RFR: 8274400: HotSpot Style Guide should permit use of alignof [v2]

[Julian Waters]

On Mon, 26 Dec 2022 23:54:00 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

>> Julian Waters has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:
>> 
>>  - More Descriptive Version
>>  - Merge remote-tracking branch 'upstream/master' into alignof
>>  - HotSpot Style Guide should permit use of alignof
>
> doc/hotspot-style.md line 708:
> 
>> 706: operator in the development of the language and just returns the corresponding
>> 707: `alignof` value, the operator simply provides less verbose syntax for doing so.
>> 708: Newer code should prefer `alignof` to `std::alignment_of<>` if possible.
> 
> Some of this is extraneous, explaining what `alignof` does, which one can get
> elsewhere.  (We don't need to summarize/duplicate that information here.)
> Something short and simple like this is sufficient:
> 
> Use of `alignof`
> ([n2341](https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2341.pdf))
> is permitted.  It should be used instead of `std::alignment_of<>`.
> 
> (We don't need to talk about "Newer code" - I'm pretty sure we have no uses of `std::alignment_of<>`
> in HotSpot.)

Will do, thanks

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PR: https://git.openjdk.org/jdk/pull/11761