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-rw-r--r--src/H5Dchunk.c24
1 files changed, 12 insertions, 12 deletions
diff --git a/src/H5Dchunk.c b/src/H5Dchunk.c
index 22dc05a..7eeb866 100644
--- a/src/H5Dchunk.c
+++ b/src/H5Dchunk.c
@@ -949,7 +949,12 @@ H5D__chunk_init(H5F_t *f, const H5D_t *dset, hid_t dapl_id)
/* Initial scaled dimension sizes */
if(dset->shared->layout.u.chunk.dim[u] == 0)
HGOTO_ERROR(H5E_DATASET, H5E_BADVALUE, FAIL, "chunk size must be > 0, dim = %u ", u)
- rdcc->scaled_dims[u] = dset->shared->curr_dims[u] / dset->shared->layout.u.chunk.dim[u];
+
+ /* Make a special case when the dimension is 0 because (0 - 1) is a big number for unsigned integer */
+ if(dset->shared->curr_dims[u] == 0)
+ rdcc->scaled_dims[u] = 0;
+ else
+ rdcc->scaled_dims[u] = ((dset->shared->curr_dims[u] - 1) / dset->shared->layout.u.chunk.dim[u]) + 1;
if( !(scaled_power2up = H5VM_power2up(rdcc->scaled_dims[u])) )
HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "unable to get the next power of 2")
@@ -2799,6 +2804,7 @@ H5D__chunk_hash_val(const H5D_shared_t *shared, const hsize_t *scaled)
hsize_t val; /* Intermediate value */
unsigned ndims = shared->ndims; /* Rank of dataset */
unsigned ret = 0; /* Value to return */
+ unsigned u; /* Local index variable */
FUNC_ENTER_STATIC_NOERR
@@ -2809,17 +2815,11 @@ H5D__chunk_hash_val(const H5D_shared_t *shared, const hsize_t *scaled)
/* If the fastest changing dimension doesn't have enough entropy, use
* other dimensions too
*/
- if(ndims > 1 && shared->cache.chunk.scaled_dims[ndims - 1] <= shared->cache.chunk.nslots) {
- unsigned u; /* Local index variable */
-
- val = scaled[0];
- for(u = 1; u < ndims; u++) {
- val <<= shared->cache.chunk.scaled_encode_bits[u];
- val ^= scaled[u];
- } /* end for */
- } /* end if */
- else
- val = scaled[ndims - 1];
+ val = scaled[0];
+ for(u = 1; u < ndims; u++) {
+ val <<= shared->cache.chunk.scaled_encode_bits[u];
+ val ^= scaled[u];
+ } /* end for */
/* Modulo value against the number of array slots */
ret = (unsigned)(val % shared->cache.chunk.nslots);