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  1. #include<utility>
  2. using namespace std;
  3.  
  4. struct X {
  5.         X() {}
  6.         X(X&&) { }
  7. };
  8. X global_m;
  9.  
  10. struct Converts {
  11.         operator X&& () const { return std::move(global_m); }
  12. };
  13.  
  14. int main() {
  15.         //bar          ( Converts{} );
  16.         X x1 { Converts{}.operator struct X&& () }; // works.
  17.         X m2 { Converts{} }; // error: "candidate constructor not viable: no known conversion from 'Converts' to 'X &&' for 1st argument"
  18. }
  19.  
Success #stdin #stdout 0s 3292KB
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https://ideone.com/u5Bnqv
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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