The following command causes a failure:

% jimage list ''

java.lang.StringIndexOutOfBoundsException: String index out of range: 0
        at java.base/java.lang.StringLatin1.charAt(StringLatin1.java:45)
        at java.base/java.lang.String.charAt(String.java:704)
        at jdk.jlink/jdk.tools.jlink.internal.TaskHelper$OptionsHelper.handleOptions(TaskHelper.java:530)
        at jdk.jlink/jdk.tools.jlink.internal.TaskHelper$OptionsHelper.handleOptions(TaskHelper.java:482)
        at jdk.jlink/jdk.tools.jimage.JImageTask.run(JImageTask.java:174)
        at jdk.jlink/jdk.tools.jimage.Main.main(Main.java:34)


If the last argument is omitted the correct message appears:
% jimage list
Error: no jimage provided

The issue affects all jimage commands: info, list, extract, verify.

Tested on the latest jigsaw and jdk 9-ea+144.