Oh, yeah, the codegen for the fn() itself would likely be the same, but the prototype of that definition is still a K&R function. https://godbolt.org/z/Psvae55P

Oh, yeah, the codegen for the fn() itself would likely be the same, but the prototype of that definition is still a K&R function. https://godbolt.org/z/Psvae55Pr https://godbolt.org/z/Psvae55Pr