@eskimo
1 - I am testing my signal handler and my tests fail. Starting to investigate, I saw that no signal is sent.
2 - I don't agree with the ‘if a tree falls in a forest’ comperison for a few reasons. I use external tools like DTrace and EndpointSecurity to validate that there is no signal.
And I do have a signal handler, so if there isn't a bug (or new behavior in the OS) the signal handler is suppose to be called. Like its called in my x86 machines.