http://bugzilla.novell.com/show_bug.cgi?id=629714
http://bugzilla.novell.com/show_bug.cgi?id=629714#c0 Summary: NullReferenceException during Xsl transformation, where .Net works fine Classification: Mono Product: Mono: Class Libraries Version: 2.6.x Platform: x86 OS/Version: Linux Status: NEW Severity: Normal Priority: P5 - None Component: Sys.XML AssignedTo: [email protected] ReportedBy: [email protected] QAContact: [email protected] Found By: --- Blocker: --- Created an attachment (id=381699) --> (http://bugzilla.novell.com/attachment.cgi?id=381699) Testcase Description of Problem: Creating a patch for a cross-platform software lead to a NPE based crash on Linux, because differences between the way .Net and Mono handle Xsl functions. Steps to reproduce the problem: 1. Compile attached code 2. Run Actual Results: $ mono bin/Debug/Testcase.exe Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object at Mono.Xml.Xsl.XsltDocument.Evaluate (System.Xml.XPath.BaseIterator iter) [0x00000] in <filename unknown>:0 at System.Xml.XPath.Expression.EvaluateNodeSet (System.Xml.XPath.BaseIterator iter) [0x00000] in <filename unknown>:0 at System.Xml.XPath.ExprSLASH.Evaluate (System.Xml.XPath.BaseIterator iter) [0x00000] in <filename unknown>:0 at System.Xml.XPath.Expression.EvaluateNodeSet (System.Xml.XPath.BaseIterator iter) [0x00000] in <filename unknown>:0 at System.Xml.XPath.CompiledExpression.EvaluateNodeSet (System.Xml.XPath.BaseIterator iter) [0x00000] in <filename unknown>:0 at System.Xml.XPath.XPathNavigator.Select (System.Xml.XPath.XPathExpression expr, IXmlNamespaceResolver ctx) [0x00000] in <filename unknown>:0 at Mono.Xml.Xsl.XslTransformProcessor.Select (System.Xml.XPath.XPathExpression expr) [0x00000] in <filename unknown>:0 at Mono.Xml.Xsl.Operations.XslApplyTemplates.Evaluate (Mono.Xml.Xsl.XslTransformProcessor p) [0x00000] in <filename unknown>:0 at Mono.Xml.Xsl.Operations.XslTemplateContent.Evaluate (Mono.Xml.Xsl.XslTransformProcessor p) [0x00000] in <filename unknown>:0 at Mono.Xml.Xsl.Operations.XslLiteralElement.Evaluate (Mono.Xml.Xsl.XslTransformProcessor p) [0x00000] in <filename unknown>:0 at Mono.Xml.Xsl.Operations.XslTemplateContent.Evaluate (Mono.Xml.Xsl.XslTransformProcessor p) [0x00000] in <filename unknown>:0 at Mono.Xml.Xsl.XslTemplate.EvaluateCore (Mono.Xml.Xsl.XslTransformProcessor p, System.Collections.Hashtable withParams) [0x00000] in <filename unknown>:0 at Mono.Xml.Xsl.XslTemplate.Evaluate (Mono.Xml.Xsl.XslTransformProcessor p, System.Collections.Hashtable withParams) [0x00000] in <filename unknown>:0 at Mono.Xml.Xsl.XslTransformProcessor.ApplyTemplates (System.Xml.XPath.XPathNodeIterator nodes, System.Xml.XmlQualifiedName mode, System.Collections.ArrayList withParams) [0x00000] in <filename unknown>:0 at Mono.Xml.Xsl.XslDefaultNodeTemplate.Evaluate (Mono.Xml.Xsl.XslTransformProcessor p, System.Collections.Hashtable withParams) [0x00000] in <filename unknown>:0 at Mono.Xml.Xsl.XslTransformProcessor.ApplyTemplates (System.Xml.XPath.XPathNodeIterator nodes, System.Xml.XmlQualifiedName mode, System.Collections.ArrayList withParams) [0x00000] in <filename unknown>:0 at Mono.Xml.Xsl.Operations.XslApplyTemplates.Evaluate (Mono.Xml.Xsl.XslTransformProcessor p) [0x00000] in <filename unknown>:0 at Mono.Xml.Xsl.Operations.XslTemplateContent.Evaluate (Mono.Xml.Xsl.XslTransformProcessor p) [0x00000] in <filename unknown>:0 at Mono.Xml.Xsl.Operations.XslLiteralElement.Evaluate (Mono.Xml.Xsl.XslTransformProcessor p) [0x00000] in <filename unknown>:0 at Mono.Xml.Xsl.Operations.XslTemplateContent.Evaluate (Mono.Xml.Xsl.XslTransformProcessor p) [0x00000] in <filename unknown>:0 at Mono.Xml.Xsl.XslTemplate.EvaluateCore (Mono.Xml.Xsl.XslTransformProcessor p, System.Collections.Hashtable withParams) [0x00000] in <filename unknown>:0 at Mono.Xml.Xsl.XslTemplate.Evaluate (Mono.Xml.Xsl.XslTransformProcessor p, System.Collections.Hashtable withParams) [0x00000] in <filename unknown>:0 at Mono.Xml.Xsl.XslTransformProcessor.ApplyTemplates (System.Xml.XPath.XPathNodeIterator nodes, System.Xml.XmlQualifiedName mode, System.Collections.ArrayList withParams) [0x00000] in <filename unknown>:0 at Mono.Xml.Xsl.XslTransformProcessor.Process (System.Xml.XPath.XPathNavigator root, Mono.Xml.Xsl.Outputter outputtter, System.Xml.Xsl.XsltArgumentList args, System.Xml.XmlResolver resolver) [0x00000] in <filename unknown>:0 at System.Xml.Xsl.XslTransform.Transform (System.Xml.XPath.XPathNavigator input, System.Xml.Xsl.XsltArgumentList args, System.IO.TextWriter output, System.Xml.XmlResolver resolver) [0x00000] in <filename unknown>:0 at System.Xml.Xsl.XslTransform.Transform (IXPathNavigable input, System.Xml.Xsl.XsltArgumentList args, System.IO.TextWriter output) [0x00000] in <filename unknown>:0 at Testcase.Program.Main () [0x00000] in <filename unknown>:0 Expected Results: PS C:\...\Testcase> .\bin\Debug\Testcase.exe <?xml version="1.0" encoding="utf-16"?><result xmlns:testext="http://localhost/testext";><div class="test"></div></result > How often does this happen? 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