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  1. #include <functional>
  2. #include <iostream>
  3.  
  4. void* Test() {
  5. 	return nullptr;
  6. }
  7.  
  8. int main(int argc, char* argv[]) {
  9. 	std::function<void()> foo;
  10. 	std::cout << !!foo << std::endl;
  11.  
  12. 	foo = nullptr;
  13. 	std::cout << !!foo << std::endl;
  14.  
  15. 	foo = reinterpret_cast<void(*)()>(Test());
  16. 	std::cout << !!foo << std::endl;
  17.  
  18. 	return 0;
  19. }
Success #stdin #stdout 0s 3296KB
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https://ideone.com/1JA0Zc
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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