[jdk24] RFR: 8348562: ZGC: segmentation fault due to missing node type check in barrier elision analysis

[Martin Doerr]

On Mon, 3 Feb 2025 18:15:53 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> Clean backport of [JDK-8348562](https://bugs.openjdk.org/browse/JDK-8348562). It only adds a null check + bailout where the current implementation crashes with SIGSEGV.
>
> The fix was requested for JDK 24 update (jdk24u repository) not for JDK 24 branch which this change is based on (if I see this correctly).

@vnkozlov I had originally targeted 24u, but Tobias has reclassified it as P2, so this is the new PR. I will close the other one if this one gets approved.

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PR Comment: https://git.openjdk.org/jdk/pull/23422#issuecomment-2631736130