From: NRK <nrk@disroot.org>
To: "Jₑₙₛ Gustedt" <jens.gustedt@inria.fr>
Cc: Rich Felker <dalias@libc.org>,
musl@lists.openwall.com, Mike Cui <cuicui@gmail.com>
Subject: Re: [musl] Potential bug in __res_msend_rc() wrt to union initialization.
Date: Tue, 19 Mar 2024 21:04:41 +0000 [thread overview]
Message-ID: <gjidsps4d2umlyfewoytiucpjb34i3zdcvd7txfovki45c5757@7d2gz6zlmipa> (raw)
In-Reply-To: <20240319173930.57b8eb30@inria.fr>
> actually the introduction of `{}` versus `{0}` in C23 was not meant to
> provide any difference in semantics, just to make the syntax nicer and
> consistent with C++.
Regardless of what the intention was, the reality is that it *does* have
semantic difference. Specifically, empty initialization `{}` benefits
from the default initialization rules, which specify zero-ing out the
padding bits whereas `{0}` doesn't guarantee that.
- NRK
next prev parent reply other threads:[~2024-03-19 21:04 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-18 19:56 Mike Cui
2024-03-18 21:34 ` Rich Felker
2024-03-18 22:22 ` NRK
2024-03-18 22:39 ` [musl] Potential bug in __res_msend_rc() wrt to union initialisation Thorsten Glaser
2024-03-19 0:01 ` [musl] Potential bug in __res_msend_rc() wrt to union initialization Mike Cui
2024-03-19 13:18 ` Rich Felker
2024-03-19 15:04 ` Mike Cui
2024-03-19 15:42 ` Rich Felker
2024-03-19 15:55 ` Mike Cui
2024-03-19 16:08 ` Rich Felker
2024-03-19 16:39 ` Jₑₙₛ Gustedt
2024-03-19 20:47 ` Thorsten Glaser
2024-03-21 10:58 ` Jₑₙₛ Gustedt
2024-03-21 16:41 ` Thorsten Glaser
2024-03-19 21:04 ` NRK [this message]
2024-03-19 21:36 ` Rich Felker
2024-03-20 17:11 ` NRK
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=gjidsps4d2umlyfewoytiucpjb34i3zdcvd7txfovki45c5757@7d2gz6zlmipa \
--to=nrk@disroot.org \
--cc=cuicui@gmail.com \
--cc=dalias@libc.org \
--cc=jens.gustedt@inria.fr \
--cc=musl@lists.openwall.com \
/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.
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/musl/
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 NNTP newsgroup(s).