Date: Tue, 13 Feb 2018 12:54:39 -0700 From: Ian Lepore <ian@freebsd.org> To: Ed Maste <emaste@freebsd.org> Cc: src-committers <src-committers@freebsd.org>, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r329237 - head/sys/libkern Message-ID: <1518551679.72050.4.camel@freebsd.org> In-Reply-To: <CAPyFy2Cckiz8iBzy664-%2BpVCPJhmxdD_JmzmEpSo5WFV-b8DEA@mail.gmail.com> References: <201802131917.w1DJHmso047463@repo.freebsd.org> <1518549829.85310.39.camel@freebsd.org> <CAPyFy2Cckiz8iBzy664-%2BpVCPJhmxdD_JmzmEpSo5WFV-b8DEA@mail.gmail.com>
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On Tue, 2018-02-13 at 14:43 -0500, Ed Maste wrote: > On 13 February 2018 at 14:23, Ian Lepore <ian@freebsd.org> wrote: > > > > On Tue, 2018-02-13 at 19:17 +0000, Ed Maste wrote: > > > > > > Author: emaste > > > Date: Tue Feb 13 19:17:48 2018 > > > New Revision: 329237 > > > URL: https://svnweb.freebsd.org/changeset/base/329237 > > > > > > Log: > > > libkern: use nul for terminating char rather than 0 > > > > > > Akin to the change made in r188080 for lib/libc/string/. > > > > > > Reported by: bde > > > Sponsored by: The FreeBSD Foundation > > There are many ways to spell 0. Why are we using something other > > than > > the simplest way? Is it a style rule thing, or is it portability- > > correctness, or what? > I made the change to improve consistency between lib/libc/string and > sys/libkern, which is what Bruce commented on some time ago. I don't > have a personal preference for 0 or '\0' but definitely believe that > if we have multiple, similar copies of a function they ought to avoid > gratuitous differences. (I'm happy to change both trees to 0 if > that's > preferred.) > Oh, I agree completely about consistancy being important. I just wanted to know whether I should try to remember to always use \0 because it's a rule or has some benefit I didn't know about. 20+ years ago I used to slavishly ensure I always used \0 when a char type was involved, just as a personal style thing. Then over time I came to the conclusion that "0 is 0 no matter how you spell it, so keep it simple" (except for pointers... even in c++ I've always used NULL). -- Ian
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