[Mono-bugs] [Bug 52643][Wis] New - XslTransform.Transform call fails with "Unhandled Exception: System.OutOfMemoryException" when nothing is returned from the transformation

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Changed by wmavis@thinktmr.com.

http://bugzilla.ximian.com/show_bug.cgi?id=52643

--- shadow/52643	2004-01-06 17:07:02.000000000 -0500
+++ shadow/52643.tmp.28747	2004-01-06 17:07:02.000000000 -0500
@@ -0,0 +1,146 @@
+Bug#: 52643
+Product: Mono/Class Libraries
+Version: unspecified
+OS: 
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Wishlist
+Component: System.XML
+AssignedTo: mono-bugs@ximian.com                            
+ReportedBy: wmavis@thinktmr.com               
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: XslTransform.Transform call fails with "Unhandled Exception: System.OutOfMemoryException" when nothing is returned from the transformation
+
+Description of Problem: 
+When a Transformation does not return anything, the Transformation call 
+fails with: 
+ 
+(Transform.exe:32481): GLib-CRITICAL **: file gutf8.c: line 1335 
+(g_utf8_to_utf16): assertion `str != NULL' failed 
+GC Warning: Out of Memory!  Returning NIL! 
+ 
+Unhandled Exception: System.OutOfMemoryException: There is insufficient 
+memory to continue execution 
+ 
+ 
+Steps to reproduce the problem: 
+1. Compile and run the following code: 
+ 
+using System; 
+using System.Xml; 
+using System.Xml.Xsl; 
+ 
+class Transform 
+{ 
+        static void Main() 
+        { 
+                XmlDocument xml; 
+                XslTransform goodXsl; 
+                XslTransform badXsl; 
+ 
+                Console.WriteLine("Setup our XSL"); 
+                xml = new XmlDocument(); 
+                xml.LoadXml( 
+                                "<?xml version=\"1.0\" ?>" + 
+                                "<xsl:stylesheet 
+xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\" version=\"1.0\">" + 
+                                "       <xsl:output method=\"text\" />" + 
+                                "       <xsl:template match=\"/\">This 
+version works\n</xsl:template>" + 
+                                "</xsl:stylesheet>" 
+                        ); 
+ 
+                goodXsl = new XslTransform(); 
+                goodXsl.Load(xml, null, null); 
+ 
+                xml.LoadXml( 
+                                "<?xml version=\"1.0\" ?>" + 
+                                "<xsl:stylesheet 
+xmlns:xsl=\"http://www.w3.org/1999/XSL/Transform\" version=\"1.0\">" + 
+                                "       <xsl:output method=\"text\" />" + 
+                                "       <xsl:template 
+match=\"/\"></xsl:template>" + 
+                                "</xsl:stylesheet>" 
+                        ); 
+ 
+                badXsl = new XslTransform(); 
+                badXsl.Load(xml, null, null); 
+ 
+                Console.WriteLine("Setup our XML"); 
+                xml.LoadXml("<NeedSomething />"); 
+ 
+                Console.WriteLine("Good Transform: "); 
+                goodXsl.Transform(xml, null, Console.Out); 
+                Console.WriteLine("Done"); 
+ 
+                Console.WriteLine("Bad Transform: "); 
+                badXsl.Transform(xml, null, Console.Out); 
+                Console.WriteLine("Done"); 
+        } 
+} 
+ 
+ 
+Actual Results: 
+mono Transform.exe 
+Setup our XSL 
+Setup our XML 
+Good Transform: 
+This version works 
+Done 
+Bad Transform: 
+ 
+(Transform.exe:32481): GLib-CRITICAL **: file gutf8.c: line 1335 
+(g_utf8_to_utf16): assertion `str != NULL' failed 
+GC Warning: Out of Memory!  Returning NIL! 
+ 
+Unhandled Exception: System.OutOfMemoryException: There is insufficient 
+memory to continue execution 
+in (unmanaged) /usr/local/lib/libmono.so.0(mono_raise_exception+0x1f) 
+[0x4008beff] 
+in (unmanaged) /usr/local/lib/libmono.so.0 [0x4008a804] 
+in (unmanaged) /usr/local/lib/libmono.so.0(mono_string_new_size+0x94) 
+[0x4008b3c4] 
+in (unmanaged) /usr/local/lib/libmono.so.0(mono_string_new_utf16+0x2c) 
+[0x4008b2ac] 
+in (unmanaged) /usr/local/lib/libmono.so.0(mono_string_new_len+0x68) 
+[0x4008b468] 
+in (unmanaged) /usr/local/lib/libmono.so.0 [0x400a6ac5] 
+in <0x0002b> (wrapper managed-to-native) 
+System.Runtime.InteropServices.Marshal:PtrToStringAnsi (intptr,int) 
+in <0x00081> System.Xml.Xsl.UnmanagedXslTransform:GetStringFromDocument 
+(intptr,intptr) 
+in <0x000f8> 
+System.Xml.Xsl.UnmanagedXslTransform:ApplyStylesheetAndGetString 
+(intptr,string[],System.Collections.Hashtable) 
+in <0x0046d> System.Xml.Xsl.UnmanagedXslTransform:Transform 
+(System.Xml.XPath.XPathNavigator,System.Xml.Xsl.XsltArgumentList,System.Xml.XmlWriter,System.Xml.XmlResolver) 
+in <0x0004b> System.Xml.Xsl.UnmanagedXslTransform:Transform 
+(System.Xml.XPath.XPathNavigator,System.Xml.Xsl.XsltArgumentList,System.IO.TextWriter,System.Xml.XmlResolver) 
+in <0x0001a> System.Xml.Xsl.XslTransform:Transform 
+(System.Xml.XPath.XPathNavigator,System.Xml.Xsl.XsltArgumentList,System.IO.TextWriter,System.Xml.XmlResolver) 
+in <0x0003d> System.Xml.Xsl.XslTransform:Transform 
+(System.Xml.XPath.IXPathNavigable,System.Xml.Xsl.XsltArgumentList,System.IO.TextWriter) 
+in <0x0016e> .Transform:Main () 
+ 
+ 
+Expected Results: 
+mono Transform.exe 
+Setup our XSL 
+Setup our XML 
+Good Transform: 
+This version works 
+Done 
+Bad Transform: 
+Done 
+ 
+ 
+How often does this happen?  
+  Every time 
+ 
+ 
+Additional Information: