ref: 48c5cf1f11fb6b8b620e5ed9269a528b5f6633f4 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; }