Add new H5R API that abstracts object, region and attribute reference types

Also support references to external files

Add new H5T_REF type and type conversion routines

Support conversion from H5T_REF_OBJ/DSET_REG to H5T_REF

Add H5Treclaim() API to reclaim memory of vlen/reference types

Deprecate H5Dvlen_reclaim()

Fix H5T_vlen_reclaim() and H5T_reclaim() to use private callback

Add H5T_ref_reclaim()

Move previous H5R APIs to H5Rdeprec.c

Clean up H5Ocopy

Separate H5O_copy_expand_ref() to H5Ocopy_ref()

Add support for copying new reference types

Clean up deprecated routines to go through VOL and same code path

Fix return codes in existing trefer.c test

Rename trefer.c to trefer_deprec.c

trefer.c is for new references

Add performance test for trefer

Add additional obj_copy_ref test

Make use of tokens and blobs to store references

Skip blob encoding for object references

Start adding new reference examples

1 files changed, 2 insertions, 3 deletions

diff --git a/src/H5S.c b/src/H5S.c
index d9cfdeb..9eda3ae 100644
--- a/src/H5S.c
+++ b/src/H5S.c
@@ -1356,7 +1356,6 @@ H5S_set_extent_simple(H5S_t *space, unsigned rank, const hsize_t *dims,
 
     /* Check args */
     HDassert(rank <= H5S_MAX_RANK);
-    HDassert(0 == rank || dims);
 
     /* shift out of the previous state to a "simple" dataspace.  */
     if(H5S__extent_release(&space->extent) < 0)
@@ -1377,7 +1376,7 @@ H5S_set_extent_simple(H5S_t *space, unsigned rank, const hsize_t *dims,
         space->extent.size = (hsize_t *)H5FL_ARR_MALLOC(hsize_t, (size_t)rank);
 
         /* Copy the dimensions & compute the number of elements in the extent */
-        for(u = 0, nelem = 1; u < space->extent.rank; u++) {
+        for(u = 0, nelem = 1; dims && (u < space->extent.rank); u++) {
             space->extent.size[u] = dims[u];
             nelem *= dims[u];
         } /* end for */
@@ -1389,7 +1388,7 @@ H5S_set_extent_simple(H5S_t *space, unsigned rank, const hsize_t *dims,
         if(max != NULL)
             H5MM_memcpy(space->extent.max, max, sizeof(hsize_t) * rank);
         else
-            for(u = 0; u < space->extent.rank; u++)
+            for(u = 0; dims && (u < space->extent.rank); u++)
                 space->extent.max[u] = dims[u];
     } /* end else */