Date: Tue, 12 Mar 1996 11:25:58 -0500 From: "Garrett A. Wollman" <wollman@lcs.mit.edu> To: Bruce Evans <bde@zeta.org.au> Cc: current@freebsd.org Subject: Re: cvs commit: src/sys/sys conf.h Message-ID: <9603121625.AA07546@halloran-eldar.lcs.mit.edu> In-Reply-To: <199603120520.QAA31894@godzilla.zeta.org.au> References: <199603120520.QAA31894@godzilla.zeta.org.au>
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<<On Tue, 12 Mar 1996 16:20:43 +1100, Bruce Evans <bde@zeta.org.au> said: >> (struct mbuf *)cmd, (struct mbuf *)data, (struct mbuf *)0)); > Actually, this is another point in favor of not making the ioctl cmd > field long. Longs are less likely to fit in pointers than ints. The > above would certainly fail for 16-bit pointers. So what? We are never going to have to deal with this situation. The only situations of relevance are: 32-bit int, 32-bit long, 32-bit pointer (all 32-bit systems) 32-bit int, 64-bit long, 64-bit pointer (Alpha) 64-bit int, 64-bit long, 64-bit pointer (Cray? ...will happen some day) It works fine in the first case, and it avoids a GCC warning in the second case. Sounds like the right thing to me. -GAWollman -- Garrett A. Wollman | Shashish is simple, it's discreet, it's brief. ... wollman@lcs.mit.edu | Shashish is the bonding of hearts in spite of distance. Opinions not those of| It is a bond more powerful than absence. We like people MIT, LCS, ANA, or NSA| who like Shashish. - Claude McKenzie + Florent Vollant
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