From: Joseph Myers <joseph@codesourcery.com>
To: Qing Zhao <qing.zhao@oracle.com>
Cc: Richard Biener <rguenther@suse.de>,
Siddhesh Poyarekar <siddhesh@gotplt.org>,
Kees Cook <keescook@chromium.org>,
Gcc Patches <gcc-patches@gcc.gnu.org>
Subject: Re: [v3][PATCH 2/2] Update documentation to clarify a GCC extension (PR77650)
Date: Fri, 24 Feb 2023 00:56:02 +0000 [thread overview]
Message-ID: <d627a9-3fd3-8032-114b-341d5d72cab3@codesourcery.com> (raw)
In-Reply-To: <501E355F-44A2-4B0F-B3A7-AFDD4BC0AAC6@oracle.com>
On Thu, 23 Feb 2023, Qing Zhao via Gcc-patches wrote:
> But the following:
>
> struct flex1 { int length1; char data1[]; };
> struct flex2 { int length2; char data2[]; };
> union union_flex { struct flex1 f1; struct flex2 f2; }; /* this is C standard. */
>
> struct out_flex { int n; union union_flex flex_data1;}; /* this is GNU extension. */
>
> Should add this item into the documentation?
"union that contains a structure with a flexible array member" is just
like "structure with a flexible array member". I suppose the
documentation should try to make that clear, without repeating it too much
for every separate case.
--
Joseph S. Myers
joseph@codesourcery.com
next prev parent reply other threads:[~2023-02-24 0:56 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-11 0:50 [v3][PATCH 0/2] Handle component_ref to a structure/union field including FAM for builtin_object_size Qing Zhao
2023-02-11 0:50 ` [v3][PATCH 1/2] Handle component_ref to a structre/union field including C99 FAM [PR101832] Qing Zhao
2023-02-17 13:57 ` Qing Zhao
2023-02-23 14:12 ` Fwd: " Qing Zhao
2023-02-11 0:50 ` [v3][PATCH 2/2] Update documentation to clarify a GCC extension (PR77650) Qing Zhao
2023-02-17 13:58 ` Qing Zhao
2023-02-23 14:14 ` Fwd: " Qing Zhao
2023-02-23 21:24 ` Joseph Myers
2023-02-23 22:04 ` Qing Zhao
2023-02-23 22:30 ` Qing Zhao
2023-02-24 0:56 ` Joseph Myers [this message]
2023-02-24 13:50 ` Qing Zhao
2023-02-17 13:57 ` [v3][PATCH 0/2] Handle component_ref to a structure/union field including FAM for builtin_object_size Qing Zhao
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