RFR: 8282773: Refactor parsing of integer VM options [v5]

[Ioi Lam]

On Mon, 14 Mar 2022 05:41:29 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

>> Ioi Lam has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   @kimbarrett comments -- avoid using "long" type and revert the implementation to 2a5e3e6df3e61b15126ca0582aada57955a25a07, and updated comments
>
> Looks good.

Thanks @kimbarrett and @dholmes-ora for the review.

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PR: https://git.openjdk.java.net/jdk/pull/7763