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  1. #include <iostream>
  2. using std::cout;
  3. using std::endl;
  4.  
  5. struct dummy{};
  6.  
  7. struct BigInt {
  8.     BigInt( const dummy & ) {}
  9.     BigInt() {
  10.         cout << __PRETTY_FUNCTION__ << " : very very long operation"<< endl;
  11.     }
  12.     BigInt( const BigInt & ) {
  13.         cout << __PRETTY_FUNCTION__ << " : very very long operation"<< endl;
  14.     }
  15.     BigInt & operator=( const BigInt & ) {
  16.         cout << __PRETTY_FUNCTION__ << " : very very long operation"<< endl;
  17.         return *this;
  18.     }
  19. };
  20.  
  21. struct Foo {
  22.     BigInt i;
  23.     Foo( const BigInt & j ) {
  24.         i = j;
  25.     }
  26. };
  27.  
  28. struct Bar {
  29.     BigInt i;
  30.     Bar( const BigInt & j ) : i( j ) {}
  31. };
  32.  
  33. int main() {
  34.     BigInt bi( (dummy()) );
  35.     Foo foo( bi );
  36.     Bar bar( bi );
  37. }
Success #stdin #stdout 0s 2852KB
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stdin
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Standard input is empty
stdout
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BigInt::BigInt() : very very long operation
BigInt& BigInt::operator=(const BigInt&) : very very long operation
BigInt::BigInt(const BigInt&) : very very long operation
https://ideone.com/v5dkzo
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
secret

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