The following test failed in the JDK18 CI:

gc/stringdedup/TestStringDeduplicationInterned.java#G1

Here's a snippet from the log file:

[9.389s][debug][stringdedup ] Skipped: 9 (dead), 0 (incomplete), 0 (shared)
[9.389s][debug][stringdedup ] Table: 2889 values in 503 buckets, 0 dead (0)
[9.389s][debug][stringdedup,phases,start] Idle start
End: Young GC 1/1
Creating strings: total=10, unique=10
Begin: Full GC 1/3
[9.680s][info ][gc ] GC(4) Pause Full (System.gc()) 1M->0M(100M) 14.531ms
End: Full GC 1/3
Creating strings: total=10, unique=10
Begin: Full GC 2/3
[9.695s][info ][gc ] GC(5) Pause Full (System.gc()) 1M->0M(100M) 12.611ms
End: Full GC 2/3
Creating strings: total=10, unique=10
Begin: Full GC 3/3
[9.724s][info ][gc ] GC(6) Pause Full (System.gc()) 1M->0M(100M) 28.755ms
End: Full GC 3/3
Waiting for deduplication...
];
 stderr: [Exception in thread "main" java.lang.RuntimeException: String 3 doesn't match either
at gc.stringdedup.TestStringDeduplicationTools$InternedTest.main(TestStringDeduplicationTools.java:387)
]
 exitValue = 1

java.lang.RuntimeException: Expected to get exit value of [0]

at jdk.test.lib.process.OutputAnalyzer.shouldHaveExitValue(OutputAnalyzer.java:489)
at gc.stringdedup.TestStringDeduplicationTools.testInterned(TestStringDeduplicationTools.java:513)
at gc.stringdedup.TestStringDeduplicationInterned.main(TestStringDeduplicationInterned.java:94)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:577)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:312)
at java.base/java.lang.Thread.run(Thread.java:833)

JavaTest Message: Test threw exception: java.lang.RuntimeException
JavaTest Message: shutting down test

result: Failed. Execution failed: `main' threw exception: java.lang.RuntimeException: Expected to get exit value of [0]