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sbt/main-actions/src
EugeneandEugene cfba74f6ee [2.0.x] fix: Read all forked test output before reporting the fork's exit (#9860)
**Problem**
When a forked test JVM exits, WorkerProxy.watch calls notifyExit right
away, and on exit code 0 that completes the run. If the response reader
has not consumed the rest of the stream yet, the remaining events, logs and
the final response are dropped, and the build passes with failing tests
unreported. Slow listeners, or several forks at once, make this likely.

**Solution**
Track when the response stream reaches end of input (the socket reader for
Tcp/Ipc, stdout for Stdio), and have the watch thread wait for it, with a
bound, before calling notifyExit. This is what sbt 1.x did by joining the
acceptor thread. The new scripted test uses a listener that sleeps per
event, and fails without this change.

Fixes #9859

Generated-by: Claude Opus 5.5

Co-authored-by: Eugene <[email protected]>
2026-10-05 14:01:49 -04:00
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