[Mono-bugs] [Bug 22796] New - Conflicting warnings on "is" operator

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Changed by duco@lorentz.xs4all.nl.

http://bugzilla.ximian.com/show_bug.cgi?id=22796

--- shadow/22796	Fri Mar 29 16:28:52 2002
+++ shadow/22796.tmp.30981	Fri Mar 29 16:28:52 2002
@@ -0,0 +1,48 @@
+Bug#: 22796
+Product: Mono/MCS
+Version: unspecified
+OS: 
+OS Details: SuSE Linux 7.1
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Normal
+Component: Misc
+AssignedTo: mono-bugs@ximian.com                            
+ReportedBy: duco@lorentz.xs4all.nl               
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: Conflicting warnings on "is" operator
+
+Description of Problem:
+When using is-operator in a expression that can be evaluated at compile
+time, we get a two warnings: one being the negation of the other.
+
+Steps to reproduce the problem:
+class Base {}
+
+class Derived : Base {}
+
+class Test {
+
+        public static void Main()
+        {
+                Derived d = new Derived();
+
+                if (d is Base) {
+                        System.Console.WriteLine("d is base");
+                }
+
+        }
+
+Actual Results:
+./test.cs(11) warning CS0183: The expression is always of type `Base'
+./test.cs(11) warning CS0184: The expression is never of type `Base'
+
+Expected Results:
+./test.cs(11) warning CS0183: The expression is always of type `Base'
+
+How often does this happen? 
+Always