From: Rich Felker <dalias@libc.org>
To: musl@lists.openwall.com
Subject: Re: Final (?) time64 proposal
Date: Wed, 31 Jul 2019 01:27:49 -0400 [thread overview]
Message-ID: <20190731052749.GA9017@brightrain.aerifal.cx> (raw)
In-Reply-To: <20190729211154.GV1506@brightrain.aerifal.cx>
On Mon, Jul 29, 2019 at 05:11:54PM -0400, Rich Felker wrote:
> On Wed, Jul 24, 2019 at 01:31:42AM -0400, Rich Felker wrote:
> > My plan to go ahead looks like:
> >
> > [...]
> > - struct shmid_ds, msqid_ds, semid_ds layout kept, extended with
> > 64-bit time_t's on the ends
>
> This looks like the unnecessarily painful course of action. I worked
> out a grid of all the existing archs' quirks, and except for mips and
> mipsn32, all archs admit a solution that's just endian-swapping the
> time_t members in-place.
This turned out to be false, because the alignment is wrong. Almost
all the time_t's would have to start at offsets that are 4 mod 8. So
in-place use is out, and these structs will all get extended at the
end, as originally planned.
Still using new cmd numbers instead of redirecting symbols.
Rich
prev parent reply other threads:[~2019-07-31 5:27 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-24 5:31 Rich Felker
2019-07-25 5:18 ` Rich Felker
2019-07-25 20:01 ` Rich Felker
2019-07-27 3:41 ` Rich Felker
2019-07-29 21:11 ` Rich Felker
2019-07-29 21:26 ` Rich Felker
2019-07-31 5:27 ` Rich Felker [this message]
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