Sujet : Re: Struct Error
De : tr.17687 (at) *nospam* z991.linuxsc.com (Tim Rentsch)
Groupes : comp.lang.cDate : 23. Jan 2025, 08:15:09
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <8634ha3ssi.fsf@linuxsc.com>
References : 1 2 3
User-Agent : Gnus/5.11 (Gnus v5.11) Emacs/22.4 (gnu/linux)
learningcpp1@gmail.com (m137) writes:
On Thu, 23 Jan 2025 1:05:25 +0000, James Kuyper wrote:
>
I have many draft versions of the C standard. n2912.pdf, dated
2022-06-08, says in 6.7.2.1.p3 about struct types that "... the type is
incomplete144) until immediately after the closing brace of the list
defining the content, and complete thereafter."
>
Therefore, struct scenet is not a complete type until the closing brace
of it's declaration.
>
However, that sentence disappeared in n3047.pdf, dated 2022-08-04. Can
anyone tell me why it was removed? With it gone, I'm not sure it is
still considered an incomplete type.
>
It seems to have been moved to N3047 6.2.5(25): "[...] A structure or
union type of unknown content (as described in 6.7.2.3) is an incomplete
type. [...]" (see here:
https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3047.pdf#page=57).
That sentence isn't new in 6.2.5; it's been there since before C11.
…