ref: e2bfa1a57cd5b9b771fb8a33f6b4bc54165d4be8 dir: /sys/src/ape/lib/ap/plan9/sigpending.c/
#include <signal.h> /* * BUG: don't keep track of these */ int sigpending(sigset_t *set) { *set = 0; return 0; }