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From "Bryan Pendleton (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-2935) DDMReader.readLengthAndCodePoint() decodes long integer incorrectly
Date Sat, 14 Jul 2007 15:42:04 GMT

    [ https://issues.apache.org/jira/browse/DERBY-2935?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12512720
] 

Bryan Pendleton commented on DERBY-2935:
----------------------------------------

Is it possible to write a new regression test, with some Long values which 
require 6 and/or 8 bytes to encode, which demonstrates the bug and the fix?

> DDMReader.readLengthAndCodePoint() decodes long integer incorrectly
> -------------------------------------------------------------------
>
>                 Key: DERBY-2935
>                 URL: https://issues.apache.org/jira/browse/DERBY-2935
>             Project: Derby
>          Issue Type: Bug
>          Components: Network Server
>    Affects Versions: 10.1.3.1, 10.2.2.0, 10.3.1.1, 10.4.0.0
>            Reporter: Knut Anders Hatlen
>            Assignee: Knut Anders Hatlen
>            Priority: Minor
>         Attachments: decode-long.diff
>
>
> DDMReader.readLengthAndCodePoint() contains code to decode a long integer from a byte
array. This code is broken since it uses int operations and not long operations in the decoding.
The long might be encoded using four, six or eight bytes, and since Derby currently always
uses the four bytes encoding, the bug is not exposed in the current code.

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