Compiler Error C3187

'__func__': is only available within the body of a function

Remarks

The predefined identifier __func__ is not available outside the body of a function.

To correct this error, move the identifier inside the body of a function.

Example

The following example generates C3187:

// compile with: /c

#include <iostream>

auto global = __func__;   // C3187, usage in global scope
void func(const char* f = __func__);   // C3187, usage in parameter list

// correct usage inside a function
void test()
{
    std::cout << __func__; // outputs: test
}

See also

C2457