Date: Wed, 7 May 2008 11:11:39 -0400 From: John Baldwin <jhb@freebsd.org> To: Alfred Perlstein <alfred@freebsd.org> Cc: src-committers@freebsd.org, cvs-all@freebsd.org, cvs-src@freebsd.org Subject: Re: 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 putchar.c xprintf.c Message-ID: <200805071111.39938.jhb@freebsd.org> In-Reply-To: <20080507064013.GU32532@elvis.mu.org> References: <200805051603.m45G3rrN089219@repoman.freebsd.org> <200805051637.43073.jhb@freebsd.org> <20080507064013.GU32532@elvis.mu.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wednesday 07 May 2008 02:40:13 am Alfred Perlstein wrote: > * John Baldwin <jhb@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 it to > > another type, cast 0 to a valid pointer to the new typedef'd type, and do a > > 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 > autoconf? 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. -- John Baldwin
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200805071111.39938.jhb>