[XERCESC-1216] GrammarResolver never clears internal cache of Grammar instances

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 2.4.0
• Fix Version/s: 2.5.0
• Component/s: Validating Parser (XML Schema)
• Environment: All platforms
• Assignee: Neil Graham
• Reporter: David N Bertoni
• Created: 19/May/04 19:17
• Updated: 12/Mar/18 02:27
• Resolved: 21/May/04 15:51

Description

I may be misunderstanding how this should work, but GrammarResolver::resetCachedGrammar() clears the associated XMLGrammarPool instance, but does not clears its own cache of pooled grammars, stored in the member variable fGrammarFromPool. The result is a dangling pointer to a Grammar instance that no longer exists. I've applied the following patch to my local copy of Xerces-C, which seems to clear up the problem.

cvs diff GrammarResolver.cpp (in directory V:\xml-xerces\c\src\xercesc\validators\common)
Index: GrammarResolver.cpp
===================================================================
RCS file: /home/cvspublic/xml-xerces/c/src/xercesc/validators/common/GrammarResolver.cpp,v
retrieving revision 1.25
diff -r1.25 GrammarResolver.cpp
403a404
> fGrammarFromPool->removeAll();