From: Gerald Pfeifer <gerald@pfeifer.com>
To: Florian Weimer <fweimer@redhat.com>
Cc: gcc-patches@gcc.gnu.org
Subject: Re: [PATCH] Notes on the warnings-as-errors change in GCC 14
Date: Thu, 15 Feb 2024 23:58:43 +0100 (CET) [thread overview]
Message-ID: <6702871e-689f-67ac-a761-b013c6aa9f0b@pfeifer.com> (raw)
In-Reply-To: <87edddaeac.fsf@oldenburg.str.redhat.com>
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On Thu, 15 Feb 2024, Florian Weimer wrote:
>> Naive questions: Can definitions really be prototypes (in C)?
> Yes, I think so: definitions can be declarations, and function
> prototypes are declarations. The standard uses the phrase “function
> definition that does not include a function prototype declarator”.
> Should I write “old-style function definition” instead?
I think that would have helped me (as a not too much of a language
expert). Only make that change if you think it makes sense, though.
>>> +GCC will type-check function arguments after that, potentially
>>> +requiring further changes. (Previously, the function declaration was
>>> +treated as not having no prototype.)
>> That second sentence uses double negation, which logically is the same as
>> just the original statement.
> Other reviews suggests to change it to “not having [a] prototype”.
Ah, let's use that then.
>>> +By default, GCC still accepts returning an expression of
>>> +type <code>void</code> from within a function that itself
>>> +returns <code>void</code>, as a GNU extension that matches C++ rules
>>> +in this area.
> Does the GNU extension match C++ (standard rules)?
> Yes. Should I write “matches [standard] C++ rules”?
Looks good to me.
(At first I was confused, but I guess this is a GNU extension to the C
standard - that matches standard C++ in this area?)
Gerald
next prev parent reply other threads:[~2024-02-15 22:58 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-02 16:59 Florian Weimer
2024-02-02 18:08 ` Jonathan Wakely
2024-02-15 15:57 ` Florian Weimer
2024-02-02 19:06 ` Jonathan Wakely
2024-02-08 7:04 ` Sam James
2024-02-15 16:07 ` Florian Weimer
2024-02-15 16:20 ` Sam James
2024-02-09 23:07 ` Gerald Pfeifer
2024-02-15 16:22 ` Florian Weimer
2024-02-15 22:58 ` Gerald Pfeifer [this message]
2024-02-15 16:49 ` Florian Weimer
2024-02-10 11:00 ` Gerald Pfeifer
2024-02-15 16:44 ` Florian Weimer
2024-02-16 21:23 ` Gerald Pfeifer
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