Re: Compilation warnings in net_db.c

[Eli Zaretskii]

> From: Andy Wingo <address@hidden>
> Cc: address@hidden
> Date: Sat, 16 Jul 2016 10:53:37 +0200
> 
> >    net_db.c:454:20: warning: 'sym_ai_passive' defined but not used 
> > [-Wunused-variable]
> >     SCM_VARIABLE_INIT (sym_ai_passive, "AI_PASSIVE",
> >                    ^
> >    ../libguile/snarf.h:82:29: note: in definition of macro 'SCM_SNARF_HERE'
> >     #  define SCM_SNARF_HERE(X) X
> >                             ^
> >    net_db.c:454:1: note: in expansion of macro 'SCM_VARIABLE_INIT'
> >     SCM_VARIABLE_INIT (sym_ai_passive, "AI_PASSIVE",
> >     ^
> >
> > AFAICT, these SCM_VARIABLE_INIT calls wind up declaring static
> > variables that are not used in net_db.c.  Is that what's supposed to
> > happen, or do I need to look more into this?  Do people get these
> > warnings on Posix platforms?
> 
> Oddly I don't get these warnings, but perhaps I should.

Which version of GCC do you use?  I have 5.3.0 here, and its quite
picky, given the warning options we use.

> I reworked this file to not create these variables.  Thanks for the
> report :)

Thanks.