Scala 2.12.21 release planning

[SethTisue]

This thread is for updates and discussions about the eventual Scala 2.12.21 release.

As of yet, we don’t know anything about the release’s likely timing or contents (except that we’ll likely need to upgrade ASM for the optimizer to support JDK 24).

We can use this thread to ask, propose, discuss.

[SethTisue]

There is now some pressure to release Scala 2.12.21 in order to ship the ASM upgrade that allows the optimizer to work on JDK 24. (This upgrade is already available in our nightly builds.)

Is anyone aware of anything else that ought to go in the release? If so, please speak up this week.

Nothing else of interest to end users has been merged since 2.12.20.

Work is in progress on adding JDK 24 to our testing matrix; see JDK 24 · Issue #897 · scala/scala-dev · GitHub

[mkurz]

I just opened two PRs:

• [2.12.x] Build and test with Java 24 by mkurz · Pull Request #11027 · scala/scala · GitHub (I think you want to test against Java 24 actually?)
• Draft PR for upgrading asm that brings Java 25 support: [2.12.x] Upgrade asm for JDK25 support by mkurz · Pull Request #11028 · scala/scala · GitHub Hopefully ASM pushes out a new release until end of this week so we could make use of it in Scala 2.12.21

Thanks!

[SethTisue]

Thank you for bringing this to our attention. Yes, looks like waiting for this makes sense.