Please review at your convenience. Issue: https://bugs.openjdk.java.net/browse/JDK-8079539 Diff:
--- a/test/java/util/prefs/CodePointZeroPrefsTest.java +++ b/test/java/util/prefs/CodePointZeroPrefsTest.java @@ -28,6 +28,7 @@ * @test * @bug 8068373 8075110 8075156 * @summary Ensure a code point U+0000 null control character is detected. + * @run main/othervm -Djava.util.prefs.userRoot=. CodePointZeroPrefsTest */ public class CodePointZeroPrefsTest { The problem was due to a lack of permissions to set up the user root. This resulted from my omission to include the definition of the java.util.prefs.userRoot property in a @run tag. Regression test job is in progress. Thanks, Brian