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https://issues.apache.org/jira/browse/MYFACES-2576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12837807#action_12837807
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Jakob Korherr commented on MYFACES-2576:
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How would you be able to get a NullPointerException with the current state of
_ExternalSpecifications? From my point of view the only thing which could
happen is that the properties get configured more than once, which should not
be a problem!
> Race condition in _ExternalSpecifications methods
> -------------------------------------------------
>
> Key: MYFACES-2576
> URL: https://issues.apache.org/jira/browse/MYFACES-2576
> Project: MyFaces Core
> Issue Type: Bug
> Components: JSR-314
> Affects Versions: 2.0.0-beta-2
> Environment: *
> Reporter: Jan-Kees van Andel
>
> The static final fields in the _ExternalSpecifications have recently been
> refactored into methods. But unfortunately, this has broken thread safety,
> possibly leading to strange errors (like NPE).
> I think the only solution with the current implementation is to make the
> methods synchronized. Volatile is not enough AFAICS...
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