[lworld] RFR: 8373567: [lworld] Move array copy exception throwing out of GC barriers [v2]

[Stefan Karlsson]

On Mon, 15 Dec 2025 19:51:28 GMT, Dan Heidinga <heidinga at openjdk.org> wrote:

>> I started to write a comment but they end up being something like:
>> 
>> // Make sure that the caller does not accidentally ignore the return value
>> 
>> 
>> which is sort-of what [[nodiscard]] means, so I'm not sure this is a good comment.
>> 
>> Maybe something talking about why it is important to not forget to check the return value:
>> 
>> The caller is responsible to throw an exception on failure
>> 
>> 
>> WDYT?
>
>> The caller is responsible to throw an exception on failure
> 
> That would be perfect!  Thanks

I added the last sentence but I'm a little bit uncertain about the grammar. Feel free to nit-pick if it sounds weird.

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PR Review Comment: https://git.openjdk.org/valhalla/pull/1792#discussion_r2620924424