https://bugzilla.novell.com/show_bug.cgi?id=483247
Summary: IsDefined on methods does not work for interface-type
queries
Classification: Mono
Product: Mono: Class Libraries
Version: 2.2.x
Platform: All
OS/Version: All
Status: NEW
Severity: Normal
Priority: P5 - None
Component: CORLIB
AssignedTo: [email protected]
ReportedBy: [email protected]
QAContact: [email protected]
Found By: ---
Created an attachment (id=277887)
--> (https://bugzilla.novell.com/attachment.cgi?id=277887)
Sample program to reproduce the bug
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; GTB5;
SLCC1; .NET CLR 2.0.50727; .NET CLR 1.1.4322; .NET CLR 3.5.21022; WWTClient2;
NET CLR 3.5.30729; .NET CLR 3.0.30618; MS-RTC LM 8)
Suppose an attribute implements an interface. When IsDefined is called on a
MethodInfo object to check whether the attribute is defined on the method or
not and the first argument is the interface type then IsDefined returns false.
The Microsoft .NET Framework implementation, on the other hand, returns true
for the same scenario.
Reproducible: Always
Steps to Reproduce:
Following is the source code of a simple C# console program to demonstrate the
bug:
using System;
interface IFoo {}
[AttributeUsage(AttributeTargets.Method)]
class FooAttribute : Attribute, IFoo {}
class Bar
{
[Foo]
public void Baz() {}
}
static class Program
{
static void Main()
{
var method = typeof(Bar).GetMethod("Baz");
Console.WriteLine("FooAttribute? " +
method.IsDefined(typeof(FooAttribute), true));
Console.WriteLine("IFoo? " + method.IsDefined(typeof(IFoo), true));
}
}
Actual Results:
The output of the program demonstrating the bug is:
FooAttribute? True
IFoo? False
Expected Results:
The expected output was:
FooAttribute? True
IFoo? True
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