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  1. #include <iostream>
  2.  
  3. class CBase
  4. {
  5. public:
  6.     virtual void fn() = 0;
  7. };
  8.  
  9. class CX
  10. {
  11. public:
  12.     virtual void xx()
  13.     {
  14.         std::cout << "CX" << std::endl;
  15.     };
  16. };
  17.  
  18. class C1 : public CBase, CX
  19. {
  20. public:
  21.     virtual void fn()
  22.     {
  23.         std::cout << "C1" << std::endl;
  24.     };
  25. };
  26.  
  27. class C2 : public CX, CBase
  28. {
  29. public:
  30.     virtual void fn()
  31.     {
  32.         std::cout << "C2" << std::endl;
  33.     };
  34. };
  35.  
  36. class Hoge
  37. {
  38. public:
  39.     C1 member1;
  40.     C2 member2;
  41. };
  42.  
  43. int main()
  44. {
  45.     {
  46.         C1 Hoge::*pm1 = &Hoge::member1;
  47.         C2 Hoge::*pm2 = &Hoge::member2;
  48.  
  49.         Hoge hoge;
  50.         (&hoge->*pm1).fn(); // C1
  51.         (&hoge->*pm2).fn(); // C2
  52.     }
  53.  
  54.     {
  55.         CBase Hoge::*pm1 = reinterpret_cast<CBase Hoge::*>(&Hoge::member1);
  56.         CBase Hoge::*pm2 = reinterpret_cast<CBase Hoge::*>(&Hoge::member2);
  57.  
  58.         Hoge hoge;
  59.         (&hoge->*pm1).fn(); // C1
  60.         (&hoge->*pm2).fn(); // CX ... oops! called CX::xx
  61.     }
  62.  
  63.     {
  64.         CBase Hoge::*pm1 = reinterpret_cast<CBase Hoge::*>(&Hoge::member1);
  65.         CBase Hoge::*pm2 = reinterpret_cast<CBase Hoge::*>(&Hoge::member2);
  66.  
  67.         Hoge hoge;
  68.         (&hoge->*(reinterpret_cast<C1 Hoge::*>(pm1))).fn(); // C1
  69.         (&hoge->*(reinterpret_cast<C2 Hoge::*>(pm2))).fn(); // C2
  70.     }
  71.  
  72.     return 0;
  73. }
  74.  
Success #stdin #stdout 0s 3296KB
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Standard input is empty
stdout
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C1
C2
C1
CX
C1
C2
https://ideone.com/Z8MAVb
http://q...content-available-to-author-only...o.jp/q/3475
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
public

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