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[L0] Fix event usage after delete during release #1787

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[L0] Fix event usage after delete during release #1787

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5 changes: 3 additions & 2 deletions source/adapters/level_zero/event.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1022,6 +1022,7 @@ ur_result_t urEventReleaseInternal(ur_event_handle_t Event) {

// Save pointer to the queue before deleting/resetting event.
auto Queue = Legacy(Event->UrQueue);
auto URQueue = Event->UrQueue;

// If the event was a timestamp recording, we try to evict its entry in the
// queue.
Expand Down Expand Up @@ -1053,8 +1054,8 @@ ur_result_t urEventReleaseInternal(ur_event_handle_t Event) {
// created so that we can avoid ur_queue_handle_t is released before the
// associated ur_event_handle_t is released. Here we have to decrement it so
// ur_queue_handle_t can be released successfully.
if (Event->UrQueue) {
UR_CALL(urQueueReleaseInternal(Event->UrQueue));
if (URQueue) {
UR_CALL(urQueueReleaseInternal(URQueue));
}

return UR_RESULT_SUCCESS;
Expand Down