+
+void exit_status_set_free(ExitStatusSet *x) {
+ assert(x);
+
+ set_free(x->status);
+ set_free(x->signal);
+ x->status = x->signal = NULL;
+}
+
+bool exit_status_set_is_empty(ExitStatusSet *x) {
+ if (!x)
+ return true;
+
+ return set_isempty(x->status) && set_isempty(x->signal);
+}