is it a requirement that the 3p pages only contain text that's explicitly in POSIX? the siginfo_t::si_addr description on system_data_types.7 (which is what people see if they `man siginfo_t`) says "Address of faulting instruction", which isn't true for all signals, and caused enough confusion for the ART maintainers that they came to me as Android's libc maintainer for an adjudication. meanwhile the sigaction.2 page says "Memory location which caused fault" which seems much more helpful. i _was_ going to send you a patch, but then i checked https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/signal.h.html which has the same unfortunate "Address of faulting instruction" wording. at which point i assume you want me to file an Austin Group bug (which i'll do anyway: https://www.austingroupbugs.net/view.php?id=1775), and presumably wait for POSIX's wording to improve before changing system_data_types.7?
