archive mirror
 help / color / mirror / Atom feed
From: Linus Torvalds <>
To: Joe Perches <>
Cc: Louis Taylor <>,
	David Howells <>,,
	Linux List Kernel Mailing <>,
Subject: Re: [PATCH] afs: use correct format characters
Date: Thu, 11 Apr 2019 09:31:33 -0700	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On Wed, Apr 10, 2019 at 4:01 PM Joe Perches <> wrote:
> I really think this clang message should be ignored.


> It's really unnecessary as every vararg argument smaller
> than int size is already promoted to int.

Exactly. It's a pointless warning, making for more complex code, and
making people remember esoteric printf format details that have no
reason for existing.

The "h" and "hh" things should never be used. The only reason for them
being used if if you have an "int", but you want to print it out as a
"char" (and honestly, that is a really bad reason, you'd be better off
just using a proper cast to make the code more obvious).

So if what you have a "char" (or unsigned char) you should always just
print it out as an "int", knowing that the compiler already did the
proper type conversion.


  reply	other threads:[~2019-04-11 16:31 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-10 22:03 Louis Taylor
2019-04-10 22:27 ` Nick Desaulniers
2019-04-10 22:41 ` [PATCH v2] " Louis Taylor
2019-04-10 22:52   ` Nick Desaulniers
2019-04-12 15:48     ` David Laight
2019-04-10 23:00 ` [PATCH] " Joe Perches
2019-04-11 16:31   ` Linus Torvalds [this message]
2019-04-11 17:41     ` Nick Desaulniers

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:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to='' \ \ \ \ \ \ \ \
    --subject='Re: [PATCH] afs: use correct format characters' \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

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).