diff -ru trunk-orig/libgomp/plugin/plugin-nvptx.c trunk-work/libgomp/plugin/plugin-nvptx.c
--- trunk-orig/libgomp/plugin/plugin-nvptx.c	2018-12-18 18:16:57.804871502 +0800
+++ trunk-work/libgomp/plugin/plugin-nvptx.c	2018-12-18 22:07:43.483068743 +0800
@@ -1364,16 +1364,12 @@
 struct goacc_asyncqueue *
 GOMP_OFFLOAD_openacc_async_construct (void)
 {
+  CUstream stream = NULL;
+  CUDA_CALL_ERET (NULL, cuStreamCreate, &stream, CU_STREAM_DEFAULT);
+
   struct goacc_asyncqueue *aq
     = GOMP_PLUGIN_malloc (sizeof (struct goacc_asyncqueue));
-  aq->cuda_stream = NULL;
-  CUDA_CALL_ASSERT (cuStreamCreate, &aq->cuda_stream, CU_STREAM_DEFAULT);
-  if (aq->cuda_stream == NULL)
-    GOMP_PLUGIN_fatal ("CUDA stream create NULL\n");
-
-  CUDA_CALL_ASSERT (cuStreamSynchronize, aq->cuda_stream);
-
-
+  aq->cuda_stream = stream;
   return aq;
 }