loadGrammar is releasing a DOMBuilder previously parsed document when it
shouldn't
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Key: XERCESC-1626
URL: http://issues.apache.org/jira/browse/XERCESC-1626
Project: Xerces-C++
Issue Type: Bug
Components: DOM, Validating Parser (Schema) (Xerces 1.5 or up only)
Affects Versions: 2.7.0
Environment: Windows XP Pro 32bit,
Xerces-2.7.0,
Visual C++ 6.0 sp5
Reporter: Ori D.
I'm parsing xml file using Xerces-c 2.7 DOM.
After loading a schema grammar to the parser, my previously parsed xml document
is released (and therefore further access to the document in the code causes
segmentation fault)
I do the following things (more or less):
1. create a XMLGrammarPoolImpl object and then create a new
DOMBuilder using it as an input.
m_grammarPool = new XMLGrammarPoolImpl(XMLPlatformUtils::fgMemoryManager);
const XMLCh gLS[] = { chLatin_L, chLatin_S, chNull };
m_DomImpl = DOMImplementationRegistry::getDOMImplementation(gLS);
m_DomParser =
((DOMImplementationLS*)m_DomImpl)->createDOMBuilder(DOMImplementationLS::MODE_SYNCHRONOUS,
0, XMLPlatformUtils::fgMemoryManager, m_grammarPool);
m_DomParser->setFeature(XMLUni::fgDOMNamespaces, true);
m_DomParser->setFeature(XMLUni::fgXercesSchema, true);
m_DomParser->setFeature(XMLUni::fgXercesSchemaFullChecking, true);
m_DomParser->setFeature(XMLUni::fgDOMValidateIfSchema, true);
m_DomParser->setFeature(XMLUni::fgDOMDatatypeNormalization, true);
2. Parse an xml file using the DOMBuilder and keep a reference to
the DOMDocument, 'doc'
doc = m_DomParser->parse(inputSource);
3. Create a new DOMInputSource and call DOMBuilder
->loadGrammar(inputSrc, SchemaGrammarType, true)
SchemaGrammar *pGrammar = (SchemaGrammar*)
m_DomParser->loadGrammar(schemaInputSource, Grammar::SchemaGrammarType, true);
The result is that my previous parsed document, 'doc' is being released by the
following code in parsers\DOMBuilderImpl.cpp on DOMBuilderImpl::loadGrammar
(line 703):
// Release DOM tree - DTD
DOMDocument* doc = adoptDocument();
if (doc)
doc->release();
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