On 08/13/2018 11:30 AM, Niels Möller wrote:
> Tim Rühsen <[email protected]> writes:
> 
>> #defines should not start with an underscore. C standards say this is
>> reserved (for system headers !?) and some static analyzers complain
>> about it.
> 
> Note that Nettle has violated this rule since the very beginnings. E.g,
> 
> #define _MD5_DIGEST_LENGTH 4
> 
> has been in md5.h since the initial commit (back in April 2001, around
> midnight). I haven't seen any reports about this causing problems.
> 
> I agree it's not quite right, and maybe we should clean this up at some
> point, replacing the leading underscore by nettle_internal_ (or maybe
> trailing underscore or nettle__ (double underscore). But not now.
> 
> Which static analyzers complain?

AFAIR it was lgtm.com complaining the header guards in libpsl (which I
meanwhile changed to not use leading underscores).

And you are right, I also have never experienced any problems with such
defines. Except that people keep complaining about not following the
standards ;-)

Getting automated static analyzers to 0 issues has the nice side-effect
that you can fail your CI / build when 1+ issue pops up. So any
contributor is (automatically) forced to deliver clean code.
That takes some burden from the maintainer and reduces iteration /
discussions about certain kind of 'cleanups'.

So nothing serious that needs to be addressed immediately.

Regards, Tim

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