[weld-issues] [JBoss JIRA] Commented: (WELD-531) Weld swallowing stacktrace in the case of multiple container errors

Dan Allen (JIRA) jira-events at lists.jboss.org
Tue Jun 8 10:17:38 EDT 2010

    [ https://jira.jboss.org/browse/WELD-531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12534482#action_12534482 ] 

Dan Allen commented on WELD-531:

Not even that extravagant really. I'm just trying to work out when it was solved so that we can communicate it. This issue is not linked to another that has code references. It just says out of date, but in what version is it fixed?

> Weld swallowing stacktrace in the case of multiple container errors
> -------------------------------------------------------------------
>                 Key: WELD-531
>                 URL: https://jira.jboss.org/browse/WELD-531
>             Project: Weld
>          Issue Type: Bug
>    Affects Versions: 1.0.1.Final
>            Reporter: Dan Allen
>            Assignee: Pete Muir
>            Priority: Blocker
> When there are multiple container errors (for instance, definition errors at startup), Weld cycles through the errors and builds a localized message. However, it drops the cause of the exception. If the message is further up the chain (i.e., in the exception cause), this leads to exceptions such as:
> Exception #0: null
> The user is lost as to what the real problem is. Typically root causes are:
> - NoClassDefFoundError
> - NullPointerException
> The problem is not that the message is null. The problem is that the underlying cause is dropped.
> This came up recently when using Arquillian as reported in this forum post: https://community.jboss.org/message/544395#544395
> When placed in a debugger, it turned out that a NoClassDefFoundError was being thrown. There was no way for the user to trace that to the source.
> I think that what Weld needs to do is follow the cause until it finds a non-null message.

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