From mboxrd@z Thu Jan  1 00:00:00 1970
From: "H.J. Lu" <hjl.tools-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: Re: The time(2) man page conflicts with glibc
Date: Wed, 16 Dec 2015 05:53:57 -0800
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To: "Michael Kerrisk (man-pages)" <mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Andreas Schwab <schwab-l3A5Bk7waGM@public.gmane.org>, libc-alpha <libc-alpha-9JcytcrH/bA+uJoB2kUjGw@public.gmane.org>, linux-man <linux-man-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Mike Frysinger <vapier-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org>, Zack Weinberg <zackw-VmQCmMdMyN0AvxtiuMwx3w@public.gmane.org>
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On Wed, Dec 16, 2015 at 5:38 AM, Michael Kerrisk (man-pages)
<mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> On 12/15/2015 03:17 PM, H.J. Lu wrote:
>> On Tue, Dec 15, 2015 at 6:16 AM, Andreas Schwab <schwab-l3A5Bk7waGM@public.gmane.org> wro=
te:
>>> In which way does it conflict?
>>
>> On error, ((time_t) -1) is returned, and errno is set appropriately.
>
>
> So, how would the following text be for the man page?
>
>     ERRORS
>        EFAULT t  points  outside your accessible address space.  On s=
ys=E2=80=90
>               tems where the C library time() wrapper  function  invo=
kes
>               an  implementation  provided by the vdso(7) (so that th=
ere
>               is no trap  into  the  kernel),  an  invalid  address  =
may
>               instead trigger a SIGSEGV signal.
>

time never sets errno.  You can't tell if it returns error when time
in libc.a is used.

--=20
H.J.
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