Ethan Tira-Thompson <ejt@xxxxxxxxxxxxxx> writes:
> Depending on the target we're compiling for, 'N' could be 0. In
> which case, all our loops:
> for(unsigned i=0; i<NUM_SENSORS; i++) { /* ... */ }
> spew the warning:
> warning: comparison of unsigned expression < 0 is always false
>
> I'd like to keep -W / -Wextra enabled for the other things it
> provides, but this particular warning is gumming up the works.
>
> As far as I know, there's no flag (a la -Wno-sign-compare) for this
> particular warning. Correct?
In mainline gcc this is controlled by -Wtype-limits. Unfortunately,
you are correct that in all released versions of gcc there is no flag
other than -Wextra which controls this warning. -Wtype-limits will be
new in gcc 4.3.
Ian
