cvs commit: src/include stdio.h src/lib/libc/stdio clrerr.c
feof.c ferror.c fileno.c getc.c getchar.c local.h putc.c
jhb at freebsd.org
Wed May 7 17:28:50 UTC 2008
On Wednesday 07 May 2008 02:40:13 am Alfred Perlstein wrote:
> * John Baldwin <jhb at freebsd.org> [080505 13:47] wrote:
> > On Monday 05 May 2008 03:24:17 pm Peter Jeremy wrote:
> > > On Mon, May 05, 2008 at 02:59:28PM -0400, John Baldwin wrote:
> > > >On Monday 05 May 2008 02:40:03 pm Alfred Perlstein wrote:
> > > >> I'm _not_ objecting, just interested in why.
> > > >>
> > > >> Any references to discussions on this? Are we now safe for
> > > >> future compat or something?
> > > >
> > > >Having FILE be opaque broke just about every 'configure' script on the
> > > >planet. :(
> > >
> > > Either autoconf and friends are _intended_ as impediments to
> > > portability or they are completely broken by design.
> > It appears that autoconf only believes a type is real if you can typedef
> > another type, cast 0 to a valid pointer to the new typedef'd type, and do
> > sizeof() of the typdef'd type. The last is where having an opaque type
> > breaks down for scripts that want to make sure FILE is a real type.
> Oh c'mon! we're going to revert this needed fix just because of
Pretty much. It appears that FILE has been public for so long that there is a
lot of code that assumes it can use it.
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