Merging in latest from upstream (HDFFV/hdf5:refs/heads/develop)

* commit '4830a1796441abbb5a4fbd2cff9a651f2a0d066e':
  Updated tools dump output when dataset offset is undefined.
  Added checks for native optional call support in some of the tools.
  Misc changes for h5dump VOL changes.

7 files changed, 136 insertions, 80 deletions

diff --git a/tools/lib/h5tools_dump.c b/tools/lib/h5tools_dump.c
index c10b36b..cd7c3d2 100644
--- a/tools/lib/h5tools_dump.c
+++ b/tools/lib/h5tools_dump.c
@@ -2099,11 +2099,11 @@ h5tools_print_datatype(FILE *stream, h5tools_str_t *buffer, const h5tool_format_
 
         if(obj) {
             if(!obj->recorded) {
-                char *obj_addr_str = NULL;
+                char *obj_tok_str = NULL;
 
-                H5Otoken_to_str(type, &oinfo.token, &obj_addr_str);
-                h5tools_str_append(buffer,"\"/#%s\"", obj_addr_str);
-                H5free_memory(obj_addr_str);
+                H5Otoken_to_str(type, &oinfo.token, &obj_tok_str);
+                h5tools_str_append(buffer,"\"/#%s\"", obj_tok_str);
+                H5free_memory(obj_tok_str);
             }
             else
                 h5tools_str_append(buffer, "\"%s\"", obj->objname);
@@ -3110,7 +3110,7 @@ h5tools_print_fill_value(h5tools_str_t *buffer/*in,out*/, const h5tool_format_t
  */
 void
 h5tools_dump_dcpl(FILE *stream, const h5tool_format_t *info,
-        h5tools_context_t *ctx, hid_t dcpl_id, hid_t type_id, hid_t obj_id)
+        h5tools_context_t *ctx, hid_t dcpl_id, hid_t type_id, hid_t dset_id)
 {
     int              nfilters;       /* number of filters */
     int              rank;           /* rank */
@@ -3141,7 +3141,7 @@ h5tools_dump_dcpl(FILE *stream, const h5tool_format_t *info,
     if (info->line_ncols > 0)
         ncols = info->line_ncols;
 
-    storage_size = H5Dget_storage_size(obj_id);
+    storage_size = H5Dget_storage_size(dset_id);
     nfilters = H5Pget_nfilters(dcpl_id);
     HDstrcpy(f_name,"\0");
 
@@ -3182,8 +3182,8 @@ h5tools_dump_dcpl(FILE *stream, const h5tool_format_t *info,
                 double ratio = 0;
                 int ok = 0;
 
-                hid_t tid = H5Dget_type(obj_id);
-                hid_t sid = H5Dget_space(obj_id);
+                hid_t tid = H5Dget_type(dset_id);
+                hid_t sid = H5Dget_space(dset_id);
                 size_t datum_size = H5Tget_size(tid);
                 int ndims = H5Sget_simple_extent_dims(sid, dims, NULL);
 
@@ -3241,16 +3241,15 @@ h5tools_dump_dcpl(FILE *stream, const h5tool_format_t *info,
             break;
         case H5D_CONTIGUOUS:
             {
-                int next;
+                int n_external;
 
-                next = H5Pget_external_count(dcpl_id);
+                n_external = H5Pget_external_count(dcpl_id);
 
-                /*-------------------------------------------------------------------------
-                 * EXTERNAL_FILE
-                 *-------------------------------------------------------------------------
-                 */
                 ctx->indent_level++;
-                if (next) {
+                if (n_external) {
+
+                    /* EXTERNAL FILE */
+
                     ctx->need_prefix = TRUE;
 
                     h5tools_str_reset(&buffer);
@@ -3264,7 +3263,7 @@ h5tools_dump_dcpl(FILE *stream, const h5tool_format_t *info,
                     h5tools_render_element(stream, info, ctx, &buffer, &curr_pos, (size_t) ncols, (hsize_t) 0, (hsize_t) 0);
 
                     ctx->indent_level++;
-                    for (j = 0; j < (unsigned) next; j++) {
+                    for (j = 0; j < (unsigned) n_external; j++) {
                         H5Pget_external(dcpl_id, j, sizeof(name), name, &offset, &size);
 
                         ctx->need_prefix = TRUE;
@@ -3284,6 +3283,11 @@ h5tools_dump_dcpl(FILE *stream, const h5tool_format_t *info,
                 }
                 else {
                     haddr_t ioffset;
+                    void *obj = NULL;
+                    hid_t connector_id = H5I_INVALID_HID;
+                    hbool_t supported = FALSE;
+
+                    /* NORMAL FILE */
 
                     ctx->need_prefix = TRUE;
 
@@ -3297,12 +3301,26 @@ h5tools_dump_dcpl(FILE *stream, const h5tool_format_t *info,
                     h5tools_str_append(&buffer,"SIZE " HSIZE_T_FORMAT, storage_size);
                     h5tools_render_element(stream, info, ctx, &buffer, &curr_pos, (size_t) ncols, (hsize_t) 0, (hsize_t) 0);
 
-                    ctx->need_prefix = TRUE;
+                    /* Only dump the offset if the VOL connector implements
+                     * the functionality.
+                     */
+                    obj = H5VLobject(dset_id);
+                    connector_id = H5VLget_connector_id(dset_id);
+                    H5VLintrospect_opt_query(obj, connector_id, H5VL_SUBCLS_DATASET, H5VL_NATIVE_DATASET_GET_OFFSET, &supported);
+                    H5VLclose(connector_id);
 
-                    h5tools_str_reset(&buffer);
-                    ioffset = H5Dget_offset(obj_id);
-                    h5tools_str_append(&buffer, "OFFSET "H5_PRINTF_HADDR_FMT, ioffset);
-                    h5tools_render_element(stream, info, ctx, &buffer, &curr_pos, (size_t) ncols, (hsize_t) 0, (hsize_t) 0);
+                    if (supported) {
+
+                        ctx->need_prefix = TRUE;
+
+                        h5tools_str_reset(&buffer);
+                        ioffset = H5Dget_offset(dset_id);
+                        if (HADDR_UNDEF == ioffset)
+                            h5tools_str_append(&buffer, "OFFSET HADDR_UNDEF");
+                        else
+                            h5tools_str_append(&buffer, "OFFSET "H5_PRINTF_HADDR_FMT, ioffset);
+                        h5tools_render_element(stream, info, ctx, &buffer, &curr_pos, (size_t) ncols, (hsize_t) 0, (hsize_t) 0);
+                    }
                 }
                 ctx->indent_level--;
             }
@@ -3311,23 +3329,23 @@ h5tools_dump_dcpl(FILE *stream, const h5tool_format_t *info,
         case H5D_VIRTUAL:
             {
                 char dsetname[256];     /* virtual datset name       */
-                size_t vmaps;
+                size_t n_vmaps;
 
-                H5Pget_virtual_count(dcpl_id, &vmaps);
+                H5Pget_virtual_count(dcpl_id, &n_vmaps);
 
-                if (vmaps) {
-                    size_t next;
+                if (n_vmaps) {
+                    size_t curr_vmap;
                     ssize_t H5_ATTR_NDEBUG_UNUSED ssize_out;
 
                     ctx->indent_level++;
-                    for (next = 0; next < (unsigned) vmaps; next++) {
-                        hid_t virtual_vspace = H5Pget_virtual_vspace(dcpl_id, next);
-                        hid_t virtual_srcspace = H5Pget_virtual_srcspace(dcpl_id, next);
+                    for (curr_vmap = 0; curr_vmap < n_vmaps; curr_vmap++) {
+                        hid_t virtual_vspace = H5Pget_virtual_vspace(dcpl_id, curr_vmap);
+                        hid_t virtual_srcspace = H5Pget_virtual_srcspace(dcpl_id, curr_vmap);
 
                         ctx->need_prefix = TRUE;
 
                         h5tools_str_reset(&buffer);
-                        h5tools_str_append(&buffer, "%s %ld %s ", VDS_MAPPING, next, BEGIN);
+                        h5tools_str_append(&buffer, "%s %ld %s ", VDS_MAPPING, curr_vmap, BEGIN);
                         h5tools_render_element(stream, info, ctx, &buffer, &curr_pos, (size_t) ncols, (hsize_t) 0, (hsize_t) 0);
 
                         ctx->indent_level++;
@@ -3358,14 +3376,14 @@ h5tools_dump_dcpl(FILE *stream, const h5tool_format_t *info,
 
                         ctx->indent_level++;
 
-                        ssize_out = H5Pget_virtual_filename(dcpl_id, next, NULL, 0);
+                        ssize_out = H5Pget_virtual_filename(dcpl_id, curr_vmap, NULL, 0);
                         HDassert(ssize_out > 0);
                         HDassert((size_t)ssize_out < sizeof(name));
-                        H5Pget_virtual_filename(dcpl_id, next, name, sizeof(name));
-                        ssize_out = H5Pget_virtual_dsetname(dcpl_id, next, NULL, 0);
+                        H5Pget_virtual_filename(dcpl_id, curr_vmap, name, sizeof(name));
+                        ssize_out = H5Pget_virtual_dsetname(dcpl_id, curr_vmap, NULL, 0);
                         HDassert(ssize_out > 0);
                         HDassert((size_t)ssize_out < sizeof(name));
-                        H5Pget_virtual_dsetname(dcpl_id, next, dsetname, sizeof(dsetname));
+                        H5Pget_virtual_dsetname(dcpl_id, curr_vmap, dsetname, sizeof(dsetname));
 
                         ctx->need_prefix = TRUE;
 
@@ -3629,7 +3647,7 @@ h5tools_dump_dcpl(FILE *stream, const h5tool_format_t *info,
             break;
         case H5D_FILL_VALUE_USER_DEFINED:
             ctx->indent_level--;
-            h5tools_print_fill_value(&buffer, info, ctx, dcpl_id, type_id, obj_id);
+            h5tools_print_fill_value(&buffer, info, ctx, dcpl_id, type_id, dset_id);
             ctx->indent_level++;
             break;
         case H5D_FILL_VALUE_ERROR:
@@ -3714,6 +3732,17 @@ h5tools_dump_comment(FILE *stream, const h5tool_format_t *info, h5tools_context_
                                              * instead of the current stripmine position i; this is necessary
                                              * to print the array indices
                                              */
+    void *obj = NULL;
+    hid_t connector_id = H5I_INVALID_HID;
+    hbool_t supported = FALSE;
+
+    /* Check if comments are supported and return if not */
+    obj = H5VLobject(obj_id);
+    connector_id = H5VLget_connector_id(obj_id);
+    H5VLintrospect_opt_query(obj, connector_id, H5VL_SUBCLS_OBJECT, H5VL_NATIVE_OBJECT_GET_COMMENT, &supported);
+    H5VLclose(connector_id);
+    if (!supported)
+        return;
 
     /* setup */
     HDmemset(&buffer, 0, sizeof(h5tools_str_t));
@@ -3723,8 +3752,7 @@ h5tools_dump_comment(FILE *stream, const h5tool_format_t *info, h5tools_context_
 
     cmt_bufsize = H5Oget_comment(obj_id, comment, buf_size);
 
-    /* call H5Oget_comment again with the correct value.
-     * If the call to H5Oget_comment returned an error, skip this block */
+    /* call H5Oget_comment again with the correct value */
     if (cmt_bufsize > 0) {
         comment = (char *)HDmalloc((size_t)(cmt_bufsize+1)); /* new_size including null terminator */
         if(comment) {
@@ -3739,7 +3767,7 @@ h5tools_dump_comment(FILE *stream, const h5tool_format_t *info, h5tools_context_
                 h5tools_render_element(stream, info, ctx, &buffer, &curr_pos, (size_t)ncols, (hsize_t)0, (hsize_t)0);
 
                 h5tools_str_close(&buffer);
-            } /* end if */
+            }
             HDfree(comment);
         }
     }
diff --git a/tools/lib/h5tools_str.c b/tools/lib/h5tools_str.c
index 6515ecd..5c777a9 100644
--- a/tools/lib/h5tools_str.c
+++ b/tools/lib/h5tools_str.c
@@ -1101,12 +1101,12 @@ h5tools_str_sprint(h5tools_str_t *str, const h5tool_format_t *info, hid_t contai
                                 {
                                 /* Object references -- show the type and OID of the referenced object. */
                                 H5O_info2_t oi;
-                                char *obj_addr_str = NULL;
+                                char *obj_tok_str = NULL;
 
                                 H5TOOLS_DEBUG("ref_type is H5R_OBJECT1");
                                 if((obj = H5Ropen_object(ref_vp, H5P_DEFAULT, H5P_DEFAULT)) >= 0) {
                                     H5Oget_info3(obj, &oi, H5O_INFO_BASIC);
-                                    H5Otoken_to_str(obj, &oi.token, &obj_addr_str);
+                                    H5Otoken_to_str(obj, &oi.token, &obj_tok_str);
                                 }
                                 else
                                     H5TOOLS_ERROR(NULL, "H5Ropen_object H5R_OBJECT1 failed");
@@ -1137,13 +1137,13 @@ h5tools_str_sprint(h5tools_str_t *str, const h5tool_format_t *info, hid_t contai
 
                                 /* Print OID */
                                 if(info->obj_hidefileno)
-                                    h5tools_str_append(str, info->obj_format, obj_addr_str);
+                                    h5tools_str_append(str, info->obj_format, obj_tok_str);
                                 else
-                                    h5tools_str_append(str, info->obj_format, oi.fileno, obj_addr_str);
+                                    h5tools_str_append(str, info->obj_format, oi.fileno, obj_tok_str);
 
-                                if(obj_addr_str) {
-                                    H5free_memory(obj_addr_str);
-                                    obj_addr_str = NULL;
+                                if(obj_tok_str) {
+                                    H5free_memory(obj_tok_str);
+                                    obj_tok_str = NULL;
                                 }
 
                                 if(obj >= 0)
diff --git a/tools/lib/h5tools_utils.c b/tools/lib/h5tools_utils.c
index 8a7a4dd..1a1c2db 100644
--- a/tools/lib/h5tools_utils.c
+++ b/tools/lib/h5tools_utils.c
@@ -648,17 +648,17 @@ static void
 dump_table(hid_t fid, char* tablename, table_t *table)
 {
     unsigned u;
-    char *obj_addr_str = NULL;
+    char *obj_tok_str = NULL;
 
     PRINTSTREAM(rawoutstream,"%s: # of entries = %d\n", tablename,table->nobjs);
     for (u = 0; u < table->nobjs; u++) {
-        H5VLconnector_token_to_str(fid, table->objs[u].obj_token, &obj_addr_str);
+        H5VLconnector_token_to_str(fid, table->objs[u].obj_token, &obj_tok_str);
 
-        PRINTSTREAM(rawoutstream,"%s %s %d %d\n", obj_addr_str,
+        PRINTSTREAM(rawoutstream,"%s %s %d %d\n", obj_tok_str,
            table->objs[u].objname,
            table->objs[u].displayed, table->objs[u].recorded);
 
-        H5VLfree_token_str(fid, obj_addr_str);
+        H5VLfree_token_str(fid, obj_tok_str);
     }
 }
 
diff --git a/tools/src/h5dump/h5dump_ddl.c b/tools/src/h5dump/h5dump_ddl.c
index 9414f5b..e97ab7e 100644
--- a/tools/src/h5dump/h5dump_ddl.c
+++ b/tools/src/h5dump/h5dump_ddl.c
@@ -1136,6 +1136,22 @@ dump_fcpl(hid_t fid)
     unsigned sym_ik;    /* symbol table B-tree internal 'K' value */
     unsigned istore_ik; /* indexed storage B-tree internal 'K' value */
 
+    void *obj = NULL;
+    hid_t connector_id = H5I_INVALID_HID;
+    hbool_t supported = FALSE;
+
+    /* Dumping the information here only makes sense for the native
+     * VOL connector. The only VOL call here is H5Fget_info(), so we'll
+     * use that as a proxy for "native-ness". If that isn't supported, we'll
+     * just return.
+     */
+    obj = H5VLobject(fid);
+    connector_id = H5VLget_connector_id(fid);
+    H5VLintrospect_opt_query(obj, connector_id, H5VL_SUBCLS_FILE, H5VL_NATIVE_FILE_GET_INFO, &supported);
+    H5VLclose(connector_id);
+    if (!supported)
+        return;
+
     fcpl=H5Fget_create_plist(fid);
     H5Fget_info2(fid, &finfo);
     H5Pget_userblock(fcpl,&userblock);
diff --git a/tools/src/h5ls/h5ls.c b/tools/src/h5ls/h5ls.c
index d954367..f82827c 100644
--- a/tools/src/h5ls/h5ls.c
+++ b/tools/src/h5ls/h5ls.c
@@ -2334,13 +2334,13 @@ list_obj(const char *name, const H5O_info2_t *oinfo, const char *first_seen, voi
         h5tools_render_element(rawoutstream, info, &ctx, &buffer, &curr_pos, (size_t)info->line_ncols, (hsize_t)0, (hsize_t)0);
     } /* end if */
     else {
-        hid_t obj = H5I_INVALID_HID;               /* ID of object opened */
+        hid_t obj_id = H5I_INVALID_HID;               /* ID of object opened */
 
         /* Open the object.  Not all objects can be opened.  If this is the case
          * then return right away.
          */
         H5TOOLS_DEBUG("Open object name=%s", name);
-        if (obj_type >= 0 && (obj = H5Oopen(iter->fid, name, H5P_DEFAULT)) < 0) {
+        if (obj_type >= 0 && (obj_id = H5Oopen(iter->fid, name, H5P_DEFAULT)) < 0) {
             h5tools_str_reset(&buffer);
             h5tools_str_append(&buffer, " *ERROR*\n");
             h5tools_render_element(rawoutstream, info, &ctx, &buffer, &curr_pos, (size_t)info->line_ncols, (hsize_t)0, (hsize_t)0);
@@ -2350,7 +2350,7 @@ list_obj(const char *name, const H5O_info2_t *oinfo, const char *first_seen, voi
         /* List the first line of information for the object. */
         H5TOOLS_DEBUG("Object type:%d", obj_type);
         if (obj_type >= 0 && dispatch_g[obj_type].list1)
-            (dispatch_g[obj_type].list1)(obj);
+            (dispatch_g[obj_type].list1)(obj_id);
         if (!iter->symlink_target || (verbose_g > 0)) {
             h5tools_str_reset(&buffer);
             h5tools_str_append(&buffer, "\n");
@@ -2362,23 +2362,26 @@ list_obj(const char *name, const H5O_info2_t *oinfo, const char *first_seen, voi
         if (verbose_g > 0) {
             size_t buf_size = 0;
             char* comment = NULL;
-            char* obj_addr_str = NULL;
+            char* obj_tok_str = NULL;
             ssize_t cmt_bufsize = -1;
+            void *obj = NULL;
+            hid_t connector_id = H5I_INVALID_HID;
+            hbool_t supported = FALSE;
 
             /* Display attributes */
             H5TOOLS_DEBUG("Display attributes");
             if (obj_type >= 0)
-                H5Aiterate2(obj, H5_INDEX_NAME, H5_ITER_INC, NULL, list_attr, NULL);
+                H5Aiterate2(obj_id, H5_INDEX_NAME, H5_ITER_INC, NULL, list_attr, NULL);
 
             /* Object location & reference count */
-            H5Otoken_to_str(obj, &oinfo->token, &obj_addr_str);
+            H5Otoken_to_str(obj_id, &oinfo->token, &obj_tok_str);
 
             h5tools_str_reset(&buffer);
-            h5tools_str_append(&buffer, "    %-10s %lu:%s\n", "Location:", oinfo->fileno, obj_addr_str);
+            h5tools_str_append(&buffer, "    %-10s %lu:%s\n", "Location:", oinfo->fileno, obj_tok_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);
+            H5free_memory(obj_tok_str);
 
             /* Modification time */
             if (oinfo->mtime > 0) {
@@ -2397,36 +2400,45 @@ list_obj(const char *name, const H5O_info2_t *oinfo, const char *first_seen, voi
                 } /* end if */
             } /* end if */
 
-            /* Object comment */
-            cmt_bufsize = H5Oget_comment(obj, comment, buf_size);
-
-            /* if the actual length of the comment is longer than cmt_bufsize, then call
-             * H5Oget_comment again with the correct value.
-             * If the call to H5Oget_comment returned an error, skip this block */
-            if (cmt_bufsize > 0) {
-                comment = (char *)HDmalloc((size_t)cmt_bufsize + 1); /* new_size including null terminator */
-                if (comment) {
-                    cmt_bufsize = H5Oget_comment(obj, comment, (size_t)cmt_bufsize);
-                    if (cmt_bufsize > 0) {
-                        comment[cmt_bufsize] = 0;
-                        h5tools_str_reset(&buffer);
-                        h5tools_str_append(&buffer, "    %-10s \"", "Comment:");
-                        print_string(&buffer, comment, FALSE);
-                        h5tools_str_append(&buffer, "\"\n");
-                        h5tools_render_element(rawoutstream, info, &ctx, &buffer, &curr_pos, (size_t)info->line_ncols, (hsize_t)0, (hsize_t)0);
-                    } /* end if */
-                    HDfree(comment);
+            /* Only emit comments if the VOL connector supports that */
+            obj = H5VLobject(obj_id);
+            connector_id = H5VLget_connector_id(obj_id);
+            H5VLintrospect_opt_query(obj, connector_id, H5VL_SUBCLS_OBJECT, H5VL_NATIVE_OBJECT_GET_COMMENT, &supported);
+            H5VLclose(connector_id);
+
+            if (supported) {
+
+                /* Object comment */
+                cmt_bufsize = H5Oget_comment(obj_id, comment, buf_size);
+
+                /* if the actual length of the comment is longer than cmt_bufsize, then call
+                 * H5Oget_comment again with the correct value.
+                 */
+                if (cmt_bufsize > 0) {
+                    comment = (char *)HDmalloc((size_t)cmt_bufsize + 1); /* new_size including null terminator */
+                    if (comment) {
+                        cmt_bufsize = H5Oget_comment(obj_id, comment, (size_t)cmt_bufsize);
+                        if (cmt_bufsize > 0) {
+                            comment[cmt_bufsize] = 0;
+                            h5tools_str_reset(&buffer);
+                            h5tools_str_append(&buffer, "    %-10s \"", "Comment:");
+                            print_string(&buffer, comment, FALSE);
+                            h5tools_str_append(&buffer, "\"\n");
+                            h5tools_render_element(rawoutstream, info, &ctx, &buffer, &curr_pos, (size_t)info->line_ncols, (hsize_t)0, (hsize_t)0);
+                        } /* end if */
+                        HDfree(comment);
+                    }
                 }
             }
         } /* end if */
 
         /* Detailed list for object */
         if (obj_type >= 0 && dispatch_g[obj_type].list2)
-            (dispatch_g[obj_type].list2)(obj, name);
+            (dispatch_g[obj_type].list2)(obj_id, name);
 
         /* Close the object. */
         if (obj_type >= 0)
-            H5Oclose(obj);
+            H5Oclose(obj_id);
     } /* end else */
 
 done:
diff --git a/tools/src/h5repack/h5repack.c b/tools/src/h5repack/h5repack.c
index 081bdcd..b2cb02b 100644
--- a/tools/src/h5repack/h5repack.c
+++ b/tools/src/h5repack/h5repack.c
@@ -259,7 +259,7 @@ copy_named_datatype(hid_t type_in, hid_t fidout, named_dt_t **named_dt_head_p, t
                 dt->next = *named_dt_head_p;
                 *named_dt_head_p = dt;
 
-                /* Update the address and id */
+                /* Update the token/address and id */
                 HDmemcpy(&dt->obj_token, &travt->objs[i].obj_token, sizeof(H5O_token_t));
                 dt->id_out = H5I_INVALID_HID;
 
@@ -282,7 +282,7 @@ copy_named_datatype(hid_t type_in, hid_t fidout, named_dt_t **named_dt_head_p, t
         dt_ret->next = *named_dt_head_p;
         *named_dt_head_p = dt_ret;
 
-        /* Update the address and id */
+        /* Update the token/address and id */
         HDmemcpy(&dt_ret->obj_token, &oinfo.token, sizeof(H5O_token_t));
         dt_ret->id_out = H5I_INVALID_HID;
     } /* end if requested datatype not found */
diff --git a/tools/testfiles/tgrpnullspace.ddl b/tools/testfiles/tgrpnullspace.ddl
index 2b91527..7c1ef6c 100644
--- a/tools/testfiles/tgrpnullspace.ddl
+++ b/tools/testfiles/tgrpnullspace.ddl
@@ -13,7 +13,7 @@ GROUP "/" {
          STORAGE_LAYOUT {
             CONTIGUOUS
             SIZE 0
-            OFFSET 18446744073709551615
+            OFFSET HADDR_UNDEF
          }
          FILTERS {
             NONE