[Jtsummers]

And it's worth noting that while man mmap on macOS doesn't indicate what happens when the protections are violated (that is, if you try to read, write, or execute in violation of the set protections) the related function mprotect has this to say in macOS 14.3 (what I have available):

> When a program violates the protections of a page, it gets a SIGBUS or SIGSEGV signal.

(The Linux man pages for mmap and mprotect indicates SIGSEGV would be signaled.)

So the past use and assumption (SIGSEGV or SIGBUS) are consistent with the expectations of mmap and mprotect given the documentation provided.