[Mono-bugs] [Bug 73995][Nor] New - [GMCS] runtime cannot handle either generic "where" or overloaded generic methods
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bugzilla-daemon@bugzilla.ximian.com
Wed, 23 Mar 2005 00:11:14 -0500 (EST)
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Changed by atsushi@ximian.com.
http://bugzilla.ximian.com/show_bug.cgi?id=73995
--- shadow/73995 2005-03-23 00:11:14.000000000 -0500
+++ shadow/73995.tmp.18196 2005-03-23 00:11:14.000000000 -0500
@@ -0,0 +1,59 @@
+Bug#: 73995
+Product: Mono: Runtime
+Version: unspecified
+OS:
+OS Details:
+Status: NEW
+Resolution:
+Severity:
+Priority: Normal
+Component: misc
+AssignedTo: mono-bugs@ximian.com
+ReportedBy: atsushi@ximian.com
+QAContact: mono-bugs@ximian.com
+TargetMilestone: ---
+URL:
+Cc:
+Summary: [GMCS] runtime cannot handle either generic "where" or overloaded generic methods
+
+The example code below cannot run under mono runtime. Note that the code
+won't compile with gmcs because of bug #73992 and bug #73993, so you will
+need MS csc unless those bugs got fixed.
+
+----
+using System;
+static class Test1 {
+ public interface IOp<T> {
+ T Func(uint v);
+ }
+ public struct Op : IOp<ushort>, IOp<uint> {
+ ushort IOp<ushort>.Func(uint v) { return (ushort )(v * 2); }
+ uint IOp<uint>.Func(uint v) { return v * 4; }
+ }
+ static void Foo<T,OP>(uint v) where T:struct where OP : IOp<T> {
+ OP op = default(OP);
+ System.Console.WriteLine( op.Func(v) );
+ }
+ static public void Main() {
+ Foo<ushort, Op>(100);
+ Foo<uint, Op>(100);
+ }
+};
+----
+
+Actual Results:
+** (test1.exe:6362): WARNING **: Missing method Func in assembly
+/xxx/test1.exe token a000004
+
+Unhandled Exception: System.NullReferenceException: Object reference
+not set to an instance of an object
+in (unmanaged) 0x80ccfe2
+in <0x0000a> Test1:Main ()
+
+Expected Results:
+under MS runtime, it outputs
+200
+400
+
+How often does this happen?
+consistently.