After JDK-8345263, lint warnings in compiler.properties are now annotated with their corresponding lint categories, which is a great improvement.

However, the build process does not verify these categories. As a result, errors are possible, and indeed there is one already:

    # lint: dangling
    compiler.warn.dangling.doc.comment=\
        documentation comment is not attached to any declaration
 
There is no such lint category "dangling"; it should be "dangling-doc-comments".

This typo should be fixed, but also the build process should be updated to automatically fail in this scenario if it occurs again in the future.