On Wed, 19 Jul 2023 00:12:53 GMT, Mandy Chung <mch...@openjdk.org> wrote:
> `VarForm::getMemberName` currently throws UOE with no information if the > requested access mode is unsupported. To provide the var handle > information, move the access mode check to `VarHandle` so that the exception > message can include the var handle information. Changes include: > > 1. change `VarHandle::checkAccessModeThenIsDirect` to check if the access > mode is unsupported. This check is only needed for direct var handle. > 2. change `VarHandle::getMethodHandleUncached` to call `getMemberNameOrNull` > and throw UOE with an informative exception message if the access mode is > unsupported > > The error message looks like: > > java.lang.UnsupportedOperationException: compareAndSet is not supported for > VarHandle[varType=java.lang.String, coord=[class Foo$Goo]] This pull request has now been integrated. Changeset: d7b94164 Author: Mandy Chung <mch...@openjdk.org> URL: https://git.openjdk.org/jdk/commit/d7b941640638b35f9ac1ef11cd6bf6ccb795c29a Stats: 12 lines in 4 files changed: 7 ins; 0 del; 5 mod 8199149: Improve the exception message thrown by VarHandle of unsupported operation Reviewed-by: liach, jvernee ------------- PR: https://git.openjdk.org/jdk/pull/14928
