On Thu, 18 Apr 2024 05:54:17 GMT, Adam Sotona <asot...@openjdk.org> wrote:
>> Current implementation of `LambdaMetafactory` does not allow to use lambdas
>> in hidden classes. Invocation throws `NoClassDefFoundError` instead.
>>
>> This patch includes lambda implementation in a hidden class under the
>> special handling of `useImplMethodHandle`.
>> The patch also fixes `j/l/i/defineHiddenClass/BasicTest::testLambda` to
>> correctly cover this test case.
>>
>> Please review.
>>
>> Thanks,
>> Adam
>
> Adam Sotona has updated the pull request incrementally with one additional
> commit since the last revision:
>
> Update
> src/java.base/share/classes/java/lang/invoke/InnerClassLambdaMetafactory.java
>
> Co-authored-by: Mandy Chung <mandy.ch...@oracle.com>
`this::toString` references the hidden class by name [1] which fails to be
resolved. The code needs to ensure that hidden class's name is not referenced
for example by casting to a supertype whose is a normal class:
HiddenTest o = this;
Supplier<String> s = o::toString;
[1]
https://download.java.net/java/early_access/jdk23/docs/api/java.base/java/lang/Class.html#hiddenClasses
-------------
PR Comment: https://git.openjdk.org/jdk/pull/18810#issuecomment-2083336824
