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  1. #include <iostream>
  2. #include <stdexcept>
  3.  
  4. constexpr int foo(int a)
  5. {
  6. 	return (a >= 0) ? a : throw std::invalid_argument("Negative!");
  7. }
  8.  
  9. template <int n>
  10. struct Foo
  11. {
  12. };
  13.  
  14. int main()
  15. {
  16. 	Foo<foo(1)> f1();
  17. 	//Foo<foo(-1)> f2(); compile time error
  18. 	foo(1);
  19. 	try
  20. 	{
  21. 		foo(-1);
  22. 	}
  23. 	catch ( ... )
  24. 	{
  25. 	}
  26. 	return 0;
  27. }
  28.  
Success #stdin #stdout 0s 3424KB
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https://ideone.com/EMxe2K
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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