public inbox for glibc-bugs@sourceware.org
help / color / mirror / Atom feed
From: "goldstein.w.n at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/29839] [2.37 Regression] Wrong result in function __strncpy_avx2: 75 != 0
Date: Thu, 01 Dec 2022 22:42:41 +0000 [thread overview]
Message-ID: <bug-29839-131-7Og6BnEbiB@http.sourceware.org/bugzilla/> (raw)
In-Reply-To: <bug-29839-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=29839
--- Comment #2 from Noah Goldstein <goldstein.w.n at gmail dot com> ---
(In reply to H.J. Lu from comment #1)
> I am testing this:
>
> diff --git a/sysdeps/x86_64/multiarch/strncpy-avx2.S
> b/sysdeps/x86_64/multiarch/strncpy-avx2.S
> index e9afd8fbed..3e6350ce4a 100644
> --- a/sysdeps/x86_64/multiarch/strncpy-avx2.S
> +++ b/sysdeps/x86_64/multiarch/strncpy-avx2.S
> @@ -52,6 +52,10 @@
>
> .section SECTION(.text), "ax", @progbits
> ENTRY(STRNCPY)
> +# ifdef __ILP32__
> + /* Clear the upper 32 bits. */
> + movl %edx, %edx
> +# endif
> /* Filter zero length strings and very long strings. Zero
> length strings just return, very long strings are handled by
> just running rep stos{b|l} to zero set (which will almost
evex version will need the same treatment (assuming that works).
--
You are receiving this mail because:
You are on the CC list for the bug.
prev parent reply other threads:[~2022-12-01 22:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-01 22:24 [Bug string/29839] New: " hjl.tools at gmail dot com
2022-12-01 22:31 ` [Bug string/29839] " hjl.tools at gmail dot com
2022-12-01 22:42 ` goldstein.w.n at gmail dot com [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=bug-29839-131-7Og6BnEbiB@http.sourceware.org/bugzilla/ \
--to=sourceware-bugzilla@sourceware.org \
--cc=glibc-bugs@sourceware.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).