This is a small issue with StructuredTaskScope. If the owner attempts to fork a subtask and the task scope is shutdown then the implementation doesn't currently force the owner to join when it's the first fork in a new round of forking. The result is that broken code calling Subtask::get throws ISE with the wrong exception message.
The existing test for this API is updated to remove a duplicate test and also fix two tasks that didn't call join. ------------- Commit messages: - Merge - Initial commit Changes: https://git.openjdk.org/jdk/pull/15076/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15076&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8313290 Stats: 23 lines in 2 files changed: 2 ins; 19 del; 2 mod Patch: https://git.openjdk.org/jdk/pull/15076.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/15076/head:pull/15076 PR: https://git.openjdk.org/jdk/pull/15076