ref: 91e7ca12e8ebcf27d17163b830d27c7e7b3aef93 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; }