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Chao Li (Evan)
---------------------
Highgo Software Co., Ltd.
https://www.highgo.com/


Chao Li <[email protected]> 于2025年8月28日周四 10:28写道:

>
>
> On Aug 27, 2025, at 17:24, Peter Eisentraut <[email protected]> wrote:
>
> This style of having Foo be a type alias for pointer-to-FooData is an
> ancient Postgres coding convention that does not map well to modern C that
> has an emphasis on judicious use of qualifiers and attributes, and so if
> this abstraction gets in the way, we sometimes crack it open, like in the
> case of ItemPointerGetBlockNumber() etc.
>
>
> You are right, we want to protect the stuff that “tid” points to instead
> of “tid” itself:
>
>      *tid = something; // should hit compile error
>      tid = something; // ok
>
> Also, thanks for telling the history. I have updated the patch to use
> “const ItemPointerData *” in the same way as ItemPointerGetBlockNumber().
>
> Attached is the v2 patch.
>
> Best regards,
> --
> Chao Li (Evan)
> HighGo Software Co., Ltd.
> https://www.highgo.com/
>
>
>
>
>

Attachment: v2-0001-Mark-ItemPointer-parameters-as-const-in-tuple-tab.patch
Description: Binary data

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