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From "Urban Widmark (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-4088) DDMReader readBytes ArrayIndexOutOfBoundsException
Date Tue, 10 Mar 2009 10:34:50 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4088?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Urban Widmark updated DERBY-4088:

    Attachment: derby-ddm.patch

Attached patch changes the if-statement to include buffer position. I have only tested this
with my own database and the 32766 byte BLOB where it seems to work fine.

> DDMReader readBytes ArrayIndexOutOfBoundsException
> --------------------------------------------------
>                 Key: DERBY-4088
>                 URL: https://issues.apache.org/jira/browse/DERBY-4088
>             Project: Derby
>          Issue Type: Bug
>          Components: Network Server
>    Affects Versions:
>         Environment: CentOS 5, java 1.6.0_11
>            Reporter: Urban Widmark
>         Attachments: derby-ddm.patch
> DDMReader.readBytes(int length) checks the length vs DssConstants.MAX_DSS_LENGTH, but
ignores the fact that the buffer position "pos" might not be 0. If pos is non-zero then the
pos + length can be larger than the size of "buffer" causing an ArrayIndexOutOfBoundsException.
> For me this happened when sending a BLOB that was 32766 bytes long. The value of pos
was 2 in that method.

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