RFR: 8292312: Work around memset() called operator new [v2]

[Ioi Lam]

On Thu, 18 Aug 2022 21:53:05 GMT, Daniel D. Daugherty <dcubed at openjdk.org> wrote:

>> Ioi Lam 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 two additional commits since the last revision:
>> 
>>  - Merge branch 'master' of https://github.com/openjdk/jdk into 8292312-work-around-memset-after-operator-new
>>  - 8292312: Work around memset() called operator new
>
> Thumbs up. I agree that the changes are textually trivial and I see
> how you are working around the bug with value initialization. My
> brain keeps wondering how GCC 11 could be getting that wrong,
> but I know that you've already proven that it does.
> 
> Very nice hunt!

Thanks to @dcubed-ojdk for the review.
Passed tiers1,2 and build-tier5

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PR: https://git.openjdk.org/jdk/pull/9927