1 files changed, 6 insertions, 2 deletions
diff --git a/tools/lib/h5diff_dset.c b/tools/lib/h5diff_dset.c
index 4826a7f..a295585 100644
--- a/tools/lib/h5diff_dset.c
+++ b/tools/lib/h5diff_dset.c
@@ -452,8 +452,12 @@ hsize_t diff_datasetid( hid_t did1,
             */
             sm_nbytes = p_type_nbytes;
             
-            for (i = rank1; i > 0; --i) {
-                sm_size[i - 1] = MIN(dims1[i - 1], H5TOOLS_BUFSIZE / sm_nbytes);
+            for (i = rank1; i > 0; --i) 
+            {
+                hsize_t size = H5TOOLS_BUFSIZE / sm_nbytes;
+                if ( size == 0) /* datum size > H5TOOLS_BUFSIZE */
+                    size = 1;
+                sm_size[i - 1] = MIN(dims1[i - 1], size);
                 sm_nbytes *= sm_size[i - 1];
                 assert(sm_nbytes > 0);
             }