c26497.md

title	ms.date	f1_keywords	helpviewer_keywords	description
Warning C26497	03/22/2018	C26497 USE_CONSTEXPR_FOR_FUNCTION	C26497	CppCoreCheck rule that enforces C++ Core Guidelines F.4

Warning C26497

This function function-name could be marked constexpr if compile-time evaluation is desired (f.4).

See also

C++ Core Guidelines F.4.

Example

const int GetTheAnswer(int x) noexcept { return 42 + x; } // Could be marked constexpr

void function1() noexcept
{
    const int theAnswer = GetTheAnswer(0);
}

To reduce code analysis noise on new code, this warning isn't issued if the function has an empty implementation.

int function1(){  // no C26497
    return 1;
}
void function2(){} // no C26497