[seam-issues] [JBoss JIRA] Commented: (JBSEAM-4827) FacesMessages may trigger NPE in JSF code

[Marek Novotny (JIRA)]

    [ https://issues.jboss.org/browse/JBSEAM-4827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12614693#comment-12614693 ] 

Marek Novotny commented on JBSEAM-4827:
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Hmm, just thinking why is there possible to produce NULL, this shouldn't be passed away if there is no message in StatusMessage. Have you got a simple test case for that?

Thanks for reporting.

> FacesMessages may trigger NPE in JSF code
> -----------------------------------------
>
>                 Key: JBSEAM-4827
>                 URL: https://issues.jboss.org/browse/JBSEAM-4827
>             Project: Seam 2
>          Issue Type: Bug
>          Components: JSF Integration
>    Affects Versions: 2.2.2.Final
>            Reporter: Stephan Bublava
>
> FacesMessages.beforeRenderResponse() passes the return value of FacesMessages.toFacesMessage() to FacesContext.addMessage() without any checks.
> The problem is that toFacesMessage() may return null and FacesContext.addMessage() does not allow that. (See http://download.oracle.com/docs/cd/E17802_01/j2ee/javaee/javaserverfaces/2.0/docs/api/javax/faces/context/FacesContext.html#addMessage(java.lang.String,%20javax.faces.application.FacesMessage)

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