Generated by 🚫 Danger

sun.misc.Signal is not ignored anymore. This struck me as very peculiar, since there's nothing special about Signal that makes it less unstable than eg sun.misc.Unsafe... The way I see it, the goal of the rule is not to forbid using Unsafe or Signal or whatever, but to avoid doing it everywhere, and to confine those dependencies to small scopes, in which the rule can be suppressed. This applies to Signal as well and it weakens the rule to make an exception for it.

Yes, it makes no sense to handle sun.misc.Signal any different. The problem with using those internal JDK classes is, that it won't work out of the box since java9+ and these classes will be probably hidden completely away with later versions - which means, your application is not compatible with java...

These classes were a big topic when Java 9 introduced the module system. You can still enable access to these classes I think, but they are not available by default anymore.