sigfillset        222 maint/gnulib/lib/signal.in.h # undef sigfillset
sigfillset        281 maint/gnulib/lib/signal.in.h #   undef sigfillset
sigfillset        371 maint/gnulib/lib/signal.in.h # undef sigfillset
sigfillset        178 maint/gnulib/lib/sigprocmask.c sigfillset (sigset_t *set)