[9] RFR of 8075110: (prefs) CodePointZeroPrefsTest fails on certain platforms

[Brian Burkhalter]

Please review at your convenience.

Issue:	https://bugs.openjdk.java.net/browse/JDK-8075110
Diff:

--- a/test/java/util/prefs/CodePointZeroPrefsTest.java
+++ b/test/java/util/prefs/CodePointZeroPrefsTest.java
@@ -27,6 +27,7 @@
 /*
  * @test
  * @bug 8068373
+ * @requires os.family == "linux" | os.family == "solaris"
  * @summary Ensure writing a code point U+0000 null control character is detected.
  */
 public class CodePointZeroPrefsTest

Suppress test from running except on Linux and Solaris OS families. I believe the @requires tag is only supported by jtreg4.1-b10 and higher.

Thanks,

Brian