JDK 20 support

[dougxc]

JDK 20 is going to land in March 2023. It would be great to have JDK 20 support in ProGuard soon to be prepared.

[mrjameshamilton]

Looking at the JDK 20 page there doesn't seem to be anything that requires major changes in ProGuard, except for a version bump.

[dougxc]

Hi @mrjameshamilton , is there a rough ETA as to when there will be a release with support for JDK 20?

[mrjameshamilton]

Hi @dougxc ! Since there doesn't seem to be any relevant changes required apart from the version bump; I've bumped the max supported version in ProGuardCORE.

To already test it you could build ProGuardCORE + ProGuard yourself:

• Publish ProGuardCORE to mavenLocal: ./gradlew publishToMavenLocal
• Update the ProGuardCORE version in the ProGuard gradle.properties file
• Build ProGuard: ./gradlew assemble

I also attach a pre-built zip distribution: proguard-7.3.2.zip

[dougxc]

I've run our tests with that pre-built zip and everything works - thanks! Hopefully this means a release with these changes can be made soon.

[dougxc]

@mrjameshamilton is there any chance a release could be made soon?

[mrjameshamilton]

Hi @dougxc ! I'll try to make a release next week.

[dougxc]

Sorry - accidental press of the wrong button!

[mrjameshamilton]

Released in 7.3.2 https://github.com/Guardsquare/proguard/releases/tag/v7.3.2