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https://issues.apache.org/jira/browse/MYFACES-3944?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14223449#comment-14223449
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Leonardo Uribe commented on MYFACES-3944:
-----------------------------------------
On the review it was found that in UserTagHandler there is a missing call to
fcc.endComponentUniqueIdSection(); . That means all custom facelet tags will
have the problem, but it will only be found when you use nested combinations of
custom facelet tags and c:forEach tags.
So this issue should be classified as a bug.
> Calls to fcc.startComponentUniqueIdSection(...) and
> fcc.endComponentUniqueIdSection(...) should be surrounded in a try finally
> block
> ------------------------------------------------------------------------------------------------------------------------------------
>
> Key: MYFACES-3944
> URL: https://issues.apache.org/jira/browse/MYFACES-3944
> Project: MyFaces Core
> Issue Type: Bug
> Components: JSR-344
> Affects Versions: 2.2.6
> Reporter: Leonardo Uribe
> Assignee: Leonardo Uribe
> Priority: Critical
>
> In some situations where an exception could be raised inside a component like
> c:forEach, and on the same time fcc.startComponentUniqueIdSection(...) and
> fcc.endComponentUniqueIdSection(...) are used, the section is not closed,
> affecting theoretically the ids generated.
> The probability of something like this is very low, but as a good practice it
> would be better to ensure fcc.startComponentUniqueIdSection(...) and
> fcc.endComponentUniqueIdSection(...) are called inside a try{...} finally
> block.
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