Re: [PATCH] gpio: acpi: work around false-positive -Wstring-overflow warning

[Joe Perches]

On Wed, 2017-09-06 at 21:53 +0200, Arnd Bergmann wrote:
> On Wed, Sep 6, 2017 at 5:52 PM, Joe Perches <joe@xxxxxxxxxxx> wrote:
> > On Wed, 2017-09-06 at 17:47 +0200, Arnd Bergmann wrote:
> > > As suggested by Andy, this changes the format string to have a fixed length.
> > > Since modifying the range check did not help, I also opened a bug against
> > > gcc, see link below.
> > 
> > The code has
> > 
> >         int pin
> > 
> > does changing pin to unsigned int matter?
> 
> No difference, see also the gcc bugzilla report.

Perhaps the bug report does not apply here as the
function is casting a unsigned int to an int through
a pointer when the int could now be negative, the int
is tested for < 256 and is then printed.