RFR: 8308764: Reporting errors from create_vm may crash

[David Holmes]

On Wed, 31 May 2023 02:51:03 GMT, David Holmes <dholmes at openjdk.org> wrote:

> There are more details in the bug report but the basic fix is to not delete the main_thread so that it is available to report the exception that caused VM initialization to fail. Added some additional comments too.
> 
> Testing:
>  - basic fault injection to test non-exception exit paths both before and after Universe:;is_fully_initialized() which exercises the failing use of JavaThread::current()
>  -  tiers 1-3 sanity testing
> 
> Thanks.

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PR Comment: https://git.openjdk.org/jdk/pull/14238#issuecomment-1569427063