ref: 4a1d005a9a2318b99df31c92b2c8bcd11cffdb5a 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; }