[Mono-bugs] [Bug 61048][Nor] New - Unable to get Type array from Module using FindTypes...

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Changed by banil@novell.com.

http://bugzilla.ximian.com/show_bug.cgi?id=61048

--- shadow/61048	2004-07-02 01:17:29.000000000 -0400
+++ shadow/61048.tmp.7399	2004-07-02 01:17:29.000000000 -0400
@@ -0,0 +1,108 @@
+Bug#: 61048
+Product: Mono: Runtime
+Version: unspecified
+OS: Red Hat 9.0
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Normal
+Component: misc
+AssignedTo: mono-bugs@ximian.com                            
+ReportedBy: banil@novell.com               
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL: 
+Summary: Unable to get Type array from Module using FindTypes...
+
+Description of Problem:
+Unable to get Type array from Module using FindTypes...
+Not sure if its a bug in Runtime or somewhere else, but compilation seems
+to succeed...
+
+
+Steps to reproduce the problem:
+Sample code with line numbers...
+
+01: using System;
+02: using System.Reflection;
+                                                                          
+     03: 
+04: namespace ReflectionModule_Examples
+05: {
+06:     class MyMainClass
+07:     {
+08:         static void Main()
+09:         {
+10:             Console.WriteLine("Test01::Main Begin");
+11:             Module[] moduleArray;
+                                                                          
+     12: 
+13:             moduleArray =
+Assembly.GetExecutingAssembly().GetModules(false);
+                                                                          
+     14:
+15:             // In a simple project with only one module, the module at
+index
+16:             // 0 will be the module containing these classes.
+17:             Module myModule = moduleArray[0];
+                                                                          
+     18: 
+19:             Type[] tArray = null;
+                                                                          
+     20: 
+21:             Console.WriteLine("Test01::Main Before calling FindTypes");
+22:             tArray = myModule.FindTypes(Module.FilterTypeName, "My*");
+23:             Console.WriteLine("Test01::Main after calling FindTypes");
+                                                                          
+     24: 
+25:             foreach(Type t in tArray)
+26:             {
+27:                 Console.WriteLine("Found a module beginning with My*:
+{0}.", t.Name);
+28:             }
+29:         }
+30:     }
+                                                                          
+     31: 
+32:     class MySecondClass
+33:     {
+34:     }
+                                                                          
+     35: 
+36:     // This class does not fit the filter criteria My*.
+37:     class YourClass
+38:     {
+39:     }
+40: }
+ 
+
+Actual Results:
+Compilation goes on fine and does not indicate any issues...
+On execution the output is as follows:
+---------------------------------------------
+Test01::Main Begin
+Test01::Main Before calling FindTypes
+ 
+Unhandled Exception: System.NullReferenceException: Object reference not
+set to an instance of an object
+in <0x00085> System.Reflection.Module:FindTypes
+(System.Reflection.TypeFilter,object)
+in <0x00094> ReflectionModule_Examples.MyMainClass:Main ()
+----------------------------------------------
+Line 22 seems to have some problem...
+
+Expected Results:
+Test01::Main Begin
+Test01::Main Before calling FindTypes
+Test01::Main after calling FindTypes
+Found a module beginning with My*: MyMainClass.
+Found a module beginning with My*: MySecondClass.
+
+How often does this happen? 
+Always
+
+Additional Information:
+This runs fine on .NET.
+In fact this is a sample taken from MSDN...
+http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemreflectionmoduleclassfindtypestopic.asp