Compiler Error C2457

'macro': predefined macro cannot appear outside of a function body

Remarks

You attempted to use a predefined macro, such as __FUNCTION__, in a global space.

Example

The following example generates C2457 and also shows correct usage:

// C2457.cpp
#include <stdio.h>

__FUNCTION__;   // C2457, cannot be global

int main()
{
    printf_s("\n%s", __FUNCTION__);   // OK
}