[DERBY-488] DatabaseMetaData.getColumns() fails on iSeries JDK 1.4 with verfier error on generated class.

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 10.1.1.0
• Fix Version/s: 10.0.2.2, 10.1.2.1, 10.2.1.6
• Component/s: SQL
• Assignee: Katherine Marsden
• Reporter: Daniel John Debrunner
• Created: 04/Aug/05 05:24
• Updated: 30/Sep/05 02:27
• Resolved: 30/Sep/05 02:27

Description

Analysis shows that
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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.
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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.