Ref:

https://docs.oracle.com/en/java/javase/15/vm/signal-chaining.html#GUID-CB49A2A7-2A9F-4C18-948F-6D4A96FF688D

The deprecated sigset/signal usage has now been removed so the docs need updating:

1. Remove the deprecation note added under JDK-8257645

2. Replace the sentence

This library ensures that calls such as signal(), sigset(), and sigaction() are intercepted and don’t replace the signal handlers that are used by the HotSpot VM, if the handlers conflict with the signal handlers that are already installed by HotSpot VM.

with

This library ensures that calls to sigaction() are intercepted and don’t replace the signal handlers that are used by the HotSpot VM, if the handlers conflict with the signal handlers that are already installed by HotSpot VM.

3. Replace the sentence:

The interposed signal() , sigset() , and sigaction() calls return the saved signal handlers, not the signal handlers installed by the HotSpot VM and are seen by the operating system.

with

The interposed sigaction() call returns the saved signal handler, not the signal handler installed by the HotSpot VM and seen by the operating system.