// CS0411: The type arguments for method `C.Test<T>(System.Func<T>)' cannot be inferred from the usage. Try specifying the type arguments explicitly // Line: 14 using System; interface IB { } class C { public static void Main () { Test (() => { if (true) return (C) null; return (IB) null; }); } static void Test<T> (Func<T> f) { } }