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-rw-r--r--src/H5Dcompact.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/H5Dcompact.c b/src/H5Dcompact.c
index df61856..29401f8 100644
--- a/src/H5Dcompact.c
+++ b/src/H5Dcompact.c
@@ -559,9 +559,14 @@ H5D__compact_copy(H5F_t *f_src, H5O_storage_compact_t *_storage_src, H5F_t *f_ds
/* Check for expanding references */
if(cpy_info->expand_ref) {
size_t ref_count;
+ size_t src_dt_size; /* Source datatype size */
+
+ /* Determine largest datatype size */
+ if(0 == (src_dt_size = H5T_get_size(dt_src)))
+ HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "unable to determine datatype size")
/* Determine # of reference elements to copy */
- ref_count = storage_src->size / H5T_get_size(dt_src);
+ ref_count = storage_src->size / src_dt_size;
/* Copy objects referenced in source buffer to destination file and set destination elements */
if(H5O_copy_expand_ref(f_src, storage_src->buf, f_dst,