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From "Dag H. Wanvik (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-3215) Potential NullPointerException in CachedPage class
Date Tue, 22 Jan 2008 00:22:34 GMT

    [ https://issues.apache.org/jira/browse/DERBY-3215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12561177#action_12561177
] 

Dag H. Wanvik commented on DERBY-3215:
--------------------------------------

Merged both patches to 10.3 branch as svn 614068 after running 
regression tests without errors.

> Potential NullPointerException in CachedPage class
> --------------------------------------------------
>
>                 Key: DERBY-3215
>                 URL: https://issues.apache.org/jira/browse/DERBY-3215
>             Project: Derby
>          Issue Type: Bug
>          Components: Store
>    Affects Versions: 10.3.1.4
>         Environment: Windows XP
>            Reporter: Jason Valentine
>            Assignee: Dag H. Wanvik
>            Priority: Minor
>             Fix For: 10.4.0.0
>
>         Attachments: DERBY-3215.diff, DERBY-3215b.diff
>
>
> There's a potential for a NullPointerException to be thrown in the in the org.apache.derby.impl.store.raw.data.CachedPage
class.  In the writePage() method, there's a test of the myContainer reference to ensure it's
not null (line 771), however in the else block, myContainer is dereferenced (line 836), where
a NullPointerException is guaranteed to be thrown.

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