RFR: 8280642: IllegalAccessError thrown by ObjectInputStream.resolveProxyClass is not handled

[Mandy Chung]

On Fri, 28 Jan 2022 21:02:23 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

> During deserialization of a serialized data stream that contains a proxy descriptor with non-public interfaces
> `java.io.ObjectInputStream` checks that the interfaces can be loaded from a single classloader in `ObjectInputStream.resolveProxyClass`.
> If the interfaces cannot be loaded from a single classloader, an `IllegalAccessError` is thrown.
> When `ObjectInputStream.readObject` encounters this case, it reflects an incompatibility
> between the classloaders of the source of the serialized stream and the classloader being used for deserialization.
> When a proxy object cannot be created from the interfaces, `ObjectInputStream.readObject` should catch
> the `InvalidAccessError` and throw `InvalidObjectException` with the `InvalidAccessError` as the cause.
> This allows the application to handle the exception consistently with other errors during deserialization.

`ObjectInputStream::readObject` does not specify that `InvalidObjectException` may be thrown.   Have you considered throwing `InvalidClassException` be an alternative?    i.e. extend `InvalidClassException` to report failure in creating the proxy class during deserialization.

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PR: https://git.openjdk.java.net/jdk/pull/7274