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  1. struct foo
  2. {
  3. 	operator int&()
  4. 	{
  5. 		return i;
  6. 	}
  7.  
  8. 	operator const int& () const
  9. 	{
  10. 		return i;
  11. 	}
  12.  
  13. private:
  14. 	int i;	
  15. };
  16.  
  17. int main()
  18. {
  19. 	foo f;
  20. 	switch (f)
  21. 	{
  22.  
  23. 	}
  24. }
Compilation error #stdin compilation error #stdout 0s 3292KB
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stdin
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Standard input is empty
compilation info 
prog.cpp: In function ‘int main()’:
prog.cpp:20:11: error: ambiguous default type conversion from ‘foo’
  switch (f)
           ^
prog.cpp:20:11: error:   candidate conversions include ‘foo::operator int&()’ and ‘foo::operator const int&() const’
stdout
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Standard output is empty
https://ideone.com/IHsBfD
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
secret

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