what can I do if the `compileKotlin` Gradle task always hangs for 10+ minutes, and launches a Java p...

# gradle

[Adam S]

what can I do if the compileKotlin Gradle task always hangs for 10+ minutes, and launches a Java process that takes up 100% CPU?

This is for a small v1.8.10 project with ~10 Kotlin classes (Gradle 8.0.2)

I’ve tried cleaning, rebooting, running with --no-build-cache, --no-configuration-cache, kotlin.incremental=false, `kotlin.caching.enabled=false`…

[tapchicoma]

Does build finish?

[Adam S]

these are the tasks that hang

build.log

[Adam S]

I haven’t tried to let it finish, I always quit early. An hour ago it took seconds to compile,

[tapchicoma]

please try to take a look into Kotlin daemon logs inside <tmp> directory. For example /tmp/kotlin-daemon.2023.*.log

[Adam S]

there’s nothing in the root /tmp dir

[tapchicoma]

that is strange.. Is Kotlin daemon running?

[Adam S]

hmm I’m not sure.

[tapchicoma]

Try via jps -v

[tapchicoma]

also could you try to run the build with Kotlin 1.8.20?

[Adam S]

oh, it’s working now

[Adam S]

BUILD SUCCESSFUL in 24s

[Adam S]

yeah it’s just working, just like before 🪄

[Adam S]

oh interesting… it compiles when I comment out everything in the main method. But when I revert it, it stops compiling

[Adam S]

here’s a very quick overview of what’s failing to compile.

main.kt

[Adam S]

possibly caused by a while(true) {} after a suspending function?

[Adam S]

it doesn’t seem to occur in 1.8.20, but it does in 1.8.10.

I’ve made a YouTrack issue just in case: https://youtrack.jetbrains.com/issue/KT-57744

[hfhbd]

yeah: https://youtrack.jetbrains.com/issue/KT-56815/compileKotlin-task-is-stuck-with-whiletrue-and-suspend-function

[Adam S]

nice one, that looks the same

[Adam S]

Build stuck for several hours (seems to be stuck infinitely)

Stuck for hours! That poor dev…