> Just tell GCC to shut up and try again, if persistent make an issue in GH.

That seems like a cavalier approach to type warnings. Sure, it may not be an issue, most of the time, but type warnings are there to highlight/suggest potentially bad code, e.g., poorly thought out or insufficient consideration given to typing, overflows, etc.

For a one-off or bit of hobby code, I'm quite happy to compile without warnings and/or to ignore whatever warnings my code generates, but for something I am sharing with others, especially releasing and hoping they will adopt, I crank the warnings to 11 and make sure compiles are clean, without pragmas.