Hi Mingye,
On 3/22/23 09:39, Mingye Wang wrote:
> Hi Alex,
>
> It looks like Sam James has already documented level 3 of the macro.
> The attached (no, git send-email is not happy with my proxy setup)
> patch only adds some language related to clang. Here's to hoping the
> system is happy with multipart mail.
>
> I've CCed Erik Pilington, since he is the author of the LLVM-svn
> 352665, the change that introduced __builtin_dynamic_object_size() in
> 2019.
Thanks!
>
> Regards,
> Mingye Wang
> From b21bc416f0772b3c7783a1cb396cce5c0a170713 Mon Sep 17 00:00:00 2001
> From: Mingye Wang <arthur200126@xxxxxxxxx>
> Date: Wed, 22 Mar 2023 16:18:27 +0800
> Subject: [PATCH] feature_test_macros.7: document clang fortify support
>
> This commit lists both gcc and clang versions. It also happens to fix
> the "glibc 4.0" mistake in b324e17d3208c940622ab192609b836928d5aa8d.
>
> Signed-off-by: Mingye Wang <arthur200126@xxxxxxxxx>
> ---
> man7/feature_test_macros.7 | 15 +++++++++++----
> 1 file changed, 11 insertions(+), 4 deletions(-)
>
> diff --git a/man7/feature_test_macros.7 b/man7/feature_test_macros.7
> index 4dc9b9594..1c2719a80 100644
> --- a/man7/feature_test_macros.7
> +++ b/man7/feature_test_macros.7
> @@ -655,15 +655,22 @@ For example, a program where
> size argument is variable
> can now be fortified.
> .IP
> -Use of this macro requires compiler support, available with
> +Use of this macro requires compiler support, available since
> .BR gcc (1)
> -since glibc 4.0.
> -.IP
> +4.0
Please follow the style used since this commit:
commit b324e17d3208c940622ab192609b836928d5aa8d
Author: Alejandro Colomar <alx@xxxxxxxxxx>
Date: Sun Dec 4 20:38:06 2022 +0100
Many pages: wfix
Refer consistently to software versions. In most cases, it is done as
<software> <version>. In the case of Linux and glibc, use the project
name, instead of other terms such as 'kernel' or 'library'.
I found the uses of inconsistent language with the following:
$ find man* -type f \
| xargs grep -i '\(since\|before\|after\|until\|to\|from\|in\|between\|version\|with\) \(kernel\|version\|2\.\|3\.\|4\.\|5\.\)' \
| sort
However, I might have missed some cases. Anyway, 99% consistency is
pretty good consistency. We'll fix the remaining cases as we see them.
Signed-off-by: Alejandro Colomar <alx@xxxxxxxxxx>
That means, unformatted GCC 4.0 and Clang 2.6.
> +and
> +.BR clang (1)
> +2.6.
> Use of
> .B _FORTIFY_SOURCE
> set to 3 requires
> .BR gcc (1)
> -version 12.0 or later.
> +version 12.0 or later, or
Remove the "version" word.
Cheers,
Alex
> +.BR clang (1)
> +version 9.0 or later, in conjunction with glibc 2.33 or later.
> +.\" glibc is not an absolute requirement (gcc has libssp; NetBSD/newlib
> +.\" and Darwin each have their own implementation), but let's keep it
> +.\" simple.
> .SS Default definitions, implicit definitions, and combining definitions
> If no feature test macros are explicitly defined,
> then the following feature test macros are defined by default:
> --
> 2.40.0.windows.1
>
--
<http://www.alejandro-colomar.es/>
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