> Cannot call abort() because some systems have unsafe corefiles.

Huh, FreeBSD has MAP_NOCORE which allows the program to map pages that will explicitly not be included in the core file. I never realized that this was FreeBSD-specific extension (added in 2007?).

I'm really surprised other platforms haven't adopted it, though I surmise there's a good technical reason or two. (EDIT: or maybe there's similar functionality via another API? I haven't been able to turn up anything).