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-rw-r--r--src/core/manager.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/core/manager.c b/src/core/manager.c
index f13e933578..78f2a21061 100644
--- a/src/core/manager.c
+++ b/src/core/manager.c
@@ -1631,7 +1631,9 @@ static void invoke_sigchld_event(Manager *m, Unit *u, const siginfo_t *si) {
log_unit_debug(u, "Child "PID_FMT" belongs to %s", si->si_pid, u->id);
unit_unwatch_pid(u, si->si_pid);
- UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status);
+
+ if (UNIT_VTABLE(u)->sigchld_event)
+ UNIT_VTABLE(u)->sigchld_event(u, si->si_pid, si->si_code, si->si_status);
}
static int manager_dispatch_sigchld(Manager *m) {