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From "Kathey Marsden (JIRA)" <derby-...@db.apache.org>
Subject [jira] Resolved: (DERBY-488) DatabaseMetaData.getColumns() fails on iSeries JDK 1.4 with verfier error on generated class.
Date Fri, 19 Aug 2005 20:51:54 GMT
     [ http://issues.apache.org/jira/browse/DERBY-488?page=all ]
     
Kathey Marsden resolved DERBY-488:
----------------------------------

    Fix Version: 10.0.2.2
     Resolution: Fixed

> DatabaseMetaData.getColumns() fails on iSeries JDK 1.4 with verfier error on generated
class.
> ---------------------------------------------------------------------------------------------
>
>          Key: DERBY-488
>          URL: http://issues.apache.org/jira/browse/DERBY-488
>      Project: Derby
>         Type: Bug
>   Components: SQL
>     Versions: 10.1.1.0
>     Reporter: Daniel John Debrunner
>     Assignee: Deepa Remesh
>      Fix For: 10.0.2.2, 10.2.0.0, 10.1.1.1
>  Attachments: patch488.txt
>
> Analysis shows that 
> ----------------------------------------------------------------------
> The problem is occurring starting at offset 2007 in method e23.  There is an invokeinterface
to method setWidth(int, int, boolean) of class VariableSizeDataValue.  This invoke returns
a value of class DataValueDescriptor.  That value is in turn stored in field e142 at offset
2015 in method e23.  The problem is that field e142 is a NumberDataValue, and DataValueDescriptor
is not a valid subclass of NumberDataValue.  Thus the store is not allowed.
> ----------------------------------------------------------------------
> Looking at the generated setWidth() calls I see one in BinaryOperatorNode where the return
(DataValueDescriptor) is not cast to the type of the field it is stored in. 

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