Xalan 1.5
Xerces 2.3.0
WinXP
VC6 (so service packs I believe).
I built a DLL and under a debug compile I can run it for extended
periods without problems.
As soon as I build a Release version, it always crashes after 5 or 6
runs.
The DLL was also using an API that my company provides.
So I have tried to narrow down the problem into a simple program that
was copied (initially) from the StreamTransform sample.
Now, when I run this with the following XML and XSL:
char * xml_str = "<?xml version=\"1.0\"?>\
<doc>Hello</doc>";
char * xsl_str = "<?xml version=\"1.0\"?>\
<xsl:stylesheet
xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\"; version=\"1.0\">\
<xsl:template match=\"doc\">\
<out><xsl:value-of select=\".\"/></out>\
</xsl:template>\
</xsl:stylesheet>";
I get the following:
C:\>XalanTransform.exe
xalan_transformGot both input parameters
xalan_transformCreating inputSource
xalan_transformXalanDOMString
xalan_transformx
xalan_transformsetting system id to http://localhost
xalan_transformCreating theXalanTransformer
Assertion failed: manager != 0, file
C:\OpenSrc\xalan\C\xerces-c-src_2_3_0\src\xercesc\util\XMemory.cpp, line
88
Some points to note:
1. I have compiled both Xalan and Xerces on my machine using VC6 no
service packs.
2. I had to recompile Xerces, since I was getting compiler errors when
I tried to build Xalan.
3. This is the FIRST time I am actually getting an assertion, the
behaviour up and to this point was:
try
{
ret = theXalanTransformer.transform(
theXMLStream,
inputSource,
cout
);
}
catch (exception* e)
{
if( e->what() != NULL )
{
cerr << "xalan_transform" << e->what() << endl;
} else {
cerr << "xalan_transform" << "Exception text is
empty" << endl;
}
}
catch(...)
{
error_msg.append("Error: XalanTransformer threw an
exception - ");
error_msg.append(theXalanTransformer.getLastError());
error_msg.append(" - ");
error_msg.append(xsl);
cerr << "xalan_transform" << error_msg.c_str() << endl;
}
I would fall into the catch(...) block and the
theXalanTransformer.getLastError() would always return a blank string
(very unhelpful).
If anyone can provide some guidance I would really appreciate this. I
have been trying to debug the release stuff for a month now (on and off)
without success. My C/C++ skill are novice, but the code is quite
simple.
Here is the cpp and header, this demonstrates the Memory error when
compiled with debug on.
***********************
#ifndef XP_XALANTRANSFORM_H_INCLUDED
#define XP_XALANTRANSFORM_H_INCLUDED
#include <xalanc/XSLT/XSLTInputSource.hpp>
#include <xalanc/XSLT/XSLTResultTarget.hpp>
#include <xercesc/util/PlatformUtils.hpp>
#include <xalanc/XalanTransformer/XalanTransformer.hpp>
#include <string>
#include <iostream>
#include "extfnapi.h"
using namespace std;
int xalan_transform_test( const char *xml, const char *xsl, char *result
);
#endif // XP_XALANTRANSFORM_H_INCLUDED
***********************
***********************
#include "XalanTransform.hpp"
#include "DLL Debug/extXalandll.h"
#include <xercesc/util/PlatformUtils.hpp>
#include <xalanc/XalanTransformer/XalanTransformer.hpp>
#include <string>
#include <iostream>
#include <strstream>
using namespace std;
int
main(
int argc,
const char* argv[])
{
XALAN_USING_STD(cerr);
XALAN_USING_STD(cout);
XALAN_USING_STD(endl);
char* temp_fname = NULL;
int ret = -1;
int msg_level = 0;
char *result = NULL;
char * xml_str = "<?xml version=\"1.0\"?>\
<doc>Hello</doc>";
char * xsl_str = "<?xml version=\"1.0\"?>\
<xsl:stylesheet
xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\"; version=\"1.0\">\
<xsl:template match=\"doc\">\
<out><xsl:value-of select=\".\"/></out>\
</xsl:template>\
</xsl:stylesheet>";
ret = xalan_transform_test( xml_str, xsl_str, result );
if(ret != 0)
{
cerr << "Error: " << endl;
}
if( result != NULL ) {
cout << "Result:\n" << result << endl;
}
return ret;
}
int xalan_transform_test( const char *xml, const char *xsl, char *result
)
/**************************************************/
{
string error_msg;
char *temp_fname = NULL;
int ret = -1;
XALAN_USING_STD(istrstream);
XALAN_USING_STD(ofstream);
XALAN_USING_STD(cerr);
XALAN_USING_STD(cout);
XALAN_USING_STD(endl);
cout << "xalan_transform" << "Got both input parameters" << endl;
istrstream theXMLStream(xml, strlen(xml) );
istrstream theXSLStream(xsl, strlen(xsl) );
try
{
XALAN_USING_XALAN(XalanDOMString);
XALAN_USING_XALAN(XSLTInputSource);
XALAN_USING_XALAN(XalanTransformer);
XALAN_USING_XERCES(XMLPlatformUtils);
cout << "xalan_transform" << "Creating inputSource" << endl;
XSLTInputSource inputSource(&theXSLStream);
cout << "xalan_transform" << "XalanDOMString" << endl;
cout << "xalan_transform" << (char
*)XalanDOMString("xsl").c_str() << endl;
cout << "xalan_transform" << "setting system id to
http://localhost"; << endl;
//inputSource.setSystemId(XalanDOMString("xsl").c_str());
//inputSource.setSystemId(XalanDOMString("http://localhost";).c_str());
{
cout << "xalan_transform" << "Creating theXalanTransformer"
<< endl;
// Create a XalanTransformer.
XalanTransformer theXalanTransformer;
try
{
ret = theXalanTransformer.transform(
theXMLStream,
inputSource,
cout
//temp_fname
//theResultStream
);
cout << "xalan_transform - ret = " << ret << endl;
if(ret != 0)
{
char ret_str[10];
sprintf( ret_str, "%ld", ret );
error_msg.append("Error: ret = ");
error_msg.append(ret_str);
error_msg.append(" - ");
error_msg.append(theXalanTransformer.getLastError());
error_msg.append(" - ");
error_msg.append(xsl);
strcpy( result, error_msg.c_str() );
cerr << "xalan_transform" << result << endl;
}
if(ret == 0)
{
error_msg.append("Temporary file name: ");
error_msg.append(temp_fname);
cout << "xalan_transform" << error_msg.c_str() <<
endl;
strcpy( result, error_msg.c_str() );
}
}
catch (exception* e)
{
if( e->what() != NULL )
{
cerr << "xalan_transform" << e->what() << endl;
} else {
cerr << "xalan_transform" << "Exception text is
empty" << endl;
}
}
catch(...)
{
error_msg.append("Error: XalanTransformer threw an
exception - ");
error_msg.append(theXalanTransformer.getLastError());
error_msg.append(" - ");
error_msg.append(xsl);
cerr << "xalan_transform" << error_msg.c_str() << endl;
}
}
}
catch(...)
{
//cerr << "An unknown error occurred!" << endl;
result = NULL;
cerr << "xalan_transform - Error setting Xalan Input Source" <<
endl;
}
if( result != NULL )
{
cout << "xalan_transform - Returning" << endl;
} else {
cout << "xalan_transform - Returning NULL" << endl;
}
return ret;
}
***********************
--
David Fishburn
Solutions Architect
Certified Sybase ASA Developer Version 8
iAnywhere Solutions - Sybase
