Recent changes to SocketPermission cause the constructor to throw
ArrayIndexOutOfBoundsException if the host parameter is specified as ":".

Here's a test case:

public class Foo {
    public static void main(String[] args) {
        new java.net.SocketPermission(":", "connect");
    }
}

Running this test case in the latest build produces:

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException
at java.net.Inet6Address.textToNumericFormat(Inet6Address.java:380)
at java.net.SocketPermission.init(SocketPermission.java:336)
at java.net.SocketPermission.<init>(SocketPermission.java:204)
at Foo.main(Foo.java:3)

Running it in the previous build produces no exception.