[Mono-bugs] [Bug 49823][Nor] New - CS0019 detected for comparable instances
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Sat, 18 Oct 2003 09:17:10 -0400 (EDT)
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Changed by rodolfocampero@hotmail.com.
http://bugzilla.ximian.com/show_bug.cgi?id=49823
--- shadow/49823 2003-10-18 09:17:10.000000000 -0400
+++ shadow/49823.tmp.11010 2003-10-18 09:17:10.000000000 -0400
@@ -0,0 +1,52 @@
+Bug#: 49823
+Product: Mono/MCS
+Version: unspecified
+OS:
+OS Details:
+Status: NEW
+Resolution:
+Severity: Unknown
+Priority: Normal
+Component: Misc
+AssignedTo: mono-bugs@ximian.com
+ReportedBy: rodolfocampero@hotmail.com
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL:
+Cc:
+Summary: CS0019 detected for comparable instances
+
+Description of Problem:
+mcs stop compilation, uncorrectly detecting a CS0019 error, for a valid
+input program.
+
+Steps to reproduce the problem:
+1. Copy the following program in a text file called InterfaceTest.cs:
+using System;
+namespace Test {
+ public class Test {
+ public static void Main(string[] args) {
+ BaseClass baseRef = new DerivedClass();
+ ITest interfaceRef = (ITest)baseRef;
+ Console.WriteLine("Is this wrong? {0}",
+(interfaceRef!=baseRef));
+ }
+ }
+ public interface ITest {}
+ public class BaseClass {}
+ public class DerivedClass: BaseClass, ITest {}
+}
+
+2. Try to compile the program using:
+mcs InterfaceTest.cs
+
+Actual Results:
+InterfaceTest.cs(7) error CS0019: Operator != cannot be applied to operands
+of type `Test.ITest' and `Test.BaseClass'
+Compilation failed: 1 error(s), 0 warnings
+
+Expected Results:
+Compilation successful.
+
+How often does this happen?
+Always.