On Fri, 13 Jun 2025 20:24:49 GMT, Sergey Bylokhov <s...@openjdk.org> wrote:

>> This PR simplifies several aspects of the ICC_Profile class:
>> 
>> - [Change 
>> 1](https://github.com/openjdk/jdk/pull/25650/commits/426a608b1df9e39e221d05e7374a3fecf6e6cf30):
>>     The ICC_Profile.getInstance(byte[] data) method used to copy the profile 
>> header for validation. This copy appears redundant, as the original data 
>> array is used later anyway. This logic was originally introduced by 
>> [JDK-8347377](https://bugs.openjdk.org/browse/JDK-8347377).
>> 
>> - [Change 
>> 2](https://github.com/openjdk/jdk/pull/25650/commits/4035c8b1f7e1dcbc9941ead939218bba47b0a2fe):
>>     In some places, the code retrieves the profile header using 
>> getData(icSigHead), which always creates a new array. It is now replaced 
>> with private getData(cmmProfile(), icSigHead) to avoid unnecessary copying. 
>> To clarify the purpose of the private method, I have added documentation.
>> 
>>  - [Change 
>> 3](https://github.com/openjdk/jdk/pull/25650/commits/96ad456593de3dd68c3ae6840fffee7bac68bc0c):
>> After Change 2, static analysis tools began reporting a potential NPE when 
>> using getData(cmmProfile(), icSigHead), since it may return null. To address 
>> this, the internal implementation of getData was updated to always return a 
>> non-null value or throw an exception. The public method now catches this 
>> exception and returns null, as required by the specification. **Note**: this 
>> potential NPE is not a regression introduced by any changes, it simply 
>> became easier for tools to detect due to the simplified code.
>> 
>> @prrace @honkar-jdk please take a look
>
> Sergey Bylokhov has updated the pull request incrementally with one 
> additional commit since the last revision:
> 
>   theHeader -> data

Changes LGTM. CI Testing looks good.

Please wait until @prrace or @jayathirthrao has had a chance to review these 
changes.

-------------

PR Review: https://git.openjdk.org/jdk/pull/25650#pullrequestreview-2936453443

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