ref: f5bbb69877c377e1ff5e4a8cf1bfb3fc8e39b85a 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; }