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From "Alexei Zakharov (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HARMONY-2527) [classlib][awt]Component.paint method should check if passed parameter in null
Date Mon, 29 Jan 2007 13:41:49 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-2527?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Alexei Zakharov resolved HARMONY-2527.
--------------------------------------

    Resolution: Fixed

Thanks. The patch was committed at the revision 501046. Please verify that it was applied
as expected. 

> [classlib][awt]Component.paint method should check if passed parameter in null
> ------------------------------------------------------------------------------
>
>                 Key: HARMONY-2527
>                 URL: https://issues.apache.org/jira/browse/HARMONY-2527
>             Project: Harmony
>          Issue Type: Bug
>          Components: Classlib
>            Reporter: Nikolay Kuznetsov
>         Assigned To: Alexei Zakharov
>            Priority: Minor
>         Attachments: Container1.patch, ContainerRTest1.patch
>
>
> RI implementations of paint methods checks if passed Graphics parameter is null. I've
found several bugs[1] in Sun's database indicating activity on adding check to paint methods.
In most of the real cases null value was passed because the component was clipped or invisible(and
it seems to be OK).
> [1] http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4036712
>      http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4191142
> Attached test passes on RI and throws NPE on harmony implementation.
> RI
> java test
> true
> true
> true
> true
> true
> true
> Harmony:
> false
> java.lang.NullPointerException
>         at java.awt.Container.paintComponentsImpl(Container.java)
>         at java.awt.Container.paint(Container.java:930)
>         at test.testPaint(test.java:58)
>         at test.main(test.java:119)
> false
> java.lang.NullPointerException
>         at java.awt.Container.paintComponentsImpl(Container.java)
>         at java.awt.Container.paintComponents(Container.java:977)
>         at test.testPaintComponents(test.java:70)
>         at test.main(test.java:122)
> false
> java.lang.NullPointerException
>         at java.awt.Container.paintComponentsImpl(Container.java)
>         at java.awt.Container.paint(Container.java:930)
>         at java.awt.Container.print(Container.java:318)
>         at test.testPrint(test.java:82)
>         at test.main(test.java:123)
> false
> java.lang.NullPointerException
>         at java.awt.Container.paintComponentsImpl(Container.java)
>         at java.awt.Container.paintComponents(Container.java:977)
>         at java.awt.Container.printComponents(Container.java:968)
>         at test.testPrintComponents(test.java:94)
>         at test.main(test.java:124)
> false
> java.lang.NullPointerException
>         at java.awt.Container.paintComponentsImpl(Container.java)
>         at java.awt.Container.paint(Container.java:930)
>         at java.awt.Component.update(Component.java:3447)
>         at java.awt.Container.update(Container.java:339)
>         at test.testUpdate(test.java:106)
>         at test.main(test.java:125)
> false

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