On Wed, Aug 01, 2007 at 12:38:39PM +0200, Richard Knutsson wrote:
> Mike Frysinger wrote:
> >On 7/31/07, Richard Knutsson <[email protected]> wrote:
> >
> >>Mike Frysinger wrote:
> >>
> >>>On 7/27/07, Robin Getz <[email protected]> wrote:
> >>>
> >>>>If there is a definite style or semantic preference that everyone
> >>>>should live
> >>>>with - does it make sense to put checks in checkpatch.pl to enforce it?
> >>>>
> >>>checkpatch.pl does not have enough semantic knowledge to know if the
> >>>thing being tested is a pointer ... dont know if the sparse utility
> >>>would be able to pick it out as i'm not familiar with what level that
> >>>thing runs at
> >>>
> >>Didn't he mean "x == NULL" > "!x"?
> >>
> >
> >i'm sure i understand your meaning of ">" ... are you saying that "x
> >== NULL" is greater (preferred) to "!x" or are you saying that "x ==
> >NULL" should be changed to "!x" ?
> >
> If I understood Robin correctly, he suggested that checkpatch.pl would
> tell to convert "x == NULL" to "!x", if that would be the preferred way.
> >i dont think the former case can be checked by checkpatch.pl, but the
> >latter certainly can ... but i'd be very skeptical you could get the
> >wider LKML audience to sign off one way or the other wrt to "x ==
> >NULL" vs "!x". you can certainly get people to sign off on "x == 0"
> >being wrong when x is a pointer.
> >
> I agree!
> BTW, too bad checkpatch.pl does not know the types, since it otherwise
> could check for the "x [=!]= 0"-thing.
About the only place that if (x != 0) is preferred to if (x) is cases
where the 0 value doesn't semantically correspond to false/off/disabled.
And that's basically thing that return 0 for success and negative errors.
--
Mathematics is the supreme nostalgia of our time.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
