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  1. namespace std {
  2. class nullptr_t {
  3. public:
  4.     // Required in order to create const nullptr_t objects without an
  5.     // explicit initializer in GCC 4.5, a la:
  6.     //
  7.     // const std::nullptr_t nullptr;
  8.     nullptr_t() { }
  9.  
  10.     // Make nullptr convertible to any pointer type.
  11.     template<typename T> operator T*() const { return 0; }
  12.     // Make nullptr convertible to any member pointer type.
  13.     template<typename C, typename T> operator T C::*() { return 0; }
  14. private:
  15.     // Do not allow taking the address of nullptr.
  16.     void operator&();
  17. };
  18. }
  19.  
  20. const std::nullptr_t nullptr;
  21.  
  22. int main(int argc, char** argv)
  23. {
  24. 	const char* case1 = nullptr; // working
  25. 	unsigned* case4 = argc > 1 ? nullptr : nullptr; //works
  26. 	unsigned* case5 = argc > 2 ? (unsigned*)0 : nullptr; //not working. (It is the major issue as of now)
  27.     unsigned* case6 = nullptr;
  28.  
  29. 	return 0;
  30. }
Success #stdin #stdout 0s 2724KB
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https://ideone.com/Bnp6th
language:
C++ 4.3.2 (gcc-4.3.2)
created:
10 years ago
visibility:
secret

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