ref: 424dea82a52d6d8ca3f16c34d1a5aa8d85a822b4 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; }