Date: Fri, 15 Jan 2010 22:30:03 GMT From: Maxim Zakharov <maxime@maxime.net.ru> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/141682: [libc] [patch] Faster version of strncpy(3) Message-ID: <201001152230.o0FMU3KY071140@freefall.freebsd.org>
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The following reply was made to PR kern/141682; it has been noted by GNATS. From: Maxim Zakharov <maxime@maxime.net.ru> To: Jaakko Heinonen <jh@freebsd.org> Cc: bug-followup@freebsd.org Subject: Re: kern/141682: [libc] [patch] Faster version of strncpy(3) Date: Sat, 16 Jan 2010 01:26:03 +0300 Hi, if (length) { register size_t n = length / 8; register size_t r = (length % 8); register char *dst = dst0, *src = src0; if (r == 0) r = 8; else n++; this solves the problem. Thank you. On 1/15/10, Jaakko Heinonen <jh@freebsd.org> wrote: > > Hi, > > On 2009-12-17, Maxim Zakharov wrote: >> void * dps_strncpy(char *dst0, char *src0, size_t length) { >> if (length) { >> register size_t n = (length + 7) / 8; > > This won't work with length values larger than SIZE_MAX - 7 due to > integer overflow. > > -- > Jaakko > -- http://www.dataparksearch.org/
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