I'm also on the mailing list if somebody has anything to remark about
this patch.

--emi


On Wed, Apr 26, 2017 at 6:04 PM, emilianbold <[email protected]> wrote:
> GitHub user emilianbold opened a pull request:
>
>     https://github.com/apache/jmeter/pull/293
>
>     Prevent use of the same array in CollectionProperty (close #58743)
>
>     CollectionProperty constructor receives an empty ObjectTableModel.objects
>     collection but normalizeList will return it as-is instead of creating a
>     new empty collection.
>
>     The two classes share the same array but add different kind of classes.
>
>     NOTE: Basically the bug is in AbstractProperty.normalizeList because it 
> should never reuse the same instance. I've done the patch as you see it 
> because it has the lowest impact and does not change the normalizeList API 
> (perhaps reusing is expected in some cases?)
>
>     Let me know if I should redo the patch by just changing normalizeList!
>
>     Constructor stacktrace:
>     at 
> org.apache.jmeter.testelement.property.CollectionProperty.<init>(CollectionProperty.java:40)
>     at 
> org.apache.jmeter.testelement.property.AbstractProperty.makeProperty(AbstractProperty.java:395)
>     at 
> org.apache.jmeter.testelement.property.AbstractProperty.createProperty(AbstractProperty.java:368)
>     at 
> org.apache.jmeter.testbeans.gui.TestBeanGUI.setPropertyInElement(TestBeanGUI.java:277)
>     at 
> org.apache.jmeter.testbeans.gui.TestBeanGUI.modifyTestElement(TestBeanGUI.java:266)
>     at 
> org.apache.jmeter.gui.tree.JMeterTreeModel.addComponent(JMeterTreeModel.java:148)
>     at org.apache.jmeter.gui.action.AddToTree.doAction(AddToTree.java:70)
>     at 
> org.apache.jmeter.gui.action.ActionRouter.performAction(ActionRouter.java:74)
>     at 
> org.apache.jmeter.gui.action.ActionRouter.lambda$actionPerformed$28(ActionRouter.java:59)
>     at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
>
>
> You can merge this pull request into a Git repository by running:
>
>     $ git pull https://github.com/emilianbold/jmeter trunk
>
> Alternatively you can review and apply these changes as the patch at:
>
>     https://github.com/apache/jmeter/pull/293.patch
>
> To close this pull request, make a commit to your master/trunk branch
> with (at least) the following in the commit message:
>
>     This closes #293
>
> ----
> commit 2b829035f144c49e565d99ed0ca8f83ba6f85cf4
> Author: Emilian Bold <[email protected]>
> Date:   2017-04-26T14:57:58Z
>
>     Prevent use of the same array in CollectionProperty (close #58743)
>
>     CollectionProperty constructor receives an empty ObjectTableModel.objects
>     collection but normalizeList will return it as-is instead of creating a
>     new empty collection.
>
>     The two classes share the same array but add different kind of classes.
>
> ----
>
>
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