From: Eli Zaretskii <eliz@gnu.org>
To: Richard Copley <rcopley@gmail.com>
Cc: fabrice.popineau@gmail.com, emacs-devel@gnu.org
Subject: Re: Emacs-26 threads problem [win64]
Date: Sat, 14 Oct 2017 09:39:42 +0300 [thread overview]
Message-ID: <838tgejkr5.fsf@gnu.org> (raw)
In-Reply-To: <CAPM58og5dUcQ+9tD6u1WJb1S_OHFD7PBL1KFidYzntwxgCJfMg@mail.gmail.com> (message from Richard Copley on Fri, 13 Oct 2017 23:00:56 +0100)
> From: Richard Copley <rcopley@gmail.com>
> Date: Fri, 13 Oct 2017 23:00:56 +0100
> Cc: Fabrice Popineau <fabrice.popineau@gmail.com>, Emacs Development <emacs-devel@gnu.org>
>
> I think GCC's assumption that 0x40(%rbx) is 16-byte aligned derives
> through some arithmetic from the assumption that the stack was 16-byte
> aligned on entry. Can you try adding
> __attribute__ ((force_align_arg_pointer))
> to the thread function?
Thanks, we already tried that. It didn't work, because the offending
address doesn't come from stack, it comes from the heap.
(Nevertheless, the thread function should have this attribute on
Windows for the 32-bit builds to have the correct stack alignment. I
will do that soon. But Fabrice's build is 64-bit, where that
alignment is guaranteed by the ABI.)
next prev parent reply other threads:[~2017-10-14 6:39 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-09 19:48 Emacs-26 threads problem [win64] Fabrice Popineau
2017-10-10 6:25 ` Eli Zaretskii
2017-10-10 16:13 ` Fabrice Popineau
2017-10-10 16:30 ` Eli Zaretskii
2017-10-10 16:48 ` Eli Zaretskii
2017-10-10 18:57 ` Fabrice Popineau
2017-10-10 19:39 ` Eli Zaretskii
2017-10-10 19:58 ` Fabrice Popineau
2017-10-10 20:09 ` Eli Zaretskii
2017-10-10 20:14 ` Fabrice Popineau
2017-10-11 10:02 ` Eli Zaretskii
2017-10-13 18:52 ` Eli Zaretskii
2017-10-13 22:00 ` Richard Copley
2017-10-14 6:39 ` Eli Zaretskii [this message]
2017-10-13 22:28 ` Paul Eggert
2017-10-14 6:47 ` Eli Zaretskii
2017-10-14 8:05 ` Paul Eggert
2017-10-14 8:25 ` Eli Zaretskii
2017-10-14 9:28 ` Paul Eggert
2017-10-14 9:30 ` Andreas Schwab
2017-10-14 10:33 ` Eli Zaretskii
2017-10-14 11:31 ` Andreas Schwab
2017-10-14 12:18 ` Eli Zaretskii
2017-10-14 12:39 ` Andreas Schwab
2017-10-14 14:00 ` Eli Zaretskii
2017-10-14 22:51 ` Paul Eggert
2017-10-15 15:14 ` Eli Zaretskii
2017-10-15 15:39 ` Andreas Schwab
2017-10-15 16:30 ` Eli Zaretskii
2017-10-15 16:41 ` Stefan Monnier
2017-10-15 17:19 ` Eli Zaretskii
2017-10-15 16:47 ` Andreas Schwab
2017-10-14 9:26 ` Andreas Schwab
2017-10-14 9:31 ` Paul Eggert
2017-10-14 19:06 ` Fabrice Popineau
2017-10-10 18:55 ` Fabrice Popineau
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