[jdk21u-dev] RFR: 8325469: Freeze/Thaw code can crash in the presence of OSR frames

[Paul Hohensee]

On Thu, 6 Jun 2024 17:11:09 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Unclean backport to fix Loom bug in presence of OSR frames.
> 
> The major uncleanliness point comes from [JDK-8329332](https://bugs.openjdk.org/browse/JDK-8329332) that eliminated `CompiledMethod` in JDK 23. But it is only a minor hassle for this PR, as it moves away from `as_compiled_method()` anyway! So I mostly just accepted the incoming chunks untouched.
> 
> Additional testing:
>  - [x] MacOS AArch64 server fastdebug, new regression test fails without the patch, passes with it
>  - [x] MacOS AArch64 server fastdebug, `jdk_loom hotspot_loom`
>  - [ ] Linux x86_64 server fastdebug, `all`
>  - [ ] Linux AArch64 server fastdebug, `all`

Marked as reviewed by phh (Reviewer).

-------------

PR Review: https://git.openjdk.org/jdk21u-dev/pull/675#pullrequestreview-2103147045