Code inlining and jvm-target

[altavir]

I just encountered the following error:

Cannot inline bytecode built with JVM target 11 into bytecode that is being built with JVM target 1.8

Obviously, the kernel uses JVM 8 as a target and if the library targets 11, there will be problems with inlining. There are several ways to address the problem. There could be a switch in the configuration, or it could use current JDK target as default or both.

[ileasile]

What are you trying to do? We have a gradle option to change a target for kernel (see #39), will it help you if the kernel will be built with 11 target?

[altavir]

I tried to use a library with inline methods which were built with jvmTarget="11". Now I understand that it is not a simple problem, we usually can't control the target of libraries we use in the notebook and it is quite possible that some of those will be built with different targets.

[altavir]

I've explicitly checked that the java version is 11. This version of plotly.kt is built with jvmTarget ="11".

[ileasile]

Could you please share your notebook (here or in JB Slack direct messages)? I think I know where this error goes from, need to check it.

[ileasile]

Could you please try kernel version (from dev channel) 0.8.1.40.dev7?

[altavir]

It works for 0.8.1.40.dev7

[ileasile]

I've added a possibility to assert version in the notebook like that:

JavaRuntimeUtils.assertVersionAtLeast(11)

More version utils are available via JavaRuntimeUtils object.

Also, JVM target for snippets is now set to current JRE version. So, the issue should be fixed now.

[phiSgr]

Also, JVM target for snippets is now set to current JRE version. So, the issue should be fixed now.

Can it be currentJavaVersion.coerceAtMost(max of JvmTarget supported by compiler)?

If I run Kotlin Jupyter on Java 22, JVM target 22 (class file version 66) is unsupported by current Kotlin compiler, so it defaults to 1.8. And I will still get Cannot inline bytecode built with JVM target 11 into bytecode that is being built with JVM target 1.8. Please specify proper '-jvm-target' option