[Mono-bugs] [Bug 75889][Nor] New - Wrong 'is' statement execution (generics)

bugzilla-daemon at bugzilla.ximian.com bugzilla-daemon at bugzilla.ximian.com
Tue Aug 23 19:40:15 EDT 2005


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Changed by carlos at unixmexico.org.

http://bugzilla.ximian.com/show_bug.cgi?id=75889

--- shadow/75889	2005-08-23 19:40:15.000000000 -0400
+++ shadow/75889.tmp.4663	2005-08-23 19:40:15.000000000 -0400
@@ -0,0 +1,56 @@
+Bug#: 75889
+Product: Mono: Runtime
+Version: 1.1
+OS: 
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Normal
+Component: misc
+AssignedTo: mono-bugs at ximian.com                            
+ReportedBy: carlos at unixmexico.org               
+QAContact: mono-bugs at ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: Wrong 'is' statement execution (generics)
+
+The runtime executes the 'is' statement the worng way with generics.
+
+Compile the app below with gmcs:
+
+====================
+using System;
+using System.Collections;
+using System.Collections.Generic;
+
+ public class B : IComparable<B> {
+         public int CompareTo (B b)
+         {
+                 return 0;
+         }
+ }
+
+ public class Tester {
+
+         static void Main ()
+         {
+                 B b = new B ();
+
+                 // This should be false
+                 if (b is IComparable<object>)
+                         Console.WriteLine ("b is IComparable<object>");
+         }
+
+ }
+==============
+
+Actual Results:
+b is IComparable<object>
+
+Expected Results:
+Nothing.
+
+How often does this happen? 
+Always.


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