[Mono-bugs] [Bug 75029][Nor] New - Invoke(obj, args) fails on static methods if obj is not null

[bugzilla-daemon at bugzilla.ximian.com]

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Changed by sgay at bigorno.net.

http://bugzilla.ximian.com/show_bug.cgi?id=75029

--- shadow/75029	2005-05-23 07:52:51.000000000 -0400
+++ shadow/75029.tmp.21024	2005-05-23 07:52:51.000000000 -0400
@@ -0,0 +1,69 @@
+Bug#: 75029
+Product: Mono: Runtime
+Version: 1.1
+OS: All
+OS Details: Debian testing, probably all
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Normal
+Component: misc
+AssignedTo: mono-bugs at ximian.com                            
+ReportedBy: sgay at bigorno.net               
+QAContact: mono-bugs at ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: Invoke(obj, args) fails on static methods if obj is not null
+
+Description of Problem:
+When calling MethodInfo:Invoke(obj, args) on a static method, with obj
+being not null, an exception is thrown. It works fine on Windows.
+
+Steps to reproduce the problem:
+Compile and run the following code:
+
+using System;
+using System.Reflection;
+
+public class MainClass
+{
+  public static void Main()
+  {
+    Foo foo = new Foo();
+    Type type = foo.GetType();
+    MethodInfo mi = type.GetMethod("DoFoo");
+    object[] args = { 1, 1 };
+    object inst = new Object();
+    object result = mi.Invoke(inst, args);
+    Console.WriteLine("1+1={0}", result);
+  }
+}
+
+public class Foo
+{
+  public static int DoFoo(int x, int y)
+  {
+    return x+y;
+  }
+}
+
+Actual Results:
+Unhandled Exception: System.Reflection.TargetException: Unable to invoke an
+invalid target.
+in <0x00000> <unknown method>
+in (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke
+(object,object[])
+in <0x0006f> System.Reflection.MonoMethod:Invoke (System.Object obj,
+BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[]
+parameters, System.Globalization.CultureInfo culture)
+
+Expected Results:
+Console displays: "1+1=2"
+This is what happens on Windows.
+
+How often does this happen? 
+Always
+
+Additional Information:
+Detected in FlexWiki. Currently using a workaround using mi.IsStatic.