On Mon, 5 Oct 2026 02:53:37 GMT, Yunbo Zhang <[email protected]> wrote:
>> Please review this small fix. >> >> `MethodHandles.foldArguments` throws an unspecified >> `ArrayIndexOutOfBoundsException` for negative `pos` values. Extreme values >> such as `Integer.MAX_VALUE` can also overflow the existing addition-based >> bounds check. >> >> **Fix:** >> >> Reject invalid positions with `IllegalArgumentException` and include the >> position in the error message. Use a subtraction-based bounds check to avoid >> overflow, and document the valid range for `pos`. >> >> **Testing:** >> >> - Added regression tests. >> - `make test TEST=test/jdk/java/lang/invoke`: 198 passed, 4 excluded, 0 >> failed. >> >> --------- >> - [x] I confirm that I make this contribution in accordance with the >> [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). > > Yunbo Zhang has updated the pull request incrementally with one additional > commit since the last revision: > > 8367022: MethodHandles.foldArguments throws unspecified > ArrayIndexOutOfBoundsException for negative pos > > Document the legal fold position range and report an invalid position > before checking target and combiner types. I've created the CSR here: https://bugs.openjdk.org/browse/JDK-8393749 I'll ask my colleague to review it, then I will submit it. ------------- PR Comment: https://git.openjdk.org/jdk/pull/32618#issuecomment-6042453580
