[crac] RFR: Use special class for exception aggregates [v7]

[Anton Kozlov]

On Thu, 8 Jun 2023 06:35:45 GMT, Radim Vansa <duke at openjdk.org> wrote:

>> Extracted non-essential changes from other PR.
>
> Radim Vansa has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Moved exception after native failure

Could you please update the PR titile to match the new content?

src/java.base/share/classes/jdk/crac/CheckpointException.java line 36:

> 34: 
> 35:     /**
> 36:      * Creates a {@code CheckpointException}.

I probably misclicked "Add comment",

https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Throwable.html#%3Cinit%3E(java.lang.String,java.lang.Throwable,boolean,boolean):
> Subclasses of Throwable should document any conditions under which suppression is disabled and document conditions under which the stack trace is not writable.

The javadoc should specify the stack trace is not writeable, here and for other exceptions

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PR Review: https://git.openjdk.org/crac/pull/64#pullrequestreview-1469403293
PR Review Comment: https://git.openjdk.org/crac/pull/64#discussion_r1222706815