8386776: [17u] Test test/langtools/jdk/jshell/UndefinedClassTest.java fails on JDK 17 with java.lang.ThreadDeath

[rm-gh-8]

The test fails because waitOutput(out, "NotExist") matches the input echo before JShell finishes compiling. The test exits early and Thread.stop() kills the compiler mid-flight. This doesn't manifest in JDK 20+ because of JDK-8289610.

This PR adds waitOutput(out, PROMPT) after matching "NotExist" in order to ensure that JShell has completed compilation.

Ran related tests on linux-x64, linux-aarch64, macos-aarch64 and windows-x64:

make test TEST=test/langtools/jdk/jshell/UndefinedClassTest.java

Results:

windows-x64-specific-test.log
macos-aarch64-specific-test.log
linux-x64-specific-test.log
linux-aarch64-specific-test.log

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• JDK-8386776 needs maintainer approval

Issue

• JDK-8386776: [17u] Test test/langtools/jdk/jshell/UndefinedClassTest.java fails on JDK 17 with java.lang.ThreadDeath (Bug - P4 - Approved)

Reviewers

• Paul Hohensee (@phohensee - Reviewer)

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8386776: [17u] Test test/langtools/jdk/jshell/UndefinedClassTest.java  fails on JDK 17 with java.lang.ThreadDeath

Reviewed-by: phh

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At the time when this comment was updated there had been 3 new commits pushed to the master branch:

• d133da2: 8356695: java/lang/StringBuilder/HugeCapacity.java failing with OOME
• a94ecbe: 8373866: Refactor java/net/httpclient/ThrowingSubscribers*.java tests to use JUnit5
• eb94d68: 8378878: Refactor java/nio/channels/AsynchronousSocketChannel test to use JUnit

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/approval 8386776 request This is a test fix.

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[GoeLin]

I verified this fixes the issue in out CR.