RFR: 8283994: Make Xerces DatatypeException stackless [v2]

[Aleksey Shipilev]

On Wed, 6 Apr 2022 07:48:04 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> Any other reviews? I would like someone else to confirm my investigation that we don't use the stack traces out of these exceptions too...
>
>> Hello @shipilev, do you think this stackless nature of this specific `DatatypeException` type should be noted in its javadoc, just to avoid any surprises when someone in future ends up using this exception type as the "cause" of some other exception?
> 
> I don't think so. It seems to me the intent for these exceptions is to carry error information without any stack trace info.

> @shipilev
> 
> > Any other reviews? I would like someone else to confirm my investigation that we don't use the stack traces out of these exceptions too...
> 
> I opened [XERCESJ‑1742](https://issues.apache.org/jira/browse/XERCESJ-1742) to get this change upstreamed into **Xerces**, the resolution of which should also answer your question about whether the stack traces are really unused.

Thanks! But I see there seem to be no upstream interest yet. So I am planning to integrate this to JDK first, and so asking for JDK-specific reviews again.

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PR: https://git.openjdk.java.net/jdk/pull/8036