On Sat, 27 Jun 2026 13:24:10 GMT, Jaikiran Pai <[email protected]> wrote:

>> David Simms has updated the pull request with a new target base due to a 
>> merge or a rebase. The pull request now contains 2859 commits:
>> 
>>  - Merge branch '8317277' into jep401_sub_review_8317279
>>  - Merge remote-tracking branch 'valhalla/lworld' into 8317277
>>  - Merge
>>    
>>    Merge jdk-28+4
>>  - 8386963: [lworld] Improve the exception message from Object 
>> synchronization methods on value objects
>>    
>>    Reviewed-by: dholmes, alanb
>>  - 8387300: [lworld] Minor review comments in javac
>>    
>>    Reviewed-by: vromero
>>  - 8387192: [lworld] Review comment drop for core libs
>>    
>>    Reviewed-by: jvernee, vromero
>>  - 8386999: [lworld] C2: assert(is_dead_loop_safe()) failed: shouldn't be 
>> cleared yet
>>    
>>    Reviewed-by: qamai, vlivanov
>>  - 8386787: [lworld] 
>> compiler/valhalla/inlinetypes/TestValueConstruction.java#StressIncrementalInliningDontInlineMyAbstractInit
>>  timed out
>>    
>>    Reviewed-by: phubner, chagedorn
>>  - 8386995: [lworld] Duplicate value classes are a preview feature warning
>>    
>>    Reviewed-by: alanb, vromero
>>  - 8383389: [lworld] Augment AOTMapLogger::print_oop_details to support flat 
>> arrays with oops
>>    
>>    Reviewed-by: iklam, fparain
>>  - ... and 2849 more: https://git.openjdk.org/jdk/compare/193de1b1...cdbe55a9
>
> test/jdk/java/io/Serializable/valueObjects/ValueSerializationTest.java line 
> 161:
> 
>> 159:                 Arguments.of(Arguments.of(
>> 160:                         new SerializablePoint(3, 7),
>> 161:                         new SerializablePoint(4, 8))),
> 
> This test used to be testng test which was later converted to junit. It looks 
> like that conversion might have introduced a bug in this parameter 
> generation. Previously, when this test was testng it used to be:
> 
> 
> @DataProvider(name = "ImplementSerializable")
> public Object[][] implementSerializable() {
>     return new Object[][]{
>             new Object[]{new SerializablePoint(11, 101)},
> 
>             new Object[]{new SerializablePoint[]{
>                     new SerializablePoint(1, 5),
>                     new SerializablePoint(2, 6)}},
> 
>             new Object[]{new Object[]{
>                     new SerializablePoint(3, 7),
>                     new SerializablePoint(4, 8)}},
> 
>             new Object[]{new SerializableFoo(45)},
> 
>             new Object[]{new SerializableFoo[]{new SerializableFoo(46)}},
> 
>             new Object[]{new ExternalizableFoo("hello")},
> 
>             new Object[]{new ExternalizableFoo[]{new 
> ExternalizableFoo("there")}},
>     };
> }
> 
> The conversion has led to:
> 
> 
> Arguments.of(Arguments.of(
>                         new SerializablePoint(3, 7),
>                         new SerializablePoint(4, 8))),
> 
> which is wrong. As a result, right now, instead of running the 
> `implementSerializable(Object obj)` test method 7 times with different 
> paramters, that test method only gets run twice: 
> 
> 
> [01:38:50.773] STARTED    ValueSerializationTest::implementSerializable '[1] 
> [SerializablePoint x=11 y=101]'
> [01:38:50.799] SUCCESSFUL ValueSerializationTest::implementSerializable '[1] 
> [SerializablePoint x=11 y=101]' [25ms]
> [01:38:50.802] STARTED    ValueSerializationTest::implementSerializable '[2] 
> [[SerializablePoint x=1 y=5], [SerializablePoint x=2 y=6]]'
> [01:38:50.808] SUCCESSFUL ValueSerializationTest::implementSerializable '[2] 
> [[SerializablePoint x=1 y=5], [SerializablePoint x=2 y=6]]' [6ms]
> 
> 
> The rest parameters seems to be ignored due to the 
> `Arguments.of(Arguments.of(...))` bug. A similar issue exists in the 
> parameters provider for another test method in this class. I'll file an issue 
> and address this shortly.

Filed https://bugs.openjdk.org/browse/JDK-8387374

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

PR Review Comment: https://git.openjdk.org/jdk/pull/31123#discussion_r3486091507

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