ref: 201c4b566f54ee0e5cb5122f9a9bf1a68b3466e2 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; }