* Reverted removal of H5I_REFERENCE to avoid breaking binary

  compatibility.
* Added a quick H5I_REFERENCE smoke check to test_misc19()
  in tmisc.c.

3 files changed, 32 insertions, 0 deletions

diff --git a/test/links.c b/test/links.c
index 2d9bb0d..7b3e37d 100644
--- a/test/links.c
+++ b/test/links.c
@@ -7743,6 +7743,7 @@ done:
             case H5I_FILE:
             case H5I_DATASPACE:
             case H5I_ATTR:
+            case H5I_REFERENCE:
             case H5I_VFL:
             case H5I_GENPROP_CLS:
             case H5I_GENPROP_LST:
@@ -7829,6 +7830,7 @@ done:
             case H5I_FILE:
             case H5I_DATASPACE:
             case H5I_ATTR:
+            case H5I_REFERENCE:
             case H5I_VFL:
             case H5I_GENPROP_CLS:
             case H5I_GENPROP_LST:
diff --git a/test/tfile.c b/test/tfile.c
index 20b41e0..533bb24 100644
--- a/test/tfile.c
+++ b/test/tfile.c
@@ -1393,6 +1393,7 @@ test_obj_count_and_id(hid_t fid1, hid_t fid2, hid_t did, hid_t gid1,
                     case H5I_DATATYPE:
                     case H5I_DATASPACE:
                     case H5I_ATTR:
+                    case H5I_REFERENCE:
                     case H5I_VFL:
                     case H5I_GENPROP_CLS:
                     case H5I_GENPROP_LST:
diff --git a/test/tmisc.c b/test/tmisc.c
index bec80b2..22ae558 100644
--- a/test/tmisc.c
+++ b/test/tmisc.c
@@ -30,6 +30,7 @@
 #include "testhdf5.h"
 #include "H5srcdir.h"
 #include "H5Dpkg.h"         /* Datasets                 */
+#include "H5Iprivate.h"     /* IDs, can be removed when H5I_REFERENCE is gone */
 
 /* Definitions for misc. test #1 */
 #define MISC1_FILE  "tmisc1.h5"
@@ -3447,6 +3448,34 @@ test_misc19(void)
 
     HDfree(vfd_cls);
 
+/* Check H5I operations on references */
+
+    /* Reference IDs are not used by the library so there's no
+     * way of testing if incr/decr, etc. work. Instead, just
+     * do a quick smoke check to ensure that a couple of basic
+     * calls return sane values.
+     *
+     * H5I_REFERENCE has been declared deprecated with a tentative
+     * removal version of HDF5 1.12.0.
+     *
+     * Delete this entire block when H5I_REFERENCE no longer exists.
+     *
+     * The H5Iprivate.h header was included to support H5I_nmembers()
+     * so that can also probably be removed as well.
+     */
+{
+    htri_t tf;                      /* Boolean generic return   */
+    int64_t num_members;            /* Number of members in type */
+
+    tf = H5Itype_exists(H5I_REFERENCE);
+    VERIFY(tf, TRUE, "H5Itype_exists");
+
+    num_members = 999;
+    num_members = H5I_nmembers(H5I_REFERENCE);
+    VERIFY(num_members, 0, "H5Inmembers");
+
+} /* end block */
+
 } /* end test_misc19() */
 
 /****************************************************************