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  1. #include <iostream>
  2.  
  3. void foo( int*&&  ) { std::cout << "foo( int*&&  )\n" ; }
  4. void foo( int&&  ) { std::cout << "foo( int&&  )\n" ; }
  5.  
  6. void bar( int* const&  ) { std::cout << "foo( int* const&  )\n" ; }
  7. void bar( const int&  ) { std::cout << "bar( const int&  )\n" ; }
  8.  
  9. void baz( int*&  ) { std::cout << "foo( int*&  )\n" ; }
  10. void foo( int&  ) { std::cout << "foo( int&  )\n" ; }
  11.  
  12. void foobar( int*  ) { std::cout << "foobar( int* )\n" ; }
  13. void foobar( int  ) { std::cout << "foobar( int  )\n" ; }
  14.  
  15. int main()
  16. {
  17.   int a [] = {10,10,10,10,10,11,10,11};
  18.   short s = 23 ;
  19.  
  20.   foo(a); // fine a => rvalue of type int*; passed by reference to rvalue
  21.   foo(s); // fine s => rvalue of type int; passed by reference to rvalue
  22.  
  23.   bar(a) ; // fine a => rvalue of type int*; passed by reference to const
  24.   bar(s) ; // fine s => rvalue of type int; passed by reference to const
  25.  
  26.   // baz(a) ; // *** error, can't pass rvalue  as reference to non-const lvalue
  27.   //baz(s) ;  // *** error, can't pass rvalue  as reference to non-const lvalue
  28.  
  29.   foobar(a) ; // fine a => rvalue of type int*; passed by value (pass a copy of the rvalue)
  30.   foobar(s) ; // fine s => rvalue of type int; passed by value (pass a copy of the rvalue)
  31. }
  32.  
Success #stdin #stdout 0s 2852KB
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stdin
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Standard input is empty
stdout
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foo( int*&&  )
foo( int&&  )
foo( int* const&  )
bar( const int&  )
foobar( int* )
foobar( int  )
https://ideone.com/4WLtS9
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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