[XERCESC-1524] Xerces fails to validate a valid XML document when the schema contains "forward references" to element-types in certain circumstances.

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.7.0
• Fix Version/s: 2.8.0
• Component/s: Validating Parser (XML Schema)
• Environment: msvc6 / win2k
• Assignee: Unassigned
• Reporter: Alain Le Guennec
• Created: 11/Nov/05 01:57
• Updated: 19/Feb/08 15:44
• Resolved: 19/Feb/08 15:44

Description

When running "sax2print BugValidationSchema.xml" (xml file attached), I get the following error:
Message: Attribute 'attr2' is not declared for element 'Level4'

The schema (also attached) simply contains 4 element/element-types declarations
('Level1', 'Level2', 'Level3' and 'Level4', forming an extension chain).
Attribute 'attr2' is declared within 'Level2', and so should be legal within Level4 too.
'Level2' also contains a sub-element declaration of type 'Level4'.
It turns out that commenting out that sub-element declaration renders the xml file valid.