The libsystemd bus event loop is:
while (e->state != SD_EVENT_FINISHED) {
r = sd_event_run(e, (uint64_t) -1);
But since e->state is changed by another thread it
should be marked volatile to avoid compiler thinking
the state doesn't get changed.
diff --git a/src/libsystemd/sd-event/sd-event.c
b/src/libsystemd/sd-event/sd-event.c
index 5adbceeb0247..b7be2472a398 100644
--- a/src/libsystemd/sd-event/sd-event.c
+++ b/src/libsystemd/sd-event/sd-event.c
@@ -90,7 +90,7 @@ struct sd_event {
uint64_t iteration;
triple_timestamp timestamp;
- int state;
+ volatile int state;
bool exit_requested:1;
bool need_process_child:1;
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