[Mono-bugs] [Bug 74905][Nor] New - gmcs does not allow delegate inheritance in generic classes

bugzilla-daemon@bugzilla.ximian.com bugzilla-daemon@bugzilla.ximian.com
Wed, 11 May 2005 04:14:40 -0400 (EDT)


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Changed by dsilva@ccs.neu.edu.

http://bugzilla.ximian.com/show_bug.cgi?id=74905

--- shadow/74905	2005-05-11 04:14:40.000000000 -0400
+++ shadow/74905.tmp.23087	2005-05-11 04:14:40.000000000 -0400
@@ -0,0 +1,45 @@
+Bug#: 74905
+Product: Mono: Compilers
+Version: 1.1
+OS: 
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Normal
+Component: C#
+AssignedTo: mono-bugs@ximian.com                            
+ReportedBy: dsilva@ccs.neu.edu               
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: gmcs does not allow delegate inheritance in generic classes
+
+Please fill in this template when reporting a bug, unless you know what you
+are doing.
+Description of Problem:
+
+The Processing function type is public and should be inherited here:
+
+  public abstract class List <T> {
+    public delegate void Processing(T obj);
+
+    public abstract void each(Processing f);
+  }
+
+  public class Nil<T> : List<T> {
+    public static Nil<T> nil = new Nil<T>();
+    private Nil() {}
+
+    public override void each(Processing f) {}
+  }
+
+but gmcs signals a strangely-worded error:
+
+$ gmcs -target:library Test.cs
+Test.cs(12) error CS0505: 'Nil`1.each(List`1.Processing)': cannot override
+because 'List`1.each' is not a method
+Test.cs(5): 'List`1.each(List`1.Processing)' (name of symbol related to
+previous error
+Compilation failed: 1 error(s), 0 warnings