ref: 4adb1d68d1a958c2ee3c5cfe2e26968e13dcfc1b 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; }