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  1. #include <iostream>
  2. #include <typeinfo>
  3. using namespace std;
  4. template <class C> struct MakeAlias : C{ typedef C Base; };
  5. class StackTrace{
  6.       public:
  7.       static int var;
  8.       virtual ~StackTrace() {}
  9.       template <class T> void printStackTrace(T* c){
  10.           if(typeid(T)==typeid(StackTrace))return; 
  11.           cout << typeid(T).name() << "." << endl;
  12.           class T::Base *V;
  13.           printStackTrace(V);
  14.      }
  15.     void printStackTrace(StackTrace *c)
  16.     {
  17.       cout << typeid(StackTrace).name() << "." << endl;
  18.     }
  19. };
  20. class A : public MakeAlias<StackTrace>{
  21. };
  22. class B : public MakeAlias<A>{
  23. };
  24. class C : public MakeAlias<B>{
  25.     public:
  26.     void hello(){
  27.         cout << "hello from ";
  28.         StackTrace::printStackTrace(this);
  29.         cout << endl;
  30.     }
  31.  
  32. };
  33. int main(){
  34.     C c;
  35.     c.hello();
  36. }
Success #stdin #stdout 0s 3296KB
comments (?)
stdin
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Standard input is empty
stdout
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hello from 1C.
1B.
1A.
10StackTrace.
https://ideone.com/hvPzCF
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
secret

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