With JDK 9-ea b111 some of Apache Derby's regression tests started failing. The reason appears to be that java.util.Collator.getInstance(Locale) does not return the correct Collator when a security manager is installed.

Given the following Java program:

import java.text.Collator;
import java.util.Locale;

public class TestCollator {
    public static void main(String[] args) {
        Collator c = Collator.getInstance(new Locale("no"));
        System.out.println(c.compare("ab", "aa"));
    }
}

With JDK 8u72 and with JDK 9-ea b110, the program prints -1 both when a security manager is installed and when one is not installed. This is the expected result.

With JDK 9-ea b111, however, I see the following behaviour:

$ ./b111/jre-9/bin/java TestCollator
-1
$ ./b111/jre-9/bin/java -Djava.security.manager TestCollator
1

Both should have printed -1.