On Tue, 15 Sep 2020 17:28:44 GMT, Phil Race <p...@openjdk.org> wrote:

>> Number overflow in javax/imageio/stream/MemoryCache.java
>> I tried to reproduce the issue but was not able to create stream or 
>> BufferedImage of such a large size because of array
>> size limitations. Submitter has mentioned simple fix for overflow which has 
>> solved his issue. I have verified the fix
>> by running jtreg and compatibility tests and there are no failures.
>
> If pos is big enough you could still theoretically have overflow, but this is 
> still better.

You can try to create such images using some separate tools, BTW I have found 
one here(32768 × 32768):
https://forums.bohemia.net/forums/topic/202016-high-quality-maps-for-altis-and-stratis/

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PR: https://git.openjdk.java.net/jdk/pull/182

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