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From "Dag H. Wanvik (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-3215) Potential NullPointerException in CachedPage class
Date Wed, 21 Nov 2007 15:34:43 GMT

     [ https://issues.apache.org/jira/browse/DERBY-3215?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Dag H. Wanvik updated DERBY-3215:

    Attachment: DERBY-3215b.diff

DERBY-3215b changes to code to test for empty myContainer up front
as suggested, plus removes some unused imports. Regression tests
passed. Will commit shortly.

> 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:
>         Environment: Windows XP
>            Reporter: Jason Valentine
>            Assignee: Dag H. Wanvik
>            Priority: Minor
>             Fix For:
>         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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