Merge pull request #876 in HDFFV/hdf5 from ~VCHOI/my_hdf5_fork:bugfix/version_bounds to develop

* commit 'b4294d8d3e5937527e9814f23d04df412ebbe770':
  Added comment for clarification about latest as 1.10. Platforms tested:     Linux/64 (jelly)     Linux/32 (jam)
  Fixed typos Platforms tested:     Linux/32 (jam)
  Additional tests Description:     - Revised and add more variety to version bound tests per review     - Revised gen_bounds.c per review Platforms tested:     Linux/64 (jelly)     Linux/32 (jam)     Darwin (osx1010test)
  Added gen_bounds
  Cleaned up per comments in PR# 876
  Modifications made based on comments from pull request.
  Added gen_bounds.c
  Added gen_bounds.c
  Fix bounds check for the generation of cache image.
  Modify usage description for -j and -k options so that it is more informative.
  Modify h5repack usage so that it is more descriptive.
  Changes made based on code reviews.
  Further improvement
  Fixed comment.
  Adding data file generator Description:     Added gen_bounds.c to generate the following files:     - bounds_earliest_latest.h5     - bounds_earliest_v18.h5     - bounds_latest_latest.h5     - bounds_v18_latest.h5     - bounds_v18_v18.h5     for testing the version bounds fix in 1.8 and 1.6.
  Initial checkin for library version bounds Code changes to provide versioning support when adding to the enumerated defines for H5F_libver_t.

1 files changed, 1878 insertions, 7 deletions

diff --git a/test/tfile.c b/test/tfile.c
index 80ba4da..8b66603 100644
--- a/test/tfile.c
+++ b/test/tfile.c
@@ -24,15 +24,31 @@
 #include "H5srcdir.h"
 
 #include "H5Bprivate.h"
+#include "H5Iprivate.h"
 #include "H5Pprivate.h"
 
 /*
  * This file needs to access private information from the H5F package.
  * This file also needs to access the file testing code.
  */
-#define H5F_FRIEND		/*suppress error about including H5Fpkg	  */
+#define H5F_FRIEND		/*suppress error about including H5Fpkg */
 #define H5F_TESTING
-#include "H5Fpkg.h"		/* File access	 			*/
+#include "H5Fpkg.h"		/* File access	 			            */
+
+#define H5D_FRIEND      /*suppress error about including H5Dpkg */
+#include "H5Dpkg.h"     /* Dataset access                       */
+
+#define H5S_FRIEND      /*suppress error about including H5Spkg */
+#include "H5Spkg.h"     /* Dataspace                            */
+
+#define H5T_FRIEND      /*suppress error about including H5Tpkg */
+#include "H5Tpkg.h"     /* Datatype                             */
+
+#define H5A_FRIEND      /*suppress error about including H5Apkg */
+#include "H5Apkg.h"     /* Attributes                           */
+
+#define H5O_FRIEND      /*suppress error about including H5Opkg */
+#include "H5Opkg.h"     /* Object headers                       */
 
 #define BAD_USERBLOCK_SIZE1  (hsize_t)1
 #define BAD_USERBLOCK_SIZE2  (hsize_t)2
@@ -151,6 +167,25 @@ const char *FILESPACE_NAME[] = {
     NULL
 };
 
+/* Local test function declarations for version bounds */
+static void test_libver_bounds_low_high(void);
+static void test_libver_bounds_super(hid_t fapl);
+static void test_libver_bounds_super_create(hid_t fapl, hid_t fcpl, htri_t is_swmr);
+static void test_libver_bounds_super_open(hid_t fapl, hid_t fcpl, htri_t is_swmr);
+static void test_libver_bounds_obj(hid_t fapl);
+static void test_libver_bounds_dataset(hid_t fapl);
+static void test_libver_bounds_dataspace(hid_t fapl);
+static void test_libver_bounds_datatype(hid_t fapl);
+static void test_libver_bounds_datatype_check(hid_t fapl, hid_t tid);
+static void test_libver_bounds_attributes(hid_t fapl);
+
+#define FILE8			"tfile8.h5"	/* Test file */
+
+#define DSET_NULL	"DSET_NULL"
+#define DSET		"DSET"
+#define DSETA		"DSETA"
+#define DSETB		"DSETB"
+#define DSETC		"DSETC"
 
 static void
 create_objects(hid_t, hid_t, hid_t *, hid_t *, hid_t *, hid_t *);
@@ -2135,7 +2170,7 @@ test_file_double_file_dataset_open(hbool_t new_format)
 
     /* Create a chunked dataset with fixed array indexing */
     sid1 = H5Screate_simple(1, dims, max_dims0);
-    CHECK(sid1, FAIL, "H5Screate");
+    CHECK(sid1, FAIL, "H5Screate_simple");
     tid1 = H5Tcopy(H5T_C_S1);
     CHECK(tid1, FAIL, "H5Tcopy");
     ret = H5Tset_size(tid1, H5T_VARIABLE);
@@ -2161,7 +2196,7 @@ test_file_double_file_dataset_open(hbool_t new_format)
 
     /* Create a chunked dataset with extensible array indexing */
     sid1 = H5Screate_simple(1, dims, max_dims1);
-    CHECK(sid1, FAIL, "H5Screate");
+    CHECK(sid1, FAIL, "H5Screate_simple");
     tid1 = H5Tcopy(H5T_C_S1);
     CHECK(tid1, FAIL, "H5Tcopy");
     ret = H5Tset_size(tid1, H5T_VARIABLE);
@@ -2190,7 +2225,7 @@ test_file_double_file_dataset_open(hbool_t new_format)
 
     /* Create a chunked dataset with v2 btree indexing */
     sid2 = H5Screate_simple(2, dims2, max_dims2);
-    CHECK(sid2, FAIL, "H5Screate");
+    CHECK(sid2, FAIL, "H5Screate_simple");
 
     dcpl = H5Pcreate(H5P_DATASET_CREATE);
     CHECK(dcpl, FAIL, "H5Pcreate");
@@ -4884,8 +4919,8 @@ test_libver_bounds_real(H5F_libver_t libver_create, unsigned oh_vers_create,
     CHECK(group, FAIL, "H5Gcreate");
 
     ret = H5Oget_info(group, &oinfo);
-    CHECK(ret, FAIL, "H5Oget_info_by_name");
-    VERIFY(oinfo.hdr.version, oh_vers_mod, "H5Oget_info_by_name");
+    CHECK(ret, FAIL, "H5Oget_info");
+    VERIFY(oinfo.hdr.version, oh_vers_mod, "H5Oget_info");
 
     ret = H5Gclose(group);
     CHECK(ret, FAIL, "H5Gclose");
@@ -4918,6 +4953,134 @@ test_libver_bounds_real(H5F_libver_t libver_create, unsigned oh_vers_create,
     CHECK(ret, FAIL, "H5Pclose");
 } /* end test_libver_bounds_real() */
 
+
+/*-------------------------------------------------------------------------
+ * Function:    test_libver_bounds_open
+ *
+ * Purpose:     Tests opening latest file with various low/high bounds.
+ *
+ * Return:      Success:	0
+ *              Failure:	number of errors
+ *
+ *-------------------------------------------------------------------------
+ */
+#define VERBFNAME        "tverbounds_dspace.h5"
+#define VERBDSNAME       "dataset 1"
+#define SPACE1_DIM1     3
+static int
+test_libver_bounds_open(void)
+{
+    hid_t file = -1;    /* File ID */
+    hid_t space = -1;   /* Dataspace ID */
+    hid_t dset = -1;    /* Dataset ID */
+    hid_t fapl = -1;    /* File access property list ID */
+    hid_t new_fapl = -1;/* File access property list ID for reopened file */
+    hid_t dcpl = -1;    /* Dataset creation property list ID */
+    hsize_t dim[1] = {SPACE1_DIM1}; /* Dataset dimensions */
+    H5F_libver_t low, high;         /* File format bounds */
+    hsize_t chunk_dim[1] = {SPACE1_DIM1}; /* Chunk dimensions */
+    herr_t ret;         /* Generic return value */
+
+    /* Output message about test being performed */
+    MESSAGE(5, ("Testing Opening File in Various Version Bounds\n"));
+
+    /* Create a file access property list */
+    fapl = H5Pcreate(H5P_FILE_ACCESS);
+    CHECK(fapl, FAIL, "H5Pcreate");
+
+    /* Create dataspace */
+    space = H5Screate_simple(1, dim, NULL);
+    CHECK(space, FAIL, "H5Screate_simple");
+
+    /* Create a dataset creation property list */
+    dcpl = H5Pcreate(H5P_DATASET_CREATE);
+    CHECK(dcpl, FAIL, "H5Pcreate");
+
+    /* Create and set chunk plist */
+    ret = H5Pset_chunk(dcpl, 1, chunk_dim);
+    CHECK(ret, FAIL, "H5Pset_chunk");
+    ret = H5Pset_deflate(dcpl, 9);
+    CHECK(ret, FAIL, "H5Pset_deflate");
+    ret = H5Pset_chunk_opts(dcpl, H5D_CHUNK_DONT_FILTER_PARTIAL_CHUNKS);
+    CHECK(ret, FAIL, "H5Pset_chunk_opts");
+
+    /* Create a file with (LATEST, LATEST) bounds, create a layout version 4
+       dataset, then close the file */
+
+    /* Set version bounds to (LATEST, LATEST) */
+    low = H5F_LIBVER_LATEST;
+    high = H5F_LIBVER_LATEST;
+    ret = H5Pset_libver_bounds(fapl, low, high);
+    CHECK(ret, FAIL, "H5Pset_libver_bounds");
+
+    /* Create the file */
+    file = H5Fcreate(VERBFNAME, H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
+    CHECK(file, FAIL, "H5Fcreate");
+
+    /* Create dataset */
+    dset = H5Dcreate2(file, VERBDSNAME, H5T_NATIVE_INT, space, H5P_DEFAULT, dcpl, H5P_DEFAULT);
+    CHECK(dset, FAIL, "H5Dcreate2");
+
+    /* Close dataset and file */
+    ret = H5Dclose(dset);
+    CHECK(ret, FAIL, "H5Dclose");
+    ret = H5Fclose(file);
+    CHECK(ret, FAIL, "H5Fclose");
+
+    /* Attempt to open latest file with (earliest, v18), should fail */
+    ret = H5Pset_libver_bounds(fapl, H5F_LIBVER_EARLIEST, H5F_LIBVER_V18);
+    H5E_BEGIN_TRY {
+        file = H5Fopen(VERBFNAME, H5F_ACC_RDONLY, fapl);
+    } H5E_END_TRY;
+    VERIFY(file, FAIL, "Attempted to open latest file with earliest version");
+
+    /* Attempt to open latest file with (v18, v18), should fail */
+    ret = H5Pset_libver_bounds(fapl, H5F_LIBVER_V18, H5F_LIBVER_V18);
+    H5E_BEGIN_TRY {
+        file = H5Fopen(VERBFNAME, H5F_ACC_RDONLY, fapl);
+    } H5E_END_TRY;
+    VERIFY(file, FAIL, "Attempted to open latest file with v18 bounds");
+
+    /* Opening VERBFNAME in these combination should succeed.
+       For each low bound, verify that it is upgraded properly */
+    high = H5F_LIBVER_LATEST;
+    for (low = H5F_LIBVER_EARLIEST; low < H5F_LIBVER_NBOUNDS; low++)
+    {
+        H5F_libver_t new_low = H5F_LIBVER_EARLIEST;
+
+        /* Set version bounds for opening file */
+        ret = H5Pset_libver_bounds(fapl, low, high);
+        CHECK(ret, FAIL, "H5Pset_libver_bounds");
+
+        /* Open the file */
+        file = H5Fopen(VERBFNAME, H5F_ACC_RDONLY, fapl);
+        CHECK(file, FAIL, "H5Fopen");
+
+        /* Get the new file access property */
+        new_fapl = H5Fget_access_plist(file);
+        CHECK(new_fapl, FAIL, "H5Fget_access_plist");
+
+        /* Get new low bound and verify that it has been upgraded properly */
+        ret = H5Pget_libver_bounds(new_fapl, &new_low, NULL);
+        CHECK(ret, FAIL, "H5Pget_libver_bounds");
+        VERIFY(new_low, H5F_LIBVER_LATEST, "Low bound should be upgraded to H5F_LIBVER_LATEST");
+
+	    ret = H5Pclose(new_fapl);
+        CHECK(ret, FAIL, "H5Pclose");
+	    ret = H5Fclose(file);
+        CHECK(ret, FAIL, "H5Fclose");
+    } /* for low */
+
+    /* Close dataspace and property lists */
+    ret = H5Sclose(space);
+    CHECK(ret, FAIL, "H5Sclose");
+	ret = H5Pclose(dcpl);
+    CHECK(ret, FAIL, "H5Pclose");
+	ret = H5Pclose(fapl);
+    CHECK(ret, FAIL, "H5Pclose");
+} /* end test_libver_bounds_open() */
+
+
 /****************************************************************
 **
 **  test_libver_bounds():
@@ -4935,8 +5098,1715 @@ test_libver_bounds(void)
     /* Run the tests */
     test_libver_bounds_real(H5F_LIBVER_EARLIEST, 1, H5F_LIBVER_LATEST, 2);
     test_libver_bounds_real(H5F_LIBVER_LATEST, 2, H5F_LIBVER_EARLIEST, 2);
+    test_libver_bounds_open();
 } /* end test_libver_bounds() */
 
+/**************************************************************************************
+**
+**  test_libver_bounds_low_high():
+**      Tests to verify that format versions are correct with the following five
+**      pairs of low/high version bounds set in fapl via H5Pset_libver_bounds():
+**          (1) (earliest, v18)
+**          (2) (earliest, v110)
+**          (3) (v18, v18)
+**          (4) (v18, v110)
+**          (5) (v110, v110)
+**
+**      For each pair of setting in fapl, verify format versions with the following 
+**      six tests:
+**          (1) test_libver_bounds_super(fapl): superblock versions
+**          (2) test_libver_bounds_obj(fapl): object header versions
+**          (3) test_libver_bounds_dataset(fapl): message versions associated with dataset
+**          (4) test_libver_bounds_dataspace(fapl): dataspace message versions
+**          (5) test_libver_bounds_datatype(fapl): datatype message versions
+**          (6) test_libver_bounds_attributes(fapl): attribute message versions
+**
+**************************************************************************************/
+static void
+test_libver_bounds_low_high(void)
+{
+    hid_t fapl = -1;        /* File access property list */
+    H5F_libver_t low, high; /* Low and high bounds */
+    herr_t ret;             /* The return value */
+
+    /* Output message about test being performed */
+    MESSAGE(5, ("Testing setting (low, high) format version bounds\n"));
+
+    /* Create a file access property list */
+    fapl = H5Pcreate(H5P_FILE_ACCESS);
+    CHECK(fapl, FAIL, "H5Pcreate");
+
+    /* Loop through all the combinations of low/high version bounds */
+    for(low = H5F_LIBVER_EARLIEST; low < H5F_LIBVER_NBOUNDS; low++)
+        for(high = H5F_LIBVER_EARLIEST; high < H5F_LIBVER_NBOUNDS; high++) {
+              
+            H5E_BEGIN_TRY {
+                /* Set the low/high version bounds */
+                ret = H5Pset_libver_bounds(fapl, low, high);
+            } H5E_END_TRY;
+
+            /* Should fail: invalid combinations */
+            if(high == H5F_LIBVER_EARLIEST) {
+                VERIFY(ret, FAIL, "H5Pset_libver_bounds");
+                continue;
+            }
+
+            /* Should fail: invalid combinations */
+            if(high < low) {
+                VERIFY(ret, FAIL, "H5Pset_libver_bounds");
+                continue;
+            }
+
+            /* All other combinations are valid and should succeed */
+            VERIFY(ret, SUCCEED, "H5Pset_libver_bounds");
+
+            /* Tests to verify version bounds */
+            test_libver_bounds_super(fapl);
+            test_libver_bounds_obj(fapl);
+            test_libver_bounds_dataset(fapl);
+            test_libver_bounds_dataspace(fapl);
+            test_libver_bounds_datatype(fapl);
+            test_libver_bounds_attributes(fapl);
+        }
+
+    ret = H5Pclose(fapl);
+    CHECK(ret, FAIL, "H5Pclose");
+
+} /* end test_libver_bounds_low_high() */
+
+
+/***********************************************************************
+**
+**  test_libver_bounds_super():
+**      Verify superblock version with the following two tests:
+**		    (1) test_libver_bounds_super_create():
+**              --when creating a file with the input fapl and the fcpl 
+**                that has the following feature enabled:
+**                (A) default fcpl
+**                (B) fcpl with v1-btee K value enabled
+**                (C) fcpl with shared messages enabled
+**                (D) fcpl with persistent free-space manager enabled
+**
+**		    (2) test_libver_bounds_super_open():
+**              --when opening a file which is created with the input fapl
+**                and the fcpl setting as #A to #D above.
+**
+**     These two tests are run with or without SWMR file access.
+**
+*************************************************************************/
+static void
+test_libver_bounds_super(hid_t fapl)
+{
+    hid_t fcpl = -1;    /* File creation property list */
+    herr_t ret;         /* The return value */
+
+    /* Create a default fcpl: #A */
+    /* This will result in superblock version 0 */
+    fcpl = H5Pcreate(H5P_FILE_CREATE);
+    CHECK(fcpl, FAIL, "H5Pcreate");
+
+    /* Verify superblock version when creating a file with input fapl, 
+       fcpl #A and with/without SWMR access */
+    test_libver_bounds_super_create(fapl, fcpl, TRUE);
+    test_libver_bounds_super_create(fapl, fcpl, FALSE);
+
+    /* Verify superblock version when opening a file which is created
+       with input fapl, fcpl #A and with/without SWMR access */
+    test_libver_bounds_super_open(fapl, fcpl, TRUE);
+    test_libver_bounds_super_open(fapl, fcpl, FALSE);
+
+    /* Close the fcpl */
+    ret = H5Pclose(fcpl);
+    CHECK(ret, FAIL, "H5Pclose");
+
+    /* Create a fcpl with v1-btree K value enabled: #B */
+    /* This will result in superblock version 1 */
+    fcpl = H5Pcreate(H5P_FILE_CREATE);
+    CHECK(fcpl, FAIL, "H5Pcreate");
+    ret = H5Pset_istore_k(fcpl, 64);
+    CHECK(ret, FAIL, "H5Pset_istore_k");
+
+    /* Verify superblock version when creating a file with input fapl,
+       fcpl #B and with/without SWMR access */
+    test_libver_bounds_super_create(fapl, fcpl, TRUE);
+    test_libver_bounds_super_create(fapl, fcpl, FALSE);
+
+    /* Verify superblock version when opening a file which is created
+       with input fapl, fcpl #B and with/without SWMR access */
+    test_libver_bounds_super_open(fapl, fcpl, TRUE);
+    test_libver_bounds_super_open(fapl, fcpl, FALSE);
+
+    /* Close the fcpl */
+    ret = H5Pclose(fcpl);
+    CHECK(ret, FAIL, "H5Pclose");
+
+    /* Create a fcpl with shared messages enabled: #C */
+    /* This will result in superblock version 2 */
+    fcpl = H5Pcreate(H5P_FILE_CREATE);
+    CHECK(fcpl, FAIL, "H5Pcreate");
+    ret = H5Pset_shared_mesg_nindexes(fcpl, 1);
+    CHECK(ret, FAIL, "H5Pset_shared_mesg_nindexes");
+    ret = H5Pset_shared_mesg_index(fcpl, 0, H5O_SHMESG_ATTR_FLAG, 2);
+    CHECK(ret, FAIL, "H5Pset_shared_mesg_index");
+
+    /* Verify superblock version when creating a file with input fapl, 
+       fcpl #C and with/without SWMR access */
+    test_libver_bounds_super_create(fapl, fcpl, TRUE);
+    test_libver_bounds_super_create(fapl, fcpl, FALSE);
+
+    /* Verify superblock version when opening a file which is created
+       with input fapl, fcpl #C and with/without SWMR access */
+    test_libver_bounds_super_open(fapl, fcpl, TRUE);
+    test_libver_bounds_super_open(fapl, fcpl, FALSE);
+
+    /* Close the fcpl */
+    ret = H5Pclose(fcpl);
+    CHECK(ret, FAIL, "H5Pclose");
+
+    /* Create a fcpl with persistent free-space manager enabled: #D */
+    /* This will result in superblock version 2 */
+    fcpl = H5Pcreate(H5P_FILE_CREATE);
+    CHECK(fcpl, FAIL, "H5Pcreate");
+    ret = H5Pset_file_space(fcpl, H5F_FILE_SPACE_ALL_PERSIST, (hsize_t)0);
+    CHECK(ret, FAIL, "H5Pset_file_space");
+
+    /* Verify superblock version when creating a file with input fapl,
+       fcpl #D and with/without SWMR access */
+    test_libver_bounds_super_create(fapl, fcpl, TRUE);
+    test_libver_bounds_super_create(fapl, fcpl, FALSE);
+
+    /* Verify superblock version when opening a file which is created
+       with input fapl, fcpl #D and with/without SWMR access */
+    test_libver_bounds_super_open(fapl, fcpl, TRUE);
+    test_libver_bounds_super_open(fapl, fcpl, FALSE);
+
+    /* Close the fcpl */
+    ret = H5Pclose(fcpl);
+    CHECK(ret, FAIL, "H5Pclose");
+
+} /* end test_libver_bounds_super() */
+
+
+/**************************************************************************************************
+**
+**  test_libver_bounds_super_create():
+**      Verify the following when the file is created with the input fapl, fcpl, and
+**      with/without SWMR access:
+**          (a) the superblock version #
+**          (b) the file's low bound setting
+**          (c) fail or succeed in creating the file
+**
+**      For file creation, the bounds setting in fapl, the feature enabled in fcpl,
+**      and with/without SWMR file access will determine the results for #a to #c.
+**
+**      The first row for the following two tables is the 5 pairs of low/high bounds setting
+**      in the input fapl. The next three rows list the expected results for #a to #c.
+**      "-->" indicates "upgrade to"
+**
+**                                          Creating a file with write access
+**                    --------------------------------------------------------------------------------
+**                    | (earliest, v18) | (earliest, v110) | (v18, v18) | (v18, v110) | (v110, v110) |
+**                    |______________________________________________________________________________|
+** Superblock version | vers 0, 1, 2    | vers 0, 1, 2     | vers 2     | vers 2      | vers 3       |
+**                    |------------------------------------------------------------------------------|
+** File's low bound   |                            no change                                         |
+**                    |------------------------------------------------------------------------------|
+** File creation      |                             succeed                                          |
+**                    |______________________________________________________________________________|
+**
+**                                          Creating a file with SWMR-write access
+**                    --------------------------------------------------------------------------------
+**                    | (earliest, v18) | (earliest, v110) | (v18, v18) | (v18, v110) | (v110, v110) |
+**                    |______________________________________________________________________________|
+** Superblock version | --              | vers 3           | --         | vers  3     | vers 3       |
+**                    |------------------------------------------------------------------------------|
+** File's low bound   | --              | ->v110           | --         | ->v110      | no change    |
+**                    |------------------------------------------------------------------------------|
+** File creation      | fail            | succeed          | fail       | succeed     | succed       |
+**                    |______________________________________________________________________________|
+**
+******************************************************************************************************/
+static void
+test_libver_bounds_super_create(hid_t fapl, hid_t fcpl, htri_t is_swmr)
+{
+    hid_t fid = -1;			/* File ID */
+    H5F_t *f = NULL;	    /* Internal file pointer */
+    H5F_libver_t low, high; /* Low and high bounds */
+    hbool_t ok;			    /* The result is ok or not */
+    herr_t ret;			    /* The return value */
+
+    /* Try to create the file */
+    H5E_BEGIN_TRY {
+        fid = H5Fcreate(FILE8, H5F_ACC_TRUNC | (is_swmr ? H5F_ACC_SWMR_WRITE : 0), fcpl, fapl);
+    } H5E_END_TRY;
+
+    /* Get the internal file pointer if the create succeeds */
+    if((ok = fid >= 0)) {
+        f = (H5F_t *)H5I_object(fid);
+        CHECK(f, NULL, "H5I_object");
+    }
+
+    /* Retrieve the low/high bounds */
+    ret = H5Pget_libver_bounds(fapl, &low, &high);
+    CHECK(ret, FAIL, "H5Pget_libver_bounds");
+
+    if(is_swmr) { /* SWMR is enabled */
+
+        if(high == H5F_LIBVER_LATEST) { /* Should succeed */
+            VERIFY(ok, TRUE, "H5Fcreate");
+            VERIFY(HDF5_SUPERBLOCK_VERSION_3, f->shared->sblock->super_vers, "HDF5_superblock_ver_bounds");
+            VERIFY(H5F_LIBVER_V110, f->shared->low_bound, "HDF5_superblock_ver_bounds");
+
+        } else /* Should fail */
+            VERIFY(ok, FALSE, "H5Fcreate");
+
+    } else { /* Should succeed */
+        VERIFY(ok, TRUE, "H5Fcreate");
+        VERIFY(low, f->shared->low_bound, "HDF5_superblock_ver_bounds");
+
+        switch(low) {
+            case H5F_LIBVER_EARLIEST:
+                ok = (f->shared->sblock->super_vers == 0 ||
+                      f->shared->sblock->super_vers == 1 ||
+                      f->shared->sblock->super_vers == 2);
+                VERIFY(ok, TRUE, "HDF5_superblock_ver_bounds");
+                break;
+
+            case H5F_LIBVER_V18:
+                ok = (f->shared->sblock->super_vers == 2);
+                VERIFY(ok, TRUE, "HDF5_superblock_ver_bounds");
+                break;
+
+            case H5F_LIBVER_V110:
+                ok = (f->shared->sblock->super_vers == 3);
+                VERIFY(ok, TRUE, "HDF5_superblock_ver_bounds");
+                break;
+
+            case H5F_LIBVER_ERROR:
+            case H5F_LIBVER_NBOUNDS:
+            default:
+               ERROR("H5Pget_libver_bounds");
+
+        } /* end switch */
+    }
+
+    if(ok) { /* Close the file */
+        ret = H5Fclose(fid);
+        CHECK(ret, FAIL, "H5Fclose");
+    }
+
+} /* end test_libver_bounds_super_create() */
+
+/**************************************************************************************************
+**
+**  test_libver_bounds_super_open():
+**      Verify the following when opening a file which is created with the input fapl, fcpl,
+**      and with/without SWMR access:
+**          (a) the file's low bound setting
+**          (b) fail or succeed in opening the file
+**
+**      (1) Create a file with the input fapl, fcpl and with/without SWMR access
+**      (2) Close the file
+**      (3) Reopen the file with a new fapl that is set to the 5 pairs of low/high bounds
+**          in a for loop. For each pair of setting in the new fapl:
+**          --Verify the expected results for #a and #b above.
+**          --Close the file.
+**
+**      For file open, the file's superblock version, the low/high bounds setting in fapl,
+**      and with/without SWMR file access will determine the results for #a and #b.
+**
+**      The first row for the following tables is the 5 pairs of low/high bounds setting
+**      in the input fapl. The next two rows list the expected results for #a and #b.
+**      "-->" indicates "upgrade to"
+**
+**                                        Opening a file with write access
+**
+**                                              Superblock version 0, 1
+**                  --------------------------------------------------------------------------------
+**                  | (earliest, v18) | (earliest, v110) | (v18, v18) | (v18, v110) | (v110, v110) |
+**                  |______________________________________________________________________________|
+** File's low bound |                               no change                                      |
+**                  |------------------------------------------------------------------------------|
+** File open        |                               succeed                                        |
+**                  |______________________________________________________________________________|
+**
+**
+**                                              Superblock version 2
+**                  --------------------------------------------------------------------------------
+**                  | (earliest, v18) | (earliest, v110) | (v18, v18) | (v18, v110) | (v110, v110) |
+**                  |______________________________________________________________________________|
+** File's low bound |               -->v18               |               no change                 |
+**                  |------------------------------------------------------------------------------|
+** File open        |                               succeed                                        |
+**                  |______________________________________________________________________________|
+**
+**                                              Superblock version 3
+**                  --------------------------------------------------------------------------------
+**                  | (earliest, v18) | (earliest, v110) | (v18, v18) | (v18, v110) | (v110, v110) |
+**                  |______________________________________________________________________________|
+** File's low bound | --              | -->v110          | --         | -->v110     | no change    |
+**                  |------------------------------------------------------------------------------|
+** File open        | fail            | succeed          | fail       | succeed     | succeed      |
+**                  |______________________________________________________________________________|
+**
+**
+**
+**                                        Opening a file with SWMR-write access
+**
+**                                              Superblock version 0, 1, 2
+**                  -------------------------------------------------------------------------------
+**                  | (earliest, v18) | (earliest, v10) | (v18, v18) | (v18, v110) | (v110, v110) |
+**                  |_____________________________________________________________________________|
+** File's low bound |                                   ----
+**                  |-----------------------------------------------------------------------------|
+** File open        |                                   fail
+**                  |_____________________________________________________________________________|
+**
+**
+**                                              Superblock version 3
+**                  -------------------------------------------------------------------------------
+**                  | (earliest, v18) | (earliest, v10) | (v18, v18) | (v18, v110) | (v110, v110) |
+**                  |_____________________________________________________________________________|
+** File's low bound | --              | -->v110         | --         | -->v110     | no change    |
+**                  |-----------------------------------------------------------------------------|
+** File open        | fail            | succeed         | fail       | succeed     | succeed      |
+**                  |_____________________________________________________________________________|
+**
+**
+******************************************************************************************************/
+static void
+test_libver_bounds_super_open(hid_t fapl, hid_t fcpl, htri_t is_swmr)
+{
+    hid_t fid = -1;			/* File ID */
+    H5F_t *f = NULL;	    /* Internal file pointer */
+    hid_t new_fapl = -1;    /* File access property list */
+    unsigned super_vers;	/* Superblock version */
+    H5F_libver_t low, high; /* Low and high bounds */
+    hbool_t ok;			    /* The result is ok or not */
+    herr_t ret;			    /* Return value */
+
+    /* Create the file with the input fcpl and fapl */
+    fid = H5Fcreate(FILE8, H5F_ACC_TRUNC, fcpl, fapl);
+    CHECK(fid, FAIL, "H5Fcreate");
+
+    /* Get the internal file pointer */
+    f = (H5F_t *)H5I_object(fid);
+    CHECK(f, NULL, "H5I_object");
+
+    /* The file's superblock version */
+    super_vers = f->shared->sblock->super_vers;
+
+    /* Close the file */
+    ret = H5Fclose(fid);
+    CHECK(ret, FAIL, "H5Fclose");
+
+    /* Create a default file access property list */
+    new_fapl = H5Pcreate(H5P_FILE_ACCESS);
+    CHECK(new_fapl, FAIL, "H5Pcreate");
+
+    /* Loop through all the combinations of low/high bounds in new_fapl */
+    for(low = H5F_LIBVER_EARLIEST; low < H5F_LIBVER_NBOUNDS; low++) {
+        for(high = H5F_LIBVER_EARLIEST; high < H5F_LIBVER_NBOUNDS; high++) {
+            H5E_BEGIN_TRY {
+                ret = H5Pset_libver_bounds(new_fapl, low, high);
+            } H5E_END_TRY;
+
+            /* Invalid combinations */
+            if (ret < 0)
+                continue;
+
+            /* Open the file with or without SWMR access */
+            H5E_BEGIN_TRY {
+                fid = H5Fopen(FILE8, H5F_ACC_RDWR | (is_swmr ? H5F_ACC_SWMR_WRITE : 0), new_fapl);
+            } H5E_END_TRY;
+            ok = fid >= 0;
+
+            /* Verify the file open succeeds or fails */
+            switch(super_vers) {
+                case 3:
+                    if(high == H5F_LIBVER_LATEST) {
+                        /* Should succeed */
+                        VERIFY(ok, TRUE, "H5Fopen");
+                        VERIFY(H5F_LIBVER_V110, f->shared->low_bound, "HDF5_superblock_ver_bounds");
+
+                        /* Close the file */
+                        ret = H5Fclose(fid);
+                        CHECK(ret, FAIL, "H5Fclose");
+                    } else /* Should fail */
+                        VERIFY(ok, FALSE, "H5Fopen");
+                    break;
+
+                case 2:
+                    if(is_swmr)  /* Should fail */
+                        VERIFY(ok, FALSE, "H5Fopen");
+                    else { /* Should succeed */
+                        VERIFY(ok, TRUE, "H5Fopen");
+
+                        ok = f->shared->low_bound >= H5F_LIBVER_V18;
+                        VERIFY(ok, TRUE, "HDF5_superblock_ver_bounds");
+
+                        /* Close the file */
+                        ret = H5Fclose(fid);
+                        CHECK(ret, FAIL, "H5Fclose");
+                    }
+                    break;
+
+                case 1:
+                case 0:
+                    if(is_swmr)  /* Should fail */
+                        VERIFY(ok, FALSE, "H5Fopen");
+                    else { /* Should succeed */
+                        VERIFY(ok, TRUE, "H5Fopen");
+                        VERIFY(low, f->shared->low_bound, "HDF5_superblock_ver_bounds");
+
+                        ret = H5Fclose(fid);
+                        CHECK(ret, FAIL, "H5Fclose");
+                    }
+                    break;
+
+                default:
+                    break;
+            } /* end switch */
+        } /* end for */
+    } /* end for */
+
+    /* Close the file access property list */
+    ret = H5Pclose(new_fapl);
+    CHECK(ret, FAIL, "H5Pclose");
+
+} /* end test_libver_bounds_super_open() */
+
+/****************************************************************
+**
+**  test_libver_bounds_obj():
+**      Verify object header versions:
+**
+**      (a) Create a file with:
+**          --the input fapl
+**          --a fcpl that has shared message enabled
+**          Verify the root group's object header version.
+**          Close the file.
+**
+**      (b) Create another file with:
+**          --the input fapl
+**          --a default fcpl
+**          Verify the root group's object header version.
+**          Close the file.
+**
+**      (c) Reopen the same file in (b) with a new fapl.
+**          The new fapl is set to the 5 pairs of low/high 
+**          bounds in a "for" loop.  For each setting in fapl:
+**          --Create a group in the file
+**          --Verify the group's object header version
+**          --Close and delete the group
+**          --Close the file
+**
+****************************************************************/
+static void
+test_libver_bounds_obj(hid_t fapl)
+{
+    hid_t fid = -1;         /* File ID */
+    hid_t gid = -1;         /* Group ID */
+    hid_t fcpl = -1;        /* File creation property list */
+    hid_t new_fapl = -1;    /* File access property list */
+    H5F_t *f = NULL;        /* Internal file pointer */
+    H5F_libver_t low, high; /* Low and high bounds */
+    H5O_info_t  oinfo;      /* Object info */
+    H5G_info_t ginfo;       /* Group info */
+    herr_t ret;             /* Return value */
+
+    /* Retrieve the low/high bounds from the input fapl */
+    ret = H5Pget_libver_bounds(fapl, &low, &high);
+    CHECK(ret, FAIL, "H5Pget_libver_bounds");
+
+    /* Create a default file creation property list */
+    fcpl = H5Pcreate(H5P_FILE_CREATE);
+    CHECK(fcpl, FAIL, "H5Pcreate");
+
+    /* Enable shared message in the fcpl */
+    /* This will result in a version 2 object header */
+    ret = H5Pset_shared_mesg_nindexes(fcpl, 1);
+    CHECK(ret, FAIL, "H5Pset_shared_mesg_nindexes");
+    ret = H5Pset_shared_mesg_index(fcpl, 0, H5O_SHMESG_ATTR_FLAG, 2);
+    CHECK(ret, FAIL, "H5Pset_shared_mesg_index");
+
+    /* Create the file with the fcpl and the input fapl */
+    fid = H5Fcreate(FILE8, H5F_ACC_TRUNC, fcpl, fapl);
+    CHECK(fid, FAIL, "H5Fcreate");
+
+    /* Get root group's object info */
+    ret = H5Oget_info_by_name(fid, "/", &oinfo, H5P_DEFAULT);
+    CHECK(ret, FAIL, "H5Oget_info_by_name");
+
+    /* Verify object header version is 2 because shared message is enabled */
+    VERIFY(oinfo.hdr.version, H5O_VERSION_2, "H5O_obj_ver_bounds");
+
+    /* Close the file */
+    ret = H5Fclose(fid);
+    CHECK(ret, FAIL, "H5Fclose");
+
+    /* Close the file creation property list */
+    ret = H5Pclose(fcpl);
+    CHECK(ret, FAIL, "H5Pclose");
+
+    /* Create a file with the default fcpl and input fapl */
+    fid = H5Fcreate(FILE8, H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
+    CHECK(fid, FAIL, "H5Fcreate");
+
+    /* Get root group's object info */
+    ret = H5Oget_info_by_name(fid, "/", &oinfo, H5P_DEFAULT);
+    CHECK(ret, FAIL, "H5Oget_info_by_name");
+
+    /* Verify object header version is as indicated by low_bound */
+    VERIFY(oinfo.hdr.version, H5O_obj_ver_bounds[low], "H5O_obj_ver_bounds");
+
+    /* Close the file */
+    ret = H5Fclose(fid);
+    CHECK(ret, FAIL, "H5Fclose");
+
+    /* Create a new default file access property list which
+       is used to open the file in the "for" loop */
+    new_fapl = H5Pcreate(H5P_FILE_ACCESS);
+    CHECK(new_fapl, FAIL, "H5Pcreate");
+
+    /* Loop through all the combinations of low/high bounds in new_fapl */
+    /* Open the file with the fapl; create a group and verify the 
+       object header version, then delete the group and close the file.*/
+    for(low = H5F_LIBVER_EARLIEST; low < H5F_LIBVER_NBOUNDS; low++) {
+        for(high = H5F_LIBVER_EARLIEST; high < H5F_LIBVER_NBOUNDS; high++) {
+            H5E_BEGIN_TRY {
+                ret = H5Pset_libver_bounds(new_fapl, low, high);
+            } H5E_END_TRY;
+
+            if (ret < 0) /* Invalid combinations */
+                continue;
+
+            /* Open the file */
+            H5E_BEGIN_TRY {
+                fid = H5Fopen(FILE8, H5F_ACC_RDWR, new_fapl);
+            } H5E_END_TRY;
+
+            if(fid >=0 ) { /* The file open succeeds */
+
+                /* Get the internal file pointer */
+                f = (H5F_t *)H5I_object(fid);
+                CHECK(f, NULL, "H5I_object");
+
+                /* Create a group in the file */
+                gid = H5Gcreate2(fid, GRP_NAME, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+                CHECK(gid, FAIL, "H5Gcreate2");
+
+                /* Get group information */
+                ret = H5Gget_info(gid, &ginfo);
+                CHECK(ret, FAIL, "H5Gget_info");
+
+                /* Verify group storage type */
+                if(f->shared->low_bound >= H5F_LIBVER_V18)
+                    /* Links in group are stored in object header */
+                    VERIFY(ginfo.storage_type, H5G_STORAGE_TYPE_COMPACT, "H5Gget_info");
+                else
+                    /* Links in group are stored with a "symbol table" */
+                    VERIFY(ginfo.storage_type, H5G_STORAGE_TYPE_SYMBOL_TABLE, "H5Gget_info");
+
+                /* Get object header information */
+                ret = H5Oget_info_by_name(gid, GRP_NAME, &oinfo, H5P_DEFAULT);
+                CHECK(ret, FAIL, "H5Oget_info_by_name");
+
+                /* Verify object header version as indicated by low_bound */
+                VERIFY(oinfo.hdr.version, H5O_obj_ver_bounds[f->shared->low_bound], "H5O_obj_ver_bounds");
+
+                /* Close the group */
+                ret = H5Gclose(gid);
+                CHECK(ret, FAIL, "H5Gclose");
+
+                /* Delete the group */
+                ret = H5Ldelete(fid, GRP_NAME, H5P_DEFAULT);
+                CHECK(ret, FAIL, "H5Ldelete");
+
+                /* Close the file */
+                ret = H5Fclose(fid);
+                CHECK(ret, FAIL, "H5Fclose");
+
+            } /* end if */
+        } /* end for */
+    } /* end for */
+
+    /* Close the file access property list */
+    ret = H5Pclose(new_fapl);
+    CHECK(ret, FAIL, "H5Pclose");
+
+} /* end test_libver_bounds_obj() */
+
+/****************************************************************
+**
+**  test_libver_bounds_dataset():
+**      Verify message versions associated with datasets:
+**
+**      (a) Create a file with default fcpl and the input fapl.
+**          Create the following two datasets:
+**              --A contiguous dataset
+**              --A chunked dataset with "no filter edge chunks"
+**          For both datasets, verify the versions for the layout, 
+**          fill value and filter pipeline messages.
+**          Close the file.
+**
+**      (b) Create a new fapl that is set to the 5 pairs of low/high 
+**          bounds in a "for" loop.  For each pair of setting in the 
+**          new fapl: 
+**              --Open the same file in (a) with the fapl
+**              --Create a chunked dataset with 2 unlimited
+**                dimensions
+**              --Verify the versions for the layout, fill value
+**                and filter pipeline messages
+**              --Close and delete the dataset
+**              --Close the file
+**
+****************************************************************/
+static void
+test_libver_bounds_dataset(hid_t fapl)
+{
+    hid_t fid = -1;         /* File ID */
+    hid_t new_fapl = -1;    /* File access property list */
+    hid_t did = -1;         /* Dataset ID */
+    hid_t sid = -1;         /* Dataspace ID */
+    hid_t dcpl = -1;        /* Dataset creation property list */
+    H5D_t *dset = NULL;     /* Internal dataset pointer */
+    H5F_t *f = NULL;        /* Internal file pointer */
+    H5F_libver_t low, high;             /* Low and high bounds */
+    herr_t ret;                         /* Return value */
+    hsize_t fix_dims2[2] = {10, 4};     /* Dimension sizes */
+    hsize_t fix_chunks2[2] = {4, 3};    /* Chunk dimension sizes */
+    hsize_t dims2[2] = {1, 4};          /* Dimension sizes */
+    hsize_t max_dims2[2] = {H5S_UNLIMITED, H5S_UNLIMITED};  /* Maximum dimension sizes */
+    hsize_t chunks2[2] = {4, 5};        /* Chunk dimension sizes */
+
+    /* Retrieve the low/high bounds from the input fapl */
+    ret = H5Pget_libver_bounds(fapl, &low, &high);
+    CHECK(ret, FAIL, "H5Pget_libver_bounds");
+
+    /* Create the file with the input fapl */
+    fid = H5Fcreate(FILE8, H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
+    CHECK(fid, FAIL, "H5Fcreate");
+
+    /* Create the dataspace */
+    sid = H5Screate(H5S_SCALAR);
+    CHECK(sid, FAIL, "H5Screate");
+
+    /* Create a contiguous dataset */
+    did = H5Dcreate2(fid, DSETA, H5T_NATIVE_INT, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+    CHECK(did, FAIL, "H5Dcreate");
+
+    /* Get the internal dataset pointer */
+    dset = (H5D_t *)H5I_object(did);
+    CHECK(dset, NULL, "H5I_object");
+
+    /* Verify version for layout and fill value messages */
+    if(low == H5F_LIBVER_EARLIEST) {
+        /* For layout message: the earliest version the library will set is 3 */
+        /* For fill value message: the earliest version the library will set is 2 */ 
+        VERIFY(dset->shared->layout.version, H5O_LAYOUT_VERSION_DEFAULT, "H5O_layout_ver_bounds");
+        VERIFY(dset->shared->dcpl_cache.fill.version, H5O_FILL_VERSION_2, "H5O_fill_ver_bounds");
+    } else {
+        VERIFY(dset->shared->layout.version, H5O_layout_ver_bounds[low], "H5O_layout_ver_bounds");
+        VERIFY(dset->shared->dcpl_cache.fill.version, H5O_fill_ver_bounds[low], "H5O_fill_ver_bounds");
+    }
+
+    /* Verify filter pipleline message version */
+    VERIFY(dset->shared->dcpl_cache.pline.version, H5O_pline_ver_bounds[low], "H5O_pline_ver_bounds");
+
+    /* Close the dataset */
+    ret = H5Dclose(did);
+    CHECK(ret, FAIL, "H5Dclose");
+
+    /* Close the dataspace */
+    ret = H5Sclose(sid);
+    CHECK(ret, FAIL, "H5Sclose");
+
+    /* Set up dataspace and dcpl for creating a chunked dataset
+       with "no filter edge chunks" enabled.  
+       This will result in a version 4 layout message */
+    sid = H5Screate_simple(2, fix_dims2, NULL);
+    CHECK(sid, FAIL, "H5Screate_simple");
+    dcpl = H5Pcreate(H5P_DATASET_CREATE);
+    CHECK(dcpl, FAIL, "H5Pcreate");
+    ret = H5Pset_chunk(dcpl, 2, fix_chunks2);
+    CHECK(ret, FAIL, "H5Pset_chunk");
+    ret = H5Pset_chunk_opts(dcpl, H5D_CHUNK_DONT_FILTER_PARTIAL_CHUNKS);
+    CHECK(ret, FAIL, "H5Pset_chunk_opts");
+
+    /* Create the chunked dataset */
+    H5E_BEGIN_TRY {
+        did = H5Dcreate2(fid, DSETB, H5T_NATIVE_INT, sid, H5P_DEFAULT, dcpl, H5P_DEFAULT);
+    } H5E_END_TRY;
+
+    if(did >= 0) {
+
+        /* Get the internal dataset pointer */
+        dset = (H5D_t *)H5I_object(did);
+        CHECK(dset, NULL, "H5I_object");
+
+        /* Verify layout message version and chunk indexing type */
+        VERIFY(dset->shared->layout.version, H5O_LAYOUT_VERSION_4, "H5O_layout_ver_bounds");
+        VERIFY(dset->shared->layout.u.chunk.idx_type, H5D_CHUNK_IDX_FARRAY, "chunk_index_type");
+
+        /* Close the dataset */
+        ret = H5Dclose(did);
+        CHECK(ret, FAIL, "H5Dclose");
+    }
+
+    /* Close the file */
+    ret = H5Fclose(fid);
+    CHECK(ret, FAIL, "H5Fclose");
+
+    /* Close the dataspace */
+    ret = H5Sclose(sid);
+    CHECK(ret, FAIL, "H5Sclose");
+
+    /* Close the datset creation property list */
+    ret = H5Pclose(dcpl);
+    CHECK(ret, FAIL, "H5Pclose");
+
+    /* Create a default file access property list which is used 
+       to open the file in the 'for' loop */
+    new_fapl = H5Pcreate(H5P_FILE_ACCESS);
+    CHECK(new_fapl, FAIL, "H5Pcreate");
+
+    /* Set up dataspace and dcpl for creating a chunked dataset with 
+       2 unlimited dimensions in the 'for' loop */
+    sid = H5Screate_simple(2, dims2, max_dims2);
+    CHECK(sid, FAIL, "H5Screate_simple");
+    dcpl = H5Pcreate(H5P_DATASET_CREATE);
+    CHECK(dcpl, FAIL, "H5Pcreate");
+    ret = H5Pset_chunk(dcpl, 2, chunks2);
+    CHECK(ret, FAIL, "H5Pset_chunk");
+
+    /* Loop through all the combinations of low/high bounds in new_fapl */
+    /* Open the file with the fapl and create the chunked dataset */
+    /* Verify the dataset's layout, fill value and filter pipleline message versions */
+    for(low = H5F_LIBVER_EARLIEST; low < H5F_LIBVER_NBOUNDS; low++) {
+        for(high = H5F_LIBVER_EARLIEST; high < H5F_LIBVER_NBOUNDS; high++) {
+            H5E_BEGIN_TRY {
+                ret = H5Pset_libver_bounds(new_fapl, low, high);
+            } H5E_END_TRY;
+
+            if (ret < 0) /* Invalid low/high combinations */
+                continue;
+
+            /* Open the file */
+            H5E_BEGIN_TRY {
+                fid = H5Fopen(FILE8, H5F_ACC_RDWR, new_fapl);
+            } H5E_END_TRY;
+
+            if(fid >=0 ) { /* The file open succeeds */
+
+                /* Get the internal file pointer */
+                f = (H5F_t *)H5I_object(fid);
+                CHECK(f, NULL, "H5I_object");
+
+                /* Create the chunked dataset */
+                did = H5Dcreate2(fid, DSETC, H5T_NATIVE_INT, sid, H5P_DEFAULT, dcpl, H5P_DEFAULT);
+                CHECK(did, FAIL, "H5Dcreate2");
+
+                /* Get the internal file pointer */
+                dset = (H5D_t *)H5I_object(did);
+                CHECK(dset, NULL, "H5I_object");
+
+                /* Verify the dataset's layout, fill value and filter pipeline message versions */
+                /* Also verify the chunk indexing type */
+                if(f->shared->low_bound == H5F_LIBVER_EARLIEST) {
+                    /* For layout message: the earliest version the library will set is 3 */
+                    /* For fill value message: the earliest version the library will set is 2 */ 
+                    VERIFY(dset->shared->layout.version, H5O_LAYOUT_VERSION_DEFAULT, "H5O_layout_ver_bounds");
+                    VERIFY(dset->shared->dcpl_cache.fill.version, H5O_FILL_VERSION_2, "H5O_fill_ver_bounds");
+                } else {
+                    VERIFY(dset->shared->layout.version, H5O_layout_ver_bounds[f->shared->low_bound], "H5O_layout_ver_bounds");
+                    VERIFY(dset->shared->dcpl_cache.fill.version, H5O_fill_ver_bounds[f->shared->low_bound], "H5O_fill_ver_bounds");
+                }
+
+                /* Verify the filter pipeline message version */
+                VERIFY(dset->shared->dcpl_cache.pline.version, H5O_pline_ver_bounds[f->shared->low_bound], "H5O_pline_ver_bounds");
+
+                /* Verify the dataset's chunk indexing type */
+                if(dset->shared->layout.version == H5O_LAYOUT_VERSION_LATEST)
+                    VERIFY(dset->shared->layout.u.chunk.idx_type, H5D_CHUNK_IDX_BT2, "chunk_index_type");
+                else
+                    VERIFY(dset->shared->layout.u.chunk.idx_type, H5D_CHUNK_IDX_BTREE, "chunk_index_type");
+
+                /* Close the dataset */
+                ret = H5Dclose(did);
+                CHECK(ret, FAIL, "H5Dclose");
+
+                /* Delete the dataset */
+                ret = H5Ldelete(fid, DSETC, H5P_DEFAULT);
+                CHECK(ret, FAIL, "H5Ldelete");
+
+                /* Close the file */
+                ret = H5Fclose(fid);
+                CHECK(ret, FAIL, "H5Fclose");
+
+            } /* end if */
+        } /* end for */
+    } /* end for */
+
+    /* Close the file access property list */
+    ret = H5Pclose(new_fapl);
+    CHECK(ret, FAIL, "H5Pclose");
+
+    /* Close the dataspace */
+    ret = H5Sclose(sid);
+    CHECK(ret, FAIL, "H5Sclose");
+
+    /* Close the dataset creation property list */
+    ret = H5Pclose(dcpl);
+    CHECK(ret, FAIL, "H5Pclose");
+
+} /* end test_libver_bounds_dataset() */
+
+/****************************************************************
+**
+**  test_libver_bounds_dataspace():
+**      Verify dataspace message versions:
+**
+**      (a) Create a file with default fcpl and the input fapl.
+**          Create the following two datasets:
+**              --A dataset with scalar dataspace
+**              --A dataset with null dataspace
+**          For both datasets, verify the dataspace message versions.
+**          Close the file.
+**
+**      (b) Create a new fapl that is set to the 5 pairs of low/high
+**          bounds in a "for" loop.  For each pair of setting in the 
+**          new fapl:
+**              --Open the same file in (a) with the fapl
+**              --Create a chunked dataset, a compact dataset and
+**                a contigous dataset
+**              --Verify the dataspace message version for these
+**                three datasets
+**              --Delete the three datasets and the dataspaces
+**              --Close the file
+**
+****************************************************************/
+static void
+test_libver_bounds_dataspace(hid_t fapl)
+{
+    hid_t fid = -1;                             /* File ID */
+    hid_t new_fapl = -1;                        /* File access property list */
+    hid_t did = -1, did_null = -1;              /* Dataset IDs */
+    hid_t did_compact = -1, did_contig = -1;    /* Dataset IDs */
+    hid_t sid = -1, sid_null = -1;              /* Dataspace IDs */
+    hid_t sid_compact = -1, sid_contig = -1;    /* Dataspace IDs */
+    hid_t dcpl = -1;                            /* Dataset creation property list */
+    hid_t dcpl_compact = -1, dcpl_contig = -1;  /* Dataset creation property lists */
+    H5S_t *space = NULL, *space_null = NULL;    /* Internal dataspace pointers */
+    H5F_t *f = NULL;                            /* Internal file pointer */
+    H5F_libver_t low, high;                     /* Low and high bounds */
+    hsize_t dims[1] = {1};                      /* Dimension sizes */
+    hsize_t dims2[2] = {5, 4};                  /* Dimension sizes */
+    hsize_t max_dims[1] = {H5S_UNLIMITED};      /* Maximum dimension sizes */
+    hsize_t chunks[1] = {4};                    /* Chunk dimension sizes */
+    herr_t ret;                                 /* Return value */
+
+    /* Retrieve the low/high bounds from the input fapl */
+    ret = H5Pget_libver_bounds(fapl, &low, &high);
+    CHECK(ret, FAIL, "H5Pget_libver_bounds");
+
+    /* Create the file with the input fapl */
+    fid = H5Fcreate(FILE8, H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
+    CHECK(fid, FAIL, "H5Fcreate");
+
+    /* Create scalar dataspace */
+    sid = H5Screate(H5S_SCALAR);
+    CHECK(sid, FAIL, "H5Screate");
+
+    /* Create a dataset with the scalar dataspace */
+    did = H5Dcreate2(fid, DSET, H5T_NATIVE_INT, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+    CHECK(did, FAIL, "H5Dcreate");
+
+    /* Get the internal dataspace pointer */
+    sid = H5Dget_space(did);
+    CHECK(sid, FAIL, "H5Dget_space");
+    space = (H5S_t *)H5I_object(sid);
+    CHECK(space, NULL, "H5I_object");
+
+    /* Verify the dataspace version */
+    VERIFY(space->extent.version, H5O_sdspace_ver_bounds[low], "H5O_sdspace_ver_bounds");
+
+    /* Create null dataspace */
+    sid_null = H5Screate(H5S_NULL);
+    CHECK(sid_null, FAIL, "H5Screate");
+
+    /* Create a dataset with the null dataspace */
+    did_null = H5Dcreate2(fid, DSET_NULL, H5T_NATIVE_INT, sid_null, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+    CHECK(did_null, FAIL, "H5Dcreate");
+
+    /* Get the internal dataspace pointer */
+    sid_null = H5Dget_space(did_null);
+    CHECK(sid_null, FAIL, "H5Dget_space");
+    space_null = (H5S_t *)H5I_object(sid_null);
+    CHECK(space_null, NULL, "H5I_object");
+
+    /* Verify the dataspace version */
+    VERIFY(space_null->extent.version, H5O_SDSPACE_VERSION_2, "H5O_sdspace_ver_bounds");
+
+    /* Close the datasets */
+    ret = H5Dclose(did);
+    CHECK(ret, FAIL, "H5Dclose");
+    ret = H5Dclose(did_null);
+    CHECK(ret, FAIL, "H5Dclose");
+
+    /* Close the dataspaces */
+    ret = H5Sclose(sid);
+    CHECK(ret, FAIL, "H5Sclose");
+    ret = H5Sclose(sid_null);
+    CHECK(ret, FAIL, "H5Sclose");
+
+    /* Close the file */
+    ret = H5Fclose(fid);
+    CHECK(ret, FAIL, "H5Fclose");
+
+    /* Create a default file access property list which is used
+       to open the file in the 'for' loop */
+    new_fapl = H5Pcreate(H5P_FILE_ACCESS);
+    CHECK(new_fapl, FAIL, "H5Pcreate");
+
+    /* Set up dataspace and dcpl for creating a chunked dataset */
+    sid = H5Screate_simple(1, dims, max_dims);
+    CHECK(sid, FAIL, "H5Screate_simple");
+    dcpl = H5Pcreate(H5P_DATASET_CREATE);
+    CHECK(dcpl, FAIL, "H5Pcreate");
+    ret = H5Pset_chunk(dcpl, 1, chunks);
+    CHECK(ret, FAIL, "H5Pset_chunk");
+
+    /* Set up dataspace and dcpl for creating a compact dataset */
+    sid_compact = H5Screate_simple(1, dims, NULL);
+    CHECK(sid_compact, FAIL, "H5Screate_simple");
+    dcpl_compact = H5Pcreate(H5P_DATASET_CREATE);
+    CHECK(dcpl_compact, FAIL, "H5Pcreate");
+    ret = H5Pset_layout(dcpl_compact, H5D_COMPACT);
+    CHECK(ret, FAIL, "H5Pset_layout");
+
+    /* Set up dataspace and dcpl for creating a contiguous dataset */
+    sid_contig = H5Screate_simple(2, dims2, NULL);
+    CHECK(sid_contig, FAIL, "H5Screate_simple");
+    dcpl_contig = H5Pcreate(H5P_DATASET_CREATE);
+    CHECK(dcpl_contig, FAIL, "H5Pcreate");
+    ret = H5Pset_layout(dcpl_contig, H5D_CONTIGUOUS);
+    CHECK(ret, FAIL, "H5Pset_layout");
+
+    /* Loop through all the combinations of low/high bounds in new_fapl */
+    /* Open the file and create the chunked/compact/contiguous datasets */
+    /* Verify the dataspace message version for the three datasets */
+    for(low = H5F_LIBVER_EARLIEST; low < H5F_LIBVER_NBOUNDS; low++) {
+        for(high = H5F_LIBVER_EARLIEST; high < H5F_LIBVER_NBOUNDS; high++) {
+            hid_t tmp_sid, tmp_sid_compact, tmp_sid_contig;             /* Dataspace IDs */
+            H5S_t *tmp_space, *tmp_space_compact, *tmp_space_contig;    /* Internal dataspace pointers */
+
+            H5E_BEGIN_TRY {
+                ret = H5Pset_libver_bounds(new_fapl, low, high);
+            } H5E_END_TRY;
+
+            if (ret < 0) /* Invalid low/high combinations */
+                continue;
+
+            /* Open the file */
+            H5E_BEGIN_TRY {
+                fid = H5Fopen(FILE8, H5F_ACC_RDWR, new_fapl);
+            } H5E_END_TRY;
+
+            if(fid >=0 ) { /* The file open succeeds */
+
+                /* Get the internal file pointer */
+                f = (H5F_t *)H5I_object(fid);
+                CHECK(f, NULL, "H5I_object");
+
+                /* Create the chunked dataset */
+                did = H5Dcreate2(fid, DSETA, H5T_NATIVE_INT, sid, H5P_DEFAULT, dcpl, H5P_DEFAULT);
+                CHECK(did, FAIL, "H5Dcreate2");
+
+                /* Get the internal dataspace pointer for the chunked dataset */
+                tmp_sid = H5Dget_space(did);
+                CHECK(tmp_sid, FAIL, "H5Dget_space");
+                tmp_space = (H5S_t *)H5I_object(tmp_sid);
+                CHECK(tmp_space, NULL, "H5I_object");
+
+                /* Create the compact dataset */
+                did_compact = H5Dcreate2(fid, DSETB, H5T_NATIVE_INT, sid_compact, H5P_DEFAULT, dcpl_compact, H5P_DEFAULT);
+                CHECK(did_compact, FAIL, "H5Dcreate2");
+
+                /* Get the internal dataspace pointer for the compact dataset */
+                tmp_sid_compact = H5Dget_space(did_compact);
+                CHECK(tmp_sid_compact, FAIL, "H5Dget_space");
+                tmp_space_compact = (H5S_t *)H5I_object(tmp_sid_compact);
+                CHECK(tmp_space_compact, NULL, "H5I_object");
+
+                /* Create the contiguous dataset */
+                did_contig = H5Dcreate2(fid, DSETC, H5T_NATIVE_INT, sid_contig, H5P_DEFAULT, dcpl_contig, H5P_DEFAULT);
+                CHECK(did_contig, FAIL, "H5Dcreate2");
+
+                /* Get the internal dataspace pointer for the contiguous dataset */
+                tmp_sid_contig = H5Dget_space(did_contig);
+                CHECK(tmp_sid_contig, FAIL, "H5Dget_space");
+                tmp_space_contig = (H5S_t *)H5I_object(tmp_sid_contig);
+                CHECK(tmp_space_contig, NULL, "H5I_object");
+
+                /* Verify versions for the three dataspaces */
+                VERIFY(tmp_space->extent.version, H5O_sdspace_ver_bounds[f->shared->low_bound], "H5O_sdspace_ver_bounds");
+                VERIFY(tmp_space_compact->extent.version, H5O_sdspace_ver_bounds[f->shared->low_bound], "H5O_sdspace_ver_bounds");
+                VERIFY(tmp_space_contig->extent.version, H5O_sdspace_ver_bounds[f->shared->low_bound], "H5O_sdspace_ver_bounds");
+
+                /* Close the three datasets */
+                ret = H5Dclose(did);
+                CHECK(ret, FAIL, "H5Dclose");
+                ret = H5Dclose(did_compact);
+                CHECK(ret, FAIL, "H5Dclose");
+                ret = H5Dclose(did_contig);
+                CHECK(ret, FAIL, "H5Dclose");
+
+                /* Close the three dataspaces */
+                ret = H5Sclose(tmp_sid);
+                CHECK(ret, FAIL, "H5Sclose");
+                ret = H5Sclose(tmp_sid_compact);
+                CHECK(ret, FAIL, "H5Sclose");
+                ret = H5Sclose(tmp_sid_contig);
+                CHECK(ret, FAIL, "H5Sclose");
+
+                /* Delete the three datasets */
+                ret = H5Ldelete(fid, DSETA, H5P_DEFAULT);
+                CHECK(ret, FAIL, "H5Ldelete");
+                ret = H5Ldelete(fid, DSETB, H5P_DEFAULT);
+                CHECK(ret, FAIL, "H5Ldelete");
+                ret = H5Ldelete(fid, DSETC, H5P_DEFAULT);
+                CHECK(ret, FAIL, "H5Ldelete");
+
+                /* Close the file */
+                ret = H5Fclose(fid);
+                CHECK(ret, FAIL, "H5Fclose");
+
+            } /* end if */
+        } /* end for */
+    } /* end for */
+
+    /* Close the file access property list */
+    ret = H5Pclose(new_fapl);
+    CHECK(ret, FAIL, "H5Pclose");
+
+    /* Close the three dataspaces */
+    ret = H5Sclose(sid);
+    CHECK(ret, FAIL, "H5Sclose");
+    ret = H5Sclose(sid_compact);
+    CHECK(ret, FAIL, "H5Sclose");
+    ret = H5Sclose(sid_contig);
+    CHECK(ret, FAIL, "H5Sclose");
+
+    /* Close the three dataset creation property lists */
+    ret = H5Pclose(dcpl);
+    CHECK(ret, FAIL, "H5Pclose");
+    ret = H5Pclose(dcpl_compact);
+    CHECK(ret, FAIL, "H5Pclose");
+    ret = H5Pclose(dcpl_contig);
+    CHECK(ret, FAIL, "H5Pclose");
+
+} /* end test_libver_bounds_dataspace() */
+
+
+/****************************************************************
+**
+**  test_libver_bounds_datatype():
+**      Verify the datatype message version:
+**
+**      (a) Create the following datatypes:
+**          1) integer
+**          2) enum
+**          3) array
+**          4) compound
+**          5) vlen
+**      (b) Call test_libver_bounds_datatype_check() for each
+**          datatype in (a) to verify the datatype message version.
+**
+****************************************************************/
+static void
+test_libver_bounds_datatype(hid_t fapl)
+{
+    hid_t tid = -1, tid_enum = -1, tid_array = -1;  /* Datatype IDs */
+    hid_t tid_compound = -1, tid_vlen = -1;	        /* Datatype IDs */
+    int enum_value;                                 /* Value for enum datatype */
+    typedef struct s1 { /* Data structure for compound datatype */
+        char c;
+        int  i;
+    } s1;
+    hsize_t dims[1] = {1};  /* Dimension sizes */
+    herr_t ret;             /* Return value */
+
+    /* Create integer datatype */
+    tid = H5Tcopy(H5T_NATIVE_INT);
+
+    /* Verify datatype message version */
+    test_libver_bounds_datatype_check(fapl, tid);
+
+    /* Create enum datatype */
+    tid_enum = H5Tenum_create(tid);
+    enum_value = 0;
+    H5Tenum_insert(tid_enum, "val1", &enum_value);
+    enum_value = 1;
+    H5Tenum_insert(tid_enum, "val2", &enum_value);
+
+    /* Verify datatype message version */
+    test_libver_bounds_datatype_check(fapl, tid_enum);
+
+    /* Create array datatype */
+    tid_array = H5Tarray_create2(tid, 1, dims);
+
+    /* Verify datatype message version */
+    test_libver_bounds_datatype_check(fapl, tid_array);
+
+    /* Create compound datatype */
+    tid_compound = H5Tcreate(H5T_COMPOUND, sizeof(s1));
+    H5Tinsert(tid_compound, "c", HOFFSET(s1, c), H5T_STD_U8LE);
+    H5Tinsert(tid_compound, "i", HOFFSET(s1, i), H5T_NATIVE_INT);
+
+    /* Verify datatype message version */
+    test_libver_bounds_datatype_check(fapl, tid_compound);
+
+    /* Create vlen datatype */
+    tid_vlen = H5Tvlen_create(tid);
+
+    /* Verify datatype message version */
+    test_libver_bounds_datatype_check(fapl, tid_vlen);
+
+    /* Close the datatypes */
+    ret = H5Tclose(tid);
+    CHECK(ret, FAIL, "H5Tclose");
+
+    ret = H5Tclose(tid_enum);
+    CHECK(ret, FAIL, "H5Tclose");
+
+    ret = H5Tclose(tid_array);
+    CHECK(ret, FAIL, "H5Tclose");
+
+    ret = H5Tclose(tid_compound);
+    CHECK(ret, FAIL, "H5Tclose");
+
+    ret = H5Tclose(tid_vlen);
+    CHECK(ret, FAIL, "H5Tclose");
+
+} /* end test_libver_bounds_datatype() */
+
+/****************************************************************
+**
+**  test_libver_bounds_datatype_check():
+**      Helper routine called by test_libver_bounds_datatype()
+**      to verify the datatype message version for the input tid:
+**      
+**      (a) Create a file with default fcpl and the input fapl.
+**          Create a contiguous dataset with the input tid.
+**          Verify the datatype message version.  
+**          Create a committed datatype of string to be
+**          used later.  
+**          Close the file.
+**
+**      (b) Create a new fapl that is set to the 5 pairs of low/high
+**          bounds in a "for" loop.  For each pair of setting in
+**          the new fapl:
+**              --Open the same file in (a) with the fapl
+**              --Verify the message version for the committed
+**                datatype created earlier
+**              --Create a chunked dataset with the input tid
+**              --Verify the datatype message version
+**              --Close and delete the dataset
+**              --Close the file
+**
+****************************************************************/
+static void
+test_libver_bounds_datatype_check(hid_t fapl, hid_t tid)
+{
+    hid_t fid = -1;	            /* File ID */
+    hid_t new_fapl = -1;        /* File acess property list */
+    hid_t dcpl = -1;            /* Dataset creation property list */
+    hid_t dtid = -1;            /* Datatype ID for the dataset */
+    hid_t str_tid = -1;         /* String datatype ID */
+    hid_t did = -1;	            /* Dataset ID */
+    hid_t sid = -1;	            /* Dataspace ID */
+    hsize_t dims[1] = {1};      /* Dimension sizes */
+    hsize_t dims2[2] = {5, 4};  /* Dimension sizes */
+    hsize_t max_dims2[2] = {H5S_UNLIMITED, H5S_UNLIMITED};  /* Maximum dimension sizes */
+    hsize_t chunks[2] = {2, 3}; /* Chunk dimension sizes */
+    H5T_t *dtype = NULL;        /* Internal datatype pointer */
+    H5T_t *str_dtype = NULL;    /* Internal datatype pointer for the string datatype */
+    H5F_t *f = NULL;            /* Internal file pointer */
+    H5F_libver_t low, high;     /* Low and high bounds */
+    herr_t ret;                 /* Return value */
+
+    /* Retrieve the low/high version bounds from the input fapl */ 
+    ret = H5Pget_libver_bounds(fapl, &low, &high);
+    CHECK(ret, FAIL, "H5Pget_libver_bounds");
+
+    /* Create the file with the input fapl */
+    fid = H5Fcreate(FILE8, H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
+    CHECK(fid, FAIL, "H5Fcreate");
+
+    /* Create a committed datatype of string which will be used
+       later inside the 'for' loop */
+    str_tid = H5Tcopy(H5T_C_S1);
+    CHECK(str_tid, FAIL, "H5Tcopy");
+    ret = H5Tset_size(str_tid, (size_t)10);
+    CHECK(ret, FAIL, "H5Tset_size");
+    ret = H5Tcommit2(fid, "datatype", str_tid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+    CHECK(ret, FAIL, "H5Tcommit2");
+    ret = H5Tclose(str_tid);
+    CHECK(ret, FAIL, "H5Tclose");
+
+    /* Create dataspace */
+    sid = H5Screate_simple(1, dims, NULL);
+    CHECK(sid, FAIL, "H5Screate_simple");
+
+    /* Create a dataset with the input tid */
+    did = H5Dcreate2(fid, DSET1, tid, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+    CHECK(did, FAIL, "H5Dcreate2");
+
+    /* Get the dataset's datatype */
+    dtid = H5Dget_type(did);
+    CHECK(dtid, FAIL, "H5Dget_type");
+
+    /* Get the internal datatype pointer */
+    dtype = (H5T_t *)H5I_object(dtid);
+    CHECK(dtype, NULL, "H5I_object");
+
+    /* Verify the datatype message version */
+    /* H5T_COMPOUND, H5T_ENUM, H5T_ARRAY:
+     *  --the library will set version according to low_bound 
+     *  --H5T_ARRAY: the earliest version the library will set is 2 
+     * H5T_INTEGER, H5T_FLOAT, H5T_TIME, H5T_STRING, H5T_BITFIELD, H5T_OPAQUE, H5T_REFERENCE:
+     *  --the library will only use basic version 
+     */
+
+    if(dtype->shared->type == H5T_COMPOUND || 
+       dtype->shared->type == H5T_ENUM || 
+       dtype->shared->type == H5T_ARRAY) {
+        if(dtype->shared->type == H5T_ARRAY && low == H5F_LIBVER_EARLIEST)
+            VERIFY(dtype->shared->version, H5O_DTYPE_VERSION_2, "H5O_dtype_ver_bounds");
+        else
+            VERIFY(dtype->shared->version, H5O_dtype_ver_bounds[low], "H5O_dtype_ver_bounds");
+    } else
+        VERIFY(dtype->shared->version, H5O_dtype_ver_bounds[H5F_LIBVER_EARLIEST], "H5O_dtype_ver_bounds");
+
+    /* Close the dataset */
+    ret = H5Dclose(did);
+    CHECK(ret, FAIL, "H5Dclose");
+
+    /* Close the dataspace */
+    ret = H5Sclose(sid);
+    CHECK(ret, FAIL, "H5Dclose");
+
+    /* Close the datatype */
+    ret = H5Tclose(dtid);
+    CHECK(ret, FAIL, "H5Fclose");
+
+    /* Close the file */
+    ret = H5Fclose(fid);
+    CHECK(ret, FAIL, "H5Fclose");
+
+    /* Create a default file access property list */
+    new_fapl = H5Pcreate(H5P_FILE_ACCESS);
+    CHECK(new_fapl, FAIL, "H5Pcreate");
+
+    /* Set up dataspace and dcpl for creating a chunked dataset */
+    sid = H5Screate_simple(2, dims2, max_dims2);
+    CHECK(sid, FAIL, "H5Screate_simple");
+    dcpl = H5Pcreate(H5P_DATASET_CREATE);
+    CHECK(dcpl, FAIL, "H5Pcreate");
+    ret = H5Pset_chunk(dcpl, 2, chunks);
+    CHECK(ret, FAIL, "H5Pset_chunk");
+
+    /* Loop through all the combinations of low/high bounds */
+    /* Open the file and create the chunked dataset with the input tid */
+    /* Verify the dataset's datatype message version */
+    /* Also verify the committed atatype message version */
+    for(low = H5F_LIBVER_EARLIEST; low < H5F_LIBVER_NBOUNDS; low++) {
+        for(high = H5F_LIBVER_EARLIEST; high < H5F_LIBVER_NBOUNDS; high++) {
+            H5E_BEGIN_TRY {
+                ret = H5Pset_libver_bounds(new_fapl, low, high);
+            } H5E_END_TRY;
+
+            if (ret < 0) /* Invalid low/high combinations */
+                continue;
+
+            /* Open the file */
+            H5E_BEGIN_TRY {
+                fid = H5Fopen(FILE8, H5F_ACC_RDWR, new_fapl);
+            } H5E_END_TRY;
+
+            if(fid >= 0 ) {  /* The file open succeeds */
+
+                /* Get the internal file pointer */
+                f = (H5F_t *)H5I_object(fid);
+                CHECK(f, NULL, "H5I_object");
+
+                /* Open the committed datatype */
+                str_tid = H5Topen2(fid, "datatype", H5P_DEFAULT);
+                CHECK(str_tid, FAIL, "H5Topen2");
+                str_dtype = (H5T_t *)H5I_object(str_tid);
+                CHECK(str_dtype, NULL, "H5I_object");
+
+                /* Verify the committed datatype message version */
+                VERIFY(str_dtype->shared->version, H5O_dtype_ver_bounds[H5F_LIBVER_EARLIEST], "H5O_dtype_ver_bounds");
+
+                /* Close the committed datatype */
+                ret = H5Tclose(str_tid);
+                CHECK(ret, FAIL, "H5Tclose");
+
+
+                /* Create the chunked dataset */
+                did = H5Dcreate2(fid, DSETNAME, tid, sid, H5P_DEFAULT, dcpl, H5P_DEFAULT);
+                CHECK(did, FAIL, "H5Dcreate2");
+
+                /* Get the dataset's datatype */
+                dtid = H5Dget_type(did);
+                CHECK(dtid, FAIL, "H5Dget_type");
+
+                /* Get the internal datatype pointer */
+                dtype = (H5T_t *)H5I_object(dtid);
+                CHECK(dtype, NULL, "H5I_object");
+
+                /* Verify the dataset's datatype message version */
+                /* H5T_COMPOUND, H5T_ENUM, H5T_ARRAY:
+                 *  --the library will set version according to low_bound 
+                 *  --H5T_ARRAY: the earliest version the library will set is 2 
+                 * H5T_INTEGER, H5T_FLOAT, H5T_TIME, H5T_STRING, H5T_BITFIELD, H5T_OPAQUE, H5T_REFERENCE:
+                 *  --the library will only use basic version 
+                 */
+                if(dtype->shared->type == H5T_COMPOUND || 
+                   dtype->shared->type == H5T_ENUM || 
+                   dtype->shared->type == H5T_ARRAY) {
+                    if(dtype->shared->type == H5T_ARRAY && 
+                       f->shared->low_bound == H5F_LIBVER_EARLIEST)
+                        VERIFY(dtype->shared->version, H5O_DTYPE_VERSION_2, "H5O_dtype_ver_bounds");
+                    else
+                        VERIFY(dtype->shared->version, H5O_dtype_ver_bounds[f->shared->low_bound], "H5O_dtype_ver_bounds");
+                } else
+                    VERIFY(dtype->shared->version, H5O_dtype_ver_bounds[H5F_LIBVER_EARLIEST], "H5O_dtype_ver_bounds");
+
+                /* Close the dataset */
+                ret = H5Dclose(did);
+                CHECK(ret, FAIL, "H5Dclose");
+
+                /* Close the dataset's datatype */
+                ret = H5Tclose(dtid);
+                CHECK(ret, FAIL, "H5Tclose");
+
+                /* Delete the dataset */
+                ret = H5Ldelete(fid, DSETNAME, H5P_DEFAULT);
+                CHECK(ret, FAIL, "H5Ldelete");
+
+                /* Close the file */
+                ret = H5Fclose(fid);
+                CHECK(ret, FAIL, "H5Fclose");
+
+            } /* end if */
+        } /* end for */
+    } /* end for */
+
+    /* Close the file access property list */
+    ret = H5Pclose(new_fapl);
+    CHECK(ret, FAIL, "H5Pclose");
+
+    /* Close the dataspace */
+    ret = H5Sclose(sid);
+    CHECK(ret, FAIL, "H5Sclose");
+
+    /* Close the dataset creation property list */
+    ret = H5Pclose(dcpl);
+    CHECK(ret, FAIL, "H5Pclose");
+
+} /* end test_libver_bounds_datatype_check() */
+
+/****************************************************************
+**
+**  test_libver_bounds_attributes():
+**      Verify the attribute message versions:
+**
+**      (a) Create a file with default fcpl and the input fapl.
+**          Create a group and attach the following three attributes 
+**          to the group:
+**          (1) Attribute with a committed datatype
+**          (2) Attribute with integer type
+**          (3) Attribute with character encoding set
+**          Verify the three attributes' message versions.
+**          Close the file.
+**
+**      (b) Create a fcpl that has shared datatype message enabled.
+**          Create a file with the fcpl and the input fapl.
+**          Create a group and attach an attribute with shared 
+**          integer type to the group.
+**          Verify the attribute message version.
+**          Close the file
+**
+**      (b) Create a new fapl that is set to the 5 pairs of low/high
+**          bounds in a "for" loop.  For each pair of setting in
+**          the new fapl:
+**              --Open the same file in (b) with the fapl
+**              --Open the group and attach an attribute with integer
+**                type to the group
+**              --Verify the attribute message version
+**              --Delete the attribute
+**              --Close the group and the file
+**
+****************************************************************/
+static void
+test_libver_bounds_attributes(hid_t fapl)
+{
+    hid_t fid = -1;         /* File ID */
+    hid_t fcpl = -1;        /* File creation property list */
+    hid_t new_fapl = -1;    /* File access property list */
+    hid_t tid = -1;         /* Datatype ID */
+    hid_t gid = -1;         /* Group ID */
+    hid_t sid = -1;         /* Dataspace ID */
+    hid_t aid = -1;         /* Attribute ID */
+    hid_t attr_cpl = -1;    /* Attribute creation property list */
+    H5A_t *attr = NULL;     /* Internal attribute pointer */
+    H5F_t *f = NULL;        /* Internal file pointer */
+    H5F_libver_t low, high; /* Low and high bounds */
+    herr_t ret;             /* Return value */
+
+    /* Retrieve the low/high bounds from the input fapl */ 
+    ret = H5Pget_libver_bounds(fapl, &low, &high);
+    CHECK(ret, FAIL, "H5Pget_libver_bounds");
+
+    /* Create the file */
+    fid = H5Fcreate(FILE8, H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
+    CHECK(fid, FAIL, "H5Fcreate");
+
+    /* Integer datatpye */
+    tid = H5Tcopy(H5T_NATIVE_INT);
+    CHECK(tid, FAIL, "H5Tcopy");
+
+    /* Create a committed datatype */
+    ret = H5Tcommit2(fid, "datatype", tid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+    CHECK(ret, FAIL, "H5Tcommit2");
+
+    /* Create dataspace */
+    sid = H5Screate(H5S_SCALAR);
+    CHECK(sid, FAIL, "H5Screate");
+
+    /* Create a group */
+    gid = H5Gcreate2(fid, GRP_NAME, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+    CHECK(gid, FAIL, "H5Gcreate2");
+
+    /* Attach an attribute to the group with the committed datatype */
+    aid = H5Acreate2(gid, "attr1", tid, sid, H5P_DEFAULT, H5P_DEFAULT);
+    CHECK(aid, FAIL, "H5Acreate2");
+
+    /* Get the internal attribute pointer */
+    attr = (H5A_t *)H5I_object(aid);
+    CHECK(attr, NULL, "H5I_object");
+
+    /* Verify the attribute version */
+    if(low == H5F_LIBVER_EARLIEST)
+        /* The earliest version the library can set for an attribute with committed datatype is 2 */
+        VERIFY(attr->shared->version, H5O_ATTR_VERSION_2, "H5O_attr_ver_bounds");
+    else
+        VERIFY(attr->shared->version, H5O_attr_ver_bounds[low], "H5O_attr_ver_bounds");
+
+    /* Close the attribute */
+    ret = H5Aclose(aid);
+    CHECK(ret, FAIL, "H5Aclose");
+
+    /* Create an attribute to the group with integer type */
+    aid = H5Acreate2(gid, "attr2", H5T_NATIVE_INT, sid, H5P_DEFAULT, H5P_DEFAULT);
+    CHECK(aid, FAIL, "H5Acreate2");
+
+    /* Get the internal attribute pointer */
+    attr = (H5A_t *)H5I_object(aid);
+    CHECK(attr, NULL, "H5I_object");
+
+    /* Verify attribute version */
+    VERIFY(attr->shared->version, H5O_attr_ver_bounds[low], "H5O_attr_ver_bounds");
+
+    /* Close the attribute */
+    ret = H5Aclose(aid);
+    CHECK(ret, FAIL, "H5Aclose");
+
+    /* Enable character encoding in attribute creation property list */
+    attr_cpl = H5Pcreate(H5P_ATTRIBUTE_CREATE);
+    CHECK(attr_cpl, FAIL, "H5Pcreate");
+    ret = H5Pset_char_encoding(attr_cpl, H5T_CSET_UTF8);
+    CHECK(ret, FAIL, "H5Pset_char_encoding");
+
+    /* Attach an attribute to the group with character encoding set */
+    aid = H5Acreate2(gid, "attr3", H5T_NATIVE_INT, sid, attr_cpl, H5P_DEFAULT);
+    CHECK(aid, FAIL, "H5Acreate2");
+
+    /* Get internal attribute pointer */
+    attr = (H5A_t *)H5I_object(aid);
+    CHECK(attr, NULL, "H5I_object");
+
+    /* Verify attribute version */
+    if(low == H5F_LIBVER_EARLIEST)
+        /* The earliest version the library can set for an attribute with character encoding is 3 */
+        VERIFY(attr->shared->version, H5O_ATTR_VERSION_3, "H5O_attr_ver_bounds");
+    else
+        VERIFY(attr->shared->version, H5O_attr_ver_bounds[low], "H5O_attr_ver_bounds");
+
+    /* Close the attribute */
+    ret = H5Aclose(aid);
+    CHECK(ret, FAIL, "H5Aclose");
+
+    /* Close the attribute creation property list */
+    ret = H5Pclose(attr_cpl);
+    CHECK(ret, FAIL, "H5Pclose");
+
+    /* Close the group */
+    ret = H5Gclose(gid);
+    CHECK(ret, FAIL, "H5Gclose");
+
+    /* Close the dataspace */
+    ret = H5Sclose(sid);
+    CHECK(ret, FAIL, "H5Sclose");
+
+    /* Close the datatype */
+    ret = H5Tclose(tid);
+    CHECK(ret, FAIL, "H5Tclose");
+
+    /* Close the file */
+    ret = H5Fclose(fid);
+    CHECK(ret, FAIL, "H5Fclose");
+
+    /* Create a copy of the file creation property list */
+    fcpl = H5Pcreate(H5P_FILE_CREATE);
+    CHECK(fcpl, FAIL, "H5Pcreate");
+
+    /* Enable shared datatype message */
+    ret = H5Pset_shared_mesg_nindexes(fcpl, 1);
+    CHECK(ret, FAIL, "H5Pset_shared_mesg_nindexes");
+    ret = H5Pset_shared_mesg_index(fcpl, 0, H5O_SHMESG_DTYPE_FLAG, 2);
+    CHECK(ret, FAIL, "H5Pset_shared_mesg_index");
+
+    /* Create the file with shared datatype message enabled */
+    fid = H5Fcreate(FILE8, H5F_ACC_TRUNC, fcpl, fapl);
+    CHECK(fid, FAIL, "H5Fcreate");
+
+    /* Create an integer datatye */
+    tid = H5Tcopy(H5T_NATIVE_INT);
+    CHECK(tid, FAIL, "H5Tcopy");
+
+    /* Create dataspace */
+    sid = H5Screate(H5S_SCALAR);
+    CHECK(sid, FAIL, "H5Screate");
+
+    /* Create a group */
+    gid = H5Gcreate2(fid, GRP_NAME, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+    CHECK(gid, FAIL, "H5Gcreate2");
+
+    /* Attach an attribute to the group with shared integer datatype */
+    aid = H5Acreate2(gid, ATTR_NAME, tid, sid, H5P_DEFAULT, H5P_DEFAULT);
+    CHECK(aid, FAIL, "H5Acreate2");
+
+    /* Get the internal attribute pointer */
+    attr = (H5A_t *)H5I_object(aid);
+    CHECK(attr, NULL, "H5I_object");
+
+    /* Verify the attribute version */
+    if(low == H5F_LIBVER_EARLIEST)
+        /* The earliest version the library can set for an attribute with shared datatype is 2 */
+        VERIFY(attr->shared->version, H5O_ATTR_VERSION_2, "H5O_attr_ver_bounds");
+    else
+        VERIFY(attr->shared->version, H5O_attr_ver_bounds[low], "H5O_attr_ver_bounds");
+
+    /* Close the attribute */
+    ret = H5Aclose(aid);
+    CHECK(ret, FAIL, "H5Aclose");
+
+    /* Close the group */
+    ret = H5Gclose(gid);
+    CHECK(ret, FAIL, "H5Gclose");
+
+    /* Close the dataspace */
+    ret = H5Sclose(sid);
+    CHECK(ret, FAIL, "H5Sclose");
+
+    /* Close the datatype */
+    ret = H5Tclose(tid);
+    CHECK(ret, FAIL, "H5Tclose");
+
+    /* Close the file */
+    ret = H5Fclose(fid);
+    CHECK(ret, FAIL, "H5Fclose");
+
+    /* Create a default file access property list */
+    new_fapl = H5Pcreate(H5P_FILE_ACCESS);
+    CHECK(new_fapl, FAIL, "H5Pcreate");
+
+    /* Create a scalar dataspace to be used later for the attribute */
+    sid = H5Screate(H5S_SCALAR);
+    CHECK(sid, FAIL, "H5Screate");
+
+    /* Loop through all the combinations of low/high bounds */
+    /* Open the file and group and attach an attribute to the group */
+    /* Verify the attribute version */
+    for(low = H5F_LIBVER_EARLIEST; low < H5F_LIBVER_NBOUNDS; low++) {
+        for(high = H5F_LIBVER_EARLIEST; high < H5F_LIBVER_NBOUNDS; high++) {
+            H5E_BEGIN_TRY {
+                ret = H5Pset_libver_bounds(new_fapl, low, high);
+            } H5E_END_TRY;
+
+            if(ret < 0) /* Invalid low/high combinations */
+                continue;
+
+            /* Open the file */
+            H5E_BEGIN_TRY {
+                fid = H5Fopen(FILE8, H5F_ACC_RDWR, new_fapl);
+            } H5E_END_TRY;
+
+            if(fid >=0 ) { /* The file open succeeds */
+
+                /* Get the internal file pointer */
+                f = (H5F_t *)H5I_object(fid);
+                CHECK(f, NULL, "H5I_object");
+
+                /* Open the group */
+                gid = H5Gopen2(fid, GRP_NAME, H5P_DEFAULT);
+                CHECK(gid, FAIL, "H5Gopen2");
+
+                /* Attach an attribute to the group */
+                aid = H5Acreate2(gid, "attr1", H5T_NATIVE_INT, sid, H5P_DEFAULT, H5P_DEFAULT);
+                CHECK(aid, FAIL, "H5Acreate2");
+
+                /* Get the internal attribute pointer */
+                attr = (H5A_t *)H5I_object(aid);
+                CHECK(attr, NULL, "H5I_object");
+
+                /* Verify the attribute message version */
+                VERIFY(attr->shared->version, H5O_attr_ver_bounds[f->shared->low_bound], "H5O_attr_ver_bounds");
+
+                /* Close the attribute */
+                ret = H5Aclose(aid);
+                CHECK(ret, FAIL, "H5Aclose");
+
+                /* Delete the attribute */
+                ret = H5Adelete(gid, "attr1");
+                CHECK(ret, FAIL, "H5Adelete");
+
+                /* Close the group */
+                ret = H5Gclose(gid);
+                CHECK(ret, FAIL, "H5Gclose");
+
+                /* Close the file */
+                ret = H5Fclose(fid);
+                CHECK(ret, FAIL, "H5Fclose");
+
+            } /* end if */
+        } /* end for */
+    } /* end for */
+
+    /* Close the file access property list */
+    ret = H5Pclose(new_fapl);
+    CHECK(ret, FAIL, "H5Pclose");
+
+    /* Close the dataspace */
+    ret = H5Sclose(sid);
+    CHECK(ret, FAIL, "H5Sclose");
+
+} /* end test_libver_bounds_attributes() */
+
 /****************************************************************
 **
 **  test_libver_macros():
@@ -5333,6 +7203,7 @@ test_file(void)
     test_filespace_round_compatible();          /* Testing file space compatibility for files from trunk to 1_8 to trunk */
     test_filespace_1_10_0_compatible();          /* Testing file space compatibility for files from release 1.10.0 */
     test_libver_bounds();                       /* Test compatibility for file space management */
+    test_libver_bounds_low_high();
     test_libver_macros();                       /* Test the macros for library version comparison */
     test_libver_macros2();                      /* Test the macros for library version comparison */
 #ifndef H5_NO_DEPRECATED_SYMBOLS