ref: 267e3cc41aa9aed63f2b9f7e9b69ef0b49f3c7c7 dir: /sys/src/ape/lib/ap/plan9/sigsuspend.c/
#include <signal.h> #include <errno.h> /* * BUG: doesn't work */ int sigsuspend(sigset_t *set) { errno = EINVAL; return -1; }