signalled when saving the core. If no warning is signalled, then the
foreign symbol references will remain intact. Platforms where this is
currently the case are x86/FreeBSD, x86/Linux, x86/NetBSD,
-sparc/Linux, and sparc/SunOS.
+sparc/Linux, sparc/SunOS, and ppc/Darwin.
This implementation is not as polished and painless as you might like:
* It corrupts the current Lisp image enough that the current process