errors/gcs0411-15.cs

   1 // CS0411: The type arguments for method `C.Foo<T>(IFoo<T>, IFoo<T>)' cannot be inferred from the usage. Try specifying the type arguments explicitly
   2 // Line: 18
   3 // Compiler options: -langversion:future
   4
   5 interface IFoo<in T>
   6 {
   7 }
   8
   9 class C
  10 {
  11         public static void Foo<T> (IFoo<T> e1, IFoo<T> e2)
  12         {
  13         }
  14
  15         public static void Main ()
  16         {
  17                 IFoo<int> a = null;
  18                 IFoo<object> b = null;
  19                 Foo (a, b);
  20         }
  21 }