XMLPad Crash When Validating Non-Conforming XML Documents

This section describes a failed test of validating a non-conforming XML document with the assigned XML Schema file (XSD), XMLPad Crashed.

In order to see how XMLPad handles multiple validation errors, let's add a new attribute to our invalid XML document, first_html_xsd_invalid.xml and try the validation function again.

1. Run XMLPad and click menu File > Open. Select c:\herong\first_html_xsd_invalid.xml in the "Open" dialog box. XMLPad displays the XML document in the edit window:

<?xml version="1.0" encoding="utf-8"?>
<html xsi:noNamespaceSchemaLocation="file:///C:/herong/first_html.xsd"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<body>
<p>My first HTML document in XML format.</p>
</body>
</html>

2. Add the "bgcolor" attribute inside the "body" element:

<?xml version="1.0" encoding="utf-8"?>
<html xsi:noNamespaceSchemaLocation="file:///C:/herong/first_html.xsd"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<body bgcolor="#eeeeee">
<p>My first HTML document in XML format.</p>
</body>
</html>

3. Click menu XML > Validate. Surprisingly, XMLPad crashed with a Windows system error box: "Access violation at address 00A1C15E in module 'coreobj70.bpl'. Read of address 00000028".

4. Click OK to close the error message box, and save the modified XML document as \xsd\first_html_xsd_invalid_attribute.xml.

This version of XMLPad, "WMHelp XMLPad Version 3.0.1.0 Pro Edition, Build 11/13/2006" seems to has a serious code bug, if the XML document has an invalid XML attribute. Let's hope this bug will be fixed in the next release.

Good news, XMLPad 3.0.2.1 has fixed this bug now. 2 errors are displayed in the output area:
XMLPad - Invalid XML Document with 2 Errors

Last update: 2013.

Table of Contents

 About This Book

 Introduction to XML Schema

XML Editor and Schema Processor - XMLPad

 Installing WMHelp XMLPad Pro

 Creating and Editing XML Documents

 Creating and Editing XML Schema Documents

 Assigning XML Schema to XML Documents

 Validating XML Documents with Assigned XSD

 Validating Non-Conforming XML Documents

XMLPad Crash When Validating Non-Conforming XML Documents

 Generating XML Schema Diagrams

 Generating XML Schema Documentations

 Java API for XML Processing - JAXP

 JAXP - XML Schema (XSD) Validation

 Xerces2 Java Parser - Java API of XML Parsers

 Using Xerces2 Java API

 XML Schema Language - Basics

 Introduction of XSD Built-in Datatypes

 "string" and Its Derived Datatypes

 "decimal" and Its Derived Datatypes

 "dateTime" and Its Related Datatypes

 Miscellaneous Built-in Datatypes

 Facets, Constraining Facets and Restriction Datatypes

 "simpleType" - Defining Your Own Simple Datatypes

 Complex Element Declaration

 Identity-Constraints: unique, key and keyref

 Assertion as Custom Validation Rules

 XML Schema Location and Namespace in XML Documents

 Overriding Element Types in XML Documents

 Linking Multiple Schema Documents Together

 Glossary

 References

 PDF Printing Version