Ignoring weffc++ initialization list order warning for specific code

Question

I have below code:

class Base {
    // Some code
    Base(int y) {}
}

class Derived : Base {
       int test;
       Derived(int x);
 }

 Derived::Derived(int x) : Base(x)     {
       // Some code and calculation to generate vale of test
       test = val;
  }

I am compiling with flag '-Weffc++'. And I get warning 'test need to be initialize in initialization list.'
But I can't do that as I need to do few calculation to generate value of test.

So to avoid this error I did try '-Wno-reorder' flag but it did not work. Also I don't prefer it, as it will disable this warning for all the code, I just want to disable this warning for this specific case.

I also did it using '#pragma GCC diagnostic ignore -Weffc++' placed just before constructor in cpp file and it did work. But I need to add pragma to all the constructors where I want to avoid this warning.

But is there any better way to avoid Weffc++ initialization list order warning for specific code. Or is there way to fix this warning?

Answer 1

Derived::Derived(int x) : Base{ x }, test{} // shut up the compiler.
{
    // Some code and calculation to generate vale of test
    test = val;
}