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-rw-r--r--tools/lib/h5tools_ref.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/lib/h5tools_ref.c b/tools/lib/h5tools_ref.c
index e000080..16a949d 100644
--- a/tools/lib/h5tools_ref.c
+++ b/tools/lib/h5tools_ref.c
@@ -164,7 +164,8 @@ haddr_t
ref_path_table_lookup(const char *thepath)
{
H5O_info_t oi;
-
+ if((HDstrlen(thepath) == 0) || (thepath == NULL))
+ return HADDR_UNDEF;
/* Allow lookups on the root group, even though it doesn't have any link info */
if(HDstrcmp(thepath, "/")) {
H5L_info_t li;