The new test from JDK-8364361 fails on AIX:
[11:11:22.980] STARTED jdk.java.lang.Process.ProcessCloseTest::autoCloseableAll '[6] [cat, NoSuchFile.txt], [STDERR_PRINT_ALL_LINES, STDOUT_EXPECT_EMPTY], [FAIL]'
Program: [cat, NoSuchFile.txt]; pid: 8978876
    STDERR_PRINT_ALL_LINES
        1 lines
        [cat: cannot open NoSuchFile.txt]

    STDOUT_EXPECT_EMPTY
    FAIL
    ExitStatus: 2, sig#: 2, waitFor latency: PT0.000004S

org.opentest4j.AssertionFailedError: Status: 2, sig#: 2, expected one of: [1]
at org.junit.jupiter.api.AssertionUtils.fail(AssertionUtils.java:38)
at org.junit.jupiter.api.Assertions.fail(Assertions.java:138)
at jdk.java.lang.Process.ProcessCloseTest$ExitStatus.assertEquals(ProcessCloseTest.java:286)
at jdk.java.lang.Process.ProcessCloseTest$ExitStatus.accept(ProcessCloseTest.java:269)
at jdk.java.lang.Process.ProcessCloseTest$ExitStatus.accept(ProcessCloseTest.java:247)
at jdk.java.lang.Process.ProcessCloseTest.lambda$doCommands$0(ProcessCloseTest.java:170)