From: Paul Eggert <eggert@cs.ucla.edu>
To: Albert ARIBAUD <albert.aribaud@3adev.fr>
Cc: libc-alpha@sourceware.org
Subject: Re: [PATCH 1/1] Y2038: add function __difftime64
Date: Mon, 25 Jun 2018 23:56:00 -0000 [thread overview]
Message-ID: <6c6c0111-572d-538a-e9e7-26b43b44d6c4@cs.ucla.edu> (raw)
In-Reply-To: <20180626003245.023eb716@athena>
On 06/25/2018 03:32 PM, Albert ARIBAUD wrote:
> I replaced the original 32-bit difftime with a wrapper
> around the 64-bit time; and in both cases, there were two functions, on
> for each time size.
Yes, and all this is in the patch you posted in
<https://www.sourceware.org/ml/libc-alpha/2018-06/msg00605.html>. What
I'm not understanding is how the functions it defines (__difftime64 and
__difftime on 32-bit hosts, and just __difftime on 64-bit hosts)
interoperate the with user-defined macro (is it still _TIME_BITS? I
can't recall) that specifies whether the user wants time_t is 64 or 32
bits, and how they interoperate with the macro that Joseph Myers
suggested was needed by the system to say whether a 32-bit time_t
variant is supported.
In short, I'm still missing the bigger picture here.
> Since you want the changes in gnulib first, then I suspect I should
> provide branches above gnulib as well as above glibc? If so, what
> would you recommend as a good source on setting up a build and test
> setup for gnulib, similar to build-many-glibcs.py is for glibc?
>
Yes, it would be helpful to have this in Gnulib too. The basic idea is
that Gnulib and glibc sources should be as close to each other as
possible; preferably identical. You can build and test a Gnulib module
by running './gnulib-tool --test modulename'; run './gnulib-tool --help'
for more.
next prev parent reply other threads:[~2018-06-25 23:56 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-20 12:14 [PATCH 0/1] Y2038 support batch 3 - difftime Albert ARIBAUD (3ADEV)
2018-06-20 12:14 ` [PATCH 1/1] Y2038: add function __difftime64 Albert ARIBAUD (3ADEV)
2018-06-20 19:29 ` Paul Eggert
2018-06-20 20:55 ` Albert ARIBAUD
2018-06-21 21:17 ` Paul Eggert
2018-06-25 22:32 ` Albert ARIBAUD
2018-06-25 23:56 ` Paul Eggert [this message]
2018-06-27 11:03 ` Albert ARIBAUD
2018-07-05 18:36 ` Albert ARIBAUD
2018-07-05 19:13 ` Zack Weinberg
2018-07-05 19:40 ` Paul Eggert
2018-07-05 20:38 ` Albert ARIBAUD
2018-07-05 21:17 ` Bruno Haible
2018-07-06 5:06 ` Albert ARIBAUD
2018-07-06 22:54 ` Paul Eggert
2018-07-06 22:40 ` Paul Eggert
2018-07-06 22:37 ` Paul Eggert
2018-07-17 20:40 ` Joseph Myers
2018-07-05 20:50 ` time_t in gnulib Bruno Haible
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