tisdag den 21 september 2010 klockan 12:32 skrev Simon Josefsson detta:
> Mats Erik Andersson <mats.anders...@gisladisker.se> writes:
>
> > Without the proposed change, OpenBSD comes to a halt with a cryptic
> > message about clashing prototypes for free(3). The explanation is
> > that OpenBSD uses
> >
> > ### /usr/include/net/if.h
> >
> > #define if_freenameindex(x) free(x)
> >
> > The corresponding function in GNU/Linux is a true function!
>
> Interesting. According to POSIX:
>
> http://www.opengroup.org/onlinepubs/9699919799/functions/if_freenameindex.html
>
> It should be a real function. Could you report this as a OpenBSD bug?
>
> It does sounds as if this is something that gnulib could offer a working
> replacement for, instead of InetUtils using a hack. It looks like an
> OpenBSD bug that would affect other applications too.
>
> The exact compile error would help in understanding why things fail
> here. Could you create a small example that reproduce the problem?
> E.g. something like:
>
> #include <net/if.h>
> int main (void) { if_freenameindex ((void*)0); }
>
> or something like that? And then quote the compile error.
Well, no compile error will arise in such a minimal program.
The problem is rather that the macro definition in OpenBSD
will affect the two files
inetutils/ifconfig/if_index.h
inetutils/ifconfig/if_index.c
into replacing every "if_freenameindex" with "free", thus causing
the most unpleasant namespace collisions. I will send a reminder to
bug-gnulib to be safe, though.
Mats E A
