static int brightness_writer_fork(BrightnessWriter *w);
static int on_brightness_writer_exit(sd_event_source *s, const siginfo_t *si, void *userdata) {
- BrightnessWriter *w = userdata;
+ BrightnessWriter *w = ASSERT_PTR(userdata);
int r;
assert(s);
assert(si);
- assert(w);
assert(si->si_pid == w->child);
w->child = 0;