From: Florian Weimer <fweimer@redhat.com>
To: "Richard Earnshaw (lists)" <Richard.Earnshaw@arm.com>
Cc: gcc@gcc.gnu.org
Subject: Re: Documenting common C/C++ options
Date: Tue, 10 Oct 2023 13:11:50 +0200 [thread overview]
Message-ID: <87pm1mag09.fsf@oldenburg.str.redhat.com> (raw)
In-Reply-To: <085179e2-3ed7-7bf3-b682-326656db378c@arm.com> (Richard Earnshaw's message of "Tue, 10 Oct 2023 11:48:09 +0100")
* Richard Earnshaw:
> On 10/10/2023 11:46, Richard Earnshaw (lists) via Gcc wrote:
>> On 10/10/2023 10:47, Florian Weimer via Gcc wrote:
>>> Currently, -fsigned-char and -funsigned-char are only documented as C
>>> language options, although they work for C++ as well (and Objective-C
>>> and Objective-C++, I assume, but I have not tested this). There does
>>> not seem to be a place for this kind of options in the manual.
>>>
>>> The options -fshort-enums and -fshort-wchar are documented under
>>> code-generation options, but this seems to be a bit of a stretch because
>>> (at least for -fshort-wchar), these too seem to be more about front-end
>>> behavior.
>>>
>>> What would be a good way to address this?
>>>
>>> Thanks,
>>> Florian
>>>
>>
>>
>> All of these are ABI; so where ever it goes, it should be documented
>> that changing them will potentially cause issues with any
>> pre-compiled object files having different settings.
> And you can add -f[un]signed-bitfield to that list as well.
There's already a section for those ABI options that are like
-fshort-enums:
@node Code Gen Options
@section Options for Code Generation Conventions
Maybe we should move them over there.
But that wasn't really the direction of my question. I was wondering
where we should document a future C version of -fpermissive.
Thanks,
Florian
next prev parent reply other threads:[~2023-10-10 11:11 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-10 9:47 Florian Weimer
2023-10-10 10:46 ` Richard Earnshaw (lists)
2023-10-10 10:48 ` Richard Earnshaw (lists)
2023-10-10 11:11 ` Florian Weimer [this message]
2023-10-10 11:15 ` Richard Biener
2023-10-10 16:33 ` Jason Merrill
2023-10-10 17:15 ` Florian Weimer
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