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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. // Foo adds an element to a std::vector passed by reference
  5. // on construction in the destructor
  6. struct Foo {
  7.     Foo(std::vector<double>& v) : m_v(v){
  8.     }
  9.     ~Foo(){
  10.         m_v.push_back(1.0);
  11.     }
  12.     std::vector<double>& m_v;
  13. };
  14.  
  15. std::vector<double> bar(){
  16.     std::vector<double> ret;
  17.     Foo foo(ret);
  18.     return ret;
  19. }
  20.  
  21. int main(){
  22.     std::cout << bar().size() << "\n";
  23. }
Success #stdin #stdout 0s 4400KB
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https://ideone.com/pnxWuJ
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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