The following comment has been added to this issue:
Author: Jesse Pelton
Created: Tue, 1 Jun 2004 8:01 AM
Body:
So gTranscoder is getting reset or overwritten at some point. Try setting a
breakpoint on the variable (use the "Data" tab on VS.Net's "New Breakpoint" dialog) to
see when it gets changed. I'd probably set a breakpoint in XMLString::initString, let
gTranscoder get initialized, then set the data breakpoint and run until the breakpoint
gets tripped.
This will probably slow execution to a crawl, but it should allow you to get a handle
on the problem, whether it's caused by a reset (that is, a call to
XMLString::termString) or an overwrite.
You might want to set a breakpoint on XMLString::termString() before trying this,
however. It'll run faster, and will tell you whether the global is getting reset
prematurely. This would presumably indicate that you've called
XMLPlatformUtils::Terminate() without subsequently reinitializing. If you're running
multiple threads, you need to synchronize these operations.
For future reference, note that while there is undoubtedly a bug here, it may or may
not be in Xerces. This bug database is intended for Xerces bugs. The mailing list is
a better forum for discussing development problems whose cause is uncertain.
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View this comment:
http://issues.apache.org/jira/browse/XERCESC-1222?page=comments#action_35846
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View the issue:
http://issues.apache.org/jira/browse/XERCESC-1222
Here is an overview of the issue:
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Key: XERCESC-1222
Summary: Null Pointer Exception in XMLString::transcode(const char* const
toTranscode)
Type: Bug
Status: Unassigned
Priority: Critical
Project: Xerces-C++
Components:
Utilities
Versions:
2.5.0
Assignee:
Reporter: Paul Brun
Created: Tue, 1 Jun 2004 5:55 AM
Updated: Tue, 1 Jun 2004 8:01 AM
Environment: Windows XP, Visual Studio.NET (The Xerces C++ library was re-built using
this tool).
Description:
XStr classes that were given in in numerous examples for transcoding strings to their
unicode form, I am constantly receiving a null pointer exception within the XMLString
source code. The call stack points to line 597:
return gTranscoder->transcode(toTranscode);
and the gTranscoder pointer is null. From my understanding, this pointer should have
been filled when calling the XMLPlatformUtils::Initialize method, right? Something is
causing it to become NULL and I have yet to figure out what is causing this situation.
It is presently quasi-reproducible in the sense that it occurs and stops my
application, however, it works for the first 10 calls or so to that function.
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