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  1. struct X{};
  2.  
  3. template<class T>
  4. decltype(X() == int()) f(T const&){ return true; }
  5.  
  6. int main(void) {
  7.   X x;
  8.   f(x);
  9. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.cpp:4:21: error: no match for 'operator==' in 'X() == int()'
stdout
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Standard output is empty
https://ideone.com/JV6Co
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
public

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