[Beignet] [PATCH] fix clEnqueueMarkerWithWaitList bug when input event is null.

[xionghu.luo at intel.com]

From: Luo <xionghu.luo at intel.com>

---
 src/cl_api.c   |  5 +----
 src/cl_event.c | 11 ++++++++---
 2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/src/cl_api.c b/src/cl_api.c
index 2f287e3..c4a8730 100644
--- a/src/cl_api.c
+++ b/src/cl_api.c
@@ -2992,10 +2992,7 @@ clEnqueueMarkerWithWaitList(cl_command_queue command_queue,
 {
   cl_int err = CL_SUCCESS;
   CHECK_QUEUE(command_queue);
-  if(event == NULL) {
-    err = CL_INVALID_VALUE;
-    goto error;
-  }
+
   TRY(cl_event_check_waitlist, num_events_in_wait_list, event_wait_list, event, command_queue->ctx);
 
   cl_event_marker_with_wait_list(command_queue, num_events_in_wait_list, event_wait_list, event);
diff --git a/src/cl_event.c b/src/cl_event.c
index c93d245..76d6760 100644
--- a/src/cl_event.c
+++ b/src/cl_event.c
@@ -476,11 +476,16 @@ cl_int cl_event_marker_with_wait_list(cl_command_queue queue,
                 cl_event* event)
 {
   enqueue_data data = { 0 };
+  cl_event e;
 
-  *event = cl_event_new(queue->ctx, queue, CL_COMMAND_MARKER, CL_TRUE);
-  if(event == NULL)
+  e = cl_event_new(queue->ctx, queue, CL_COMMAND_MARKER, CL_TRUE);
+  if(e == NULL)
     return CL_OUT_OF_HOST_MEMORY;
 
+  if(event != NULL ){
+    *event = e;
+  }
+
 //enqueues a marker command which waits for either a list of events to complete, or if the list is
 //empty it waits for all commands previously enqueued in command_queue to complete before it  completes.
   if(num_events_in_wait_list > 0){
@@ -499,7 +504,7 @@ cl_int cl_event_marker_with_wait_list(cl_command_queue queue,
     cl_gpgpu_event_update_status(queue->last_event->gpgpu_event, 1);
   }
 
-  cl_event_set_status(*event, CL_COMPLETE);
+  cl_event_set_status(e, CL_COMPLETE);
   return CL_SUCCESS;
 }
 
-- 
1.8.1.2