ref: 81e6b7e9c958bd5da3c93e204fff59e6868bd0fc 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; }