RFR: 8282200: ShouldNotReachHere() reached by AsyncGetCallTrace after JDK-8280422

[David Holmes]

On Mon, 21 Feb 2022 14:43:27 GMT, Johannes Bechberger <duke at openjdk.java.net> wrote:

> Fixes the mentioned bug by replacing the check in AsyncGetCallTrace using the newly introduced method `JavaThread::thread_from_jni_environment`.

I marking this as changes requested because I need to investigate further. A `shouldNotReachHere` should never be reached, if it can be reached then the circumstances need investigated to see where the true problem lies.

Thanks,
David

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Changes requested by dholmes (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/7559