RFR: 8296742: Illegal X509 Extension should not be created [v8]

[Sean Mullan]

On Tue, 22 Nov 2022 20:24:23 GMT, Weijun Wang <weijun at openjdk.org> wrote:

>> Do you want to add similar checks to the `GeneralSubtree` and `GeneralSubtrees` ctors?
>
> I'll add a check in `GeneralSubtree` to reject a null name. `GeneralSubtrees` is complicated. The intersect and reduce methods make it mutable, so I have to retain all the add and remove methods. Fortunately, its `encode` method still allows an empty tree. If we want to be RFC 5128-compliant and reject the empty tree, I suggest we fix it in a new bug.

Ok.

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PR: https://git.openjdk.org/jdk/pull/11137