Crash when reloading on `jbr_dcevm-17_0_1-osx-aarch64-b164.8` about jetbrainsruntime HOT 10 CLOSED

Hmm some more context, on a simpler project it does not crash but also does not apply the reloaded changes and prints

HOTSWAP AGENT: 22:34:47.539 ERROR (org.hotswap.agent.plugin.jdk.JdkPlugin) - classReload() exception No such field java.beans.Introspector.declaredMethodCache on null.

in the terminal. This error popped up on the original project as well.

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You can ignore the HA error message. HA is not fully ported to java17 now. The crash seems more serious, is it reproducible?

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It’s consistent in one project, doesn’t happen in another. Although in the latter case nothing is reloaded as far as I can tell.

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Is it possible to describe steps how to reproduce it on your https://github.com/Minestom/Minestom project?

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1. git clone https://github.com/Minestom/Minestom
2. git checkout 529_extension_improvement
3. (the rest in IntelliJ for convenience)
4. Project/gradle jdk to JBR
5. Debug src/test/java/demo/Main with -XX:HotswapAgent=fatjar
6. Make an edit at src/main/java/net/minestom/server/instance/InstanceContainer#L465 (for example a system print)
7. Recompile/reload InstanceContainer.java
8. Crash

This is consistent on my machine. The crash does not seem consistent at other locations. That one always crashes though.

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@mworzala thanks for great report. I've fix now for it, it should be included in next release.

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@mworzala before patch will be available, you can use -XX:-UseEmptySlotsInSupers as a workaround for your issue.

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Looks like that's working, thanks for the quick responses and patch!

I will close the issue for now, but if you could make a comment when the next release happens that would be great.

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@skybber why did you reopened this issue? Is it not fixed yet?

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already fixed in java17.

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