Re: compilers and unused args in functions

[Valery Ushakov <uwe%stderr.spb.ru@localhost>]

On Fri, Jul 05, 2024 at 11:36:06 +0700, Robert Elz wrote:

> So, now I have all these functions (but one) with an arg they don't
> need, and have no use for.
> 
> I could add something stupid like
> 	arg = arg;
> or something to use the value (but then the compiler is likely to
> warn about arg being assigned a value which is never used) - but
> even if that would work, is at least potentially meaningless extra
> code generated.

<sys/cdefs.h> defines a no-op __USE() macro that shuts up the warning

    __USE(var);

-uwe