Messages in this thread | | | Date | Thu, 11 Apr 2013 11:19:43 +0300 | From | Dan Carpenter <> | Subject | Re: [PATCH] checkpatch: Warn on comparisons to true and false |
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On Wed, Apr 10, 2013 at 10:14:15PM -0400, Dave Jones wrote: > On Wed, Apr 10, 2013 at 03:57:51PM -0700, Andrew Morton wrote: > > On Tue, 09 Apr 2013 20:17:14 -0700 Joe Perches <joe@perches.com> wrote: > > > > > Comparisons of A to true and false are better written > > > as A and !A. > > > > > > Bleat a message on use. > > > > hm. I'm counting around 1,100 instances of "== true" and "== false". > > > > That's a lot of people to shout at. Is it really worthwhile? > > "foo==true" is a bit of a waste of space but I can't say that I find it > > terribly offensive. > > It would be interesting to see how many people have historically screwed > up and used (!a) when they mean (a) and vice versa, versus spelling > it out longform. I'd be surprised if the results weren't skewed > in favour of the more verbose form.
I see a the occasional reversed test in Smatch but normally these kind of bugs are detected with basic testing so they are rare.
regards, dan carpenter
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