public inbox for gcc@gcc.gnu.org
 help / color / mirror / Atom feed
From: Po Lu <luangruo@yahoo.com>
To: "Arsen Arsenović" <arsen@aarsen.me>
Cc: Jonathan Wakely <jwakely.gcc@gmail.com>,  gcc@gcc.gnu.org
Subject: Re: More C type errors by default for GCC 14
Date: Thu, 11 May 2023 16:23:01 +0800	[thread overview]
Message-ID: <87fs83cm56.fsf@yahoo.com> (raw)
In-Reply-To: <868rdvnwqo.fsf@aarsen.me> ("Arsen =?utf-8?Q?Arsenovi=C4=87?= =?utf-8?Q?=22's?= message of "Thu, 11 May 2023 09:36:32 +0200")

Arsen Arsenović <arsen@aarsen.me> writes:

> None of these result in a whisper-level warning before a severe but
> difficult to detect breakage.

Really?  Why not run lint?

Besides, how is this any different from allowing people to write:

  extern int foo ();

or perhaps even

  extern int foo (struct bar *, long double _Complex);

when foo is something else?

> All of the features in question actively break programs (because they
> allow entirely wrong code to be emitted).

And they can also be used correctly.  GCC cannot tell the difference.
So why act as the judge, jury and executioner all rolled into one?

> It is.

It is not.

  reply	other threads:[~2023-05-11  8:23 UTC|newest]

Thread overview: 246+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-09 12:15 Florian Weimer
2023-05-09 14:16 ` Dave Blanchard
2023-05-09 15:03 ` David Edelsohn
2023-05-09 15:07   ` Sam James
2023-05-09 15:35     ` Dave Blanchard
2023-05-09 15:58       ` Jonathan Wakely
2023-05-09 16:26       ` Arsen Arsenović
2023-05-09 15:14   ` Jonathan Wakely
2023-05-09 15:22     ` Dave Blanchard
2023-05-09 16:38       ` Arsen Arsenović
2023-05-09 16:57         ` Eli Zaretskii
2023-05-09 17:05           ` Sam James
2023-05-09 18:55             ` Eli Zaretskii
2023-05-09 17:15           ` Jonathan Wakely
2023-05-09 19:04             ` Eli Zaretskii
2023-05-09 19:07               ` Jakub Jelinek
2023-05-09 19:22                 ` Eli Zaretskii
2023-05-09 20:13                   ` David Edelsohn
2023-05-09 20:21                     ` Arsen Arsenović
2023-05-10  2:38                       ` Eli Zaretskii
2023-05-10  8:36                         ` Arsen Arsenović
2023-05-10 11:52                           ` Eli Zaretskii
2023-05-10 11:56                             ` Jonathan Wakely
2023-05-10 12:25                               ` Eli Zaretskii
2023-05-10 12:30                                 ` Jonathan Wakely
2023-05-10 12:44                                   ` Eli Zaretskii
2023-05-15 12:28                         ` Richard Earnshaw (lists)
2023-05-15 20:17                           ` Eric Gallager
2023-05-16  7:05                             ` Florian Weimer
2023-05-16 15:56                               ` Jason Merrill
2023-05-09 20:40                     ` Jonathan Wakely
2023-05-09 22:27                       ` David Edelsohn
2023-05-09 22:37                         ` Joel Sherrill
2023-05-09 22:45                           ` Jonathan Wakely
2023-05-10 10:40                             ` Eric Gallager
2023-05-10 10:45                               ` Sam James
2023-05-10 10:56                                 ` Neal Gompa
2023-05-10 12:06                                   ` Eli Zaretskii
2023-05-10 12:10                                     ` Neal Gompa
2023-05-10 12:41                                       ` Eli Zaretskii
2023-05-10 10:48                               ` Jonathan Wakely
2023-05-10 10:51                                 ` Jonathan Wakely
2023-05-10 12:00                               ` Eli Zaretskii
2023-05-10 12:42                                 ` Sam James
2023-05-10 15:10                             ` Joel Sherrill
2023-05-10 15:14                               ` Jakub Jelinek
2023-05-10 16:36                                 ` Joel Sherrill
2023-05-10 16:44                                   ` Jakub Jelinek
2023-05-10 17:05                                   ` Jonathan Wakely
2023-05-10 18:37                             ` James K. Lowden
2023-05-10 23:26                               ` Jonathan Wakely
2023-05-11 18:47                                 ` Jason Merrill
2023-05-10 23:33                               ` Sam James
2023-05-11  5:48                               ` Eli Zaretskii
2023-05-11  2:28                             ` Po Lu
2023-05-11  2:09                       ` Po Lu
2023-05-11  2:14                         ` Sam James
2023-05-11  2:23                           ` Po Lu
2023-05-11  3:14                             ` Eli Schwartz
2023-05-11  3:56                               ` Po Lu
2023-05-11  4:46                                 ` Eli Schwartz
2023-05-11  4:49                                   ` Eli Schwartz
2023-05-11  6:23                                     ` Po Lu
2023-05-11  6:18                                   ` Po Lu
2023-05-11 22:41                                     ` Eli Schwartz
2023-05-12  2:08                                       ` Po Lu
2023-05-12  3:07                                         ` Eli Schwartz
2023-05-12  5:57                                           ` Po Lu
2023-05-12 11:05                                             ` Gabriel Ravier
2023-05-12 13:53                                               ` Po Lu
2023-05-12 14:03                                                 ` Jonathan Wakely
2023-05-14 12:35                                                 ` Mark Wielaard
2023-05-12 11:48                                             ` Is the GNUC dialect anything that GCC does when given source code containing UB? (Was: More C type errors by default for GCC 14) Eli Schwartz
2023-05-12 13:07                                               ` Is the GNUC dialect anything that GCC does when given source code containing UB? Po Lu
2023-05-12  6:56                                           ` More C type errors by default for GCC 14 Eli Zaretskii
2023-05-12  7:28                                             ` Jonathan Wakely
2023-05-12 10:36                                               ` Eli Zaretskii
2023-05-12 13:19                                               ` Po Lu
2023-05-12 13:25                                                 ` Gabriel Ravier
2023-05-13  0:45                                                   ` Po Lu
2023-05-13  5:30                                                     ` Thomas Koenig
2023-05-13  5:53                                                       ` Po Lu
2023-05-14  5:10                                                         ` Eli Schwartz
2023-05-14  5:38                                                           ` Po Lu
2023-05-14  9:46                                                             ` David Brown
2023-05-14 10:21                                                               ` Jonathan Wakely
2023-05-14 10:23                                                                 ` Jonathan Wakely
2023-05-14  5:08                                                     ` Eli Schwartz
2023-05-14  5:28                                                       ` Po Lu
2023-05-14  5:56                                                         ` Eli Schwartz
2023-05-14 11:55                                                           ` Po Lu
2023-05-14 12:22                                                             ` Arsen Arsenović
2023-05-15  1:05                                                               ` Po Lu
2023-05-14  6:03                                                         ` Eli Schwartz
2023-05-14  8:47                                                         ` Jonathan Wakely
2023-05-14 12:05                                                           ` Po Lu
2023-05-14 12:48                                                             ` Nicholas Vinson
2023-05-14 10:29                                                         ` David Brown
2023-05-12 15:51                                                 ` Jason Merrill
2023-05-17 10:06                                                   ` Florian Weimer
2023-05-12 11:26                                         ` David Brown
2023-05-11  6:24                                   ` Eli Zaretskii
2023-05-11 22:43                                     ` Eli Schwartz
2023-05-12  2:38                                       ` Po Lu
2023-05-12  2:55                                         ` Jason Merrill
2023-05-12  6:01                                           ` Po Lu
2023-05-12  6:40                                             ` Jonathan Wakely
2023-05-12 13:23                                               ` Po Lu
2023-05-12 10:49                                             ` Pedro Alves
2023-05-12 13:26                                               ` Po Lu
2023-05-12 11:55                                             ` Eli Schwartz
2023-05-12 13:54                                               ` Po Lu
2023-05-12  6:49                                           ` Eli Zaretskii
2023-05-12  2:56                                         ` Sam James
2023-05-12  6:03                                           ` Po Lu
2023-05-12  3:06                                         ` Sam James
2023-05-12  6:25                                       ` Eli Zaretskii
2023-05-12 11:23                                         ` Gabriel Ravier
2023-05-11  6:12                               ` Eli Zaretskii
2023-05-11  7:04                                 ` Jonathan Wakely
2023-05-11 22:30                                 ` Eli Schwartz
2023-05-11 22:35                                   ` Sam James
2023-05-12  2:40                                     ` Po Lu
2023-05-12  2:52                                       ` Sam James
2023-05-12  5:32                                         ` Po Lu
2023-05-12  2:39                                   ` Po Lu
2023-05-12  3:18                                     ` Eli Schwartz
2023-05-12  6:17                                   ` Eli Zaretskii
2023-05-11  7:59                         ` David Brown
2023-05-09 21:00                     ` Thomas Koenig
2023-05-09 21:17                       ` Arsen Arsenović
2023-05-10 13:57                       ` Florian Weimer
2023-05-10 11:00                     ` David Brown
2023-05-11 10:49                       ` James K. Lowden
2023-05-11  1:38                     ` Po Lu
2023-05-11  1:43                       ` Sam James
2023-05-11  2:20                         ` Po Lu
2023-05-09 20:57                   ` Florian Weimer
2023-05-10  2:33                     ` Eli Zaretskii
2023-05-10  8:04                       ` Jonathan Wakely
2023-05-10  8:46                         ` Richard Biener
2023-05-10 12:26                           ` Florian Weimer
2023-05-10 11:30                         ` Eli Zaretskii
2023-05-10 12:03                           ` Jakub Jelinek
2023-05-10 12:36                             ` Eli Zaretskii
2023-05-10 12:41                               ` Gabriel Ravier
2023-05-10 14:14                                 ` Eli Zaretskii
2023-05-10 14:22                                   ` Jakub Jelinek
2023-05-10 15:30                                     ` Eli Zaretskii
2023-05-10 16:02                                       ` Jakub Jelinek
2023-05-10 16:31                                         ` Eli Zaretskii
2023-05-10 16:33                                           ` Richard Biener
2023-05-10 16:57                                             ` Eli Zaretskii
2023-05-10 17:08                                           ` Joseph Myers
2023-05-10 18:18                                             ` Eli Zaretskii
2023-05-12 15:02                                             ` Florian Weimer
2023-05-12 17:52                                               ` Florian Weimer
2023-05-12 17:55                                                 ` Gabriel Ravier
2023-05-12 18:00                                                   ` Florian Weimer
2023-05-12 18:08                                                   ` Alexander Monakov
2023-05-12 18:14                                                     ` Florian Weimer
2023-05-15 12:51                                                       ` Michael Matz
2023-05-16  8:55                                                         ` Florian Weimer
2023-05-16 10:39                                                           ` Alexander Monakov
2023-05-16 11:01                                                             ` Jakub Jelinek
2023-05-16 11:09                                                               ` Jonathan Wakely
2023-05-16 11:15                                                               ` Florian Weimer
2023-05-12 19:44                                               ` Joseph Myers
2023-05-12 20:43                                                 ` Florian Weimer
2023-05-12 20:18                                               ` Jason Merrill
2023-05-12 20:57                                                 ` Florian Weimer
2023-05-12 21:20                                                   ` Sam James
2023-05-12 21:21                                               ` Sam James
2023-05-12 21:37                                                 ` Florian Weimer
2023-05-12 21:47                                                   ` Sam James
2023-05-12 21:59                                                     ` Florian Weimer
2023-05-10 15:58                                   ` David Brown
2023-05-10 16:28                                     ` Eli Zaretskii
2023-05-11  6:52                                       ` David Brown
2023-05-11  7:39                                         ` Eli Zaretskii
2023-05-10 14:31                             ` Thomas Koenig
2023-05-10 15:37                               ` Eli Zaretskii
2023-05-11  2:38                         ` Po Lu
2023-05-11  7:38                           ` Arsen Arsenović
2023-05-11  8:31                             ` Po Lu
2023-05-11  8:44                               ` Arsen Arsenović
2023-05-11  9:28                                 ` Po Lu
2023-05-11 21:10                                   ` Arsen Arsenović
2023-05-12  1:41                                     ` Po Lu
2023-05-11 10:35                                 ` Eli Zaretskii
2023-05-11 19:25                                   ` Arsen Arsenović
2023-05-12  2:36                                     ` Po Lu
2023-05-12 12:30                                       ` Gabriel Ravier
2023-05-12 13:56                                         ` Po Lu
2023-05-12  7:53                                     ` Eli Zaretskii
2023-05-12  8:15                                       ` Jakub Jelinek
2023-05-12 10:40                                         ` Eli Zaretskii
2023-05-12  8:45                                       ` Christian Groessler
2023-05-12 10:14                                         ` Jonathan Wakely
2023-05-12  9:11                                       ` Thomas Koenig
2023-05-11  8:53                               ` Jonathan Wakely
2023-05-11  9:29                                 ` Po Lu
2023-05-10  8:49               ` David Brown
2023-05-10 11:37                 ` Eli Zaretskii
2023-05-10 11:49                   ` Jonathan Wakely
2023-05-10 12:22                     ` Eli Zaretskii
2023-05-10 13:30                       ` David Brown
2023-05-10 14:39                         ` Eli Zaretskii
2023-05-10 15:21                           ` Paul Koning
2023-05-10 16:20                           ` David Brown
2023-05-10 16:48                             ` Eli Zaretskii
2023-05-10 12:32                   ` Sam James
2023-05-10 12:47                     ` Eli Zaretskii
2023-05-09 19:33           ` Arsen Arsenović
2023-05-09 15:25     ` David Edelsohn
2023-05-11  1:25     ` Po Lu
2023-05-11  1:30       ` Sam James
2023-05-11  1:33       ` Sam James
2023-05-11  2:18         ` Po Lu
2023-05-11  6:44           ` Jonathan Wakely
2023-05-11  8:32             ` Po Lu
2023-05-11  8:52               ` Jonathan Wakely
2023-05-11  7:36       ` Arsen Arsenović
2023-05-11  8:23         ` Po Lu [this message]
2023-05-09 18:22   ` Florian Weimer
2023-05-11 21:32     ` Segher Boessenkool
2023-05-09 15:16 ` Richard Biener
2023-05-09 16:05   ` Jakub Jelinek
2023-05-09 16:11     ` Sam James
2023-05-09 16:13     ` David Edelsohn
     [not found]       ` <BBE9950C-28AA-4A1C-A4C5-7F486538004E@gmail.com>
2023-05-09 16:44         ` Florian Weimer
2023-05-09 16:58           ` Ian Lance Taylor
2023-05-09 17:08           ` Jason Merrill
2023-05-09 17:16             ` Sam James
2023-05-09 16:59   ` Florian Weimer
2023-05-09 17:07     ` Sam James
2023-05-09 17:35       ` Florian Weimer
2023-05-11 15:21 ` Peter0x44
2023-05-12  9:33 ` Martin Jambor
2023-05-12 12:30   ` Jakub Jelinek
2023-05-15 12:46     ` Michael Matz
2023-05-15 13:14     ` Richard Earnshaw (lists)
2023-05-10 12:41 Marcin Jaczewski
2023-05-10 14:19 ` Eli Zaretskii
2023-05-10 13:10 Basile Starynkevitch
2023-05-10 14:20 ` David Brown

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=87fs83cm56.fsf@yahoo.com \
    --to=luangruo@yahoo.com \
    --cc=arsen@aarsen.me \
    --cc=gcc@gcc.gnu.org \
    --cc=jwakely.gcc@gmail.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.
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).