Squashed commit of the token_refactoring branch:

27 files changed, 570 insertions, 376 deletions

diff --git a/tools/lib/h5diff.c b/tools/lib/h5diff.c
index d7fc991..870c256 100644
--- a/tools/lib/h5diff.c
+++ b/tools/lib/h5diff.c
@@ -276,7 +276,7 @@ build_match_list (const char *objname1, trav_info_t *info1, const char *objname2
 
     H5TOOLS_DEBUG("build_match_list start - errstat:%d", opts->err_stat);
     /* init */
-    trav_table_init(&table);
+    trav_table_init(info1->fid, &table);
     if (table == NULL) {
         H5TOOLS_INFO("Cannot create traverse table");
         H5TOOLS_GOTO_DONE_NO_RET();
@@ -314,10 +314,20 @@ build_match_list (const char *objname1, trav_info_t *info1, const char *objname2
                 trav_table_addflags(infile, path1_lp, info1->paths[curr1].type, table);
                 /* if the two point to the same target object,
                  * mark that in table */
-                if (info1->paths[curr1].fileno == info2->paths[curr2].fileno &&
-                    info1->paths[curr1].objno == info2->paths[curr2].objno) {
-                    idx = table->nobjs - 1;
-                    table->objs[idx].is_same_trgobj = 1;
+                if(info1->paths[curr1].fileno == info2->paths[curr2].fileno) {
+                    int token_cmp;
+
+                    if(H5Otoken_cmp(info1->fid, &info1->paths[curr1].obj_token,
+                            &info2->paths[curr2].obj_token, &token_cmp) < 0) {
+                        H5TOOLS_INFO("Failed to compare object tokens");
+                        opts->err_stat = H5DIFF_ERR;
+                        H5TOOLS_GOTO_DONE_NO_RET();
+                    }
+
+                    if(!token_cmp) {
+                        idx = table->nobjs - 1;
+                        table->objs[idx].is_same_trgobj = 1;
+                    }
                 }
             }
             curr1++;
@@ -382,7 +392,7 @@ done:
  * Purpose:  Call back function from h5trav_visit().
  *------------------------------------------------------------------------*/
 static herr_t
-trav_grp_objs(const char *path, const H5O_info_t *oinfo,
+trav_grp_objs(const char *path, const H5O_info2_t *oinfo,
         const char *already_visited, void *udata)
 {
     trav_info_visit_obj(path, oinfo, already_visited, udata);
@@ -397,7 +407,7 @@ trav_grp_objs(const char *path, const H5O_info_t *oinfo,
  *           Track and extra checkings while visiting all symbolic-links.
  *------------------------------------------------------------------------*/
 static herr_t
-trav_grp_symlinks(const char *path, const H5L_info_t *linfo, void *udata)
+trav_grp_symlinks(const char *path, const H5L_info2_t *linfo, void *udata)
 {
     trav_info_t   *tinfo = (trav_info_t *)udata;
     diff_opt_t    *opts = (diff_opt_t *)tinfo->opts;
@@ -523,7 +533,7 @@ h5diff(const char *fname1,
     h5trav_type_t obj1type = H5TRAV_TYPE_GROUP;
     h5trav_type_t obj2type = H5TRAV_TYPE_GROUP;
     /* for single object */
-    H5O_info_t    oinfo1, oinfo2; /* object info */
+    H5O_info2_t   oinfo1, oinfo2; /* object info */
     trav_info_t  *info1_obj = NULL;
     trav_info_t  *info2_obj = NULL;
     /* for group object */
@@ -533,8 +543,8 @@ h5diff(const char *fname1,
     trav_info_t  *info1_lp = NULL;
     trav_info_t  *info2_lp = NULL;
     /* link info from specified object */
-    H5L_info_t    src_linfo1;
-    H5L_info_t    src_linfo2;
+    H5L_info2_t   src_linfo1;
+    H5L_info2_t   src_linfo2;
     /* link info from member object */
     h5tool_link_info_t trg_linfo1;
     h5tool_link_info_t trg_linfo2;
@@ -635,7 +645,7 @@ h5diff(const char *fname1,
                 H5TOOLS_GOTO_ERROR(H5DIFF_ERR, "Error: Object could not be found");
             }
             /* get info from link */
-            if(H5Lget_info(file1_id, obj1fullname, &src_linfo1, H5P_DEFAULT) < 0) {
+            if(H5Lget_info2(file1_id, obj1fullname, &src_linfo1, H5P_DEFAULT) < 0) {
                 parallel_print("Unable to get link info from <%s>\n", obj1fullname);
                 H5TOOLS_GOTO_ERROR(H5DIFF_ERR, "H5Lget_info failed");
             }
@@ -651,14 +661,14 @@ h5diff(const char *fname1,
                 /* optional data pass */
                 info1_obj->opts = (diff_opt_t*)opts;
 
-                if(H5Oget_info_by_name2(file1_id, obj1fullname, &oinfo1, H5O_INFO_BASIC, H5P_DEFAULT) < 0) {
+                if(H5Oget_info_by_name3(file1_id, obj1fullname, &oinfo1, H5O_INFO_BASIC, H5P_DEFAULT) < 0) {
                     parallel_print("Error: Could not get file contents\n");
                     H5TOOLS_GOTO_ERROR(H5DIFF_ERR, "Error: Could not get file contents");
                 }
                 obj1type = (h5trav_type_t)oinfo1.type;
                 trav_info_add(info1_obj, obj1fullname, obj1type);
                 idx = info1_obj->nused - 1;
-                info1_obj->paths[idx].objno = oinfo1.addr;
+                HDmemcpy(&info1_obj->paths[idx].obj_token, &oinfo1.token, sizeof(H5O_token_t));
                 info1_obj->paths[idx].fileno = oinfo1.fileno;
             }
             else if (src_linfo1.type == H5L_TYPE_SOFT) {
@@ -685,7 +695,7 @@ h5diff(const char *fname1,
                 H5TOOLS_GOTO_ERROR(H5DIFF_ERR, "Error: Object could not be found");
             }
             /* get info from link */
-            if(H5Lget_info(file2_id, obj2fullname, &src_linfo2, H5P_DEFAULT) < 0) {
+            if(H5Lget_info2(file2_id, obj2fullname, &src_linfo2, H5P_DEFAULT) < 0) {
                 parallel_print("Unable to get link info from <%s>\n", obj2fullname);
                 H5TOOLS_GOTO_ERROR(H5DIFF_ERR, "H5Lget_info failed");
             }
@@ -701,14 +711,14 @@ h5diff(const char *fname1,
                 /* optional data pass */
                 info2_obj->opts = (diff_opt_t*)opts;
 
-                if(H5Oget_info_by_name2(file2_id, obj2fullname, &oinfo2, H5O_INFO_BASIC, H5P_DEFAULT) < 0) {
+                if(H5Oget_info_by_name3(file2_id, obj2fullname, &oinfo2, H5O_INFO_BASIC, H5P_DEFAULT) < 0) {
                     parallel_print("Error: Could not get file contents\n");
                     H5TOOLS_GOTO_ERROR(H5DIFF_ERR, "Error: Could not get file contents");
                 }
                 obj2type = (h5trav_type_t)oinfo2.type;
                 trav_info_add(info2_obj, obj2fullname, obj2type);
                 idx = info2_obj->nused - 1;
-                info2_obj->paths[idx].objno = oinfo2.addr;
+                HDmemcpy(&info2_obj->paths[idx].obj_token, &oinfo2.token, sizeof(H5O_token_t));
                 info2_obj->paths[idx].fileno = oinfo2.fileno;
             }
             else if (src_linfo2.type == H5L_TYPE_SOFT) {
@@ -778,8 +788,8 @@ h5diff(const char *fname1,
                 size_t idx = info1_lp->nused - 1;
 
                 H5TOOLS_DEBUG("h5diff ... ... ... info1_obj not null");
+                HDmemcpy(&info1_lp->paths[idx].obj_token, &trg_linfo1.obj_token, sizeof(H5O_token_t));
                 info1_lp->paths[idx].type = (h5trav_type_t)trg_linfo1.trg_type;
-                info1_lp->paths[idx].objno = trg_linfo1.objno;
                 info1_lp->paths[idx].fileno = trg_linfo1.fileno;
             }
             H5TOOLS_DEBUG("h5diff check symbolic link (object1) finished");
@@ -818,8 +828,8 @@ h5diff(const char *fname1,
                 size_t idx = info2_lp->nused - 1;
 
                 H5TOOLS_DEBUG("h5diff ... ... ... info2_obj not null");
+                HDmemcpy(&info2_lp->paths[idx].obj_token, &trg_linfo2.obj_token, sizeof(H5O_token_t));
                 info2_lp->paths[idx].type = (h5trav_type_t)trg_linfo2.trg_type;
-                info2_lp->paths[idx].objno = trg_linfo2.objno;
                 info2_lp->paths[idx].fileno = trg_linfo2.fileno;
             }
             H5TOOLS_DEBUG("h5diff check symbolic link (object1) finished");
diff --git a/tools/lib/h5diff_array.c b/tools/lib/h5diff_array.c
index f671b06..8321a98 100644
--- a/tools/lib/h5diff_array.c
+++ b/tools/lib/h5diff_array.c
@@ -746,8 +746,8 @@ static hsize_t diff_datum(
                 /* if (type_size == H5R_STD_REF_SIZE) */
                 hid_t region1_id = H5I_INVALID_HID;
                 hid_t region2_id = H5I_INVALID_HID;
-                H5R_ref_t *ref1_buf = (const H5R_ref_t *)_mem1;
-                H5R_ref_t *ref2_buf = (const H5R_ref_t *)_mem2;
+                H5R_ref_t *ref1_buf = (H5R_ref_t *)_mem1;
+                H5R_ref_t *ref2_buf = (H5R_ref_t *)_mem2;
                 H5O_type_t obj1_type = -1;   /* Object type */
                 H5O_type_t obj2_type = -1;   /* Object type */
                 H5R_type_t ref_type;   /* Reference type */
@@ -920,7 +920,7 @@ static hsize_t diff_datum(
                         /* if (obj_id < 0) - could mean that no reference was written do not throw failure */
                         obj1_id = H5Ropen_object(ref1_buf, H5P_DEFAULT, H5P_DEFAULT);
                         obj2_id = H5Ropen_object(ref2_buf, H5P_DEFAULT, H5P_DEFAULT);
-                        if((obj1_id  < 0) || (obj1_id  < 0)) {
+                        if((obj1_id  < 0) || (obj2_id  < 0)) {
                             H5TOOLS_INFO("H5Ropen_object H5R_DATASET_REGION2 failed");
                         }
                         else {
@@ -979,7 +979,7 @@ static hsize_t diff_datum(
                                 H5TOOLS_INFO("H5Ropen_attr object 2 failed");
                             }
 
-                            if((obj1_id  < 0) || (obj1_id  < 0)) {
+                            if((obj1_id < 0) || (obj2_id < 0)) {
                                 H5TOOLS_INFO("H5Ropen_attr H5R_ATTR failed");
                             }
                             else {
@@ -2394,14 +2394,22 @@ static hsize_t diff_region(hid_t obj1_id, hid_t obj2_id, hid_t region1_id, hid_t
 
                 /* print differences if found */
                 if (nfound_b && opts->m_verbose) {
-                    H5O_info_t oi1, oi2;
+                    H5O_info2_t oi1, oi2;
+                    char *obj1_str = NULL, *obj2_str = NULL;
 
-                    H5Oget_info2(obj1_id, &oi1, H5O_INFO_BASIC);
-                    H5Oget_info2(obj2_id, &oi2, H5O_INFO_BASIC);
+                    H5Oget_info3(obj1_id, &oi1, H5O_INFO_BASIC);
+                    H5Oget_info3(obj2_id, &oi2, H5O_INFO_BASIC);
 
-                    parallel_print("Referenced dataset      %lu            %lu\n", (unsigned long) oi1.addr, (unsigned long) oi2.addr);
+                    /* Convert object tokens into printable output */
+                    H5Otoken_to_str(obj1_id, &oi1.token, &obj1_str);
+                    H5Otoken_to_str(obj2_id, &oi2.token, &obj2_str);
+
+                    parallel_print("Referenced dataset      %s            %s\n", obj1_str, obj2_str);
                     parallel_print( "------------------------------------------------------------\n");
 
+                    H5free_memory(obj1_str);
+                    H5free_memory(obj2_str);
+
                     parallel_print("Region blocks\n");
                     for (i = 0; i < nblocks1; i++) {
                         parallel_print("block #%d", i);
diff --git a/tools/lib/h5diff_attr.c b/tools/lib/h5diff_attr.c
index e92e141..d1b4697 100644
--- a/tools/lib/h5diff_attr.c
+++ b/tools/lib/h5diff_attr.c
@@ -140,7 +140,7 @@ static void table_attr_mark_exist(unsigned *exist, char *name, table_attrs_t *ta
 static herr_t build_match_list_attrs(hid_t loc1_id, hid_t loc2_id, table_attrs_t ** table_out,  diff_opt_t *opts)
 {
     table_attrs_t *table_lp = NULL;
-    H5O_info_t     oinfo1, oinfo2;    /* Object info */
+    H5O_info2_t    oinfo1, oinfo2;    /* Object info */
     hid_t          attr1_id = H5I_INVALID_HID;     /* attr ID */
     hid_t          attr2_id = H5I_INVALID_HID;     /* attr ID */
     size_t         curr1 = 0;
@@ -155,14 +155,14 @@ static herr_t build_match_list_attrs(hid_t loc1_id, hid_t loc2_id, table_attrs_t
 
     H5TOOLS_DEBUG("build_match_list_attrs start - errstat:%d", opts->err_stat);
 
-    if(H5Oget_info2(loc1_id, &oinfo1, H5O_INFO_NUM_ATTRS) < 0) {
+    if(H5Oget_info3(loc1_id, &oinfo1, H5O_INFO_NUM_ATTRS) < 0) {
         H5TOOLS_GOTO_ERROR(FAIL, "H5Oget_info first object failed");
     }
-    H5TOOLS_DEBUG("H5Oget_info2 loc1id=%d", oinfo1.num_attrs);
-    if(H5Oget_info2(loc2_id, &oinfo2, H5O_INFO_NUM_ATTRS) < 0) {
+    H5TOOLS_DEBUG("H5Oget_info3 loc1id=%d", oinfo1.num_attrs);
+    if(H5Oget_info3(loc2_id, &oinfo2, H5O_INFO_NUM_ATTRS) < 0) {
         H5TOOLS_GOTO_ERROR(FAIL, "H5Oget_info second object failed");
     }
-    H5TOOLS_DEBUG("H5Oget_info2 loc2id=%d", oinfo2.num_attrs);
+    H5TOOLS_DEBUG("H5Oget_info3 loc2id=%d", oinfo2.num_attrs);
 
     table_attrs_init(&table_lp);
     if (table_lp == NULL)
@@ -336,7 +336,6 @@ hsize_t diff_attr_data(hid_t attr1_id, hid_t attr2_id, const char *name1, const
     hsize_t    dims2[H5S_MAX_RANK];    /* dimensions of dataset */
     char       np1[512];
     char       np2[512];
-    unsigned   u;                 /* Local index variable */
     hsize_t    nfound = 0;
     int        j;
     diff_err_t ret_value = opts->err_stat;
diff --git a/tools/lib/h5tools.c b/tools/lib/h5tools.c
index 7aa2419..cb9b92c 100644
--- a/tools/lib/h5tools.c
+++ b/tools/lib/h5tools.c
@@ -1480,8 +1480,6 @@ render_bin_output(FILE *stream, hid_t container, hid_t tid, void *_mem,  hsize_t
             break;
     } /* end switch */
 
-done:
-
 CATCH
     H5TOOLS_ENDDEBUG("exit");
     return ret_value;
@@ -1806,21 +1804,27 @@ hbool_t
 h5tools_is_obj_same(hid_t loc_id1, const char *name1,
                     hid_t loc_id2, const char *name2)
 {
-    H5O_info_t oinfo1,  oinfo2;
+    H5O_info2_t oinfo1, oinfo2;
     hbool_t ret_val = FALSE;
 
     if ( name1 && HDstrcmp(name1, "."))
-      H5Oget_info_by_name2(loc_id1, name1, &oinfo1, H5O_INFO_BASIC, H5P_DEFAULT);
+      H5Oget_info_by_name3(loc_id1, name1, &oinfo1, H5O_INFO_BASIC, H5P_DEFAULT);
     else
-      H5Oget_info2(loc_id1, &oinfo1, H5O_INFO_BASIC);
+      H5Oget_info3(loc_id1, &oinfo1, H5O_INFO_BASIC);
 
     if ( name2 && HDstrcmp(name2, "."))
-      H5Oget_info_by_name2(loc_id2, name2, &oinfo2, H5O_INFO_BASIC, H5P_DEFAULT);
+      H5Oget_info_by_name3(loc_id2, name2, &oinfo2, H5O_INFO_BASIC, H5P_DEFAULT);
     else
-      H5Oget_info2(loc_id2, &oinfo2, H5O_INFO_BASIC);
+      H5Oget_info3(loc_id2, &oinfo2, H5O_INFO_BASIC);
+
+    if (oinfo1.fileno == oinfo2.fileno) {
+        int token_cmp_val;
 
-    if (oinfo1.fileno == oinfo2.fileno && oinfo1.addr==oinfo2.addr)
-      ret_val = TRUE;
+        H5Otoken_cmp(loc_id1, &oinfo1.token, &oinfo2.token, &token_cmp_val);
+
+        if(!token_cmp_val)
+            ret_val = TRUE;
+    }
 
     return ret_val;
 }
diff --git a/tools/lib/h5tools_dump.c b/tools/lib/h5tools_dump.c
index 3af2bd8..79802c3 100644
--- a/tools/lib/h5tools_dump.c
+++ b/tools/lib/h5tools_dump.c
@@ -2088,15 +2088,20 @@ h5tools_print_datatype(FILE *stream, h5tools_str_t *buffer, const h5tool_format_
     if((type_class = H5Tget_class(type)) < 0)
         H5TOOLS_THROW((-1), "H5Tget_class failed");
     if (object_search && H5Tcommitted(type) > 0) {
-        H5O_info_t  oinfo;
-        obj_t      *obj = NULL;    /* Found object */
+        H5O_info2_t  oinfo;
+        obj_t       *obj = NULL;    /* Found object */
 
-        H5Oget_info2(type, &oinfo, H5O_INFO_BASIC);
-        obj = search_obj(h5dump_type_table, oinfo.addr);
+        H5Oget_info3(type, &oinfo, H5O_INFO_BASIC);
+        obj = search_obj(h5dump_type_table, &oinfo.token);
 
         if(obj) {
-            if(!obj->recorded)
-                h5tools_str_append(buffer,"\"/#"H5_PRINTF_HADDR_FMT"\"", obj->objno);
+            if(!obj->recorded) {
+                char *obj_addr_str = NULL;
+
+                H5Otoken_to_str(type, &oinfo.token, &obj_addr_str);
+                h5tools_str_append(buffer,"\"/#%s\"", obj_addr_str);
+                H5free_memory(obj_addr_str);
+            }
             else
                 h5tools_str_append(buffer, "\"%s\"", obj->objname);
         }
@@ -2629,8 +2634,6 @@ h5tools_print_datatype(FILE *stream, h5tools_str_t *buffer, const h5tool_format_
         break;
     }
 
-done:
-
 CATCH
     H5TOOLS_ENDDEBUG("exit");
     return ret_value;
@@ -4052,7 +4055,7 @@ h5tools_dump_data(FILE *stream, const h5tool_format_t *info, h5tools_context_t *
             init_acc_pos(&datactx, total_size);
         datactx.need_prefix = TRUE;
 
-        if (NULL != (ref_buf = (H5R_ref_t *)HDcalloc(MAX(sizeof(unsigned), sizeof(H5R_ref_t)), ndims))) {
+        if (NULL != (ref_buf = (H5R_ref_t *)HDcalloc(MAX(sizeof(unsigned), sizeof(H5R_ref_t)), (size_t)ndims))) {
             if(obj_data) {
                 if(H5Dread(obj_id, H5T_STD_REF, H5S_ALL, H5S_ALL, H5P_DEFAULT, ref_buf) < 0) {
                     HDfree(ref_buf);
@@ -4067,7 +4070,7 @@ h5tools_dump_data(FILE *stream, const h5tool_format_t *info, h5tools_context_t *
                     H5TOOLS_GOTO_DONE_NO_RET();
                 }
             }
-            for(i = 0; i < ndims; i++, datactx.cur_elmt++, elmt_counter++) {
+            for(i = 0; i < (size_t)ndims; i++, datactx.cur_elmt++, elmt_counter++) {
                 H5O_type_t obj_type = -1;   /* Object type */
                 H5R_type_t ref_type;   /* Reference type */
 
diff --git a/tools/lib/h5tools_ref.c b/tools/lib/h5tools_ref.c
index e98a8e2..0e1fa03 100644
--- a/tools/lib/h5tools_ref.c
+++ b/tools/lib/h5tools_ref.c
@@ -17,6 +17,7 @@
 #include "h5tools.h"
 #include "h5tools_utils.h"
 #include "h5trav.h"
+#include "H5VLnative_private.h"
 
 
 /*
@@ -34,14 +35,14 @@
  */
 
 typedef struct {
-    haddr_t objno;      /* Object ID (i.e. address) */
-    char *path;         /* Object path */
+    H5O_token_t obj_token; /* Object token */
+    char *path;          /* Object path */
 } ref_path_node_t;
 
 static H5SL_t *ref_path_table = NULL;   /* the "table" (implemented with a skip list) */
 static hid_t thefile = (-1);
 
-static int ref_path_table_put(const char *, haddr_t objno);
+static int ref_path_table_put(const char *, const H5O_token_t *token);
 
 /*-------------------------------------------------------------------------
  * Function:    free_ref_path_info
@@ -80,19 +81,47 @@ free_ref_path_info(void *item, void H5_ATTR_UNUSED *key, void H5_ATTR_UNUSED *op
  *-------------------------------------------------------------------------
  */
 static herr_t
-init_ref_path_cb(const char *obj_name, const H5O_info_t *oinfo,
+init_ref_path_cb(const char *obj_name, const H5O_info2_t *oinfo,
     const char *already_seen, void H5_ATTR_UNUSED *_udata)
 {
     /* Check if the object is already in the path table */
     if(NULL == already_seen) {
         /* Insert the object into the path table */
-        ref_path_table_put(obj_name, oinfo->addr);
+        ref_path_table_put(obj_name, &oinfo->token);
     } /* end if */
 
     return 0;
 }
 
 /*-------------------------------------------------------------------------
+ * Function:    ref_path_table_cmp
+ *
+ * Purpose:     Skip list key comparison function which compares two
+ *              H5O_token_t objects.
+ *
+ * Return:      Negative (if token2 is greater than token1)
+ *              0 (if tokens are equal)
+ *              or
+ *              Positive (if token1 is greater than token2)
+ *
+ *-------------------------------------------------------------------------
+ */
+static int
+ref_path_table_cmp(const void *key1, const void *key2)
+{
+    const H5O_token_t *token1 = (const H5O_token_t *)key1;
+    const H5O_token_t *token2 = (const H5O_token_t *)key2;
+    int              cmp_value = 0;
+
+    if(thefile > 0)
+        H5Otoken_cmp(thefile, token1, token2, &cmp_value);
+    else
+        cmp_value = HDmemcmp(token1, token2, sizeof(H5O_token_t));
+
+    return cmp_value;
+}
+
+/*-------------------------------------------------------------------------
  * Function:    init_ref_path_table
  *
  * Purpose:     Initalize the reference path table
@@ -109,7 +138,7 @@ init_ref_path_table(void)
     /* Sanity check */
     if(thefile > 0) {
         /* Create skip list to store reference path information */
-        if((ref_path_table = H5SL_create(H5SL_TYPE_HADDR, NULL))==NULL)
+        if((ref_path_table = H5SL_create(H5SL_TYPE_GENERIC, ref_path_table_cmp)) == NULL)
             return (-1);
 
         /* Iterate over objects in this file */
@@ -153,8 +182,10 @@ term_ref_path_table(void)
  * Purpose:     Looks up a table entry given a path name.
  *              Used during construction of the table.
  *
- * Return:      The table entre (pte) or NULL if not in the
- *              table.
+ * Return:      Negative on failure, Non-negative on success. The object
+ *              token for the table entry is returned through the token
+ *              parameter if the table entry is found by the given path
+ *              name.
  *
  * Programmer:  REMcG
  *
@@ -162,33 +193,35 @@ term_ref_path_table(void)
  *
  *-------------------------------------------------------------------------
  */
-haddr_t
-ref_path_table_lookup(const char *thepath)
+int
+ref_path_table_lookup(const char *thepath, H5O_token_t *token)
 {
-    H5O_info_t  oi;
+    H5O_info2_t oi;
 
     if((thepath == NULL) || (HDstrlen(thepath) == 0))
-        return HADDR_UNDEF;
+        return -1;
     /* Allow lookups on the root group, even though it doesn't have any link info */
     if(HDstrcmp(thepath, "/")) {
-        H5L_info_t  li;
+        H5L_info2_t  li;
 
         /* Check for external link first, so we don't return the OID of an object in another file */
-        if(H5Lget_info(thefile, thepath, &li, H5P_DEFAULT) < 0)
-            return HADDR_UNDEF;
+        if(H5Lget_info2(thefile, thepath, &li, H5P_DEFAULT) < 0)
+            return -1;
 
         /* UD links can't be followed, so they always "dangle" like soft links.  */
         if(li.type >= H5L_TYPE_UD_MIN)
-            return HADDR_UNDEF;
+            return -1;
     } /* end if */
 
     /* Get the object info now */
     /* (returns failure for dangling soft links) */
-    if(H5Oget_info_by_name2(thefile, thepath, &oi, H5O_INFO_BASIC, H5P_DEFAULT) < 0)
-        return HADDR_UNDEF;
+    if(H5Oget_info_by_name3(thefile, thepath, &oi, H5O_INFO_BASIC, H5P_DEFAULT) < 0)
+        return -1;
 
-    /* Return OID */
-    return(oi.addr);
+    /* Return object token through parameter */
+    HDmemcpy(token, &oi.token, sizeof(H5O_token_t));
+
+    return 0;
 }
 
 /*-------------------------------------------------------------------------
@@ -211,7 +244,7 @@ ref_path_table_lookup(const char *thepath)
  *-------------------------------------------------------------------------
  */
 static int
-ref_path_table_put(const char *path, haddr_t objno)
+ref_path_table_put(const char *path, const H5O_token_t *token)
 {
     ref_path_node_t *new_node;
 
@@ -219,10 +252,10 @@ ref_path_table_put(const char *path, haddr_t objno)
         if((new_node = (ref_path_node_t *)HDmalloc(sizeof(ref_path_node_t))) == NULL)
             return(-1);
 
-        new_node->objno = objno;
+        HDmemcpy(&new_node->obj_token, token, sizeof(H5O_token_t));
         new_node->path = HDstrdup(path);
 
-        return(H5SL_insert(ref_path_table, new_node, &(new_node->objno)));
+        return(H5SL_insert(ref_path_table, new_node, &(new_node->obj_token)));
     }
     else
         return (-1);
@@ -239,46 +272,50 @@ int get_next_xid(void) {
 
 /*
  *  This counter is used to create fake object ID's
- *  The idea is to set it to the largest possible offest, which
+ *  The idea is to set it to the largest possible offset, which
  *  minimizes the chance of collision with a real object id.
  *
  */
 haddr_t fake_xid = HADDR_MAX;
-haddr_t
-get_fake_xid (void) {
-    return (fake_xid--);
+
+void
+get_fake_token(H5O_token_t *token) {
+    if(thefile > 0) {
+        /* TODO: potential for this to be called with non-native connector objects */
+        if(H5VLnative_addr_to_token(thefile, fake_xid, token) < 0)
+            *token = H5O_TOKEN_UNDEF;
+        fake_xid--;
+    }
+    else
+        *token = H5O_TOKEN_UNDEF;
 }
 
 /*
- * for an object that does not have an object id (e.g., soft link),
- * create a table entry with a fake object id as the key.
+ * for an object that does not have an object token (e.g., soft link),
+ * create a table entry with a fake object token as the key.
  *
  * Assumes 'path' is for an object that is not in the table.
  *
  */
 
-haddr_t
-ref_path_table_gen_fake(const char *path)
+void
+ref_path_table_gen_fake(const char *path, H5O_token_t *token)
 {
-    haddr_t fake_objno;
-
-    /* Generate fake ID for string */
-    fake_objno = get_fake_xid();
+    /* Generate fake object token for string */
+    get_fake_token(token);
 
     /* Create ref path table, if it hasn't already been created */
     if(ref_path_table == NULL)
         init_ref_path_table();
 
     /* Insert "fake" object into table */
-    ref_path_table_put(path, fake_objno);
-
-    return(fake_objno);
+    ref_path_table_put(path, token);
 }
 
 /*-------------------------------------------------------------------------
  * Function:    lookup_ref_path
  *
- * Purpose:     Lookup the path to the object with refernce 'ref'.
+ * Purpose:     Lookup the path to the object with the reference 'refbuf'.
  *
  * Return:      Return a path to the object, or NULL if not found.
  *
@@ -289,19 +326,48 @@ ref_path_table_gen_fake(const char *path)
  *-------------------------------------------------------------------------
  */
 const char *
-lookup_ref_path(haddr_t ref)
+lookup_ref_path(H5R_ref_t refbuf)
 {
+    H5O_info2_t oinfo;
+    H5R_type_t ref_type;
+    hid_t ref_object;
     ref_path_node_t *node;
 
     /* Be safer for h5ls */
     if(thefile < 0)
         return(NULL);
 
+    /* Retrieve reference type */
+    if(H5R_BADTYPE == (ref_type = H5Rget_type(&refbuf)))
+        return(NULL);
+
+    /* Open the referenced object */
+    switch (ref_type) {
+        case H5R_OBJECT1:
+        case H5R_OBJECT2:
+            if((ref_object = H5Ropen_object(&refbuf, H5P_DEFAULT, H5P_DEFAULT)) < 0)
+                return(NULL);
+            break;
+
+        /* Invalid referenced object type */
+        case H5R_DATASET_REGION1:
+        case H5R_DATASET_REGION2:
+        case H5R_ATTR:
+        case H5R_MAXTYPE:
+        case H5R_BADTYPE:
+        default:
+            return(NULL);
+    }
+
+    /* Retrieve info about the referenced object */
+    if(H5Oget_info3(ref_object, &oinfo, H5O_INFO_ALL) < 0)
+        return(NULL);
+
     /* Create ref path table, if it hasn't already been created */
     if(ref_path_table == NULL)
         init_ref_path_table();
 
-    node = (ref_path_node_t *)H5SL_search(ref_path_table, &ref);
+    node = (ref_path_node_t *)H5SL_search(ref_path_table, &oinfo.token);
 
     return(node ? node->path : NULL);
 }
diff --git a/tools/lib/h5tools_ref.h b/tools/lib/h5tools_ref.h
index b7bd9a3..debbea1 100644
--- a/tools/lib/h5tools_ref.h
+++ b/tools/lib/h5tools_ref.h
@@ -21,11 +21,11 @@ extern "C" {
 #endif
 
 H5TOOLS_DLL herr_t      fill_ref_path_table(hid_t fid);
-H5TOOLS_DLL const char *lookup_ref_path(haddr_t ref);
+H5TOOLS_DLL const char *lookup_ref_path(H5R_ref_t refbuf);
 H5TOOLS_DLL int         get_next_xid(void);
-H5TOOLS_DLL haddr_t     get_fake_xid(void);
-H5TOOLS_DLL haddr_t     ref_path_table_lookup(const char *);
-H5TOOLS_DLL haddr_t     ref_path_table_gen_fake(const char *);
+H5TOOLS_DLL void        get_fake_token(H5O_token_t *token);
+H5TOOLS_DLL int         ref_path_table_lookup(const char *thepath, H5O_token_t *token);
+H5TOOLS_DLL void        ref_path_table_gen_fake(const char *path, H5O_token_t *token);
 H5TOOLS_DLL int         term_ref_path_table(void);
 
 #ifdef __cplusplus
diff --git a/tools/lib/h5tools_str.c b/tools/lib/h5tools_str.c
index 0aa5152..c9e7e94 100644
--- a/tools/lib/h5tools_str.c
+++ b/tools/lib/h5tools_str.c
@@ -1091,7 +1091,7 @@ h5tools_str_sprint(h5tools_str_t *str, const h5tool_format_t *info, hid_t contai
                     if (H5Tequal(type, H5T_STD_REF)) {
                         H5O_type_t obj_type = -1;   /* Object type */
                         H5R_type_t ref_type;   /* Reference type */
-                        const H5R_ref_t *ref_vp = (const H5R_ref_t *)vp;
+                        H5R_ref_t *ref_vp = (H5R_ref_t *)vp;
 
                         H5TOOLS_DEBUG("H5T_REFERENCE:H5T_STD_REF");
                         ref_type = H5Rget_type(ref_vp);
@@ -1100,13 +1100,13 @@ h5tools_str_sprint(h5tools_str_t *str, const h5tool_format_t *info, hid_t contai
                             case H5R_OBJECT1:
                                 {
                                 /* Object references -- show the type and OID of the referenced object. */
-                                H5O_info_t  oi;
+                                H5O_info2_t oi;
+                                char *obj_addr_str = NULL;
 
                                 H5TOOLS_DEBUG("ref_type is H5R_OBJECT1");
                                 if((obj = H5Ropen_object(ref_vp, H5P_DEFAULT, H5P_DEFAULT)) >= 0) {
-                                    H5Oget_info2(obj, &oi, H5O_INFO_BASIC);
-                                    if(H5Oclose(obj) < 0)
-                                        H5TOOLS_ERROR(NULL, "H5Oclose H5R_OBJECT1 failed");
+                                    H5Oget_info3(obj, &oi, H5O_INFO_BASIC);
+                                    H5Otoken_to_str(obj, &oi.token, &obj_addr_str);
                                 }
                                 else
                                     H5TOOLS_ERROR(NULL, "H5Ropen_object H5R_OBJECT1 failed");
@@ -1132,20 +1132,30 @@ h5tools_str_sprint(h5tools_str_t *str, const h5tool_format_t *info, hid_t contai
                                         h5tools_str_append(str, "%u-%s", (unsigned) oi.type, H5_TOOLS_UNKNOWN);
                                         break;
                                 } /* end switch */
-                                H5Oclose(obj);
-                                h5tools_str_sprint_reference(str, info, container, ref_vp);
+
+                                h5tools_str_sprint_reference(str, ref_vp);
 
                                 /* Print OID */
                                 if(info->obj_hidefileno)
-                                    h5tools_str_append(str, info->obj_format, oi.addr);
+                                    h5tools_str_append(str, info->obj_format, obj_addr_str);
                                 else
-                                    h5tools_str_append(str, info->obj_format, oi.fileno, oi.addr);
+                                    h5tools_str_append(str, info->obj_format, oi.fileno, obj_addr_str);
+
+                                if(obj_addr_str) {
+                                    H5free_memory(obj_addr_str);
+                                    obj_addr_str = NULL;
                                 }
+
+                                if(obj >= 0)
+                                    if(H5Oclose(obj) < 0)
+                                        H5TOOLS_ERROR(NULL, "H5Oclose H5R_OBJECT1 failed");
+                                }
+
                                 break;
                             case H5R_DATASET_REGION1:
                                 H5TOOLS_DEBUG("ref_type is H5R_DATASET_REGION1");
                                 h5tools_str_append(str, H5_TOOLS_DATASET);
-                                h5tools_str_sprint_reference(str, info, container, ref_vp);
+                                h5tools_str_sprint_reference(str, ref_vp);
                                 break;
                             case H5R_OBJECT2:
                                 H5TOOLS_DEBUG("ref_type is H5R_OBJECT2");
@@ -1169,17 +1179,17 @@ h5tools_str_sprint(h5tools_str_t *str, const h5tool_format_t *info, hid_t contai
                                         h5tools_str_append(str, H5_TOOLS_UNKNOWN);
                                         break;
                                 } /* end switch */
-                                h5tools_str_sprint_reference(str, info, container, ref_vp);
+                                h5tools_str_sprint_reference(str, ref_vp);
                                 break;
                             case H5R_DATASET_REGION2:
                                 H5TOOLS_DEBUG("ref_type is H5R_DATASET_REGION2");
                                 h5tools_str_append(str, H5_TOOLS_DATASET);
-                                h5tools_str_sprint_reference(str, info, container, ref_vp);
+                                h5tools_str_sprint_reference(str, ref_vp);
                                 break;
                             case H5R_ATTR:
                                 H5TOOLS_DEBUG("ref_type is H5R_ATTR");
                                 h5tools_str_append(str, H5_TOOLS_ATTRIBUTE);
-                                h5tools_str_sprint_reference(str, info, container, ref_vp);
+                                h5tools_str_sprint_reference(str, ref_vp);
                                 break;
                             case H5R_BADTYPE:
                             case H5R_MAXTYPE:
@@ -1334,7 +1344,6 @@ h5tools_str_sprint(h5tools_str_t *str, const h5tool_format_t *info, hid_t contai
         } /* end switch */
     }
 
-done:
     ret_value = h5tools_str_fmt(str, start, OPT(info->elmt_fmt, "%s"));
 
     H5TOOLS_ENDDEBUG("exit with %s", ret_value);
@@ -1351,8 +1360,7 @@ done:
  *-------------------------------------------------------------------------
  */
 void
-h5tools_str_sprint_reference(h5tools_str_t *str, const h5tool_format_t *info,
-        hid_t container, H5R_ref_t *ref_vp)
+h5tools_str_sprint_reference(h5tools_str_t *str, H5R_ref_t *ref_vp)
 {
     ssize_t buf_size;
 
@@ -1363,7 +1371,7 @@ h5tools_str_sprint_reference(h5tools_str_t *str, const h5tool_format_t *info,
     H5TOOLS_DEBUG("buf_size=%ld", buf_size);
     if (buf_size) {
         char *file_name = (char *)HDmalloc(sizeof(char) * (size_t)buf_size + 1);
-        if (H5Rget_file_name(ref_vp, file_name, buf_size + 1) >= 0) {
+        if (H5Rget_file_name(ref_vp, file_name, (size_t)buf_size + 1) >= 0) {
             file_name[buf_size] = '\0';
             H5TOOLS_DEBUG("name=%s", file_name);
             h5tools_str_append(str, "%s", file_name);
@@ -1375,7 +1383,7 @@ h5tools_str_sprint_reference(h5tools_str_t *str, const h5tool_format_t *info,
     H5TOOLS_DEBUG("buf_size=%ld", buf_size);
     if (buf_size) {
         char *obj_name = (char *)HDmalloc(sizeof(char) * (size_t)buf_size + 1);
-        if (H5Rget_obj_name(ref_vp, H5P_DEFAULT, obj_name, buf_size + 1) >= 0) {
+        if (H5Rget_obj_name(ref_vp, H5P_DEFAULT, obj_name, (size_t)buf_size + 1) >= 0) {
             obj_name[buf_size] = '\0';
             H5TOOLS_DEBUG("name=%s", obj_name);
             h5tools_str_append(str, "%s", obj_name);
@@ -1388,7 +1396,7 @@ h5tools_str_sprint_reference(h5tools_str_t *str, const h5tool_format_t *info,
         H5TOOLS_DEBUG("buf_size=%ld", buf_size);
         if (buf_size) {
             char *attr_name = (char *)HDmalloc(sizeof(char) * (size_t)buf_size + 1);
-            if (H5Rget_attr_name(ref_vp, attr_name, buf_size + 1) >= 0) {
+            if (H5Rget_attr_name(ref_vp, attr_name, (size_t)buf_size + 1) >= 0) {
                 attr_name[buf_size] = '\0';
                 H5TOOLS_DEBUG("name=%s", attr_name);
                 h5tools_str_append(str, "/%s", attr_name);
diff --git a/tools/lib/h5tools_str.h b/tools/lib/h5tools_str.h
index 6fdf36a..02bfe40 100644
--- a/tools/lib/h5tools_str.h
+++ b/tools/lib/h5tools_str.h
@@ -41,7 +41,7 @@ H5TOOLS_DLL char    *h5tools_str_region_prefix(h5tools_str_t *str, const h5tool_
 H5TOOLS_DLL void     h5tools_str_dump_space_slabs(h5tools_str_t *, hid_t, const h5tool_format_t *, h5tools_context_t *ctx);
 H5TOOLS_DLL void     h5tools_str_dump_space_blocks(h5tools_str_t *, hid_t, const h5tool_format_t *);
 H5TOOLS_DLL void     h5tools_str_dump_space_points(h5tools_str_t *, hid_t, const h5tool_format_t *);
-H5TOOLS_DLL void     h5tools_str_sprint_reference(h5tools_str_t *str, const h5tool_format_t *info, hid_t container, H5R_ref_t *vp);
+H5TOOLS_DLL void     h5tools_str_sprint_reference(h5tools_str_t *str, H5R_ref_t *vp);
 H5TOOLS_DLL char    *h5tools_str_sprint(h5tools_str_t *str, const h5tool_format_t *info,
                                    hid_t container, hid_t type, void *vp,
                                    h5tools_context_t *ctx);
diff --git a/tools/lib/h5tools_utils.c b/tools/lib/h5tools_utils.c
index 323c9b3..45e436c 100644
--- a/tools/lib/h5tools_utils.c
+++ b/tools/lib/h5tools_utils.c
@@ -53,11 +53,11 @@ unsigned outBuffOffset;
 FILE*    overflow_file = NULL;
 
 /* local functions */
-static void init_table(table_t **tbl);
+static void init_table(hid_t fid, table_t **tbl);
 #ifdef H5DUMP_DEBUG
-static void dump_table(char* tablename, table_t *table);
+static void dump_table(hid_t fid, char* tablename, table_t *table);
 #endif  /* H5DUMP_DEBUG */
-static void add_obj(table_t *table, haddr_t objno, const char *objname, hbool_t recorded);
+static void add_obj(table_t *table, const H5O_token_t *obj_token, const char *objname, hbool_t recorded);
 
 /*-------------------------------------------------------------------------
  * Function: parallel_print
@@ -599,10 +599,11 @@ print_version(const char *progname)
  *-------------------------------------------------------------------------
  */
 static void
-init_table(table_t **tbl)
+init_table(hid_t fid, table_t **tbl)
 {
     table_t *table = (table_t *)HDmalloc(sizeof(table_t));
 
+    table->fid = fid;
     table->size = 20;
     table->nobjs = 0;
     table->objs = (obj_t *)HDmalloc(table->size * sizeof(obj_t));
@@ -644,15 +645,21 @@ free_table(table_t *table)
  *-------------------------------------------------------------------------
  */
 static void
-dump_table(char* tablename, table_t *table)
+dump_table(hid_t fid, char* tablename, table_t *table)
 {
     unsigned u;
+    char *obj_addr_str = NULL;
 
     PRINTSTREAM(rawoutstream,"%s: # of entries = %d\n", tablename,table->nobjs);
-    for (u = 0; u < table->nobjs; u++)
-        PRINTSTREAM(rawoutstream,"%a %s %d %d\n", table->objs[u].objno,
+    for (u = 0; u < table->nobjs; u++) {
+        H5VLconnector_token_to_str(fid, table->objs[u].obj_token, &obj_addr_str);
+
+        PRINTSTREAM(rawoutstream,"%s %s %d %d\n", obj_addr_str,
            table->objs[u].objname,
            table->objs[u].displayed, table->objs[u].recorded);
+
+        H5VLfree_token_str(fid, obj_addr_str);
+    }
 }
 
 
@@ -667,9 +674,9 @@ dump_table(char* tablename, table_t *table)
 void
 dump_tables(find_objs_t *info)
 {
-    dump_table("group_table", info->group_table);
-    dump_table("dset_table", info->dset_table);
-    dump_table("type_table", info->type_table);
+    dump_table(info->fid, "group_table", info->group_table);
+    dump_table(info->fid, "dset_table", info->dset_table);
+    dump_table(info->fid, "type_table", info->type_table);
 }
 #endif  /* H5DUMP_DEBUG */
 
@@ -685,13 +692,17 @@ dump_tables(find_objs_t *info)
  *-------------------------------------------------------------------------
  */
 H5_ATTR_PURE obj_t *
-search_obj(table_t *table, haddr_t objno)
+search_obj(table_t *table, const H5O_token_t *obj_token)
 {
     unsigned u;
+    int token_cmp;
 
-    for(u = 0; u < table->nobjs; u++)
-        if(table->objs[u].objno == objno)
+    for(u = 0; u < table->nobjs; u++) {
+        if(H5Otoken_cmp(table->fid, &table->objs[u].obj_token, obj_token, &token_cmp) < 0)
+            return NULL;
+        if(!token_cmp)
             return &(table->objs[u]);
+    }
 
     return NULL;
 }
@@ -708,7 +719,7 @@ search_obj(table_t *table, haddr_t objno)
  *-------------------------------------------------------------------------
  */
 static herr_t
-find_objs_cb(const char *name, const H5O_info_t *oinfo, const char *already_seen, void *op_data)
+find_objs_cb(const char *name, const H5O_info2_t *oinfo, const char *already_seen, void *op_data)
 {
     find_objs_t *info = (find_objs_t*)op_data;
     herr_t ret_value = 0;
@@ -716,7 +727,7 @@ find_objs_cb(const char *name, const H5O_info_t *oinfo, const char *already_seen
     switch(oinfo->type) {
         case H5O_TYPE_GROUP:
             if(NULL == already_seen)
-                add_obj(info->group_table, oinfo->addr, name, TRUE);
+                add_obj(info->group_table, &oinfo->token, name, TRUE);
             break;
 
         case H5O_TYPE_DATASET:
@@ -724,18 +735,18 @@ find_objs_cb(const char *name, const H5O_info_t *oinfo, const char *already_seen
                 hid_t dset = H5I_INVALID_HID;
 
                 /* Add the dataset to the list of objects */
-                add_obj(info->dset_table, oinfo->addr, name, TRUE);
+                add_obj(info->dset_table, &oinfo->token, name, TRUE);
 
                 /* Check for a dataset that uses a named datatype */
                 if((dset = H5Dopen2(info->fid, name, H5P_DEFAULT)) >= 0) {
                     hid_t type = H5Dget_type(dset);
 
                     if(H5Tcommitted(type) > 0) {
-                        H5O_info_t type_oinfo;
+                        H5O_info2_t type_oinfo;
 
-                        H5Oget_info2(type, &type_oinfo, H5O_INFO_BASIC);
-                        if(search_obj(info->type_table, type_oinfo.addr) == NULL)
-                            add_obj(info->type_table, type_oinfo.addr, name, FALSE);
+                        H5Oget_info3(type, &type_oinfo, H5O_INFO_BASIC);
+                        if(search_obj(info->type_table, &type_oinfo.token) == NULL)
+                            add_obj(info->type_table, &type_oinfo.token, name, FALSE);
                     } /* end if */
 
                     H5Tclose(type);
@@ -750,8 +761,8 @@ find_objs_cb(const char *name, const H5O_info_t *oinfo, const char *already_seen
             if(NULL == already_seen) {
                 obj_t *found_obj;
 
-                if((found_obj = search_obj(info->type_table, oinfo->addr)) == NULL)
-                    add_obj(info->type_table, oinfo->addr, name, TRUE);
+                if((found_obj = search_obj(info->type_table, &oinfo->token)) == NULL)
+                    add_obj(info->type_table, &oinfo->token, name, TRUE);
                 else {
                     /* Use latest version of name */
                     HDfree(found_obj->objname);
@@ -791,9 +802,9 @@ init_objs(hid_t fid, find_objs_t *info, table_t **group_table,
     herr_t ret_value = SUCCEED;
 
     /* Initialize the tables */
-    init_table(group_table);
-    init_table(dset_table);
-    init_table(type_table);
+    init_table(fid, group_table);
+    init_table(fid, dset_table);
+    init_table(fid, type_table);
 
     /* Init the find_objs_t */
     info->fid = fid;
@@ -829,7 +840,7 @@ done:
  *-------------------------------------------------------------------------
  */
 static void
-add_obj(table_t *table, haddr_t objno, const char *objname, hbool_t record)
+add_obj(table_t *table, const H5O_token_t *obj_token, const char *objname, hbool_t record)
 {
     size_t u;
 
@@ -843,7 +854,7 @@ add_obj(table_t *table, haddr_t objno, const char *objname, hbool_t record)
     u = table->nobjs++;
 
     /* Set information about object */
-    table->objs[u].objno = objno;
+    HDmemcpy(&table->objs[u].obj_token, obj_token, sizeof(H5O_token_t));
     table->objs[u].objname = HDstrdup(objname);
     table->objs[u].recorded = record;
     table->objs[u].displayed = 0;
@@ -893,7 +904,7 @@ int
 H5tools_get_symlink_info(hid_t file_id, const char * linkpath, h5tool_link_info_t *link_info, hbool_t get_obj_type)
 {
     htri_t l_ret;
-    H5O_info_t trg_oinfo;
+    H5O_info2_t trg_oinfo;
     hid_t fapl = H5P_DEFAULT;
     hid_t lapl = H5P_DEFAULT;
     int   ret_value = -1; /* init to fail */
@@ -915,7 +926,7 @@ H5tools_get_symlink_info(hid_t file_id, const char * linkpath, h5tool_link_info_
     } /* end if */
 
     /* get info from link */
-    if(H5Lget_info(file_id, linkpath, &(link_info->linfo), H5P_DEFAULT) < 0) {
+    if(H5Lget_info2(file_id, linkpath, &(link_info->linfo), H5P_DEFAULT) < 0) {
         if(link_info->opt.msg_mode == 1)
             parallel_print("Warning: unable to get link info from <%s>\n",linkpath);
         H5TOOLS_GOTO_DONE(FAIL);
@@ -971,7 +982,7 @@ H5tools_get_symlink_info(hid_t file_id, const char * linkpath, h5tool_link_info_
         }
 
         /* get target object info */
-        if(H5Oget_info_by_name2(file_id, linkpath, &trg_oinfo, H5O_INFO_BASIC, lapl) < 0) {
+        if(H5Oget_info_by_name3(file_id, linkpath, &trg_oinfo, H5O_INFO_BASIC, lapl) < 0) {
             if(link_info->opt.msg_mode == 1)
                 parallel_print("Warning: unable to get object information for <%s>\n", linkpath);
             H5TOOLS_GOTO_DONE(FAIL);
@@ -985,8 +996,8 @@ H5tools_get_symlink_info(hid_t file_id, const char * linkpath, h5tool_link_info_
         }  /* end if */
 
         /* set target obj type to return */
+        HDmemcpy(&link_info->obj_token, &trg_oinfo.token, sizeof(H5O_token_t));
         link_info->trg_type = trg_oinfo.type;
-        link_info->objno = trg_oinfo.addr;
         link_info->fileno = trg_oinfo.fileno;
     } /* end if */
     else
diff --git a/tools/lib/h5tools_utils.h b/tools/lib/h5tools_utils.h
index 17c16bf..366800a 100644
--- a/tools/lib/h5tools_utils.h
+++ b/tools/lib/h5tools_utils.h
@@ -95,14 +95,15 @@ H5TOOLS_DLL int get_option(int argc, const char **argv, const char *opt, const s
 
 /*struct taken from the dumper. needed in table struct*/
 typedef struct obj_t {
-    haddr_t objno;
-    char   *objname;
-    hbool_t displayed;          /* Flag to indicate that the object has been displayed */
-    hbool_t recorded;           /* Flag for named datatypes to indicate they were found in the group hierarchy */
+    H5O_token_t  obj_token;
+    char      *objname;
+    hbool_t    displayed;          /* Flag to indicate that the object has been displayed */
+    hbool_t    recorded;           /* Flag for named datatypes to indicate they were found in the group hierarchy */
 } obj_t;
 
 /*struct for the tables that the find_objs function uses*/
 typedef struct table_t {
+    hid_t fid;
     size_t size;
     size_t nobjs;
     obj_t *objs;
@@ -131,7 +132,7 @@ H5TOOLS_DLL void free_table(table_t *table);
 H5TOOLS_DLL void dump_tables(find_objs_t *info)
 #endif  /* H5DUMP_DEBUG */
 H5TOOLS_DLL herr_t init_objs(hid_t fid, find_objs_t *info, table_t **group_table, table_t **dset_table, table_t **type_table);
-H5TOOLS_DLL obj_t *search_obj(table_t *temp, haddr_t objno);
+H5TOOLS_DLL obj_t *search_obj(table_t *temp, const H5O_token_t *obj_token);
 #ifndef H5_HAVE_TMPFILE
 H5TOOLS_DLL FILE *tmpfile(void);
 #endif
@@ -158,9 +159,9 @@ typedef struct {
     H5O_type_t    trg_type;  /* OUT: target type */
     char         *trg_path;  /* OUT: target obj path. This must be freed
                               *      when used with H5tools_get_symlink_info() */
-    haddr_t       objno;     /* OUT: target object address */
+    H5O_token_t     obj_token; /* OUT: target object token */
     unsigned long fileno;    /* OUT: File number that target object is located in */
-    H5L_info_t    linfo;     /* OUT: link info */
+    H5L_info2_t   linfo;     /* OUT: link info */
     h5tool_opt_t  opt;       /* IN: options */
 } h5tool_link_info_t;
 
diff --git a/tools/lib/h5trav.c b/tools/lib/h5trav.c
index fb768a4..dc7e27d 100644
--- a/tools/lib/h5trav.c
+++ b/tools/lib/h5trav.c
@@ -21,7 +21,7 @@
  *-------------------------------------------------------------------------
  */
 typedef struct trav_addr_path_t {
-    haddr_t addr;
+    H5O_token_t token;
     char *path;
 } trav_addr_path_t;
 
@@ -43,7 +43,7 @@ typedef struct {
     hbool_t is_absolute;            /* Whether the traversal has absolute paths */
     const char *base_grp_name;      /* Name of the group that serves as the base
                                      * for iteration */
-    unsigned fields;                /* Fields needed in H5O_info_t struct */
+    unsigned fields;                /* Fields needed in H5O_info2_t struct */
 } trav_ud_traverse_t;
 
 typedef struct {
@@ -65,10 +65,10 @@ typedef struct trav_path_op_data_t {
  */
 static void trav_table_add(trav_table_t *table,
                         const char *objname,
-                        const H5O_info_t *oinfo);
+                        const H5O_info2_t *oinfo);
 
 static void trav_table_addlink(trav_table_t *table,
-                        haddr_t objno,
+                        const H5O_token_t *obj_token,
                         const char *path);
 
 /*-------------------------------------------------------------------------
@@ -116,15 +116,15 @@ h5trav_set_verbose(int print_verbose)
 
 
 /*-------------------------------------------------------------------------
- * Function: trav_addr_add
+ * Function: trav_token_add
  *
- * Purpose:  Add a hardlink address to visited data structure
+ * Purpose:  Add an object token to visited data structure
  *
  * Return:   void
  *-------------------------------------------------------------------------
  */
 static void
-trav_addr_add(trav_addr_t *visited, haddr_t addr, const char *path)
+trav_token_add(trav_addr_t *visited, H5O_token_t *token, const char *path)
 {
     size_t idx;         /* Index of address to use */
 
@@ -136,33 +136,37 @@ trav_addr_add(trav_addr_t *visited, haddr_t addr, const char *path)
 
     /* Append it */
     idx = visited->nused++;
-    visited->objs[idx].addr = addr;
+    HDmemcpy(&visited->objs[idx].token, token, sizeof(H5O_token_t));
     visited->objs[idx].path = HDstrdup(path);
-} /* end trav_addr_add() */
+} /* end trav_token_add() */
 
 
 /*-------------------------------------------------------------------------
- * Function: trav_addr_visited
+ * Function: trav_token_visited
  *
- * Purpose:  Check if an address has already been visited
+ * Purpose:  Check if an object token has already been seen
  *
  * Return:   TRUE/FALSE
  *-------------------------------------------------------------------------
  */
 H5_ATTR_PURE static const char *
-trav_addr_visited(trav_addr_t *visited, haddr_t addr)
+trav_token_visited(hid_t loc_id, trav_addr_t *visited, H5O_token_t *token)
 {
     size_t u;           /* Local index variable */
+    int token_cmp;
 
     /* Look for address */
-    for(u = 0; u < visited->nused; u++)
+    for(u = 0; u < visited->nused; u++) {
         /* Check for address already in array */
-        if(visited->objs[u].addr == addr)
+        if(H5Otoken_cmp(loc_id, &visited->objs[u].token, token, &token_cmp) < 0)
+            return NULL;
+        if(!token_cmp)
             return(visited->objs[u].path);
+    }
 
-    /* Didn't find address */
+    /* Didn't find object token */
     return(NULL);
-} /* end trav_addr_visited() */
+} /* end trav_token_visited() */
 
 
 /*-------------------------------------------------------------------------
@@ -172,7 +176,7 @@ trav_addr_visited(trav_addr_t *visited, haddr_t addr)
  *-------------------------------------------------------------------------
  */
 static herr_t
-traverse_cb(hid_t loc_id, const char *path, const H5L_info_t *linfo,
+traverse_cb(hid_t loc_id, const char *path, const H5L_info2_t *linfo,
     void *_udata)
 {
     trav_ud_traverse_t *udata = (trav_ud_traverse_t *)_udata;     /* User data */
@@ -199,10 +203,10 @@ traverse_cb(hid_t loc_id, const char *path, const H5L_info_t *linfo,
 
     /* Perform the correct action for different types of links */
     if(linfo->type == H5L_TYPE_HARD) {
-        H5O_info_t oinfo;
+        H5O_info2_t oinfo;
 
         /* Get information about the object */
-        if(H5Oget_info_by_name2(loc_id, path, &oinfo, udata->fields, H5P_DEFAULT) < 0) {
+        if(H5Oget_info_by_name3(loc_id, path, &oinfo, udata->fields, H5P_DEFAULT) < 0) {
             if(new_name)
                 HDfree(new_name);
             return(H5_ITER_ERROR);
@@ -212,8 +216,8 @@ traverse_cb(hid_t loc_id, const char *path, const H5L_info_t *linfo,
          *  already visited, if it isn't there already
          */
         if(oinfo.rc > 1)
-            if(NULL == (already_visited = trav_addr_visited(udata->seen, oinfo.addr)))
-                trav_addr_add(udata->seen, oinfo.addr, full_name);
+            if(NULL == (already_visited = trav_token_visited(loc_id, udata->seen, &oinfo.token)))
+                trav_token_add(udata->seen, &oinfo.token, full_name);
 
         /* Make 'visit object' callback */
         if(udata->visitor->visit_obj)
@@ -254,11 +258,11 @@ static int
 traverse(hid_t file_id, const char *grp_name, hbool_t visit_start,
         hbool_t recurse, const trav_visitor_t *visitor, unsigned fields)
 {
-    H5O_info_t  oinfo;          /* Object info for starting group */
+    H5O_info2_t oinfo;          /* Object info for starting group */
     int         ret_value = 0;
 
     /* Get info for starting object */
-    if(H5Oget_info_by_name2(file_id, grp_name, &oinfo, fields, H5P_DEFAULT) < 0)
+    if(H5Oget_info_by_name3(file_id, grp_name, &oinfo, fields, H5P_DEFAULT) < 0)
         H5TOOLS_GOTO_ERROR((-1), "H5Oget_info_by_name failed");
 
     /* Visit the starting object */
@@ -276,7 +280,7 @@ traverse(hid_t file_id, const char *grp_name, hbool_t visit_start,
 
         /* Check for multiple links to top group */
         if(oinfo.rc > 1)
-            trav_addr_add(&seen, oinfo.addr, grp_name);
+            trav_token_add(&seen, &oinfo.token, grp_name);
 
         /* Set up user data structure */
         udata.seen = &seen;
@@ -288,12 +292,12 @@ traverse(hid_t file_id, const char *grp_name, hbool_t visit_start,
         /* Check for iteration of links vs. visiting all links recursively */
         if(recurse) {
             /* Visit all links in group, recursively */
-            if(H5Lvisit_by_name(file_id, grp_name, trav_index_by, trav_index_order, traverse_cb, &udata, H5P_DEFAULT) < 0)
+            if(H5Lvisit_by_name2(file_id, grp_name, trav_index_by, trav_index_order, traverse_cb, &udata, H5P_DEFAULT) < 0)
                 H5TOOLS_GOTO_ERROR((-1), "H5Lvisit_by_name failed");
         } /* end if */
         else {
             /* Iterate over links in group */
-            if(H5Literate_by_name(file_id, grp_name, trav_index_by, trav_index_order, NULL, traverse_cb, &udata, H5P_DEFAULT) < 0)
+            if(H5Literate_by_name2(file_id, grp_name, trav_index_by, trav_index_order, NULL, traverse_cb, &udata, H5P_DEFAULT) < 0)
                 H5TOOLS_GOTO_ERROR((-1), "H5Literate_by_name failed");
         } /* end else */
 
@@ -338,7 +342,9 @@ trav_info_add(trav_info_t *info, const char *path, h5trav_type_t obj_type)
         info->paths[idx].path = HDstrdup(path);
         info->paths[idx].type = obj_type;
         info->paths[idx].fileno = 0;
-        info->paths[idx].objno = HADDR_UNDEF;
+
+        /* Set token to 'undefined' values */
+        info->paths[idx].obj_token = H5O_TOKEN_UNDEF;
     }
 } /* end trav_info_add() */
 
@@ -354,15 +360,15 @@ trav_info_add(trav_info_t *info, const char *path, h5trav_type_t obj_type)
 void
 trav_fileinfo_add(trav_info_t *info, hid_t loc_id)
 {
-    H5O_info_t oinfo;
+    H5O_info2_t oinfo;
     size_t idx = info->nused - 1;
 
-    if ( info->paths[idx].path && HDstrcmp(info->paths[idx].path, "."))
-      H5Oget_info_by_name2(loc_id, info->paths[idx].path, &oinfo, H5O_INFO_BASIC, H5P_DEFAULT);
+    if(info->paths[idx].path && HDstrcmp(info->paths[idx].path, "."))
+        H5Oget_info_by_name3(loc_id, info->paths[idx].path, &oinfo, H5O_INFO_BASIC, H5P_DEFAULT);
     else
-      H5Oget_info2(loc_id, &oinfo, H5O_INFO_BASIC);
+        H5Oget_info3(loc_id, &oinfo, H5O_INFO_BASIC);
 
-    info->paths[idx].objno = oinfo.addr;
+    HDmemcpy(&info->paths[idx].obj_token, &oinfo.token, sizeof(H5O_token_t));
     info->paths[idx].fileno = oinfo.fileno;
 } /* end trav_fileinfo_add() */
 
@@ -377,7 +383,7 @@ trav_fileinfo_add(trav_info_t *info, hid_t loc_id)
  *-------------------------------------------------------------------------
  */
 int
-trav_info_visit_obj(const char *path, const H5O_info_t *oinfo,
+trav_info_visit_obj(const char *path, const H5O_info2_t *oinfo,
         const char H5_ATTR_UNUSED *already_visited, void *udata)
 {
     size_t idx;
@@ -390,7 +396,7 @@ trav_info_visit_obj(const char *path, const H5O_info_t *oinfo,
     /* set object addr and fileno. These are for checking same object */
     info_p = (trav_info_t *) udata;
     idx = info_p->nused - 1;
-    info_p->paths[idx].objno = oinfo->addr;
+    HDmemcpy(&info_p->paths[idx].obj_token, &oinfo->token, sizeof(H5O_token_t));
     info_p->paths[idx].fileno = oinfo->fileno;
 
     return(0);
@@ -407,7 +413,7 @@ trav_info_visit_obj(const char *path, const H5O_info_t *oinfo,
  *-------------------------------------------------------------------------
  */
 int
-trav_info_visit_lnk(const char *path, const H5L_info_t *linfo, void *udata)
+trav_info_visit_lnk(const char *path, const H5L_info2_t *linfo, void *udata)
 {
     /* Add the link to the 'info' struct */
     trav_info_add((trav_info_t *)udata, path, ((linfo->type == H5L_TYPE_SOFT) ? H5TRAV_TYPE_LINK : H5TRAV_TYPE_UDLINK));
@@ -547,7 +553,7 @@ trav_info_free(trav_info_t *info)
  *-------------------------------------------------------------------------
  */
 static int
-trav_table_visit_obj(const char *path, const H5O_info_t *oinfo,
+trav_table_visit_obj(const char *path, const H5O_info2_t *oinfo,
     const char *already_visited, void *udata)
 {
     trav_table_t *table = (trav_table_t *)udata;
@@ -558,7 +564,7 @@ trav_table_visit_obj(const char *path, const H5O_info_t *oinfo,
         trav_table_add(table, path, oinfo);
     else
         /* Add alias for object to table */
-        trav_table_addlink(table, oinfo->addr, path);
+        trav_table_addlink(table, &oinfo->token, path);
 
     return 0;
 } /* end trav_table_visit_obj() */
@@ -574,7 +580,7 @@ trav_table_visit_obj(const char *path, const H5O_info_t *oinfo,
  *-------------------------------------------------------------------------
  */
 static int
-trav_table_visit_lnk(const char *path, const H5L_info_t H5_ATTR_UNUSED *linfo, void *udata)
+trav_table_visit_lnk(const char *path, const H5L_info2_t H5_ATTR_UNUSED *linfo, void *udata)
 {
     /* Add the link to the 'table' struct */
     trav_table_add((trav_table_t *)udata, path, NULL);
@@ -663,9 +669,7 @@ h5trav_getindext(const char *name, const trav_table_t *table)
  *-------------------------------------------------------------------------
  */
 static void
-trav_table_add(trav_table_t *table,
-                    const char *path,
-                    const H5O_info_t *oinfo)
+trav_table_add(trav_table_t *table, const char *path, const H5O_info2_t *oinfo)
 {
     size_t new_obj;
 
@@ -676,7 +680,11 @@ trav_table_add(trav_table_t *table,
         } /* end if */
 
         new_obj = table->nobjs++;
-        table->objs[new_obj].objno = oinfo ? oinfo->addr : HADDR_UNDEF;
+        if(oinfo)
+            HDmemcpy(&table->objs[new_obj].obj_token, &oinfo->token, sizeof(H5O_token_t));
+        else
+            /* Set token to 'undefined' values */
+            table->objs[new_obj].obj_token = H5O_TOKEN_UNDEF;
         table->objs[new_obj].flags[0] = table->objs[new_obj].flags[1] = 0;
         table->objs[new_obj].is_same_trgobj = 0;
         table->objs[new_obj].name = (char *)HDstrdup(path);
@@ -696,13 +704,16 @@ trav_table_add(trav_table_t *table,
  *-------------------------------------------------------------------------
  */
 static void
-trav_table_addlink(trav_table_t *table, haddr_t objno, const char *path)
+trav_table_addlink(trav_table_t *table, const H5O_token_t *obj_token, const char *path)
 {
     size_t i;           /* Local index variable */
+    int token_cmp;
 
     if(table) {
         for(i = 0; i < table->nobjs; i++) {
-            if(table->objs[i].objno == objno) {
+            if(H5Otoken_cmp(table->fid, &table->objs[i].obj_token, obj_token, &token_cmp) < 0)
+                return;
+            if(!token_cmp) {
                 size_t n;
 
                 /* already inserted? */
@@ -720,9 +731,9 @@ trav_table_addlink(trav_table_t *table, haddr_t objno, const char *path)
                 table->objs[i].links[n].new_name = (char *)HDstrdup(path);
 
                 return;
-            } /* end for */
+            } /* end if */
         } /* end for */
-    }
+    } /* end if */
 }
 
 
@@ -748,7 +759,10 @@ void trav_table_addflags(unsigned *flags,
         } /* end if */
 
         new_obj = table->nobjs++;
-        table->objs[new_obj].objno = 0;
+
+        /* Set token to 'undefined' values */
+        table->objs[new_obj].obj_token = H5O_TOKEN_UNDEF;
+
         table->objs[new_obj].flags[0] = flags[0];
         table->objs[new_obj].flags[1] = flags[1];
         table->objs[new_obj].is_same_trgobj = 0;
@@ -769,10 +783,11 @@ void trav_table_addflags(unsigned *flags,
  * Return:   void
  *-------------------------------------------------------------------------
  */
-void trav_table_init(trav_table_t **tbl)
+void trav_table_init(hid_t fid, trav_table_t **tbl)
 {
     trav_table_t* table = (trav_table_t*) HDmalloc(sizeof(trav_table_t));
     if(table) {
+        table->fid = fid;
         table->size = 0;
         table->nobjs = 0;
         table->objs = NULL;
@@ -893,8 +908,8 @@ trav_attr(hid_t
  *-------------------------------------------------------------------------
  */
 static int
-trav_print_visit_obj(const char *path, const H5O_info_t *oinfo,
-        const char *already_visited, void *udata)
+trav_print_visit_obj(const char *path, const H5O_info2_t *oinfo,
+    const char *already_visited, void *udata)
 {
     trav_print_udata_t *print_udata = (trav_print_udata_t *)udata;
     /* Print the name of the object */
@@ -951,7 +966,7 @@ trav_print_visit_obj(const char *path, const H5O_info_t *oinfo,
  *-------------------------------------------------------------------------
  */
 static int
-trav_print_visit_lnk(const char *path, const H5L_info_t *linfo, void *udata)
+trav_print_visit_lnk(const char *path, const H5L_info2_t *linfo, void *udata)
 {
     trav_print_udata_t *print_udata = (trav_print_udata_t *)udata;
 
diff --git a/tools/lib/h5trav.h b/tools/lib/h5trav.h
index a1d33b7..88473ad 100644
--- a/tools/lib/h5trav.h
+++ b/tools/lib/h5trav.h
@@ -17,9 +17,9 @@
 #include "hdf5.h"
 
 /* Typedefs for visiting objects */
-typedef herr_t (*h5trav_obj_func_t)(const char *path_name, const H5O_info_t *oinfo,
+typedef herr_t (*h5trav_obj_func_t)(const char *path_name, const H5O_info2_t *oinfo,
         const char *first_seen, void *udata);
-typedef herr_t (*h5trav_lnk_func_t)(const char *path_name, const H5L_info_t *linfo,
+typedef herr_t (*h5trav_lnk_func_t)(const char *path_name, const H5L_info2_t *linfo,
         void *udata);
 
 /*-------------------------------------------------------------------------
@@ -65,7 +65,7 @@ typedef struct symlink_trav_t {
 typedef struct trav_path_t {
     char      *path;
     h5trav_type_t type;
-    haddr_t     objno;     /* object address */
+    H5O_token_t   obj_token; /* object token */
     unsigned long 	fileno; /* File number that object is located in */
 } trav_path_t;
 
@@ -95,7 +95,7 @@ typedef struct trav_link_t {
  */
 
 typedef struct trav_obj_t {
-    haddr_t     objno;     /* object address */
+    H5O_token_t   obj_token; /* object token */
     unsigned    flags[2];  /* h5diff.object is present or not in both files*/
     hbool_t     is_same_trgobj; /* same target object? no need to compare */
     char        *name;     /* name */
@@ -112,6 +112,7 @@ typedef struct trav_obj_t {
  */
 
 typedef struct trav_table_t {
+    hid_t       fid;
     size_t      size;
     size_t      nobjs;
     trav_obj_t *objs;
@@ -144,8 +145,8 @@ H5TOOLS_DLL hbool_t symlink_is_visited(symlink_trav_t *visited, H5L_type_t type,
  */
 H5TOOLS_DLL int h5trav_getinfo(hid_t file_id, trav_info_t *info);
 H5TOOLS_DLL ssize_t h5trav_getindex(const trav_info_t *info, const char *obj);
-H5TOOLS_DLL int trav_info_visit_obj (const char *path, const H5O_info_t *oinfo, const char *already_visited, void *udata);
-H5TOOLS_DLL int trav_info_visit_lnk (const char *path, const H5L_info_t *linfo, void *udata);
+H5TOOLS_DLL int trav_info_visit_obj(const char *path, const H5O_info2_t *oinfo, const char *already_visited, void *udata);
+H5TOOLS_DLL int trav_info_visit_lnk(const char *path, const H5L_info2_t *linfo, void *udata);
 
 /*-------------------------------------------------------------------------
  * "h5trav table" public functions
@@ -184,7 +185,7 @@ H5TOOLS_DLL void trav_fileinfo_add(trav_info_t *info, hid_t loc_id);
  *-------------------------------------------------------------------------
  */
 
-H5TOOLS_DLL void trav_table_init(trav_table_t **table);
+H5TOOLS_DLL void trav_table_init(hid_t fid, trav_table_t **table);
 
 H5TOOLS_DLL void trav_table_free(trav_table_t *table);
 
diff --git a/tools/src/h5dump/h5dump.c b/tools/src/h5dump/h5dump.c
index 731fcd7..d97fdc0 100644
--- a/tools/src/h5dump/h5dump.c
+++ b/tools/src/h5dump/h5dump.c
@@ -1398,7 +1398,7 @@ main(int argc, const char *argv[])
     hid_t               fapl_id = H5P_DEFAULT;
     H5E_auto2_t         func;
     H5E_auto2_t         tools_func;
-    H5O_info_t          oi;
+    H5O_info2_t         oi;
     struct handler_t   *hand = NULL;
     int                 i;
     unsigned            u;
@@ -1567,7 +1567,7 @@ main(int argc, const char *argv[])
         }
 
         /* Get object info for root group */
-        if(H5Oget_info_by_name2(fid, "/", &oi, H5O_INFO_BASIC, H5P_DEFAULT) < 0) {
+        if(H5Oget_info_by_name3(fid, "/", &oi, H5O_INFO_BASIC, H5P_DEFAULT) < 0) {
             error_msg("internal error (file %s:line %d)\n", __FILE__, __LINE__);
             h5tools_setstatus(EXIT_FAILURE);
             goto done;
diff --git a/tools/src/h5dump/h5dump_ddl.c b/tools/src/h5dump/h5dump_ddl.c
index 2eb11fd..a410fda 100644
--- a/tools/src/h5dump/h5dump_ddl.c
+++ b/tools/src/h5dump/h5dump_ddl.c
@@ -31,7 +31,7 @@ typedef struct {
 } trav_attr_udata_t;
 
 /* callback function used by H5Literate() */
-static herr_t   dump_all_cb(hid_t group, const char *name, const H5L_info_t *linfo, void *op_data);
+static herr_t   dump_all_cb(hid_t group, const char *name, const H5L_info2_t *linfo, void *op_data);
 static int      dump_extlink(hid_t group, const char *linkname, const char *objname);
 
 /*-------------------------------------------------------------------------
@@ -152,7 +152,7 @@ dump_attr_cb(hid_t oid, const char *attr_name, const H5A_info_t H5_ATTR_UNUSED *
  *-------------------------------------------------------------------------
  */
 static herr_t
-dump_all_cb(hid_t group, const char *name, const H5L_info_t *linfo, void H5_ATTR_UNUSED *op_data)
+dump_all_cb(hid_t group, const char *name, const H5L_info2_t *linfo, void H5_ATTR_UNUSED *op_data)
 {
     hid_t       obj;
     hid_t       dapl_id = H5P_DEFAULT;  /* dataset access property list ID */
@@ -200,10 +200,10 @@ dump_all_cb(hid_t group, const char *name, const H5L_info_t *linfo, void H5_ATTR
     HDstrcat(obj_path, name);
 
     if(linfo->type == H5L_TYPE_HARD) {
-        H5O_info_t  oinfo;
+        H5O_info2_t  oinfo;
 
         /* Stat the object */
-        if(H5Oget_info_by_name2(group, name, &oinfo, H5O_INFO_BASIC, H5P_DEFAULT) < 0) {
+        if(H5Oget_info_by_name3(group, name, &oinfo, H5O_INFO_BASIC, H5P_DEFAULT) < 0) {
             error_msg("unable to get object information for \"%s\"\n", name);
             h5tools_setstatus(EXIT_FAILURE);
             ret = FAIL;
@@ -259,7 +259,7 @@ dump_all_cb(hid_t group, const char *name, const H5L_info_t *linfo, void H5_ATTR
                 if(oinfo.rc > 1 || hit_elink) {
                     obj_t  *found_obj;    /* Found object */
 
-                    found_obj = search_obj(dset_table, oinfo.addr);
+                    found_obj = search_obj(dset_table, &oinfo.token);
 
                     if(found_obj == NULL) {
                         ctx.indent_level++;
@@ -596,9 +596,9 @@ link_iteration(hid_t gid, unsigned crt_order_flags)
     /* if there is a request to do H5_INDEX_CRT_ORDER and tracking order is set
        in the group, then, sort by creation order, otherwise by name */
     if((sort_by == H5_INDEX_CRT_ORDER) && (crt_order_flags & H5P_CRT_ORDER_TRACKED))
-        H5Literate(gid, sort_by, sort_order, NULL, dump_all_cb, NULL);
+        H5Literate2(gid, sort_by, sort_order, NULL, dump_all_cb, NULL);
     else
-        H5Literate(gid, H5_INDEX_NAME, sort_order, NULL, dump_all_cb, NULL);
+        H5Literate2(gid, H5_INDEX_NAME, sort_order, NULL, dump_all_cb, NULL);
 }
 
 /*-------------------------------------------------------------------------
@@ -612,7 +612,7 @@ link_iteration(hid_t gid, unsigned crt_order_flags)
 void
 dump_named_datatype(hid_t tid, const char *name)
 {
-    H5O_info_t        oinfo;
+    H5O_info2_t       oinfo;
     unsigned          attr_crt_order_flags;
     hid_t             tcpl_id = H5I_INVALID_HID;    /* datatype creation property list ID */
     hsize_t           curr_pos = 0;    /* total data element position   */
@@ -670,7 +670,7 @@ dump_named_datatype(hid_t tid, const char *name)
                         h5tools_dump_header_format->datatypeblockbegin);
     h5tools_render_element(rawoutstream, outputformat, &ctx, &buffer, &curr_pos, (size_t)outputformat->line_ncols, (hsize_t)0, (hsize_t)0);
 
-    H5Oget_info2(tid, &oinfo, H5O_INFO_BASIC);
+    H5Oget_info3(tid, &oinfo, H5O_INFO_BASIC);
 
     /* Must check for uniqueness of all objects if we've traversed an elink,
      * otherwise only check if the reference count > 1.
@@ -678,7 +678,7 @@ dump_named_datatype(hid_t tid, const char *name)
     if(oinfo.rc > 1 || hit_elink) {
         obj_t  *found_obj;    /* Found object */
 
-        found_obj = search_obj(type_table, oinfo.addr);
+        found_obj = search_obj(type_table, &oinfo.token);
 
         if (found_obj == NULL) {
             error_msg("internal error (file %s:line %d)\n", __FILE__, __LINE__);
@@ -739,7 +739,7 @@ done:
 void
 dump_group(hid_t gid, const char *name)
 {
-    H5O_info_t  oinfo;
+    H5O_info2_t oinfo;
     hid_t       dset;
     hid_t       type;
     hid_t       gcpl_id;
@@ -816,9 +816,15 @@ dump_group(hid_t gid, const char *name)
         /* dump unamed type in root group */
         for(u = 0; u < type_table->nobjs; u++)
             if(!type_table->objs[u].recorded) {
+                char *obj_addr_str = NULL;
+
                 dset = H5Dopen2(gid, type_table->objs[u].objname, H5P_DEFAULT);
                 type = H5Dget_type(dset);
-                HDsprintf(type_name, "#"H5_PRINTF_HADDR_FMT, type_table->objs[u].objno);
+
+                H5Otoken_to_str(dset, &type_table->objs[u].obj_token, &obj_addr_str);
+                HDsprintf(type_name, "#%s", obj_addr_str);
+                H5free_memory(obj_addr_str);
+
                 dump_function_table->dump_named_datatype_function(type, type_name);
                 H5Tclose(type);
                 H5Dclose(dset);
@@ -830,7 +836,7 @@ dump_group(hid_t gid, const char *name)
 
     h5tools_dump_comment(rawoutstream, outputformat, &ctx, gid);
 
-    H5Oget_info2(gid, &oinfo, H5O_INFO_BASIC);
+    H5Oget_info3(gid, &oinfo, H5O_INFO_BASIC);
 
     /* Must check for uniqueness of all objects if we've traversed an elink,
      * otherwise only check if the reference count > 1.
@@ -838,7 +844,7 @@ dump_group(hid_t gid, const char *name)
     if(oinfo.rc > 1 || hit_elink) {
         obj_t  *found_obj;    /* Found object */
 
-        found_obj = search_obj(group_table, oinfo.addr);
+        found_obj = search_obj(group_table, &oinfo.token);
 
         if (found_obj == NULL) {
             error_msg("internal error (file %s:line %d)\n", __FILE__, __LINE__);
@@ -1251,8 +1257,13 @@ dump_fcontents(hid_t fid)
         unsigned u;
 
         for (u = 0; u < type_table->nobjs; u++) {
-            if (!type_table->objs[u].recorded)
-                PRINTSTREAM(rawoutstream, " %-10s /#"H5_PRINTF_HADDR_FMT"\n", "datatype", type_table->objs[u].objno);
+            if (!type_table->objs[u].recorded) {
+                char *obj_addr_str = NULL;
+
+                H5Otoken_to_str(fid, &type_table->objs[u].obj_token, &obj_addr_str);
+                PRINTSTREAM(rawoutstream, " %-10s /#%s\n", "datatype", obj_addr_str);
+                H5free_memory(obj_addr_str);
+            }
         }
     }
 
@@ -1319,7 +1330,7 @@ attr_search(hid_t oid, const char *attr_name, const H5A_info_t H5_ATTR_UNUSED *a
 } /* end attr_search() */
 
 static herr_t
-obj_search(const char *path, const H5O_info_t *oi, const char H5_ATTR_UNUSED *already_visited, void *_op_data)
+obj_search(const char *path, const H5O_info2_t *oi, const char H5_ATTR_UNUSED *already_visited, void *_op_data)
 {
     trav_handle_udata_t  *handle_data = (trav_handle_udata_t*)_op_data;
     const char *op_name = handle_data->op_name;
@@ -1356,7 +1367,7 @@ obj_search(const char *path, const H5O_info_t *oi, const char H5_ATTR_UNUSED *al
 } /* end obj_search() */
 
 static herr_t
-lnk_search(const char *path, const H5L_info_t *li, void *_op_data)
+lnk_search(const char *path, const H5L_info2_t *li, void *_op_data)
 {
     size_t      search_len;
     size_t      k;
@@ -1608,7 +1619,7 @@ error:
 void
 handle_datasets(hid_t fid, const char *dset, void *data, int pe, const char *display_name)
 {
-    H5O_info_t       oinfo;
+    H5O_info2_t      oinfo;
     hid_t            dsetid;
     hid_t            dapl_id = H5P_DEFAULT;  /* dataset access property list ID */
     struct subset_t *sset = (struct subset_t *)data;
@@ -1719,11 +1730,11 @@ handle_datasets(hid_t fid, const char *dset, void *data, int pe, const char *dis
     } /* end if */
 
 
-    H5Oget_info2(dsetid, &oinfo, H5O_INFO_BASIC);
+    H5Oget_info3(dsetid, &oinfo, H5O_INFO_BASIC);
     if(oinfo.rc > 1 || hit_elink) {
         obj_t  *found_obj;    /* Found object */
 
-        found_obj = search_obj(dset_table, oinfo.addr);
+        found_obj = search_obj(dset_table, &oinfo.token);
 
         if(found_obj) {
             if (found_obj->displayed) {
@@ -1812,9 +1823,9 @@ handle_groups(hid_t fid, const char *group, void H5_ATTR_UNUSED *data, int pe, c
 void
 handle_links(hid_t fid, const char *links, void H5_ATTR_UNUSED * data, int H5_ATTR_UNUSED pe, const char H5_ATTR_UNUSED *display_name)
 {
-    H5L_info_t linfo;
+    H5L_info2_t linfo;
 
-    if(H5Lget_info(fid, links, &linfo, H5P_DEFAULT) < 0) {
+    if(H5Lget_info2(fid, links, &linfo, H5P_DEFAULT) < 0) {
         error_msg("unable to get link info from \"%s\"\n", links);
         h5tools_setstatus(EXIT_FAILURE);
     }
@@ -1903,8 +1914,12 @@ handle_datatypes(hid_t fid, const char *type, void H5_ATTR_UNUSED * data, int pe
             char name[128];
 
             if(!type_table->objs[idx].recorded) {
+                char *obj_addr_string = NULL;
+
                 /* unamed datatype */
-                HDsprintf(name, "/#"H5_PRINTF_HADDR_FMT, type_table->objs[idx].objno);
+                H5Otoken_to_str(fid, &type_table->objs[idx].obj_token, &obj_addr_string);
+                HDsprintf(name, "/#%s", obj_addr_string);
+                H5free_memory(obj_addr_string);
 
                 if(!HDstrcmp(name, real_name))
                     break;
@@ -1962,7 +1977,7 @@ static int
 dump_extlink(hid_t group, const char *linkname, const char *objname)
 {
     hid_t       oid;
-    H5O_info_t  oi;
+    H5O_info2_t oi;
     table_t     *old_group_table = group_table;
     table_t     *old_dset_table = dset_table;
     table_t     *old_type_table = type_table;
@@ -1974,7 +1989,7 @@ dump_extlink(hid_t group, const char *linkname, const char *objname)
         goto fail;
 
     /* Get object info */
-    if (H5Oget_info2(oid, &oi, H5O_INFO_BASIC) < 0) {
+    if (H5Oget_info3(oid, &oi, H5O_INFO_BASIC) < 0) {
         H5Oclose(oid);
         goto fail;
     }
diff --git a/tools/src/h5dump/h5dump_xml.c b/tools/src/h5dump/h5dump_xml.c
index c116da8..7a3ad80 100644
--- a/tools/src/h5dump/h5dump_xml.c
+++ b/tools/src/h5dump/h5dump_xml.c
@@ -106,7 +106,7 @@ static h5tool_format_t         xml_dataformat = {
 
 
 /* internal functions */
-static int              xml_name_to_XID(const char *, char *, int , int );
+static int              xml_name_to_XID(hid_t, const char *, char *, int, int);
 
 /* internal functions used by XML option */
 static void             xml_print_datatype(hid_t, unsigned);
@@ -130,7 +130,7 @@ static char            *xml_escape_the_name(const char *);
  *-------------------------------------------------------------------------
  */
 static herr_t
-xml_dump_all_cb(hid_t group, const char *name, const H5L_info_t *linfo, void H5_ATTR_UNUSED *op_data)
+xml_dump_all_cb(hid_t group, const char *name, const H5L_info2_t *linfo, void H5_ATTR_UNUSED *op_data)
 {
     hid_t             obj;
     herr_t            ret = SUCCEED;
@@ -177,10 +177,10 @@ xml_dump_all_cb(hid_t group, const char *name, const H5L_info_t *linfo, void H5_
     HDstrcat(obj_path, name);
 
     if(linfo->type == H5L_TYPE_HARD) {
-        H5O_info_t  oinfo;
+        H5O_info2_t  oinfo;
 
         /* Stat the object */
-        if(H5Oget_info_by_name2(group, name, &oinfo, H5O_INFO_BASIC, H5P_DEFAULT) < 0) {
+        if(H5Oget_info_by_name3(group, name, &oinfo, H5O_INFO_BASIC, H5P_DEFAULT) < 0) {
             error_msg("unable to get object information for \"%s\"\n", name);
             h5tools_setstatus(EXIT_FAILURE);
             ret = FAIL;
@@ -225,7 +225,7 @@ xml_dump_all_cb(hid_t group, const char *name, const H5L_info_t *linfo, void H5_
                 if(oinfo.rc > 1 || hit_elink) {
                     obj_t  *found_obj;    /* Found object */
 
-                    found_obj = search_obj(dset_table, oinfo.addr);
+                    found_obj = search_obj(dset_table, &oinfo.token);
 
                     if(found_obj == NULL) {
                         ctx.indent_level++;
@@ -272,8 +272,8 @@ xml_dump_all_cb(hid_t group, const char *name, const H5L_info_t *linfo, void H5_
                         char pointerxid[100];
 
                         /* Create OBJ-XIDs for the parent and object */
-                        xml_name_to_XID(obj_path, dsetxid, (int)sizeof(dsetxid), 1);
-                        xml_name_to_XID(prefix, parentxid, (int)sizeof(parentxid), 1);
+                        xml_name_to_XID(obj, obj_path, dsetxid, (int)sizeof(dsetxid), 1);
+                        xml_name_to_XID(obj, prefix, parentxid, (int)sizeof(parentxid), 1);
 
                         ctx.need_prefix = TRUE;
 
@@ -290,7 +290,7 @@ xml_dump_all_cb(hid_t group, const char *name, const H5L_info_t *linfo, void H5_
                                 t_prefix);                  /* H5ParentPaths */
                         h5tools_render_element(rawoutstream, outputformat, &ctx, &buffer, &curr_pos, (size_t)outputformat->line_ncols, (hsize_t)0, (hsize_t)0);
 
-                        xml_name_to_XID(found_obj->objname, pointerxid, (int)sizeof(pointerxid), 1);
+                        xml_name_to_XID(obj, found_obj->objname, pointerxid, (int)sizeof(pointerxid), 1);
 
                         ctx.indent_level++;
 
@@ -393,11 +393,11 @@ xml_dump_all_cb(hid_t group, const char *name, const H5L_info_t *linfo, void H5_
                     } /* end else */
 
                     /* Create OBJ-XIDs for the parent and object */
-                    xml_name_to_XID(t_obj_path, linkxid, (int)sizeof(linkxid), 1);
-                    xml_name_to_XID(prefix, parentxid, (int)sizeof(parentxid), 1);
+                    xml_name_to_XID(group, t_obj_path, linkxid, (int)sizeof(linkxid), 1);
+                    xml_name_to_XID(group, prefix, parentxid, (int)sizeof(parentxid), 1);
 
                     /* Try to create an OBJ-XID for the object pointed to */
-                    res = xml_name_to_XID(t_link_path, targetxid, (int)sizeof(targetxid), 0);
+                    res = xml_name_to_XID(group, t_link_path, targetxid, (int)sizeof(targetxid), 0);
                     if (res == 0) {
                         /* target obj found */
                         ctx.need_prefix = TRUE;
@@ -482,8 +482,8 @@ xml_dump_all_cb(hid_t group, const char *name, const H5L_info_t *linfo, void H5_
                         char *t_targname = xml_escape_the_name(targname);
 
                         /* Create OBJ-XIDs for the parent and object */
-                        xml_name_to_XID(t_obj_path, linkxid, (int)sizeof(linkxid), 1);
-                        xml_name_to_XID(prefix, parentxid, (int)sizeof(parentxid), 1);
+                        xml_name_to_XID(group, t_obj_path, linkxid, (int)sizeof(linkxid), 1);
+                        xml_name_to_XID(group, prefix, parentxid, (int)sizeof(parentxid), 1);
 
                         ctx.need_prefix = TRUE;
 
@@ -528,8 +528,8 @@ xml_dump_all_cb(hid_t group, const char *name, const H5L_info_t *linfo, void H5_
                 char *t_obj_path = xml_escape_the_name(obj_path);
 
                 /* Create OBJ-XIDs for the parent and object */
-                xml_name_to_XID(t_obj_path, linkxid, (int)sizeof(linkxid), 1);
-                xml_name_to_XID(prefix, parentxid, (int)sizeof(parentxid), 1);
+                xml_name_to_XID(group, t_obj_path, linkxid, (int)sizeof(linkxid), 1);
+                xml_name_to_XID(group, prefix, parentxid, (int)sizeof(parentxid), 1);
 
                 ctx.need_prefix = TRUE;
 
@@ -575,20 +575,26 @@ done:
  *         1 - generate a fake entry and return fake id.
  */
 int
-xml_name_to_XID(const char *str , char *outstr, int outlen, int gen)
+xml_name_to_XID(hid_t loc_id, const char *str, char *outstr, int outlen, int gen)
 {
-    haddr_t objno;      /* Object ID for object at path */
+    H5O_token_t obj_token;
+    char *obj_addr_str = NULL;
+    int lookup_ret;
 
     if (outlen < 22) return 1;
 
-    objno = ref_path_table_lookup(str);
-    if (objno == HADDR_UNDEF) {
+    lookup_ret = ref_path_table_lookup(str, &obj_token);
+    if (lookup_ret < 0) {
         if (HDstrlen(str) == 0) {
-            objno = ref_path_table_lookup("/");
-            if (objno == HADDR_UNDEF) {
+            lookup_ret = ref_path_table_lookup("/", &obj_token);
+            if (lookup_ret < 0) {
                 if (gen) {
-                    objno = ref_path_table_gen_fake(str);
-                    HDsprintf(outstr, "xid_"H5_PRINTF_HADDR_FMT, objno);
+                    ref_path_table_gen_fake(str, &obj_token);
+
+                    H5Otoken_to_str(loc_id, &obj_token, &obj_addr_str);
+                    HDsprintf(outstr, "xid_%s", obj_addr_str);
+                    H5free_memory(obj_addr_str);
+
                     return 0;
                 }
                 else {
@@ -598,8 +604,12 @@ xml_name_to_XID(const char *str , char *outstr, int outlen, int gen)
         }
         else {
             if (gen) {
-                objno = ref_path_table_gen_fake(str);
-                HDsprintf(outstr, "xid_"H5_PRINTF_HADDR_FMT, objno);
+                ref_path_table_gen_fake(str, &obj_token);
+
+                H5Otoken_to_str(loc_id, &obj_token, &obj_addr_str);
+                HDsprintf(outstr, "xid_%s", obj_addr_str);
+                H5free_memory(obj_addr_str);
+
                 return 0;
             }
             else {
@@ -608,7 +618,9 @@ xml_name_to_XID(const char *str , char *outstr, int outlen, int gen)
         }
     }
 
-    HDsprintf(outstr, "xid_"H5_PRINTF_HADDR_FMT, objno);
+    H5Otoken_to_str(loc_id, &obj_token, &obj_addr_str);
+    HDsprintf(outstr, "xid_%s", obj_addr_str);
+    H5free_memory(obj_addr_str);
 
     return 0;
 }
@@ -878,12 +890,12 @@ xml_print_datatype(hid_t type, unsigned in_group)
     outputformat = &string_dataformat;
 
     if(!in_group && H5Tcommitted(type) > 0) {
-        H5O_info_t oinfo;
+        H5O_info2_t oinfo;
         obj_t  *found_obj;    /* Found object */
 
         /* detect a shared datatype, output only once */
-        H5Oget_info2(type, &oinfo, H5O_INFO_BASIC);
-        found_obj = search_obj(type_table, oinfo.addr);
+        H5Oget_info3(type, &oinfo, H5O_INFO_BASIC);
+        found_obj = search_obj(type_table, &oinfo.token);
 
         if(found_obj) {
             /* This should be defined somewhere else */
@@ -891,7 +903,7 @@ xml_print_datatype(hid_t type, unsigned in_group)
                probably will have something different eventually */
             char * dtxid = (char *)HDmalloc((size_t)100);
 
-            xml_name_to_XID(found_obj->objname, dtxid, 100, 1);
+            xml_name_to_XID(type, found_obj->objname, dtxid, 100, 1);
             if (!found_obj->recorded) {
                 /* 'anonymous' NDT.  Use it's object num.
                    as it's name.  */
@@ -1531,19 +1543,19 @@ xml_dump_datatype(hid_t type)
     dump_indent += COL;
 
     if(H5Tcommitted(type) > 0) {
-        H5O_info_t oinfo;
+        H5O_info2_t oinfo;
         obj_t  *found_obj;    /* Found object */
 
         /* Datatype is a shared or named datatype */
-        H5Oget_info2(type, &oinfo, H5O_INFO_BASIC);
-        found_obj = search_obj(type_table, oinfo.addr);
+        H5Oget_info3(type, &oinfo, H5O_INFO_BASIC);
+        found_obj = search_obj(type_table, &oinfo.token);
 
         if(found_obj) {
             /* Shared datatype, must be entered as an object  */
             /* These 2 cases are the same now, but may change */
             char *dtxid = (char *)HDmalloc((size_t)100);
 
-            xml_name_to_XID(found_obj->objname, dtxid, 100, 1);
+            xml_name_to_XID(type, found_obj->objname, dtxid, 100, 1);
             if (!found_obj->recorded) {
                 /* anonymous stored datatype:
                    following the dumper's current
@@ -2293,8 +2305,8 @@ xml_dump_named_datatype(hid_t type, const char *name)
     t_prefix = xml_escape_the_name(prefix);
     t_name = xml_escape_the_name(name);
 
-    xml_name_to_XID(tmp, dtxid, 100, 1);
-    xml_name_to_XID(prefix, parentxid, 100, 1);
+    xml_name_to_XID(type, tmp, dtxid, 100, 1);
+    xml_name_to_XID(type, prefix, parentxid, 100, 1);
     if(HDstrncmp(name, "#", (size_t)1) == 0) {
         /*  Special:  this is an 'anonymous' NDT, deleted but
            still in use.
@@ -2317,7 +2329,7 @@ xml_dump_named_datatype(hid_t type, const char *name)
         h5tools_render_element(rawoutstream, outputformat, &ctx, &buffer, &curr_pos, (size_t)outputformat->line_ncols, (hsize_t)0, (hsize_t)0);
     }
     else {
-        H5O_info_t  oinfo;          /* Object info */
+        H5O_info2_t  oinfo;          /* Object info */
 
         ctx.need_prefix = TRUE;
 
@@ -2331,12 +2343,12 @@ xml_dump_named_datatype(hid_t type, const char *name)
         h5tools_render_element(rawoutstream, outputformat, &ctx, &buffer, &curr_pos, (size_t)outputformat->line_ncols, (hsize_t)0, (hsize_t)0);
 
         /* Check uniqueness of named datatype */
-        H5Oget_info2(type, &oinfo, H5O_INFO_BASIC);
+        H5Oget_info3(type, &oinfo, H5O_INFO_BASIC);
         if(oinfo.rc > 1) {
             obj_t       *found_obj;     /* Found object */
 
             /* Group with more than one link to it... */
-            found_obj = search_obj(type_table, oinfo.addr);
+            found_obj = search_obj(type_table, &oinfo.token);
 
             if (found_obj == NULL) {
                 indentation(dump_indent);
@@ -2353,7 +2365,7 @@ xml_dump_named_datatype(hid_t type, const char *name)
 
                 ctx.indent_level++;
 
-                xml_name_to_XID(found_obj->objname, pointerxid, (int)sizeof(pointerxid), 1);
+                xml_name_to_XID(type, found_obj->objname, pointerxid, (int)sizeof(pointerxid), 1);
 
                 ctx.need_prefix = TRUE;
 
@@ -2436,7 +2448,7 @@ done:
 void
 xml_dump_group(hid_t gid, const char *name)
 {
-    H5O_info_t              oinfo;
+    H5O_info2_t             oinfo;
     hid_t                   gcpl_id;
     hid_t                   dset, type;
     unsigned                crt_order_flags;
@@ -2517,13 +2529,13 @@ xml_dump_group(hid_t gid, const char *name)
         }
     }
 
-    H5Oget_info2(gid, &oinfo, H5O_INFO_BASIC);
+    H5Oget_info3(gid, &oinfo, H5O_INFO_BASIC);
 
     if(oinfo.rc > 1) {
         obj_t *found_obj;    /* Found object */
 
         /* Group with more than one link to it... */
-        found_obj = search_obj(group_table, oinfo.addr);
+        found_obj = search_obj(group_table, &oinfo.token);
 
         if (found_obj == NULL) {
             indentation(dump_indent);
@@ -2541,7 +2553,7 @@ xml_dump_group(hid_t gid, const char *name)
                 /* already seen: enter a groupptr */
                 if(isRoot) {
                     /* probably can't happen! */
-                    xml_name_to_XID("/", grpxid, 100, 1);
+                    xml_name_to_XID(gid, "/", grpxid, 100, 1);
 
                     ctx.need_prefix = TRUE;
 
@@ -2554,8 +2566,8 @@ xml_dump_group(hid_t gid, const char *name)
                 else {
                     t_objname = xml_escape_the_name(found_obj->objname);
                     par_name = xml_escape_the_name(par);
-                    xml_name_to_XID(tmp, grpxid, 100, 1);
-                    xml_name_to_XID(par, parentxid, 100, 1);
+                    xml_name_to_XID(gid, tmp, grpxid, 100, 1);
+                    xml_name_to_XID(gid, par, parentxid, 100, 1);
 
                     ctx.need_prefix = TRUE;
 
@@ -2573,8 +2585,8 @@ xml_dump_group(hid_t gid, const char *name)
 
                     t_objname = xml_escape_the_name(found_obj->objname);/* point to the NDT by name */
                     par_name = xml_escape_the_name(par);
-                    xml_name_to_XID(found_obj->objname, ptrstr, 100, 1);
-                    xml_name_to_XID(par, parentxid, 100, 1);
+                    xml_name_to_XID(gid, found_obj->objname, ptrstr, 100, 1);
+                    xml_name_to_XID(gid, par, parentxid, 100, 1);
 
                     ctx.need_prefix = TRUE;
 
@@ -2597,7 +2609,7 @@ xml_dump_group(hid_t gid, const char *name)
 
                 /* first time this group has been seen -- describe it  */
                 if(isRoot) {
-                    xml_name_to_XID("/", grpxid, 100, 1);
+                    xml_name_to_XID(gid, "/", grpxid, 100, 1);
 
                     ctx.need_prefix = TRUE;
 
@@ -2611,8 +2623,8 @@ xml_dump_group(hid_t gid, const char *name)
                     char *t_tmp = xml_escape_the_name(tmp);
 
                     par_name = xml_escape_the_name(par);
-                    xml_name_to_XID(tmp, grpxid, 100, 1);
-                    xml_name_to_XID(par, parentxid, 100, 1);
+                    xml_name_to_XID(gid, tmp, grpxid, 100, 1);
+                    xml_name_to_XID(gid, par, parentxid, 100, 1);
 
                     ctx.need_prefix = TRUE;
 
@@ -2652,9 +2664,15 @@ xml_dump_group(hid_t gid, const char *name)
                     /* Very special case: dump unamed type in root group */
                     for(u = 0; u < type_table->nobjs; u++) {
                         if(!type_table->objs[u].recorded) {
+                            char *obj_addr_str = NULL;
+
                             dset = H5Dopen2(gid, type_table->objs[u].objname, H5P_DEFAULT);
                             type = H5Dget_type(dset);
-                            HDsprintf(type_name, "#"H5_PRINTF_HADDR_FMT, type_table->objs[u].objno);
+
+                            H5Otoken_to_str(dset, &type_table->objs[u].obj_token, &obj_addr_str);
+                            HDsprintf(type_name, "#%s", obj_addr_str);
+                            H5free_memory(obj_addr_str);
+
                             dump_function_table->dump_named_datatype_function(type, type_name);
                             H5Tclose(type);
                             H5Dclose(dset);
@@ -2665,9 +2683,9 @@ xml_dump_group(hid_t gid, const char *name)
                 /* iterate through all the links */
 
                 if((sort_by == H5_INDEX_CRT_ORDER) && (crt_order_flags & H5P_CRT_ORDER_TRACKED))
-                    H5Literate(gid, sort_by, sort_order, NULL, xml_dump_all_cb, NULL);
+                    H5Literate2(gid, sort_by, sort_order, NULL, xml_dump_all_cb, NULL);
                 else
-                    H5Literate(gid, H5_INDEX_NAME, sort_order, NULL, xml_dump_all_cb, NULL);
+                    H5Literate2(gid, H5_INDEX_NAME, sort_order, NULL, xml_dump_all_cb, NULL);
 
                 dump_indent -= COL;
                 ctx.indent_level--;
@@ -2689,15 +2707,15 @@ xml_dump_group(hid_t gid, const char *name)
         h5tools_str_reset(&buffer);
 
         if(isRoot) {
-            xml_name_to_XID("/", grpxid, 100, 1);
+            xml_name_to_XID(gid, "/", grpxid, 100, 1);
             h5tools_str_append(&buffer, "<%sRootGroup OBJ-XID=\"%s\" H5Path=\"%s\">", xmlnsprefix, grpxid, "/");
         }
         else {
             char *t_tmp = xml_escape_the_name(tmp);
 
             par_name = xml_escape_the_name(par);
-            xml_name_to_XID(tmp, grpxid, 100, 1);
-            xml_name_to_XID(par, parentxid, 100, 1);
+            xml_name_to_XID(gid, tmp, grpxid, 100, 1);
+            xml_name_to_XID(gid, par, parentxid, 100, 1);
             h5tools_str_append(&buffer, "<%sGroup Name=\"%s\" OBJ-XID=\"%s\" H5Path=\"%s\" "
                     "Parents=\"%s\" H5ParentPaths=\"%s\" >",
                     xmlnsprefix, t_name, grpxid, t_tmp, parentxid, par_name);
@@ -2734,9 +2752,15 @@ xml_dump_group(hid_t gid, const char *name)
             /* Very special case: dump unamed type in root group */
             for(u = 0; u < type_table->nobjs; u++) {
                 if(!type_table->objs[u].recorded) {
+                    char *obj_addr_str = NULL;
+
                     dset = H5Dopen2(gid, type_table->objs[u].objname, H5P_DEFAULT);
                     type = H5Dget_type(dset);
-                    HDsprintf(type_name, "#"H5_PRINTF_HADDR_FMT, type_table->objs[u].objno);
+
+                    H5Otoken_to_str(dset, &type_table->objs[u].obj_token, &obj_addr_str);
+                    HDsprintf(type_name, "#%s", obj_addr_str);
+                    H5free_memory(obj_addr_str);
+
                     dump_function_table->dump_named_datatype_function(type, type_name);
                     H5Tclose(type);
                     H5Dclose(dset);
@@ -2747,9 +2771,9 @@ xml_dump_group(hid_t gid, const char *name)
         /* iterate through all the links */
 
         if((sort_by == H5_INDEX_CRT_ORDER) && (crt_order_flags & H5P_CRT_ORDER_TRACKED))
-            H5Literate(gid, sort_by, sort_order, NULL, xml_dump_all_cb, NULL);
+            H5Literate2(gid, sort_by, sort_order, NULL, xml_dump_all_cb, NULL);
         else
-            H5Literate(gid, H5_INDEX_NAME, sort_order, NULL, xml_dump_all_cb, NULL);
+            H5Literate2(gid, H5_INDEX_NAME, sort_order, NULL, xml_dump_all_cb, NULL);
 
         dump_indent -= COL;
         ctx.indent_level--;
@@ -2791,8 +2815,7 @@ xml_print_refs(hid_t did, int source)
     hid_t             space   = H5I_INVALID_HID;
     hssize_t          ssiz    = -1;
     hsize_t           i;
-    size_t            tsiz;
-    hobj_ref_t       *refbuf = NULL;
+    H5R_ref_t        *refbuf = NULL;
     char             *buf = NULL;
     h5tools_str_t     buffer;          /* string into which to render   */
     h5tools_context_t ctx;             /* print context  */
@@ -2823,13 +2846,11 @@ xml_print_refs(hid_t did, int source)
         space = H5Dget_space(did);
         if ((ssiz = H5Sget_simple_extent_npoints(space)) < 0)
             goto error;
-        if ((tsiz = H5Tget_size(type)) == 0)
-            goto error;
 
-        buf = (char *) HDcalloc((size_t)ssiz, tsiz);
+        buf = (char *) HDcalloc((size_t)ssiz, sizeof(H5R_ref_t));
         if (buf == NULL)
             goto error;
-        e = H5Dread(did, H5T_STD_REF_OBJ, H5S_ALL, H5S_ALL, H5P_DEFAULT, buf);
+        e = H5Dread(did, H5T_STD_REF, H5S_ALL, H5S_ALL, H5P_DEFAULT, buf);
         /* need to check result here */
         if (e < 0)
             goto error;
@@ -2838,19 +2859,17 @@ xml_print_refs(hid_t did, int source)
         space = H5Aget_space(did);
         if ((ssiz = H5Sget_simple_extent_npoints(space)) < 0)
             goto error;
-        if ((tsiz = H5Tget_size(type)) == 0)
-            goto error;
 
-        buf = (char *) HDcalloc((size_t)ssiz, tsiz);
+        buf = (char *) HDcalloc((size_t)ssiz, sizeof(H5R_ref_t));
         if (buf == NULL)
             goto error;
-        e = H5Aread(did, H5T_STD_REF_OBJ, buf);
+        e = H5Aread(did, H5T_STD_REF, buf);
         /* need to check the result here */
         if (e < 0)
             goto error;
     }
 
-    refbuf = (hobj_ref_t *)((void *)buf);
+    refbuf = (H5R_ref_t *)((void *)buf);
 
     /* setup */
     HDmemset(&buffer, 0, sizeof(h5tools_str_t));
@@ -2901,6 +2920,8 @@ xml_print_refs(hid_t did, int source)
         }
         ctx.indent_level--;
 
+        H5Rdestroy(refbuf);
+
         refbuf++;
     }
 
@@ -3290,7 +3311,7 @@ xml_dump_fill_value(hid_t dcpl, hid_t type)
     H5Pget_fill_value(dcpl, type, buf);
 
     if (H5Tget_class(type) == H5T_REFERENCE) {
-        const char * path = lookup_ref_path(*(hobj_ref_t *) buf);
+        const char * path = lookup_ref_path(*(H5R_ref_t *) buf);
 
         ctx.need_prefix = TRUE;
 
@@ -3324,6 +3345,8 @@ xml_dump_fill_value(hid_t dcpl, hid_t type)
         h5tools_str_reset(&buffer);
         h5tools_str_append(&buffer, "</%sDataFromFile>", xmlnsprefix);
         h5tools_render_element(rawoutstream, outputformat, &ctx, &buffer, &curr_pos, (size_t)outputformat->line_ncols, (hsize_t)0, (hsize_t)0);
+
+        H5Rdestroy((H5R_ref_t *) buf);
     }
     else if (H5Tget_class(type) == H5T_STRING) {
         /* ????? */
@@ -3610,8 +3633,8 @@ xml_dump_dataset(hid_t did, const char *name, struct subset_t H5_ATTR_UNUSED *ss
     string_dataformat.do_escape = display_escape;
     outputformat = &string_dataformat;
 
-    xml_name_to_XID(tmp, rstr, 100, 1);
-    xml_name_to_XID(prefix, pstr, 100, 1);
+    xml_name_to_XID(did, tmp, rstr, 100, 1);
+    xml_name_to_XID(did, prefix, pstr, 100, 1);
 
     ctx.need_prefix = TRUE;
 
diff --git a/tools/src/h5format_convert/h5format_convert.c b/tools/src/h5format_convert/h5format_convert.c
index f5234f4..bb606ac 100644
--- a/tools/src/h5format_convert/h5format_convert.c
+++ b/tools/src/h5format_convert/h5format_convert.c
@@ -362,7 +362,7 @@ error:
  *-------------------------------------------------------------------------
  */
 static int
-convert_dsets_cb(const char *path, const H5O_info_t *oi, const char *already_visited, void *_fid)
+convert_dsets_cb(const char *path, const H5O_info2_t *oi, const char *already_visited, void *_fid)
 {
     hid_t fid = *(hid_t *)_fid;
 
diff --git a/tools/src/h5ls/h5ls.c b/tools/src/h5ls/h5ls.c
index e8a7a2b..88f1d2b 100644
--- a/tools/src/h5ls/h5ls.c
+++ b/tools/src/h5ls/h5ls.c
@@ -1260,10 +1260,17 @@ print_type(h5tools_str_t *buffer, hid_t type, int ind)
 
     /* Shared? If so then print the type's OID */
     if (H5Tcommitted(type)) {
-        H5O_info_t  oi;
+        H5O_info2_t oi;
 
-        if (H5Oget_info2(type, &oi, H5O_INFO_BASIC) >= 0)
-            h5tools_str_append(buffer,"shared-%lu:"H5_PRINTF_HADDR_FMT" ", oi.fileno, oi.addr);
+        if (H5Oget_info3(type, &oi, H5O_INFO_BASIC) >= 0) {
+            char *type_string = NULL;
+
+            H5Otoken_to_str(type, &oi.token, &type_string);
+
+            h5tools_str_append(buffer,"shared-%lu:%s", oi.fileno, type_string);
+
+            H5free_memory(type_string);
+        } /* end if */
         else
             h5tools_str_append(buffer,"shared ");
     } /* end if */
@@ -2284,7 +2291,7 @@ datatype_list2(hid_t type, const char H5_ATTR_UNUSED *name)
  *-------------------------------------------------------------------------
  */
 static herr_t
-list_obj(const char *name, const H5O_info_t *oinfo, const char *first_seen, void *_iter)
+list_obj(const char *name, const H5O_info2_t *oinfo, const char *first_seen, void *_iter)
 {
     H5O_type_t          obj_type = oinfo->type;          /* Type of the object */
     iter_t             *iter = (iter_t*)_iter;
@@ -2355,6 +2362,7 @@ list_obj(const char *name, const H5O_info_t *oinfo, const char *first_seen, void
         if (verbose_g > 0) {
             size_t buf_size = 0;
             char* comment = NULL;
+            char* obj_addr_str = NULL;
             ssize_t cmt_bufsize = -1;
 
             /* Display attributes */
@@ -2363,11 +2371,15 @@ list_obj(const char *name, const H5O_info_t *oinfo, const char *first_seen, void
                 H5Aiterate2(obj, H5_INDEX_NAME, H5_ITER_INC, NULL, list_attr, NULL);
 
             /* Object location & reference count */
+            H5Otoken_to_str(obj, &oinfo->token, &obj_addr_str);
+
             h5tools_str_reset(&buffer);
-            h5tools_str_append(&buffer, "    %-10s %lu:"H5_PRINTF_HADDR_FMT"\n", "Location:", oinfo->fileno, oinfo->addr);
+            h5tools_str_append(&buffer, "    %-10s %lu:%s\n", "Location:", oinfo->fileno, obj_addr_str);
             h5tools_str_append(&buffer, "    %-10s %u\n", "Links:", (unsigned)oinfo->rc);
             h5tools_render_element(rawoutstream, info, &ctx, &buffer, &curr_pos, (size_t)info->line_ncols, (hsize_t)0, (hsize_t)0);
 
+            H5free_memory(obj_addr_str);
+
             /* Modification time */
             if (oinfo->mtime > 0) {
                 char buf[256];
@@ -2442,7 +2454,7 @@ done:
  *-------------------------------------------------------------------------
  */
 static herr_t
-list_lnk(const char *name, const H5L_info_t *linfo, void *_iter)
+list_lnk(const char *name, const H5L_info2_t *linfo, void *_iter)
 {
     char   *buf = NULL;
     iter_t *iter = (iter_t*)_iter;
@@ -2628,7 +2640,7 @@ static herr_t
 visit_obj(hid_t file, const char *oname, iter_t *iter)
 {
     int                 retval = 0;
-    H5O_info_t          oi;              /* Information for object */
+    H5O_info2_t         oi;              /* Information for object */
     hsize_t             curr_pos = 0;    /* total data element position   */
     h5tools_str_t       buffer;          /* string into which to render   */
     h5tools_context_t   ctx;             /* print context  */
@@ -2640,7 +2652,7 @@ visit_obj(hid_t file, const char *oname, iter_t *iter)
     h5tools_str_reset(&buffer);
 
     /* Retrieve info for object to list */
-    if (H5Oget_info_by_name2(file, oname, &oi, H5O_INFO_BASIC|H5O_INFO_TIME, H5P_DEFAULT) < 0) {
+    if (H5Oget_info_by_name3(file, oname, &oi, H5O_INFO_BASIC|H5O_INFO_TIME, H5P_DEFAULT) < 0) {
         if (iter->symlink_target) {
             h5tools_str_append(&buffer, "{**NOT FOUND**}\n");
             iter->symlink_target = FALSE;
@@ -3279,7 +3291,7 @@ main(int argc, const char *argv[])
      * doesn't exist). */
     show_file_name_g = (argc-argno > 1); /*show file names if more than one*/
     while(argno < argc) {
-        H5L_info_t li;
+        H5L_info2_t li;
         iter_t iter;
         symlink_trav_t symlink_list;
         size_t u;
@@ -3360,7 +3372,7 @@ main(int argc, const char *argv[])
         /* Check for root group as object name */
         if (HDstrcmp(oname, root_name)) {
             /* Check the type of link given */
-            if (H5Lget_info(file_id, oname, &li, H5P_DEFAULT) < 0) {
+            if (H5Lget_info2(file_id, oname, &li, H5P_DEFAULT) < 0) {
                 hsize_t             curr_pos = 0;        /* total data element position   */
                 h5tools_str_t       buffer;          /* string into which to render   */
                 h5tools_context_t   ctx;             /* print context  */
diff --git a/tools/src/h5repack/h5repack.c b/tools/src/h5repack/h5repack.c
index b138896..8eeaa0e 100644
--- a/tools/src/h5repack/h5repack.c
+++ b/tools/src/h5repack/h5repack.c
@@ -222,18 +222,27 @@ h5repack_addlayout(const char *str, pack_opt_t *options)
 hid_t
 copy_named_datatype(hid_t type_in, hid_t fidout, named_dt_t **named_dt_head_p, trav_table_t *travt, pack_opt_t *options)
 {
-    named_dt_t *dt = *named_dt_head_p; /* Stack pointer */
-    named_dt_t *dt_ret = NULL;         /* Datatype to return */
-    H5O_info_t  oinfo;                 /* Object info of input dtype */
-    hid_t       ret_value = H5I_INVALID_HID;
+    named_dt_t  *dt = *named_dt_head_p; /* Stack pointer */
+    named_dt_t  *dt_ret = NULL;         /* Datatype to return */
+    H5O_info2_t  oinfo;                 /* Object info of input dtype */
+    int          token_cmp;
+    hid_t        ret_value = H5I_INVALID_HID;
 
-    if (H5Oget_info2(type_in, &oinfo, H5O_INFO_BASIC) < 0)
+    if (H5Oget_info3(type_in, &oinfo, H5O_INFO_BASIC) < 0)
         H5TOOLS_GOTO_ERROR(H5I_INVALID_HID, "H5Oget_info failed");
 
     if (*named_dt_head_p) {
+        if (H5Otoken_cmp(type_in, &dt->obj_token, &oinfo.token, &token_cmp) < 0)
+            H5TOOLS_GOTO_ERROR(H5I_INVALID_HID, "failed to compare object tokens");
+
         /* Stack already exists, search for the datatype */
-        while (dt && dt->addr_in != oinfo.addr)
+        while (dt && token_cmp) {
             dt = dt->next;
+
+            if (H5Otoken_cmp(type_in, &dt->obj_token, &oinfo.token, &token_cmp) < 0)
+                H5TOOLS_GOTO_ERROR(H5I_INVALID_HID, "failed to compare object tokens");
+        }
+
         dt_ret = dt;
     }
     else {
@@ -249,13 +258,14 @@ copy_named_datatype(hid_t type_in, hid_t fidout, named_dt_t **named_dt_head_p, t
                 *named_dt_head_p = dt;
 
                 /* Update the address and id */
-                dt->addr_in = travt->objs[i].objno;
+                HDmemcpy(&dt->obj_token, &travt->objs[i].obj_token, sizeof(H5O_token_t));
                 dt->id_out = H5I_INVALID_HID;
 
                 /* Check if this type is the one requested */
-                if (oinfo.addr == dt->addr_in) {
+                if (H5Otoken_cmp(type_in, &oinfo.token, &dt->obj_token, &token_cmp) < 0)
+                    H5TOOLS_GOTO_ERROR(H5I_INVALID_HID, "failed to compare object tokens");
+                if (!token_cmp)
                     dt_ret = dt;
-                }
             } /* end if named datatype */
         } /* end for each object in traversal table */
     } /* end else (create the stack) */
@@ -271,7 +281,7 @@ copy_named_datatype(hid_t type_in, hid_t fidout, named_dt_t **named_dt_head_p, t
         *named_dt_head_p = dt_ret;
 
         /* Update the address and id */
-        dt_ret->addr_in = oinfo.addr;
+        HDmemcpy(&dt_ret->obj_token, &oinfo.token, sizeof(H5O_token_t));
         dt_ret->id_out = H5I_INVALID_HID;
     } /* end if requested datatype not found */
 
@@ -355,14 +365,14 @@ copy_attr(hid_t loc_in, hid_t loc_out, named_dt_t **named_dt_head_p, trav_table_
     htri_t      is_named;      /* Whether the datatype is named */
     hsize_t     dims[H5S_MAX_RANK];/* dimensions of dataset */
     char        name[255];
-    H5O_info_t  oinfo;         /* object info */
+    H5O_info2_t oinfo;         /* object info */
     int         j;
     unsigned    u;
     hbool_t     is_ref = 0;
     H5T_class_t type_class = -1;
     int         ret_value = 0;
 
-    if (H5Oget_info2(loc_in, &oinfo, H5O_INFO_NUM_ATTRS) < 0)
+    if (H5Oget_info3(loc_in, &oinfo, H5O_INFO_NUM_ATTRS) < 0)
         H5TOOLS_GOTO_ERROR((-1), "H5Oget_info failed");
 
     /*-------------------------------------------------------------------------
@@ -752,7 +762,7 @@ check_objects(const char* fname, pack_opt_t *options)
     /* Initialize indexing options */
     h5trav_set_index(sort_by, sort_order);
     /* init table */
-    trav_table_init(&travt);
+    trav_table_init(fid, &travt);
 
     /* get the list of objects in the file */
     if (h5trav_gettable(fid, travt) < 0)
diff --git a/tools/src/h5repack/h5repack.h b/tools/src/h5repack/h5repack.h
index a0e0387..52ecb0e 100644
--- a/tools/src/h5repack/h5repack.h
+++ b/tools/src/h5repack/h5repack.h
@@ -131,7 +131,7 @@ typedef struct {
 
 
 typedef struct named_dt_t {
-    haddr_t             addr_in;    /* Address of the named dtype in the in file */
+    H5O_token_t         obj_token;  /* Object token for the named dtype in the in file */
     hid_t               id_out;     /* Open identifier for the dtype in the out file */
     struct named_dt_t   *next;      /* Next dtype */
 } named_dt_t;
diff --git a/tools/src/h5repack/h5repack_copy.c b/tools/src/h5repack/h5repack_copy.c
index 7336125..1044244 100644
--- a/tools/src/h5repack/h5repack_copy.c
+++ b/tools/src/h5repack/h5repack_copy.c
@@ -316,7 +316,7 @@ print_user_block(fnamein, fidin);
     /* Initialize indexing options */
     h5trav_set_index(sort_by, sort_order);
     /* init table */
-    trav_table_init(&travt);
+    trav_table_init(fidin, &travt);
 
     if (travt) {
         /* get the list of objects in the file */
diff --git a/tools/src/h5repack/h5repack_refs.c b/tools/src/h5repack/h5repack_refs.c
index 70204c8..e6a747d 100644
--- a/tools/src/h5repack/h5repack_refs.c
+++ b/tools/src/h5repack/h5repack_refs.c
@@ -439,7 +439,7 @@ static int copy_refs_attr(hid_t loc_in,
     hsize_t     nelmts;            /* number of elements in dataset */
     hsize_t     dims[H5S_MAX_RANK];/* dimensions of dataset */
     char        name[255];
-    H5O_info_t  oinfo;             /* Object info */
+    H5O_info2_t oinfo;             /* Object info */
     unsigned    u, i, j;
     int         rank;
     H5T_class_t type_class = -1;
@@ -454,7 +454,7 @@ static int copy_refs_attr(hid_t loc_in,
     int         ref_comp_field_n = 0;
     int         ret_value = 0;
 
-    if(H5Oget_info2(loc_in, &oinfo, H5O_INFO_NUM_ATTRS) < 0)
+    if(H5Oget_info3(loc_in, &oinfo, H5O_INFO_NUM_ATTRS) < 0)
         H5TOOLS_GOTO_ERROR((-1), "H5Oget_info failed");
 
     for(u = 0; u < (unsigned)oinfo.num_attrs; u++) {
@@ -796,16 +796,19 @@ MapIdToName(hid_t refobj_id, trav_table_t *travt)
         if(travt->objs[u].type == (h5trav_type_t)H5O_TYPE_DATASET ||
                 travt->objs[u].type == (h5trav_type_t)H5O_TYPE_GROUP ||
                 travt->objs[u].type == (h5trav_type_t)H5O_TYPE_NAMED_DATATYPE) {
-            H5O_info_t   ref_oinfo;     /* Stat for the refobj id */
+            H5O_info2_t ref_oinfo;     /* Stat for the refobj id */
+            int         token_cmp;
 
             /* obtain information to identify the referenced object uniquely */
-            if(H5Oget_info2(refobj_id, &ref_oinfo, H5O_INFO_BASIC) < 0)
+            if(H5Oget_info3(refobj_id, &ref_oinfo, H5O_INFO_BASIC) < 0)
                 goto out;
 
-            if(ref_oinfo.addr == travt->objs[u].objno) {
+            if(H5Otoken_cmp(refobj_id, &ref_oinfo.token, &travt->objs[u].obj_token, &token_cmp) < 0)
+                goto out;
+            if(!token_cmp) {
                 ret = travt->objs[u].name;
                 goto out;
-            } /* end if */
+            }
         }  /* end if */
     } /* u */
 
diff --git a/tools/src/h5repack/h5repack_verify.c b/tools/src/h5repack/h5repack_verify.c
index 84cbf60..683988c 100644
--- a/tools/src/h5repack/h5repack_verify.c
+++ b/tools/src/h5repack/h5repack_verify.c
@@ -95,7 +95,7 @@ h5repack_verify(const char *in_fname, const char *out_fname, pack_opt_t *options
         * close
         *-------------------------------------------------------------------------
         */
-        if(H5Pclose(pid) < 0)
+        if (H5Pclose(pid) < 0)
             H5TOOLS_GOTO_ERROR((-1), "H5Pclose failed");
         if (H5Sclose(sid) < 0)
             H5TOOLS_GOTO_ERROR((-1), "H5Sclose failed");
@@ -114,7 +114,7 @@ h5repack_verify(const char *in_fname, const char *out_fname, pack_opt_t *options
         /* Initialize indexing options */
         h5trav_set_index(sort_by, sort_order);
         /* init table */
-        trav_table_init(&travt);
+        trav_table_init(fidout, &travt);
 
         /* get the list of objects in the file */
         if(h5trav_gettable(fidout, travt) < 0)
@@ -386,7 +386,7 @@ int h5repack_cmp_pl(const char *fname1, const char *fname2)
     /* Initialize indexing options */
     h5trav_set_index(sort_by, sort_order);
     /* init table */
-    trav_table_init(&trav);
+    trav_table_init(fid1, &trav);
     if(h5trav_gettable(fid1, trav) < 0)
         H5TOOLS_GOTO_ERROR((-1), "h5trav_gettable failed");
 
diff --git a/tools/src/h5stat/h5stat.c b/tools/src/h5stat/h5stat.c
index f160671..adc905a 100644
--- a/tools/src/h5stat/h5stat.c
+++ b/tools/src/h5stat/h5stat.c
@@ -379,13 +379,13 @@ ceil_log10(unsigned long x)
  *-------------------------------------------------------------------------
  */
 static herr_t
-attribute_stats(iter_t *iter, const H5O_info_t *oi)
+attribute_stats(iter_t *iter, const H5O_info2_t *oi, const H5O_native_info_t *native_oi)
 {
     unsigned     bin;               /* "bin" the number of objects falls in */
 
     /* Update dataset & attribute metadata info */
-    iter->attrs_btree_storage_size += oi->meta_size.attr.index_size;
-    iter->attrs_heap_storage_size += oi->meta_size.attr.heap_size;
+    iter->attrs_btree_storage_size += native_oi->meta_size.attr.index_size;
+    iter->attrs_heap_storage_size += native_oi->meta_size.attr.heap_size;
 
     /* Update small # of attribute count & limits */
     if(oi->num_attrs <= (hsize_t)sattrs_threshold)
@@ -440,7 +440,7 @@ attribute_stats(iter_t *iter, const H5O_info_t *oi)
  *-------------------------------------------------------------------------
  */
 static herr_t
-group_stats(iter_t *iter, const char *name, const H5O_info_t *oi)
+group_stats(iter_t *iter, const char *name, const H5O_info2_t *oi, const H5O_native_info_t *native_oi)
 {
     H5G_info_t ginfo;           /* Group information */
     unsigned bin;               /* "bin" the number of objects falls in */
@@ -450,8 +450,8 @@ group_stats(iter_t *iter, const char *name, const H5O_info_t *oi)
     iter->uniq_groups++;
 
     /* Get object header information */
-    iter->group_ohdr_info.total_size += oi->hdr.space.total;
-    iter->group_ohdr_info.free_size += oi->hdr.space.free;
+    iter->group_ohdr_info.total_size += native_oi->hdr.space.total;
+    iter->group_ohdr_info.free_size += native_oi->hdr.space.free;
 
     /* Get group information */
     if((ret_value = H5Gget_info_by_name(iter->fid, name, &ginfo, H5P_DEFAULT)) < 0)
@@ -484,11 +484,11 @@ group_stats(iter_t *iter, const char *name, const H5O_info_t *oi)
         (iter->group_bins[bin])++;
 
     /* Update group metadata info */
-    iter->groups_btree_storage_size += oi->meta_size.obj.index_size;
-    iter->groups_heap_storage_size += oi->meta_size.obj.heap_size;
+    iter->groups_btree_storage_size += native_oi->meta_size.obj.index_size;
+    iter->groups_heap_storage_size += native_oi->meta_size.obj.heap_size;
 
     /* Update attribute metadata info */
-    if((ret_value = attribute_stats(iter, oi)) < 0)
+    if((ret_value = attribute_stats(iter, oi, native_oi)) < 0)
         H5TOOLS_GOTO_ERROR(FAIL, "attribute_stats failed");
 
 done:
@@ -510,7 +510,7 @@ done:
  *-------------------------------------------------------------------------
  */
 static herr_t
-dataset_stats(iter_t *iter, const char *name, const H5O_info_t *oi)
+dataset_stats(iter_t *iter, const char *name, const H5O_info2_t *oi, const H5O_native_info_t *native_oi)
 {
     unsigned bin;               /* "bin" the number of objects falls in */
     hid_t did;                  /* Dataset ID */
@@ -533,18 +533,18 @@ dataset_stats(iter_t *iter, const char *name, const H5O_info_t *oi)
     iter->uniq_dsets++;
 
     /* Get object header information */
-    iter->dset_ohdr_info.total_size += oi->hdr.space.total;
-    iter->dset_ohdr_info.free_size += oi->hdr.space.free;
+    iter->dset_ohdr_info.total_size += native_oi->hdr.space.total;
+    iter->dset_ohdr_info.free_size += native_oi->hdr.space.free;
 
     if((did = H5Dopen2(iter->fid, name, H5P_DEFAULT)) < 0)
         H5TOOLS_GOTO_ERROR(FAIL, "H5Dopen() failed");
 
     /* Update dataset metadata info */
-    iter->datasets_index_storage_size += oi->meta_size.obj.index_size;
-    iter->datasets_heap_storage_size += oi->meta_size.obj.heap_size;
+    iter->datasets_index_storage_size += native_oi->meta_size.obj.index_size;
+    iter->datasets_heap_storage_size += native_oi->meta_size.obj.heap_size;
 
     /* Update attribute metadata info */
-    if((ret_value = attribute_stats(iter, oi)) < 0)
+    if((ret_value = attribute_stats(iter, oi, native_oi)) < 0)
         H5TOOLS_GOTO_ERROR(FAIL, "attribute_stats() failed");
 
     /* Get storage info */
@@ -702,7 +702,7 @@ done:
  *-------------------------------------------------------------------------
  */
 static herr_t
-datatype_stats(iter_t *iter, const H5O_info_t *oi)
+datatype_stats(iter_t *iter, const H5O_info2_t *oi, const H5O_native_info_t *native_oi)
 {
     herr_t ret_value = SUCCEED;
 
@@ -710,11 +710,11 @@ datatype_stats(iter_t *iter, const H5O_info_t *oi)
     iter->uniq_dtypes++;
 
     /* Get object header information */
-    iter->dtype_ohdr_info.total_size += oi->hdr.space.total;
-    iter->dtype_ohdr_info.free_size += oi->hdr.space.free;
+    iter->dtype_ohdr_info.total_size += native_oi->hdr.space.total;
+    iter->dtype_ohdr_info.free_size += native_oi->hdr.space.free;
 
     /* Update attribute metadata info */
-    if((ret_value = attribute_stats(iter, oi)) < 0)
+    if((ret_value = attribute_stats(iter, oi, native_oi)) < 0)
         H5TOOLS_GOTO_ERROR(FAIL, "attribute_stats() failed");
 done:
      return ret_value;
@@ -735,31 +735,36 @@ done:
  *-------------------------------------------------------------------------
  */
 static herr_t
-obj_stats(const char *path, const H5O_info_t *oi, const char *already_visited,
+obj_stats(const char *path, const H5O_info2_t *oi, const char *already_visited,
     void *_iter)
 {
+    H5O_native_info_t native_info;
     iter_t *iter = (iter_t *)_iter;
     herr_t ret_value = SUCCEED;
 
     /* If the object has already been seen then just return */
     if(NULL == already_visited) {
+        /* Retrieve the native info for the object */
+        if(H5Oget_native_info_by_name(iter->fid, path, &native_info, H5O_NATIVE_INFO_ALL, H5P_DEFAULT) < 0)
+            H5TOOLS_GOTO_ERROR(FAIL, "H5Oget_native_info_by_name failed");
+
         /* Gather some general statistics about the object */
         if(oi->rc > iter->max_links)
             iter->max_links = oi->rc;
 
         switch(oi->type) {
             case H5O_TYPE_GROUP:
-                if(group_stats(iter, path, oi) < 0)
+                if(group_stats(iter, path, oi, &native_info) < 0)
                     H5TOOLS_GOTO_ERROR(FAIL, "group_stats failed");
                 break;
 
             case H5O_TYPE_DATASET:
-                if(dataset_stats(iter, path, oi) < 0)
+                if(dataset_stats(iter, path, oi, &native_info) < 0)
                     H5TOOLS_GOTO_ERROR(FAIL, "dataset_stats failed");
                 break;
 
             case H5O_TYPE_NAMED_DATATYPE:
-                if(datatype_stats(iter, oi) < 0)
+                if(datatype_stats(iter, oi, &native_info) < 0)
                     H5TOOLS_GOTO_ERROR(FAIL, "datatype_stats failed");
                 break;
 
@@ -792,7 +797,7 @@ done:
  *-------------------------------------------------------------------------
  */
 static herr_t
-lnk_stats(const char H5_ATTR_UNUSED *path, const H5L_info_t *li, void *_iter)
+lnk_stats(const char H5_ATTR_UNUSED *path, const H5L_info2_t *li, void *_iter)
 {
     iter_t *iter = (iter_t *)_iter;
 
diff --git a/tools/test/h5dump/errfiles/tdset-2.err b/tools/test/h5dump/errfiles/tdset-2.err
index 2d70b35..39bbb0e 100644
--- a/tools/test/h5dump/errfiles/tdset-2.err
+++ b/tools/test/h5dump/errfiles/tdset-2.err
@@ -27,7 +27,7 @@ HDF5-DIAG: Error detected in HDF5 (version (number)) thread (IDs):
     major: Symbol table
     minor: Object not found
 HDF5-DIAG: Error detected in HDF5 (version (number)) thread (IDs):
-  #000: (file name) line (number) in H5Lget_info(): unable to get link info
+  #000: (file name) line (number) in H5Lget_info2(): unable to get link info
     major: Links
     minor: Can't get value
   #001: (file name) line (number) in H5VL_link_get(): link get failed
diff --git a/tools/test/h5dump/errfiles/tperror.err b/tools/test/h5dump/errfiles/tperror.err
index b0b908b..e2f24c1 100644
--- a/tools/test/h5dump/errfiles/tperror.err
+++ b/tools/test/h5dump/errfiles/tperror.err
@@ -27,7 +27,7 @@ HDF5-DIAG: Error detected in HDF5 (version (number)) thread (IDs):
     major: Symbol table
     minor: Object not found
 HDF5-DIAG: Error detected in HDF5 (version (number)) thread (IDs):
-  #000: (file name) line (number) in H5Lget_info(): unable to get link info
+  #000: (file name) line (number) in H5Lget_info2(): unable to get link info
     major: Links
     minor: Can't get value
   #001: (file name) line (number) in H5VL_link_get(): link get failed
diff --git a/tools/test/h5dump/errfiles/tqmarkfile.err b/tools/test/h5dump/errfiles/tqmarkfile.err
index 2c4f1ff..4c3b2ef 100644
--- a/tools/test/h5dump/errfiles/tqmarkfile.err
+++ b/tools/test/h5dump/errfiles/tqmarkfile.err
@@ -15,7 +15,7 @@ HDF5-DIAG: Error detected in HDF5 (version (number)) thread (IDs):
     major: Symbol table
     minor: Object not found
 HDF5-DIAG: Error detected in HDF5 (version (number)) thread (IDs):
-  #000: (file name) line (number) in H5Lget_info(): unable to get link info
+  #000: (file name) line (number) in H5Lget_info2(): unable to get link info
     major: Symbol table
     minor: Object not found
   #001: (file name) line (number) in H5L_get_info(): name doesn't exist