackOverflowError:
> public class ObjectCycle {
> Object obj;
>
> public String toString() {
> return new ToStringBuilder(this).append(obj).toString();
> }
> }
> public void testObjectCycle() {
> ObjectCycle a = new ObjectCycle();
> ObjectCycle b = new ObjectCycle();
> a.obj = b;
> b.obj = a;
> a.toString(); // ouch: StackOverflowError
> }
> I'll submit some patches that fixes this problem...
> regards,
> Maarten
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