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To: man-jp@jp.FreeBSD.org
In-reply-to: Your message of "Sat, 22 Dec 2001 01:22:07 PST."
             <1021.1009012927@c9795-a.vncvr1.wa.home.com>
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Date: Sun, 23 Dec 2001 00:40:31 +0900
From: NOKUBI Hirotaka <nokubi@ff.iij4u.or.jp>
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Subject: [man-jp 3882] Re: NUL
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In message <1021.1009012927@c9795-a.vncvr1.wa.home.com>, Norihiro Kumagai write
s:
>
>> > $B!{(B if (p == NULL)
>> >    $B$h$j$O(B
>> >    if (p == (char *)0)
>> >    $B$NJ}$,NI$$(B
>> > $B$H$+8@$C$F$$$k?M$b5o$k$h$&$K;W$&$N$G$9$,!"$3$l$C$F$I$&$J$s$G$7$g$&(B?
>
>p $B$,(B (char *) $B$G$J$$$H$-$O!"(Bp == (char *)0 $B$O8m$j(B(undefined behavior)$B!#(B
>p $B$,$I$N7?$N%]%$%s%?$G$b(B p == NULL $B$O@5$7$$!#(B
>$B$N$G!"!V$3$l$C$F$h$/$J$$$G$9!#!W(B

$B$O$7$g$C$F=q$$$F$7$^$$$^$7$?$,!"$b$A$m$s(B p $B$N7?$K9g$o$;$F(B 0 $B$r(B
$B%-%c%9%H$9$k$N$,NI$$$H8@$C$F$$$?$H;W$$$^$9!#>e5-Nc$O(B p $B$,(B char * $B$G(B
$B$"$k$H$$$&A0Ds$G=q$$$F$$$^$7$?!#$3$N>l9g$ONI$$(B?

>$B$3$l$O0c$&!#(BC $B8@8l$G$"$k8B$j!"(BNULL $B$ODj?t<0(B 0 $B$G$9!#(B
>NULL $B$N:G$b$"$j$=$&$JDj5A$O(B

$B$&$s$&$s!#$=$&$G$9$h$M!#(B

>#define NULL 0
>
>$B$G$9!#$G!"(B($B!V(Bnull pointer $B$,(B 0 $B$G$J$$!W(BOS $B$G(B)$B%]%$%s%?9=J8$GDj?t(B 0 $B$r8+(B
>$B$?;~$K!"%3%s%Q%$%i$O(B all bit zero $B$G$J$$2?$i$+$NDj?t$r@8@.$7$^$9!#(B

$B$"!"$J$!$k$[$I!#D9G/$NFf$,I92t$7$^$7$?$G$9!#(B

----
NOKUBI Hirotaka
Fingerprint20 = DEBC 0793 7CD6 92F1 0A1F  A792 9E2F EEEE A41B 171D
