1 // CS0012: The type `A1' is defined in an assembly that is not referenced. Consider adding a reference to assembly `CS0012-lib-missing, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'
3 // Compiler options: -r:CS0012-lib.dll
5 using System.Threading.Tasks;
9 public static void Main ()
12 var t = Task.Factory.StartNew (() => {