1 // CS1644: Feature `nullable types' cannot be used because it is not part of the C# 1.0 language specification 2 // Line: 9 3 // Compiler options: -langversion:ISO-1 4 5 struct C 6 { GC7 void G () 8 { 9 object o = (C?[]) this; 10 } 11 } 12