On Fri, 22 Oct 2021 10:17:13 GMT, Alan Bateman <[email protected]> wrote:

>> Jaikiran Pai has updated the pull request incrementally with two additional 
>> commits since the last revision:
>> 
>>  - drop final
>>  - no need to check for null values
>
> src/java.base/share/classes/java/lang/module/ModuleDescriptor.java line 2559:
> 
>> 2557:                 continue;
>> 2558:             }
>> 2559:             h += e.ordinal();
> 
> This e == null check suggests there is an issue elsewhere, can you explain 
> the scenario where you see this? Also can you drop the spurious use of 
> "final" here, it's inconsistent with the existing code.
> 
> Do you want us to look at the test? It looks like it needs clean-up and I'm 
> not sure if you want to wait for the CDS issue or not.

Hello Alan,

> This e == null check suggests there is an issue elsewhere, can you explain 
> the scenario where you see this?

That was just a pre-emptive defensive check I had added. There isn't a scenario 
in that flow where any of the elements are currently null. I have updated this 
PR to remove that check. Test continues to pass with this change. Also removed 
the "final".

> Do you want us to look at the test? It looks like it needs clean-up and I'm 
> not sure if you want to wait for the CDS issue or not.

Yes please. The test is ready for review. The only place where there's a `TODO` 
is where that part of commented code is affected by the bug mentioned in that 
comment. I would like to use that check (the commented out one) but I don't 
want to wait for that other bug to be fixed for this PR, since I am unsure how 
big or how long it might take for the other bug to be fixed. I plan to 
uncomment that part in a separate PR once that other bug is fixed, if that's OK.

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

PR: https://git.openjdk.java.net/jdk/pull/6078

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