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https://issues.apache.org/jira/browse/FLEX-34226?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gareth Daniel Smith updated FLEX-34226:
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Attachment: empty-list-in-form-bug.zip
Test case that exposes the bug.
> TypeError when using a spark List with an empty dataProvider within an mx Form
> ------------------------------------------------------------------------------
>
> Key: FLEX-34226
> URL: https://issues.apache.org/jira/browse/FLEX-34226
> Project: Apache Flex
> Issue Type: Bug
> Components: Spark: List
> Affects Versions: Apache Flex 4.11.0
> Environment: OS X
> Reporter: Gareth Daniel Smith
> Priority: Minor
> Attachments: empty-list-in-form-bug.zip
>
>
> I will attach an example that throws a TypeError because the item renderer is
> passed an object that is not an instance of Point.
> I suspect the dodgy code is here:
> https://github.com/apache/flex-sdk/blob/323882d8a2619046e3833ae5e7033e7d9a70b4a1/frameworks/projects/spark/src/spark/components/supportClasses/ListBase.as#L311
> Note that the mx List uses null instead of {} for the dummy element:
> https://github.com/apache/flex-sdk/blob/323882d8a2619046e3833ae5e7033e7d9a70b4a1/frameworks/projects/mx/src/mx/controls/listClasses/ListBase.as#L1475
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