// CS0657: `param' is not a valid attribute location for this declaration. Valid attribute locations for this declaration are `method, return'. All attributes in this section will be ignored // Line: 15 // Compiler options: -warnaserror using System; [AttributeUsage(AttributeTargets.All)] public class TestAttribute: Attribute { } class C { int Prop { [param:Test] get { return 1; } } }