[ http://issues.apache.org/jira/browse/XERCESC-1486?page=comments#action_12320601 ]
David Bertoni commented on XERCESC-1486: ---------------------------------------- I suggest you build a version of Xerces-C with some logging the XMLException constructor and destructor to ensure that it is called and that the pointer is freed. If it is, you will know that it's a problem with the memory leak detection tools. If it's not, you'll know it a problem with the compiler, and you can report it to HP. It's often difficult for the Xerces-C committers to diagnose platform-specific problems, because none of us has access to every possible platform. > Memory leak in error cases > -------------------------- > > Key: XERCESC-1486 > URL: http://issues.apache.org/jira/browse/XERCESC-1486 > Project: Xerces-C++ > Type: Bug > Components: SAX/SAX2 > Versions: 2.6.0 > Environment: HP-UX B.11.11 U 9000/800 > aCC: HP ANSI C++ B3910B A.03.57 > Reporter: Stephan Irrgang > > Hi, > I found a memory leak using the SAX Parser in error cases like file not > found or unexcepted end of file. I first detected it with Xerces C++ release > 2.3, and then verified that it's still in contained in the latest release > (2.6). Here's the source code I used to test this issue; in this example the > XML file to parse is not existing. > #include <xercesc/sax/HandlerBase.hpp> > #include <xercesc/sax/AttributeList.hpp> > #include <xercesc/parsers/SAXParser.hpp> > #include <iostream.h> > using namespace XERCES_CPP_NAMESPACE; > class myCallbackHandler_c : public HandlerBase > { > public: > void fatalError (const SAXParseException& exception) > { > char chBuffer[256]; > XMLString::transcode(exception.getMessage(), chBuffer, 255); > throw chBuffer; > } > }; > int main() > { > int returnValue = 0; > XMLPlatformUtils::Initialize(); > SAXParser *saxParserPtr = new SAXParser; > myCallbackHandler_c *callbackHandlerPtr = new myCallbackHandler_c; > saxParserPtr->setErrorHandler(callbackHandlerPtr); > > try > { > saxParserPtr->parse("FileNotFound.xml"); > } > catch (const char* s) > { > cerr << s << endl; > returnValue = 1; > } > catch (...) > { > cerr << "Unknown exception!" << endl; > returnValue = 1; > } > > delete callbackHandlerPtr; > delete saxParserPtr; > XMLPlatformUtils::Terminate(); > cout << "Returning: " << returnValue << endl; > return returnValue; > } > When running it with Rational Purify it shows following memory leaks (BTW, > the same leaks are shown when using HP WDB's memory check functionality). > MLK: 186 bytes leaked at 0x400bbd08 > This memory was allocated from: > malloc [rtlib.o] > __nW__fUl [libCsup.2] > operator new(unsigned long) [rtlib.o] > xercesc_2_6::MemoryManagerImpl::allocate(unsigned long) > [libxerces-c.sl.26.0] > xercesc_2_6::XMLException::XMLException(const > xercesc_2_6::XMLException &)%2 [libxerces-c.sl.26.0] > xercesc_2_6::IGXMLScanner::scanReset(const > xercesc_2_6::InputSource &) [libxerces-c.sl.26.0] > xercesc_2_6::IGXMLScanner::scanDocument(const > xercesc_2_6::InputSource &) [libxerces-c.sl.26.0] > xercesc_2_6::XMLScanner::scanDocument(const unsigned short *) > [libxerces-c.sl.26.0] > xercesc_2_6::XMLScanner::scanDocument(const char *) > [libxerces-c.sl.26.0] > xercesc_2_6::SAXParser::parse(const char *) > [libxerces-c.sl.26.0] > main [xerces_mlk.cc:29] > _start [libc.2] > $START$ [crt0.o] > $START$ [crt0.o] > MLK: 18 bytes leaked at 0x400a7b18 > This memory was allocated from: > malloc [rtlib.o] > __nW__fUl [libCsup.2] > operator new(unsigned long) [rtlib.o] > xercesc_2_6::MemoryManagerImpl::allocate(unsigned long) > [libxerces-c.sl.26.0] > static xercesc_2_6::XMLString::replicate(const char > *,xercesc_2_6::MemoryManager *) [libxerces-c.sl.26.0] > xercesc_2_6::XMLException::XMLException(const > xercesc_2_6::XMLException &)%2 [libxerces-c.sl.26.0] > xercesc_2_6::IGXMLScanner::scanReset(const > xercesc_2_6::InputSource &) [libxerces-c.sl.26.0] > xercesc_2_6::IGXMLScanner::scanDocument(const > xercesc_2_6::InputSource &) [libxerces-c.sl.26.0] > xercesc_2_6::XMLScanner::scanDocument(const unsigned short *) > [libxerces-c.sl.26.0] > xercesc_2_6::XMLScanner::scanDocument(const char *) > [libxerces-c.sl.26.0] > xercesc_2_6::SAXParser::parse(const char *) > [libxerces-c.sl.26.0] > main [xerces_mlk.cc:29] > _start [libc.2] > $START$ [crt0.o] > $START$ [crt0.o] > To me it seems the XMLException object is not released in case an exception > is thrown in an error handler's fatalError method. Any ideas? Thanks in > advance! > Regards, > Stephan -- 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 - For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
