1 // CS1954: The best overloaded collection initalizer method `Data.Add(__arglist)' has some invalid arguments
3 // Compiler options: -langversion:linq
6 using System.Collections;
8 class Data : IEnumerable
10 public IEnumerator GetEnumerator () { return null; }
12 public void Add (__arglist)
21 var c = new Data { 1 };