Please upgrade Gradle's Groovy to 2.4.8 (needed for Java9)

[ddimitrov (Dimitar Dimitrov)]

The currently used Groovy 2.4.7 has an issue with Java9 that breaks the Artifactory plugin.

@ddimitrov

I just did a quick test and it appears that Groovy has problems dispatching some calls when ran under Java9. As a quick test I run this in the Groovy shell:

Collections.newSetFromMap([:])

It fails in Groovy 2.4.7 + Java9 with the same exception as above, but succeeds in 2.4.8 + Java9.

Please consider upgrading to Groovy 2.8 in Gradle 3.5

[Stefan_Wolf]

Hi Dimitar,

could you add an issue to the gradle/gradle Github repository? Or could you even try contributing a pull request?

Cheers,
Stefan

[ddimitrov (Dimitar Dimitrov)]

Submitted https://github.com/gradle/gradle/issues/1431

If I am to create a patch, how shall I do the integration testing? The build would need to run under supported JRE, but run that test build only under Java 8 and 9. Is there java 9 on the CI server?

The original problem is reproducible by the artifactory plugin, but I can imagine you don’t want the extra dependency. Or I can write a dummy plugin exposing the issue?