[ http://issues.apache.org/jira/browse/XERCESC-1392?page=comments#action_62178 ] Gareth Reakes commented on XERCESC-1392: ----------------------------------------
Hi, we don't use more modern casts for portability reasons. Could you attach the code and xml you use so we can recreate this. If we can verify this I think its a critcal bug. Scanners should work on all platforms. Thanks for your help on this. > Bus Error using XMLUni::fgWFXMLScanner on 64 bit Solaris > -------------------------------------------------------- > > Key: XERCESC-1392 > URL: http://issues.apache.org/jira/browse/XERCESC-1392 > Project: Xerces-C++ > Type: Bug > Components: Non-Validating Parser > Versions: 2.6.0 > Environment: > uname -a > SunOS fu 5.8 Generic_108528-29 sun4u sparc SUNW,Ultra-4 > > CC -V > CC: Sun C++ 5.5 2003/03/12 > Reporter: Fred Dushin > > Readily reproducible bus error using the Well-Formedness XML Scanner > (XMLUni::fgWFXMLScanner) on 64 bit Solaris. This does not appear to occur in > 32 bit mode. Not able to reproduce this error with the other XML scanners. > Used Sun C++ 5.5, and reproduced on Xerces 2.4 and 2.6, as well as with > Forte6 (Update 2). > The Bus Error is as the result on an address alignment error, when any > exception is thrown from a SAX2 handler. The C++ runtime appears to be > peeking up the stack for a frame to catch the exception, when the bus error > occurs. > Below is a patch file for the 2.6 SAX2Count sample program. This patch > modifies the SAXCount driver to use the WF XML scanner, and the handler to > always throw an exception. > Here is a stacktrace, from dbx: > [EMAIL PROTECTED] ([EMAIL PROTECTED]) terminated by signal BUS (invalid > address alignment) > 0xffffffff7e007340: exception_matches : ld [%o1 + 0x28], %o3 > (dbx) where -h > current thread: [EMAIL PROTECTED] > =>[1] __Cimpl::exception_matches(0xffffffff7e3f3920, 0x270022, > 0x8000000000000000, 0x0, 0x9e8, 0x0), at 0xffffffff7e007340 > [2] __Cimpl::locate_handler_frame(0x1, 0x1000041f4, 0x0, > 0xffffffff7ef617b8, 0xffffffff7f167d08, 0xffffffff7e10d580), at > 0xffffffff7e005cf4 > [3] __Crun::ex_throw(0xffffffff7e10d580, 0xffffffff7e3f3920, 0x0, 0x10342c, > 0xffffffff7e24ad68, 0x100107ae0), at 0xffffffff7e005e28 > [4] SAX2CountHandlers::startElement(0xffffffff7fffd698, 0x1, 0x103970, > 0xffffffff7eebd820, 0x0, 0x100107ae0), at 0x1000041e4 > [5] xercesc_2_6::SAX2XMLReaderImpl::startElement(0x1001309a8, 0x100131fc8, > 0x1, 0x10012f950, 0x100004f08, 0x0), at 0xffffffff7ee3328c > [6] xercesc_2_6::WFXMLScanner::scanStartTagNS(0x100137e38, 0x0, 0x0, > 0x100131fc8, 0x0, 0x1), at 0xffffffff7ee9c6a4 > [7] xercesc_2_6::WFXMLScanner::scanContent(0x100137e38, 0x1, 0x1, 0x0, > 0xe7, 0xffffffff7fffcc80), at 0xffffffff7ee9ae1c > [8] xercesc_2_6::WFXMLScanner::scanDocument(0x100137e38, 0x1, 0x0, > 0xffffffff7f15f0e0, 0x0, 0x10010b370), at 0xffffffff7ee99b58 > [9] xercesc_2_6::XMLScanner::scanDocument(0x100137e38, 0xffffffff7ee99ad8, > 0x10010b370, 0x226b70, 0xffffffff7f167e38, 0x10010c718), at 0xffffffff7eebae20 > [10] xercesc_2_6::XMLScanner::scanDocument(0x100137e38, 0xffffffff7fffdb5a, > 0x19, 0x1000038a8, 0x3, 0x100109840), at 0xffffffff7eebb1a4 > [11] xercesc_2_6::SAX2XMLReaderImpl::parse(0x1001309a8, 0x0, 0x1050c5dbaf, > 0xffffffffffffffc0, 0xfffffffffffffff8, 0x1093122440), at 0xffffffff7ee32694 > [12] main(0x102f9fb79c8, 0x3e8, 0xffffffff7fffd180, 0xffffffff7fffd568, > 0xffffffff7fffd698, 0x100107ae0), at 0x1000038a8 > Patch: > diff -r -c SAX2Count.ORIG/SAX2Count.cpp SAX2Count/SAX2Count.cpp > *** SAX2Count.ORIG/SAX2Count.cpp Thu Mar 31 13:29:32 2005 > --- SAX2Count/SAX2Count.cpp Thu Mar 31 13:29:37 2005 > *************** > *** 302,307 **** > --- 302,311 ---- > parser->setFeature(XMLUni::fgXercesSchemaFullChecking, > schemaFullChecking); > parser->setFeature(XMLUni::fgXercesIdentityConstraintChecking, > identityConstraintChecking); > parser->setFeature(XMLUni::fgSAX2CoreNameSpacePrefixes, > namespacePrefixes); > + parser->setProperty( > + XMLUni::fgXercesScannerName, > + const_cast<unsigned short*const>(XMLUni::fgWFXMLScanner) > + ); > > if (valScheme == SAX2XMLReader::Val_Auto) > { > diff -r -c SAX2Count.ORIG/SAX2CountHandlers.cpp > SAX2Count/SAX2CountHandlers.cpp > *** SAX2Count.ORIG/SAX2CountHandlers.cpp Thu Mar 31 13:29:33 2005 > --- SAX2Count/SAX2CountHandlers.cpp Thu Mar 31 13:29:41 2005 > *************** > *** 74,79 **** > --- 74,80 ---- > { > fElementCount++; > fAttrCount += attrs.getLength(); > + throw std::logic_error( "crash me!" ); > } > > void SAX2CountHandlers::characters( const XMLCh* const chars -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - If you want more information on JIRA, or have a bug to report see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
