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-rw-r--r--src/H5FDmpio.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/H5FDmpio.c b/src/H5FDmpio.c
index a898786..ee3277d 100644
--- a/src/H5FDmpio.c
+++ b/src/H5FDmpio.c
@@ -1730,6 +1730,9 @@ H5FD_mpio_write(H5FD_t *_file, H5FD_mem_t type, hid_t H5_ATTR_UNUSED dxpl_id,
HDassert(H5FD_MPIO==file->pub.driver_id);
HDassert(buf);
+ /* Verify that no data is written when between MPI_Barrier()s during file flush */
+ HDassert(!H5CX_get_mpi_file_flushing());
+
/* Portably initialize MPI status variable */
HDmemset(&mpi_stat, 0, sizeof(MPI_Status));