From: Florian Weimer <fweimer@redhat.com>
To: "Arsen Arsenović" <arsen@aarsen.me>
Cc: gcc-patches@gcc.gnu.org, gcc@gcc.gnu.org,
Joseph Myers <joseph@codesourcery.com>,
Marek Polacek <polacek@redhat.com>
Subject: Re: C2x features status
Date: Fri, 21 Oct 2022 21:55:53 +0200 [thread overview]
Message-ID: <87r0z16jee.fsf@oldenburg.str.redhat.com> (raw)
In-Reply-To: <7452271.dsUahkEHV4@bstg> ("Arsen =?utf-8?Q?Arsenovi=C4=87=22?= =?utf-8?Q?'s?= message of "Fri, 21 Oct 2022 21:29:24 +0200")
* Arsen Arsenović:
> On Friday, 21 October 2022 21:14:54 CEST Marek Polacek via Gcc wrote:
>> commit 0a91bdaf177409a2a5e7895bce4f0e7091b4b3ca
>> Author: Joseph Myers <joseph@codesourcery.com>
>> Date: Wed Sep 7 13:56:25 2022 +0000
>>
>> c: New C2x keywords
>>
>> which says:
>>
>> As with the removal of unprototyped functions, this change has a
>> high risk of breaking some old code and people doing GNU/Linux
>> distribution builds may wish to see how much is broken in a build
>> with a -std=gnu2x default.
>
> It already does break a lot. See https://bugs.gentoo.org/870412
> (comments go over the details). I was intending on giving this issue a
> proper look in the GNU toolchain frame of reference, but never got
> around to it (and I kinda knocked priority down after managing to
> configure properly once IIRC).
That's the implicit function declaration/implicit int change. This
won't happen in GCC 13, it's too late for that. I tried to make this
change a couple of years in Fedora, and just flipping the compiler flag
Does Not Work. I hope to get there in time for GCC 14.
Thank you for sharing the Gentoo tracker. Maybe we can reuse some
patches from there and contribute ours. I trust Gentoo aims to upstream
patches as they become available? Unfortunately, I expect that a lot of
these issues will be in packages that don't have an active upstream
anymore, which makes sharing patches more challenging. In other cases,
we'll just build with -std=gnu89 (e.g. unzip
<https://bugzilla.redhat.com/show_bug.cgi?id=1750694>, it has
configure-style checking implemented without autoconf).
Thanks,
Florian
next prev parent reply other threads:[~2022-10-21 19:55 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-20 17:30 Joseph Myers
2022-10-21 18:31 ` Florian Weimer
2022-10-21 19:14 ` Marek Polacek
2022-10-21 19:29 ` Arsen Arsenović
2022-10-21 19:55 ` Florian Weimer [this message]
2022-10-21 20:26 ` Arsen Arsenović
2022-10-21 21:11 ` Joseph Myers
2022-10-21 22:13 ` Florian Weimer
2022-10-21 22:19 ` Joseph Myers
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