Date: Wed, 4 Dec 2002 12:05:10 -0500 (EST) From: Garrett Wollman <wollman@lcs.mit.edu> To: David Malone <dwmalone@maths.tcd.ie> Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/usr.bin/unifdef unifdef.1 Message-ID: <200212041705.gB4H5ATC048432@khavrinen.lcs.mit.edu> In-Reply-To: <20021204150932.GA47420@walton.maths.tcd.ie> References: <200212041442.gB4EgnQL042381@repoman.freebsd.org> <20021204150932.GA47420@walton.maths.tcd.ie>
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<<On Wed, 4 Dec 2002 15:09:32 +0000, David Malone <dwmalone@maths.tcd.ie> said: > I always though it was the NULL pointer, but the nul character, > as given in the ascii man page? You've got that backwards: it's a (not the) null pointer, but the (one and only) NUL character. See ISO 9899 and ANSI X3.64. However, the spelling of NUL (ASCII character zero) is too close to the C macro NULL (which expands to a null pointer constant) and so we do not normally use it. The C Standard, which is character-set independent, also does not use the ASCII name; C merely requires that there be a character with value zero which can safely be used as a string terminator, and likewise for wide characters. -GAWollman To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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