ref: 14cfa56253beb8a2ad8e4700c8c26a6ff6d16ee7 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; }