Date: Thu, 26 Apr 2001 08:24:48 +1000 (EST) From: Bruce Evans <bde@zeta.org.au> To: Peter Pentchev <roam@orbitel.bg> Cc: arch@FreeBSD.ORG Subject: Re: gid_t vs. plain int Message-ID: <Pine.BSF.4.21.0104260813260.27478-100000@besplex.bde.org> In-Reply-To: <20010425183640.C54687@ringworld.oblivion.bg>
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On Wed, 25 Apr 2001, Peter Pentchev wrote: > Is there a reason that struct group in <group.h> does not define 'gr_gid' > as a gid_t value, but as a plain int? This makes all kinds of things Historical reasons, and because wollman still hasn't committed his header cleanups which fix this and many other related problems. > go berserk with gcc -Wall -W, and causes dozens of (totally unneeded) > casts. The casts might be needed to support K&R compilers on systems with sizeof(gid_t) < sizeof(int), but mostly make things worse by hiding bugs. > Is there some standard that says pw_gid is gid_t, but gr_gid is int? POSIX.1-1990 says that both are gid_t. BTW, the kernel still uses int for gids in many places, e.g., kern/syscalls.master says that chown(2) takes an "int gid" arg. This depends on various type puns to work. Similarly for many other syscall args. Bruce To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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