Hi all,

I have the following problem when I do a simple XPath Query:

when executing the program, it says to me


Debug Assertion Failed!
Program: ...\queryDocument.exe
File: dbgheap.c
Line: 1044

Expression: _CrtIsValidHeapPointer(pUserDate)


This is when the program reaches value.asString() in this (only very
simple) example function:


void doQuery( XmlContainer &container, const string &XPath)
{
XmlResults results( container.queryWithXPath(0, XPath, 0 ));
XmlValue value;
results.next(value);
cout << value.asString() << endl;
}


I'm using MVC++ 6.0

Too, when compiling I get the (here translated) debug warning

....\xmlexception.hpp(23) : warning C4275: class 'exception' is no
DLL-interface and was used as a basis class for the DLL-interface
class 'DbXml::XmlException'.
See declaration of 'exception'

0 errors, 1 warning

Is this warning of particular relevance?

Some suggestions?

mfg

Silk

Silk,

There is a better resource for Berkeley DB XML questions -- the
DB XML mailing list, which is xml (AT) sleepycat (DOT) com. You can sign
up for this list by sending email to xml-subscribe (AT) sleepycat (DOT) com

That said, your problem could be a mismatch of compilation types.
There are 4 modules involved -- your program, BDB XML library, Xerces
library, and Pathan library. All of them should be compiled using
the same debug (or not) settings.

Regards,

George