The following test timed out in the JDK18 CI:

compiler/c2/Test7179138_1.java

Here's a snippet from the log file:

#section:main
----------messages:(6/513)----------
command: main -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:-TieredCompilation -XX:+UnlockDiagnosticVMOptions -XX:+StressIGVN -XX:RepeatCompilation=100 compiler.c2.Test7179138_1
reason: User specified action: run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:-TieredCompilation -XX:+UnlockDiagnosticVMOptions -XX:+StressIGVN -XX:RepeatCompilation=100 compiler.c2.Test7179138_1
Mode: othervm [/othervm specified]
Timeout information:
--- Timeout information end.
elapsed time (seconds): 1303.943
----------configuration:(0/0)----------
----------System.out:(1/28)----------
Timeout refired 1200 times
----------System.err:(0/0)----------
----------rerun:(53/5416)*----------

<snip>

result: Error. Program `c:\ade\mesos\work_dir\jib-master\install\jdk-18+14-734\windows-x64-debug.jdk\jdk-18\fastdebug\bin\java' timed out (timeout set to 1200000ms, elapsed time including timeout handling was 1303928ms).