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  1. using System;
  2.  
  3. class B {
  4.     private B() { }
  5. }
  6.  
  7. class C: B {
  8.     class E: Exception { }
  9.     static C instance;
  10.     public static C Instance() {
  11.         try {
  12.             new C();
  13.         } catch(E) { }
  14.         GC.Collect();
  15.         GC.WaitForPendingFinalizers();
  16.         return instance;
  17.     }
  18.     static int Throw() {
  19.         throw new E();
  20.     }
  21.     C(): this(Throw()) { }
  22.     C(int i): this() { }
  23.     ~C() {
  24.         instance = this;
  25.     }
  26. }
  27.  
  28. static class D {
  29.     static void Main() {
  30.         Console.WriteLine(C.Instance().GetType());
  31.     }
  32. }
Success #stdin #stdout 0.01s 131520KB
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C
https://ideone.com/6xPB8k
language:
C# (gmcs 5.20.1)
created:
5 years ago
visibility:
secret

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