RFR: 8313564: Fix -Wconversion warnings in classfile code [v5]

[Coleen Phillimore]

On Fri, 4 Aug 2023 05:18:35 GMT, David Holmes <dholmes at openjdk.org> wrote:

> Okay on reverting the item_count changes - but we should look at a follow up RFE to get these types sorted out.

In this case, I think we need items_count to be size_t so that we can do an explicit bounds check for CDS, so this type is correct.

Thanks for reviewing, Matias, Dean and David.

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PR Comment: https://git.openjdk.org/jdk/pull/15111#issuecomment-1665665640