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-rw-r--r--src/H5Dmpio.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/H5Dmpio.c b/src/H5Dmpio.c
index ee8bde2..467b1b7 100644
--- a/src/H5Dmpio.c
+++ b/src/H5Dmpio.c
@@ -2806,8 +2806,9 @@ H5D__chunk_redistribute_shared_chunks(const H5D_io_info_t *io_info, const H5D_ty
/* Sort the new list in order of previous owner so that each original owner of a chunk
* entry gets that entry back, with the possibly newly-modified "new_owner" field
*/
- HDqsort(shared_chunks_info_array, shared_chunks_info_array_num_entries,
- sizeof(H5D_filtered_collective_io_info_t), H5D__cmp_filtered_collective_io_info_entry_owner);
+ if(shared_chunks_info_array_num_entries > 1)
+ HDqsort(shared_chunks_info_array, shared_chunks_info_array_num_entries,
+ sizeof(H5D_filtered_collective_io_info_t), H5D__cmp_filtered_collective_io_info_entry_owner);
send_displacements[0] = 0;
for (i = 1; i < (size_t) mpi_size; i++)