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authorQuincey Koziol <koziol@hdfgroup.org>2010-01-23 07:00:00 (GMT)
committerQuincey Koziol <koziol@hdfgroup.org>2010-01-23 07:00:00 (GMT)
commitbb25c85e794449d3bf59d8811e53288569161790 (patch)
treee6c37cf6f8bba9323540ddddb70300b43351d88f /src/H5Eint.c
parentfcc03a356b4dd5e58cc88b692b3d05d75b8ae5d0 (diff)
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[svn-r18159] Description:
Bring Coverity fixes from 1/22/10 session to trunk: r18137: 219: Initialized hid_t to -1 and added close to error block. 189-191: Initialized line to NULL and added free line, and close fp to error block. r18138: 19: Moved code block for printing that the number of enums is empty to the error block. (Would never have been executed otherwise) r18139: Fix coverity item 58. Moved code related to displaying the parent of a repeated group to the else(isRoot) section, as the root group has no parent. r18140: 218: Initialized ret_value variable to -1. Because of throw Exception in default case of switch, the coverity problem would not have executed anyway. Good pratice is to initialize variables. r18141: Fix coverity item 92. Added code to H5E_register_class to free cls in case of an error. r18142: Fix coverity item 91. Added code to H5E_create_msg to free msg in case of an error. r18143: fixed issue 14, took away "if" and used #ifndef_xxx. r18144: Fix coverity item 110. Added code to H5Eget_minor to free msg_str in case of an error. r18145: fixed coverity #18 removed "aligned", it is always NULL. r18146: Fix coverity item 109. Added code to H5Eget_major to free msg_str in case of an error. r18147: Fixed coverity #81 and #82, Check for bad pointer(s), but can't issue error, just leave r18148: Fix coverity item 97. Added code to H5FD_fapl_open to free copied_driver_info in case of an error. r18149: Fix coverity item 96. Added code to H5FD_dxpl_open to free copied_driver_info in case of an error. r18150: Fix Coverity issue #29: Protected cache_ptr dereferences with "if(pass)" block r18151: Fix coverity item 93. Added code to H5FL_fac_init to free factory and new_node in case of an error. r18152: Fix coverity items 98 and 99. Added code free allocated space in case of error. r18155: 124: Freed head pointer before jumping to done. There was no error handling block and normal exit used same path out. 120-123: Freed list of lists in error handling block. r18156: Fix coverity issues 179, 180, 181, 182, 183, 184, 186, 320, 407. These were resource leak issues where allocated memory was not freed, generally in the case of tests that failed. Tested on: Mac OS X/32 10.6.2 (amazon) debug & production
Diffstat (limited to 'src/H5Eint.c')
-rw-r--r--src/H5Eint.c24
1 files changed, 18 insertions, 6 deletions
diff --git a/src/H5Eint.c b/src/H5Eint.c
index 831d51b..d64fcbd 100644
--- a/src/H5Eint.c
+++ b/src/H5Eint.c
@@ -225,8 +225,9 @@ H5E_walk1_cb(int n, H5E_error1_t *err_desc, void *client_data)
const char *maj_str = "No major description"; /* Major error description */
const char *min_str = "No minor description"; /* Minor error description */
unsigned have_desc = 1; /* Flag to indicate whether the error has a "real" description */
+ herr_t ret_value = SUCCEED;
- FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5E_walk1_cb)
+ FUNC_ENTER_NOAPI_NOINIT(H5E_walk1_cb)
/* Check arguments */
HDassert(err_desc);
@@ -240,7 +241,11 @@ H5E_walk1_cb(int n, H5E_error1_t *err_desc, void *client_data)
/* Get descriptions for the major and minor error numbers */
maj_ptr = (H5E_msg_t *)H5I_object_verify(err_desc->maj_num, H5I_ERROR_MSG);
min_ptr = (H5E_msg_t *)H5I_object_verify(err_desc->min_num, H5I_ERROR_MSG);
- HDassert(maj_ptr && min_ptr);
+
+ /* Check for bad pointer(s), but can't issue error, just leave */
+ if(!maj_ptr || !min_ptr)
+ HGOTO_DONE(FAIL)
+
if(maj_ptr->msg)
maj_str = maj_ptr->msg;
if(min_ptr->msg)
@@ -294,7 +299,8 @@ H5E_walk1_cb(int n, H5E_error1_t *err_desc, void *client_data)
fprintf(stream, "%*smajor: %s\n", (H5E_INDENT * 2), "", maj_str);
fprintf(stream, "%*sminor: %s\n", (H5E_INDENT * 2), "", min_str);
- FUNC_LEAVE_NOAPI(SUCCEED)
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
} /* end H5E_walk1_cb() */
#endif /* H5_NO_DEPRECATED_SYMBOLS */
@@ -341,8 +347,9 @@ H5E_walk2_cb(unsigned n, const H5E_error2_t *err_desc, void *client_data)
const char *maj_str = "No major description"; /* Major error description */
const char *min_str = "No minor description"; /* Minor error description */
unsigned have_desc = 1; /* Flag to indicate whether the error has a "real" description */
+ herr_t ret_value = SUCCEED;
- FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5E_walk2_cb)
+ FUNC_ENTER_NOAPI_NOINIT(H5E_walk2_cb)
/* Check arguments */
HDassert(err_desc);
@@ -356,7 +363,11 @@ H5E_walk2_cb(unsigned n, const H5E_error2_t *err_desc, void *client_data)
/* Get descriptions for the major and minor error numbers */
maj_ptr = (H5E_msg_t *)H5I_object_verify(err_desc->maj_num, H5I_ERROR_MSG);
min_ptr = (H5E_msg_t *)H5I_object_verify(err_desc->min_num, H5I_ERROR_MSG);
- HDassert(maj_ptr && min_ptr);
+
+ /* Check for bad pointer(s), but can't issue error, just leave */
+ if(!maj_ptr || !min_ptr)
+ HGOTO_DONE(FAIL)
+
if(maj_ptr->msg)
maj_str = maj_ptr->msg;
if(min_ptr->msg)
@@ -411,7 +422,8 @@ H5E_walk2_cb(unsigned n, const H5E_error2_t *err_desc, void *client_data)
fprintf(stream, "%*smajor: %s\n", (H5E_INDENT * 2), "", maj_str);
fprintf(stream, "%*sminor: %s\n", (H5E_INDENT * 2), "", min_str);
- FUNC_LEAVE_NOAPI(SUCCEED)
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
} /* end H5E_walk2_cb() */
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * Copyright by the Board of Trustees of the University of Illinois.         *
 * All rights reserved.                                                      *
 *                                                                           *
 * This file is part of HDF5.  The full HDF5 copyright notice, including     *
 * terms governing use, modification, and redistribution, is contained in    *
 * the COPYING file, which can be found at the root of the source code       *
 * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
 * If you do not have access to either file, you may request a copy from     *
 * help@hdfgroup.org.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/***********************************************************
*
* Test program:     th5s
*
* Test the dataspace functionality
*
*************************************************************/

#include "testhdf5.h"
#include "H5srcdir.h"

#include "H5Iprivate.h"
#include "H5Pprivate.h"

/*
 * This file needs to access private information from the H5S package.
 * This file also needs to access the dataspace testing code.
 */
#define H5S_FRIEND      /*suppress error about including H5Spkg   */
#define H5S_TESTING	/*suppress warning about H5S testing funcs*/
#include "H5Spkg.h"     /* Dataspaces               */

/*
 * This file needs to access private information from the H5O package.
 * This file also needs to access the dataspace testing code.
 */
#define H5O_FRIEND      /*suppress error about including H5Opkg   */
#define H5O_TESTING
#include "H5Opkg.h"     /* Object header            */

#define TESTFILE   "th5s.h5"
#define DATAFILE   "th5s1.h5"
#define NULLFILE   "th5s2.h5"
#define BASICFILE  "th5s3.h5"
#define ZEROFILE   "th5s4.h5"
#define BASICDATASET  "basic_dataset"
#define BASICDATASET1 "basic_dataset1"
#define BASICDATASET2 "basic_dataset2"
#define BASICDATASET3 "basic_dataset3"
#define BASICDATASET4 "basic_dataset4"
#define BASICATTR  "basic_attribute"
#define NULLDATASET  "null_dataset"
#define NULLATTR   "null_attribute"
#define EXTFILE_NAME "ext_file"

/* 3-D dataset with fixed dimensions */
#define SPACE1_RANK    3
#define SPACE1_DIM1    3
#define SPACE1_DIM2    15
#define SPACE1_DIM3    13

/* 4-D dataset with one unlimited dimension */
#define SPACE2_RANK    4
#define SPACE2_DIM1    0
#define SPACE2_DIM2    15
#define SPACE2_DIM3    13
#define SPACE2_DIM4    23
#define SPACE2_MAX1    H5S_UNLIMITED
#define SPACE2_MAX2    15
#define SPACE2_MAX3    13
#define SPACE2_MAX4    23

/* Scalar dataset with simple datatype */
#define SPACE3_RANK    0
unsigned space3_data=65;

/* Scalar dataset with compound datatype */
#define SPACE4_FIELDNAME1    "c1"
#define SPACE4_FIELDNAME2    "u"
#define SPACE4_FIELDNAME3    "f"
#define SPACE4_FIELDNAME4    "c2"
size_t space4_field1_off=0;
size_t space4_field2_off=0;
size_t space4_field3_off=0;
size_t space4_field4_off=0;
struct space4_struct {
    char c1;
    unsigned u;
    float f;
    char c2;
} space4_data={'v',987123,-3.14F,'g'}; /* Test data for 4th dataspace */

/*
 *  Testing configuration defines used by:
 *      test_h5s_encode_regular_hyper()
 *      test_h5s_encode_irregular_hyper()
 *      test_h5s_encode_points()
 */
#define CONFIG_8    1
#define CONFIG_16   2
#define CONFIG_32   3
#define POWER8      256             /* 2^8 */
#define POWER16     65536           /* 2^16 */
#define POWER32     4294967296      /* 2^32 */


/****************************************************************
**
**  test_h5s_basic(): Test basic H5S (dataspace) code.
**
****************************************************************/
static void
test_h5s_basic(void)
{
    hid_t        fid1;        /* HDF5 File IDs        */
    hid_t        sid1, sid2;    /* Dataspace ID            */
    hid_t        dset1;        /* Dataset ID            */
    hid_t               aid1;           /* Attribute ID                 */
    int                rank;        /* Logical rank of dataspace    */
    hsize_t        dims1[] = {SPACE1_DIM1, SPACE1_DIM2, SPACE1_DIM3};
    hsize_t        dims2[] = {SPACE2_DIM1, SPACE2_DIM2, SPACE2_DIM3,
                SPACE2_DIM4};
    hsize_t        dims3[H5S_MAX_RANK+1];
    hsize_t        max2[] = {SPACE2_MAX1, SPACE2_MAX2, SPACE2_MAX3,
                SPACE2_MAX4};
    hsize_t        tdims[4];    /* Dimension array to test with */
    hsize_t        tmax[4];
    hssize_t        n;         /* Number of dataspace elements */
    herr_t        ret;        /* Generic return value        */

    /* Output message about test being performed */
    MESSAGE(5, ("Testing Dataspace Manipulation\n"));

    sid1 = H5Screate_simple(SPACE1_RANK, dims1, max2);
    CHECK(sid1, FAIL, "H5Screate_simple");

    n = H5Sget_simple_extent_npoints(sid1);
    CHECK(n, FAIL, "H5Sget_simple_extent_npoints");
    VERIFY(n, SPACE1_DIM1 * SPACE1_DIM2 * SPACE1_DIM3,
    "H5Sget_simple_extent_npoints");

    rank = H5Sget_simple_extent_ndims(sid1);
    CHECK(rank, FAIL, "H5Sget_simple_extent_ndims");
    VERIFY(rank, SPACE1_RANK, "H5Sget_simple_extent_ndims");

    rank = H5Sget_simple_extent_dims(sid1, tdims, NULL);
    CHECK(rank, FAIL, "H5Sget_simple_extent_dims");
    VERIFY(HDmemcmp(tdims, dims1, SPACE1_RANK * sizeof(hsize_t)), 0,
    "H5Sget_simple_extent_dims");

    sid2 = H5Screate_simple(SPACE2_RANK, dims2, max2);
    CHECK(sid2, FAIL, "H5Screate_simple");

    n = H5Sget_simple_extent_npoints(sid2);
    CHECK(n, FAIL, "H5Sget_simple_extent_npoints");
    VERIFY(n, SPACE2_DIM1 * SPACE2_DIM2 * SPACE2_DIM3 * SPACE2_DIM4,
    "H5Sget_simple_extent_npoints");

    rank = H5Sget_simple_extent_ndims(sid2);
    CHECK(rank, FAIL, "H5Sget_simple_extent_ndims");
    VERIFY(rank, SPACE2_RANK, "H5Sget_simple_extent_ndims");

    rank = H5Sget_simple_extent_dims(sid2, tdims, tmax);
    CHECK(rank, FAIL, "H5Sget_simple_extent_dims");
    VERIFY(HDmemcmp(tdims, dims2, SPACE2_RANK * sizeof(hsize_t)), 0,
    "H5Sget_simple_extent_dims");
    VERIFY(HDmemcmp(tmax, max2, SPACE2_RANK * sizeof(hsize_t)), 0,
    "H5Sget_simple_extent_dims");

    /* Change max dims to be equal to the dimensions */
    ret = H5Sset_extent_simple(sid1, SPACE1_RANK, dims1, NULL);
    CHECK(ret, FAIL, "H5Sset_extent_simple");
    rank = H5Sget_simple_extent_dims(sid1, tdims, tmax);
    CHECK(rank, FAIL, "H5Sget_simple_extent_dims");
    VERIFY(HDmemcmp(tdims, dims1, SPACE1_RANK * sizeof(hsize_t)), 0,
    "H5Sget_simple_extent_dims");
    VERIFY(HDmemcmp(tmax, dims1, SPACE1_RANK * sizeof(hsize_t)), 0,
    "H5Sget_simple_extent_dims");

    ret = H5Sclose(sid1);
    CHECK(ret, FAIL, "H5Sclose");

    ret = H5Sclose(sid2);
    CHECK(ret, FAIL, "H5Sclose");

    /*
     * Check to be sure we can't create a simple dataspace that has too many
     * dimensions.
     */
    H5E_BEGIN_TRY {
    sid1 = H5Screate_simple(H5S_MAX_RANK+1, dims3, NULL);
    } H5E_END_TRY;
    VERIFY(sid1, FAIL, "H5Screate_simple");

    /*
     * Try reading a file that has been prepared that has a dataset with a
     * higher dimensionality than what the library can handle.
     *
     * If this test fails and the H5S_MAX_RANK variable has changed, follow
     * the instructions in space_overflow.c for regenerating the th5s.h5 file.
     */
    {
    const char *testfile = H5_get_srcdir_filename(TESTFILE); /* Corrected test file name */

    fid1 = H5Fopen(testfile, H5F_ACC_RDONLY, H5P_DEFAULT);
    CHECK_I(fid1, "H5Fopen");
    if (fid1 >= 0){
        dset1 = H5Dopen2(fid1, "dset", H5P_DEFAULT);
        VERIFY(dset1, FAIL, "H5Dopen2");
        ret = H5Fclose(fid1);
        CHECK_I(ret, "H5Fclose");
    }
    else
        HDprintf("***cannot open the pre-created H5S_MAX_RANK test file (%s)\n", testfile);
    }

    /* Verify that incorrect dimensions don't work */
    dims1[0] = H5S_UNLIMITED;
    sid1 = H5Screate_simple(SPACE1_RANK, dims1, NULL);
    VERIFY(sid1, FAIL, "H5Screate_simple");

    dims1[0] = H5S_UNLIMITED;
    sid1 = H5Screate(H5S_SIMPLE);
    CHECK(sid1, FAIL, "H5Screate");

    ret = H5Sset_extent_simple(sid1,SPACE1_RANK,dims1,NULL);
    VERIFY(ret, FAIL, "H5Sset_extent_simple");

    ret = H5Sclose(sid1);
    CHECK_I(ret, "H5Sclose");

    /*
     * Try writing simple dataspaces without setting their extents
     */
    /* Create the file */
    fid1 = H5Fcreate(BASICFILE, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
    CHECK(fid1, FAIL, "H5Fcreate");

    dims1[0]=SPACE1_DIM1;

    sid1 = H5Screate(H5S_SIMPLE);
    CHECK(sid1, FAIL, "H5Screate");
    sid2 = H5Screate_simple(1, dims1, dims1);
    CHECK(sid2, FAIL, "H5Screate");

    /* This dataset's space has no extent; it should not be created */
    H5E_BEGIN_TRY {
    dset1 = H5Dcreate2(fid1, BASICDATASET, H5T_NATIVE_INT, sid1, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
    } H5E_END_TRY
    VERIFY(dset1, FAIL, "H5Dcreate2");

    dset1 = H5Dcreate2(fid1, BASICDATASET2, H5T_NATIVE_INT, sid2, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
    CHECK(dset1, FAIL, "H5Dcreate2");

    /* Try some writes with the bad dataspace (sid1) */
    H5E_BEGIN_TRY {
    ret = H5Dwrite(dset1, H5T_NATIVE_INT, sid1, H5S_ALL, H5P_DEFAULT, &n);
    } H5E_END_TRY
    VERIFY(ret, FAIL, "H5Dwrite");

    H5E_BEGIN_TRY {
    ret = H5Dwrite(dset1, H5T_NATIVE_INT, H5S_ALL, sid1, H5P_DEFAULT, &n);
    } H5E_END_TRY
    VERIFY(ret, FAIL, "H5Dwrite");

    H5E_BEGIN_TRY {
    ret = H5Dwrite(dset1, H5T_NATIVE_INT, sid1, sid1, H5P_DEFAULT, &n);
    } H5E_END_TRY
    VERIFY(ret, FAIL, "H5Dwrite");

    /* Try to iterate using the bad dataspace */
    H5E_BEGIN_TRY {
    ret = H5Diterate(&n, H5T_NATIVE_INT, sid1, NULL, NULL);
    } H5E_END_TRY
    VERIFY(ret, FAIL, "H5Diterate");

    /* Try to fill using the bad dataspace */
    H5E_BEGIN_TRY {
    ret = H5Dfill(NULL, H5T_NATIVE_INT, &n, H5T_NATIVE_INT, sid1);
    } H5E_END_TRY
    VERIFY(ret, FAIL, "H5Dfill");

    /* Now use the bad dataspace as the space for an attribute */
    H5E_BEGIN_TRY {
    aid1 = H5Acreate2(dset1, BASICATTR, H5T_NATIVE_INT, sid1, H5P_DEFAULT, H5P_DEFAULT);
    } H5E_END_TRY
    VERIFY(aid1, FAIL, "H5Acreate2");

    /* Make sure that dataspace reads using the bad dataspace fail */
    H5E_BEGIN_TRY {
    ret = H5Dread(dset1, H5T_NATIVE_INT, sid1, H5S_ALL, H5P_DEFAULT, &n);
    } H5E_END_TRY
    VERIFY(ret, FAIL, "H5Dread");

    H5E_BEGIN_TRY {
    ret = H5Dread(dset1, H5T_NATIVE_INT, H5S_ALL, sid1, H5P_DEFAULT, &n);
    } H5E_END_TRY
    VERIFY(ret, FAIL, "H5Dread");

    H5E_BEGIN_TRY {
    ret = H5Dread(dset1, H5T_NATIVE_INT, sid1, sid1, H5P_DEFAULT, &n);
    } H5E_END_TRY
    VERIFY(ret, FAIL, "H5Dread");

    /* Clean up */
    ret = H5Dclose(dset1);
    CHECK(ret, FAIL, "H5Dclose");
    ret = H5Sclose(sid1);
    CHECK(ret, FAIL, "H5Sclose");
    ret = H5Sclose(sid2);
    CHECK(ret, FAIL, "H5Sclose");
    ret = H5Fclose(fid1);
    CHECK(ret, FAIL, "H5Fclose");
}                /* test_h5s_basic() */

/****************************************************************
**
**  test_h5s_null(): Test NULL dataspace
**
****************************************************************/
static void
test_h5s_null(void)
{
    hid_t fid;          /* File ID */
    hid_t sid;          /* Dataspace IDs */
    hid_t dset_sid, dset_sid2;    /* Dataspace IDs */
    hid_t attr_sid;     /* Dataspace IDs */
    hid_t did;          /* Dataset ID */
    hid_t attr;         /*Attribute ID */
    H5S_class_t stype;  /* dataspace type */
    hssize_t nelem;     /* Number of elements */
    unsigned uval=2;    /* Buffer for writing to dataset */
    int val=1;          /* Buffer for writing to attribute */
    H5S_sel_type sel_type;      /* Type of selection currently */
    hsize_t dims[1]={10};       /* Dimensions for converting null dataspace to simple */
    H5S_class_t space_type;     /* Type of dataspace */
    herr_t ret;         /* Generic return value */

    /* Output message about test being performed */
    MESSAGE(5, ("Testing Null Dataspace\n"));

    /* Create the file */
    fid = H5Fcreate(NULLFILE, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
    CHECK(fid, FAIL, "H5Fcreate");

    sid = H5Screate(H5S_NULL);
    CHECK(sid, FAIL, "H5Screate");

    /* Check that the null dataspace actually has 0 elements */
    nelem = H5Sget_simple_extent_npoints(sid);
    VERIFY(nelem, 0, "H5Sget_simple_extent_npoints");

    /* Check that the dataspace was created with an "all" selection */
    sel_type = H5Sget_select_type(sid);
    VERIFY(sel_type, H5S_SEL_ALL, "H5Sget_select_type");

    /* Check that the null dataspace has 0 elements selected */
    nelem = H5Sget_select_npoints(sid);
    VERIFY(nelem, 0, "H5Sget_select_npoints");

    /* Change to "none" selection */
    ret = H5Sselect_none(sid);
    CHECK(ret, FAIL, "H5Sselect_none");

    /* Check that the null dataspace has 0 elements selected */
    nelem = H5Sget_select_npoints(sid);
    VERIFY(nelem, 0, "H5Sget_select_npoints");

    /* Check to be sure we can't set a hyperslab selection on a null dataspace */
    H5E_BEGIN_TRY {
        hsize_t start[1]={0};
        hsize_t count[1]={0};

    ret = H5Sselect_hyperslab(sid, H5S_SELECT_SET, start, NULL, count, NULL);
    } H5E_END_TRY;
    VERIFY(ret, FAIL, "H5Sselect_hyperslab");

    /* Check to be sure we can't set a point selection on a null dataspace */
    H5E_BEGIN_TRY {
        hsize_t    coord[1][1]; /* Coordinates for point selection */

        coord[0][0]=0;
    ret = H5Sselect_elements(sid, H5S_SELECT_SET, (size_t)1, (const hsize_t *)coord);
    } H5E_END_TRY;
    VERIFY(ret, FAIL, "H5Sselect_elements");

    /* Create first dataset */
    did = H5Dcreate2(fid, NULLDATASET, H5T_NATIVE_UINT, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
    CHECK(did, FAIL, "H5Dcreate2");

    /* Write "nothing" to the dataset */
    ret = H5Dwrite(did, H5T_NATIVE_UINT, H5S_ALL, H5S_ALL, H5P_DEFAULT, &uval);
    CHECK(ret, FAIL, "H5Dwrite");

    /* Write "nothing" to the dataset (with type conversion :-) */
    ret = H5Dwrite(did, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, &val);
    CHECK(ret, FAIL, "H5Dwrite");

    /* Try reading from the dataset (make certain our buffer is unmodified) */
    ret = H5Dread(did, H5T_NATIVE_UINT, H5S_ALL, H5S_ALL, H5P_DEFAULT, &uval);
    CHECK(ret, FAIL, "H5Dread");
    VERIFY(uval, 2, "H5Dread");

    /* Try reading from the dataset (with type conversion :-) (make certain our buffer is unmodified) */
    ret = H5Dread(did, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, &val);
    CHECK(ret, FAIL, "H5Dread");
    VERIFY(val, 1, "H5Dread");

    /* Create an attribute for the group */
    attr = H5Acreate2(did, NULLATTR, H5T_NATIVE_INT, sid, H5P_DEFAULT, H5P_DEFAULT);
    CHECK(attr, FAIL, "H5Acreate2");

    /* Write "nothing" to the attribute */
    ret = H5Awrite(attr, H5T_NATIVE_INT, &val);
    CHECK(ret, FAIL, "H5Awrite");

    /* Write "nothing" to the attribute (with type conversion :-) */
    ret = H5Awrite(attr, H5T_NATIVE_UINT, &uval);
    CHECK(ret, FAIL, "H5Awrite");

    /* Try reading from the attribute (make certain our buffer is unmodified) */
    ret = H5Aread(attr, H5T_NATIVE_INT, &val);
    CHECK(ret, FAIL, "H5Aread");
    VERIFY(val, 1, "H5Aread");

    /* Try reading from the attribute (with type conversion :-) (make certain our buffer is unmodified) */
    ret = H5Aread(attr, H5T_NATIVE_UINT, &uval);
    CHECK(ret, FAIL, "H5Aread");
    VERIFY(uval, 2, "H5Aread");

    /* Close attribute */
    ret=H5Aclose(attr);
    CHECK(ret, FAIL, "H5Aclose");

    /* Close the dataset */
    ret = H5Dclose(did);
    CHECK(ret, FAIL, "H5Dclose");

    /* Verify that we've got the right kind of dataspace */
    space_type = H5Sget_simple_extent_type(sid);
    VERIFY(space_type, H5S_NULL, "H5Sget_simple_extent_type");

    /* Convert the null dataspace to a simple dataspace */
    ret = H5Sset_extent_simple(sid, 1, dims, NULL);
    CHECK(ret, FAIL, "H5Sset_extent_simple");

    /* Verify that we've got the right kind of dataspace now */
    space_type = H5Sget_simple_extent_type(sid);
    VERIFY(space_type, H5S_SIMPLE, "H5Sget_simple_extent_type");

    /* Close the dataspace */
    ret = H5Sclose(sid);
    CHECK(ret, FAIL, "H5Sclose");

    /* Close the file */
    ret = H5Fclose(fid);
    CHECK(ret, FAIL, "H5Fclose");

    /*============================================
     *  Reopen the file to check the dataspace
     *============================================
     */
    fid = H5Fopen(NULLFILE, H5F_ACC_RDONLY, H5P_DEFAULT);
    CHECK(fid, FAIL, "H5Fopen");

    /* Reopen the dataset */
    did = H5Dopen2(fid, NULLDATASET, H5P_DEFAULT);
    CHECK(did, FAIL, "H5Dopen2");

    /* Get the space of the dataset */
    dset_sid = H5Dget_space(did);
    CHECK(dset_sid, FAIL, "H5Dget_space");

    /* Query the NULL dataspace */
    dset_sid2 = H5Scopy(dset_sid);
    CHECK(dset_sid2, FAIL, "H5Scopy");

    /* Verify the class type of dataspace */
    stype = H5Sget_simple_extent_type(dset_sid2);
    VERIFY(stype, H5S_NULL, "H5Sget_simple_extent_type");

    /* Verify there is zero element in the dataspace */
    ret = (herr_t)H5Sget_simple_extent_npoints(dset_sid2);
    VERIFY(ret, 0, "H5Sget_simple_extent_npoints");

    /* Try reading from the dataset (make certain our buffer is unmodified) */
    ret = H5Dread(did, H5T_NATIVE_UINT, H5S_ALL, H5S_ALL, H5P_DEFAULT, &uval);
    CHECK(ret, FAIL, "H5Dread");
    VERIFY(uval, 2, "H5Dread");

    /* Close the dataspace */
    ret = H5Sclose(dset_sid);
    CHECK(ret, FAIL, "H5Sclose");

    ret = H5Sclose(dset_sid2);
    CHECK(ret, FAIL, "H5Sclose");

    /* Open the attribute for the dataset */
    attr = H5Aopen(did, NULLATTR, H5P_DEFAULT);
    CHECK(attr, FAIL, "H5Aopen");

    /* Get the space of the dataset */
    attr_sid = H5Aget_space(attr);
    CHECK(attr_sid, FAIL, "H5Aget_space");

    /* Verify the class type of dataspace */
    stype = H5Sget_simple_extent_type(attr_sid);
    VERIFY(stype, H5S_NULL, "H5Sget_simple_extent_type");

    /* Verify there is zero element in the dataspace */
    ret = (herr_t)H5Sget_simple_extent_npoints(attr_sid);
    VERIFY(ret, 0, "H5Sget_simple_extent_npoints");

    /* Close the dataspace */
    ret = H5Sclose(attr_sid);
    CHECK(ret, FAIL, "H5Sclose");

    /* Try reading from the attribute (make certain our buffer is unmodified) */
    ret = H5Aread(attr, H5T_NATIVE_INT, &val);
    CHECK(ret, FAIL, "H5Aread");
    VERIFY(val, 1, "H5Aread");

    /* Close attribute */
    ret=H5Aclose(attr);
    CHECK(ret, FAIL, "H5Aclose");

    /* Close the dataset */
    ret = H5Dclose(did);
    CHECK(ret, FAIL, "H5Dclose");

    /* Close the file */
    ret = H5Fclose(fid);
    CHECK(ret, FAIL, "H5Fclose");
} /* end test_h5s_null() */

/****************************************************************
**
**  test_h5s_zero_dim(): Test the code for dataspace with zero dimension size
**
****************************************************************/
static void
test_h5s_zero_dim(void)
{
    hid_t        fid1;        /* HDF5 File IDs        */
    hid_t        sid1, attr_sid;    /* Dataspace ID            */
    hid_t        sid_chunk;    /* Dataspace ID for chunked dataset */
    hid_t        dset1;        /* Dataset ID            */
    hid_t               plist_id;       /* Dataset creation property list */
    hid_t               attr;           /* Attribute ID                 */
    int                rank;        /* Logical rank of dataspace    */
    hsize_t        dims1[] = {0, SPACE1_DIM2, SPACE1_DIM3};
    hsize_t        max_dims[] = {SPACE1_DIM1+1, SPACE1_DIM2, SPACE1_DIM3};
    hsize_t        extend_dims[] = {SPACE1_DIM1, SPACE1_DIM2, SPACE1_DIM3};
    hsize_t             chunk_dims[] = {SPACE1_DIM1, SPACE1_DIM2/3, SPACE1_DIM3};
    hsize_t        tdims[SPACE1_RANK];    /* Dimension array to test with */
    int                 wdata[SPACE1_DIM2][SPACE1_DIM3];
    int                 rdata[SPACE1_DIM2][SPACE1_DIM3];
    short               wdata_short[SPACE1_DIM2][SPACE1_DIM3];
    short               rdata_short[SPACE1_DIM2][SPACE1_DIM3];
    int                 wdata_real[SPACE1_DIM1][SPACE1_DIM2][SPACE1_DIM3];
    int                 rdata_real[SPACE1_DIM1][SPACE1_DIM2][SPACE1_DIM3];
    int                 val = 3;
    hsize_t             start[] = {0, 0, 0};
    hsize_t             count[] = {3, 15, 13};
    hsize_t            coord[1][3];    /* Coordinates for point selection */
    hssize_t            nelem;          /* Number of elements           */
    H5S_sel_type        sel_type;       /* Type of selection currently  */
    H5S_class_t         stype;          /* dataspace type               */
    H5D_alloc_time_t    alloc_time;     /* Space allocation time        */
    herr_t        ret;        /* Generic return value            */
    unsigned int        i, j, k;

    /* Output message about test being performed */
    MESSAGE(5, ("Testing Dataspace with zero dimension size\n"));

    /* Initialize the data */
    for(i = 0; i < SPACE1_DIM2; i++)
        for(j = 0; j < SPACE1_DIM3; j++) {
            wdata[i][j] = (int)(i + j);
            rdata[i][j] = 7;
            wdata_short[i][j] = (short)(i + j);
            rdata_short[i][j] = 7;
        }

    for(i = 0; i < SPACE1_DIM1; i++)
        for(j = 0; j < SPACE1_DIM2; j++)
            for(k = 0; k < SPACE1_DIM3; k++)
                wdata_real[i][j][k] = (int)(i + j + k);

    /* Test with different space allocation times */
    for(alloc_time = H5D_ALLOC_TIME_EARLY; alloc_time <= H5D_ALLOC_TIME_INCR; alloc_time++) {

        /* Make sure we can create the space with the dimension size 0 (starting from v1.8.7).
         * The dimension doesn't need to be unlimited. */
        dims1[0] = 0;
        dims1[1] = SPACE1_DIM2;
        dims1[2] = SPACE1_DIM3;
        sid1 = H5Screate_simple(SPACE1_RANK, dims1, NULL);
        CHECK(sid1, FAIL, "H5Screate_simple");

        ret = H5Sclose(sid1);
        CHECK(ret, FAIL, "H5Sclose");

        sid1 = H5Screate(H5S_SIMPLE);
        CHECK(sid1, FAIL, "H5Screate");

        /* SID1 has the 1st dimension size as zero.  The maximal dimension will be
         * the same as the dimension because of the NULL passed in. */
        ret = H5Sset_extent_simple(sid1,SPACE1_RANK,dims1,NULL);
        CHECK(ret, FAIL, "H5Sset_extent_simple");

        /* Check that the dataspace actually has 0 elements */
        nelem = H5Sget_simple_extent_npoints(sid1);
        VERIFY(nelem, 0, "H5Sget_simple_extent_npoints");

        /* Check that the dataspace was created with an "all" selection */
        sel_type = H5Sget_select_type(sid1);
        VERIFY(sel_type, H5S_SEL_ALL, "H5Sget_select_type");

        /* Check that the dataspace has 0 elements selected */
        nelem = H5Sget_select_npoints(sid1);
        VERIFY(nelem, 0, "H5Sget_select_npoints");

        /* Change to "none" selection */
        ret = H5Sselect_none(sid1);
        CHECK(ret, FAIL, "H5Sselect_none");

        /* Check that the dataspace has 0 elements selected */
        nelem = H5Sget_select_npoints(sid1);
        VERIFY(nelem, 0, "H5Sget_select_npoints");

        /* Try to select all dataspace */
        ret = H5Sselect_all(sid1);
        CHECK(ret, FAIL, "H5Sselect_all");

        /* Check that the dataspace has 0 elements selected */
        nelem = H5Sget_select_npoints(sid1);
        VERIFY(nelem, 0, "H5Sget_select_npoints");

        /* Create the dataspace for chunked dataset with the first dimension size as zero.
         * The maximal dimensions are bigger than the dimensions for later expansion. */
        sid_chunk = H5Screate_simple(SPACE1_RANK, dims1, max_dims);
        CHECK(sid_chunk, FAIL, "H5Screate_simple");

        /*============================================
         * Make sure we can use 0-dimension to create
         * contiguous, chunked, compact, and external
         * datasets, and also attribute.
         *============================================
         */
        fid1 = H5Fcreate(ZEROFILE, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
        CHECK(fid1, FAIL, "H5Fcreate");

        /*===================== Contiguous dataset =======================*/
        plist_id = H5Pcreate(H5P_DATASET_CREATE);
        CHECK(plist_id, FAIL, "H5Pcreate");

        ret = H5Pset_alloc_time(plist_id, alloc_time);
        CHECK(ret, FAIL, "H5Pset_alloc_time");

        dset1 = H5Dcreate2(fid1, BASICDATASET, H5T_NATIVE_INT, sid1, H5P_DEFAULT, plist_id, H5P_DEFAULT);
        CHECK(dset1, FAIL, "H5Dcreate2");

        ret = H5Pclose(plist_id);
        CHECK(ret, FAIL, "H5Pclose");

        /* Write "nothing" to the dataset */
        ret = H5Dwrite(dset1, H5T_NATIVE_INT, sid1, H5S_ALL, H5P_DEFAULT, wdata);
        CHECK(ret, FAIL, "H5Dwrite");

        ret = H5Fflush(fid1, H5F_SCOPE_GLOBAL);
        CHECK(ret, FAIL, "H5Fflush");

        /* Try reading from the dataset (make certain our buffer is unmodified) */
        ret = H5Dread(dset1, H5T_NATIVE_INT, sid1, H5S_ALL, H5P_DEFAULT, rdata);
        CHECK(ret, FAIL, "H5Dread");

        /* Check results */
        for(i=0; i<SPACE1_DIM2; i++) {
            for(j=0; j<SPACE1_DIM3; j++) {
                if(rdata[i][j] != 7) {
                    H5_FAILED();
                    HDprintf("element [%d][%d] is %d but should have been 7\n",
                           i, j, rdata[i][j]);
                }
            }
        }

        /* Write "nothing" to the dataset (with type conversion :-) */
        ret = H5Dwrite(dset1, H5T_NATIVE_SHORT, H5S_ALL, H5S_ALL, H5P_DEFAULT, wdata_short);
        CHECK(ret, FAIL, "H5Dwrite");

        ret = H5Fflush(fid1, H5F_SCOPE_GLOBAL);
        CHECK(ret, FAIL, "H5Fflush");

        /* Try reading from the dataset (make certain our buffer is unmodified) */
        ret = H5Dread(dset1, H5T_NATIVE_INT, sid1, H5S_ALL, H5P_DEFAULT, rdata_short);
        CHECK(ret, FAIL, "H5Dread");

        /* Check results */
        for(i=0; i<SPACE1_DIM2; i++) {
            for(j=0; j<SPACE1_DIM3; j++) {
                if(rdata_short[i][j] != 7) {
                    H5_FAILED();
                    HDprintf("element [%d][%d] is %d but should have been 7\n",
                           i, j, rdata_short[i][j]);
                }
            }
        }

        /* Select a hyperslab beyond its current dimension sizes, then try to write
         * the data.  It should fail. */
        ret = H5Sselect_hyperslab(sid1, H5S_SELECT_SET, start, NULL, count, NULL);
        CHECK(ret, FAIL, "H5Sselect_hyperslab");

        H5E_BEGIN_TRY {
            ret = H5Dwrite(dset1, H5T_NATIVE_INT, H5S_ALL, sid1, H5P_DEFAULT, wdata);
        } H5E_END_TRY;
        VERIFY(ret, FAIL, "H5Dwrite");

        /* Change to "none" selection */
        ret = H5Sselect_none(sid1);
        CHECK(ret, FAIL, "H5Sselect_none");

        /* Select a point beyond the dimension size, then try to write the data.
         * It should fail. */
        coord[0][0]=2; coord[0][1]=5; coord[0][2]=3;
        ret = H5Sselect_elements(sid1, H5S_SELECT_SET, (size_t)1, (const hsize_t *)coord);
        CHECK(ret, FAIL, "H5Sselect_elements");

        H5E_BEGIN_TRY {
            ret = H5Dwrite(dset1, H5T_NATIVE_INT, H5S_ALL, sid1, H5P_DEFAULT, &val);
        } H5E_END_TRY;
        VERIFY(ret, FAIL, "H5Dwrite");

        /* Restore the selection to all */
        ret = H5Sselect_all(sid1);
        CHECK(ret, FAIL, "H5Sselect_all");

        ret = H5Dclose(dset1);
        CHECK(ret, FAIL, "H5Dclose");

        /*=================== Chunked dataset ====================*/
        plist_id = H5Pcreate(H5P_DATASET_CREATE);
        CHECK(plist_id, FAIL, "H5Pcreate");

        ret = H5Pset_chunk(plist_id, SPACE1_RANK, chunk_dims);
        CHECK(ret, FAIL, "H5Pset_chunk");

        /* ret = H5Pset_alloc_time(plist_id, alloc_time); */
        /* CHECK(ret, FAIL, "H5Pset_alloc_time"); */

        dset1 = H5Dcreate2(fid1, BASICDATASET1, H5T_NATIVE_INT, sid_chunk, H5P_DEFAULT, plist_id, H5P_DEFAULT);
        CHECK(dset1, FAIL, "H5Dcreate2");

        /* Write "nothing" to the dataset */
        ret = H5Dwrite(dset1, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, wdata);
        CHECK(ret, FAIL, "H5Dwrite");

        ret = H5Fflush(fid1, H5F_SCOPE_GLOBAL);
        CHECK(ret, FAIL, "H5Fflush");

        /* Try reading from the dataset (make certain our buffer is unmodified) */
        ret = H5Dread(dset1, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, rdata);
        CHECK(ret, FAIL, "H5Dread");

        /* Check results */
        for(i=0; i<SPACE1_DIM2; i++)
            for(j=0; j<SPACE1_DIM3; j++) {
                if(rdata[i][j] != 7) {
                    H5_FAILED();
                    HDprintf("element [%d][%d] is %d but should have been 7\n",
                           i, j, rdata[i][j]);
                }
        }

        /* Now extend the dataset to SPACE1_DIM1*SPACE1_DIM2*SPACE1_DIM3 and make sure
         * we can write data to it */
        extend_dims[0] = SPACE1_DIM1;
        ret = H5Dset_extent(dset1, extend_dims);
        CHECK(ret, FAIL, "H5Dset_extent");

        ret = H5Dwrite(dset1, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, wdata_real);
        CHECK(ret, FAIL, "H5Dwrite");

        ret = H5Fflush(fid1, H5F_SCOPE_GLOBAL);
        CHECK(ret, FAIL, "H5Fflush");

        ret = H5Dread(dset1, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, rdata_real);
        CHECK(ret, FAIL, "H5Dread");

        /* Check results */
        for(i=0; i<SPACE1_DIM1; i++) {
            for(j=0; j<SPACE1_DIM2; j++) {
                for(k=0; k<SPACE1_DIM3; k++) {
                    if(rdata_real[i][j][k] != wdata_real[i][j][k]) {
                        H5_FAILED();
                        HDprintf("element [%d][%d][%d] is %d but should have been %d\n",
                           i, j, k, rdata_real[i][j][k], wdata_real[i][j][k]);
                    }
                }
            }
        }

        /* Now shrink the first dimension size of the dataset to 0 and make sure no data is in it */
        extend_dims[0] = 0;
        ret = H5Dset_extent(dset1, extend_dims);
        CHECK(ret, FAIL, "H5Dset_extent");

        ret = H5Fflush(fid1, H5F_SCOPE_GLOBAL);
        CHECK(ret, FAIL, "H5Fflush");

        /* Try reading from the dataset (make certain our buffer is unmodified) */
        ret = H5Dread(dset1, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, rdata);
        CHECK(ret, FAIL, "H5Dread");

        /* Check results */
        for(i=0; i<SPACE1_DIM2; i++)
            for(j=0; j<SPACE1_DIM3; j++) {
                if(rdata[i][j] != 7) {
                    H5_FAILED();
                    HDprintf("element [%d][%d] is %d but should have been 7\n",
                           i, j, rdata[i][j]);
                }
        }

        /* Now extend the first dimension size of the dataset to SPACE1_DIM1*3 past the maximal size.
         * It is supposed to fail. */
        extend_dims[0] = SPACE1_DIM1*3;
        H5E_BEGIN_TRY {
            ret = H5Dset_extent(dset1, extend_dims);
        } H5E_END_TRY;
        VERIFY(ret, FAIL, "H5Dset_extent");

        ret = H5Pclose(plist_id);
        CHECK(ret, FAIL, "H5Pclose");

        ret = H5Dclose(dset1);
        CHECK(ret, FAIL, "H5Dclose");

        /*=================== Compact dataset =====================*/
        plist_id = H5Pcreate(H5P_DATASET_CREATE);
        CHECK(plist_id, FAIL, "H5Pcreate");

        ret = H5Pset_layout(plist_id, H5D_COMPACT);
        CHECK(ret, FAIL, "H5Pset_layout");

        /* Don't set the allocation time for compact storage datasets (must be early) */

        dset1 = H5Dcreate2(fid1, BASICDATASET2, H5T_NATIVE_INT, sid1, H5P_DEFAULT, plist_id, H5P_DEFAULT);
        CHECK(dset1, FAIL, "H5Dcreate2");

        /* Write "nothing" to the dataset */
        ret = H5Dwrite(dset1, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, wdata);
        CHECK(ret, FAIL, "H5Dwrite");

        ret = H5Fflush(fid1, H5F_SCOPE_GLOBAL);
        CHECK(ret, FAIL, "H5Fflush");

        /* Try reading from the dataset (make certain our buffer is unmodified) */
        ret = H5Dread(dset1, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, rdata);
        CHECK(ret, FAIL, "H5Dread");

        /* Check results */
        for(i=0; i<SPACE1_DIM2; i++)
            for(j=0; j<SPACE1_DIM3; j++) {
                if(rdata[i][j] != 7) {
                    H5_FAILED();
                    HDprintf("element [%d][%d] is %d but should have been 7\n",
                           i, j, rdata[i][j]);
                }
        }

        ret = H5Pclose(plist_id);
        CHECK(ret, FAIL, "H5Pclose");

        ret = H5Dclose(dset1);
        CHECK(ret, FAIL, "H5Dclose");

        /*=========== Contiguous dataset with external storage ============*/
        plist_id = H5Pcreate(H5P_DATASET_CREATE);
        CHECK(plist_id, FAIL, "H5Pcreate");

        /* Change the DCPL for contiguous layout with external storage.  The size of the reserved
         * space in the external file is the size of the dataset (zero because one dimension size is zero).
         * There's no need to clean up the external file since the library doesn't create it
         * until the data is written to it. */
        ret = H5Pset_external(plist_id, EXTFILE_NAME, (off_t)0, (hsize_t)0);
        CHECK(ret, FAIL, "H5Pset_external");

        ret = H5Pset_alloc_time(plist_id, alloc_time);
        CHECK(ret, FAIL, "H5Pset_alloc_time");

        dset1 = H5Dcreate2(fid1, BASICDATASET3, H5T_NATIVE_INT, sid1, H5P_DEFAULT, plist_id, H5P_DEFAULT);
        CHECK(dset1, FAIL, "H5Dcreate2");

        /* Write "nothing" to the dataset */
        ret = H5Dwrite(dset1, H5T_NATIVE_INT, sid1, H5S_ALL, H5P_DEFAULT, wdata);
        CHECK(ret, FAIL, "H5Dwrite");

        ret = H5Fflush(fid1, H5F_SCOPE_GLOBAL);
        CHECK(ret, FAIL, "H5Fflush");

        /* Try reading from the dataset (make certain our buffer is unmodified) */
        ret = H5Dread(dset1, H5T_NATIVE_INT, sid1, H5S_ALL, H5P_DEFAULT, rdata);
        CHECK(ret, FAIL, "H5Dread");

        /* Check results */
        for(i=0; i<SPACE1_DIM2; i++) {
            for(j=0; j<SPACE1_DIM3; j++) {
                if(rdata[i][j] != 7) {
                    H5_FAILED();
                    HDprintf("element [%d][%d] is %d but should have been 7\n",
                           i, j, rdata[i][j]);
                }
            }
        }

        ret = H5Pclose(plist_id);
        CHECK(ret, FAIL, "H5Pclose");

        ret = H5Dclose(dset1);
        CHECK(ret, FAIL, "H5Dclose");

        /*=============== Create an attribute for the file ================*/
        attr = H5Acreate2(fid1, NULLATTR, H5T_NATIVE_INT, sid1, H5P_DEFAULT, H5P_DEFAULT);
        CHECK(attr, FAIL, "H5Acreate2");

        /* Write "nothing" to the attribute */
        ret = H5Awrite(attr, H5T_NATIVE_INT, wdata);
        CHECK(ret, FAIL, "H5Awrite");

        ret = H5Fflush(fid1, H5F_SCOPE_GLOBAL);
        CHECK(ret, FAIL, "H5Fflush");

        /* Try reading from the attribute (make certain our buffer is unmodified) */
        ret = H5Aread(attr, H5T_NATIVE_INT, rdata);
        CHECK(ret, FAIL, "H5Aread");

        /* Check results */
        for(i=0; i<SPACE1_DIM2; i++) {
            for(j=0; j<SPACE1_DIM3; j++) {
                if(rdata[i][j] != 7) {
                    H5_FAILED();
                    HDprintf("element [%d][%d] is %d but should have been 7\n",
                           i, j, rdata[i][j]);
                }
            }
        }

        /* Write "nothing" to the attribute (with type conversion :-) */
        ret = H5Awrite(attr, H5T_NATIVE_SHORT, wdata_short);
        CHECK(ret, FAIL, "H5Awrite");

        ret = H5Fflush(fid1, H5F_SCOPE_GLOBAL);
        CHECK(ret, FAIL, "H5Fflush");

        /* Try reading from the attribute (with type conversion :-) (make certain our buffer is unmodified) */
        ret = H5Aread(attr, H5T_NATIVE_SHORT, rdata_short);
        CHECK(ret, FAIL, "H5Aread");

        /* Check results */
        for(i=0; i<SPACE1_DIM2; i++) {
            for(j=0; j<SPACE1_DIM3; j++) {
                if(rdata_short[i][j] != 7) {
                    H5_FAILED();
                    HDprintf("element [%d][%d] is %d but should have been 7\n",
                           i, j, rdata_short[i][j]);
                }
            }
        }

        /* Close attribute */
        ret = H5Aclose(attr);
        CHECK(ret, FAIL, "H5Aclose");

        /*===============================================================
         * Extend the dimension to make it a normal dataspace (3x15x13).
         * Verify that data can be written to and read from the chunked
         * dataset now.
         *===============================================================
         */
        dims1[0]=SPACE1_DIM1;
        ret = H5Sset_extent_simple(sid_chunk,SPACE1_RANK,dims1,max_dims);
        CHECK(ret, FAIL, "H5Sset_extent_simple");

        nelem = H5Sget_simple_extent_npoints(sid_chunk);
        CHECK(nelem, FAIL, "H5Sget_simple_extent_npoints");
        VERIFY(nelem, SPACE1_DIM1 * SPACE1_DIM2 * SPACE1_DIM3,
               "H5Sget_simple_extent_npoints");

        rank = H5Sget_simple_extent_ndims(sid_chunk);
        CHECK(rank, FAIL, "H5Sget_simple_extent_ndims");
        VERIFY(rank, SPACE1_RANK, "H5Sget_simple_extent_ndims");

        rank = H5Sget_simple_extent_dims(sid_chunk, tdims, NULL);
        CHECK(rank, FAIL, "H5Sget_simple_extent_dims");
        VERIFY(HDmemcmp(tdims, dims1, SPACE1_RANK * sizeof(hsize_t)), 0,
               "H5Sget_simple_extent_dims");

        /* Set it to chunked dataset */
        plist_id = H5Pcreate(H5P_DATASET_CREATE);
        CHECK(plist_id, FAIL, "H5Pcreate");

        ret = H5Pset_chunk(plist_id, SPACE1_RANK, chunk_dims);
        CHECK(ret, FAIL, "H5Pset_chunk");

        ret = H5Pset_alloc_time(plist_id, alloc_time);
        CHECK(ret, FAIL, "H5Pset_alloc_time");

        dset1 = H5Dcreate2(fid1, BASICDATASET4, H5T_NATIVE_INT, sid_chunk, H5P_DEFAULT, plist_id, H5P_DEFAULT);
        CHECK(dset1, FAIL, "H5Dcreate2");

        ret = H5Dwrite(dset1, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, wdata_real);
        CHECK(ret, FAIL, "H5Dwrite");

        ret = H5Fflush(fid1, H5F_SCOPE_GLOBAL);
        CHECK(ret, FAIL, "H5Fflush");

        ret = H5Dread(dset1, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, rdata_real);
        CHECK(ret, FAIL, "H5Dread");

        /* Check results */
        for(i=0; i<SPACE1_DIM1; i++) {
            for(j=0; j<SPACE1_DIM2; j++) {
                for(k=0; k<SPACE1_DIM3; k++) {
                    if(rdata_real[i][j][k] != wdata_real[i][j][k]) {
                        H5_FAILED();
                        HDprintf("element [%d][%d][%d] is %d but should have been %d\n",
                           i, j, k, rdata_real[i][j][k], wdata_real[i][j][k]);
                    }
                }
            }
        }

        ret = H5Pclose(plist_id);
        CHECK(ret, FAIL, "H5Pclose");

        ret = H5Dclose(dset1);
        CHECK(ret, FAIL, "H5Dclose");

        /* Change the dimensions to make them zero size again (0x0x0).  Verify that
         * no element is in the dataspace. */
        dims1[0]=dims1[1]=dims1[2]=0;
        ret = H5Sset_extent_simple(sid_chunk,SPACE1_RANK,dims1,NULL);
        CHECK(ret, FAIL, "H5Sset_extent_simple");

        /* Check that the dataspace actually has 0 elements */
        nelem = H5Sget_simple_extent_npoints(sid_chunk);
        VERIFY(nelem, 0, "H5Sget_simple_extent_npoints");

        /* Check that the dataspace was created with an "all" selection */
        sel_type = H5Sget_select_type(sid_chunk);
        VERIFY(sel_type, H5S_SEL_ALL, "H5Sget_select_type");

        /* Check that the dataspace has 0 elements selected */
        nelem = H5Sget_select_npoints(sid_chunk);
        VERIFY(nelem, 0, "H5Sget_select_npoints");

        /* Change to "none" selection */
        ret = H5Sselect_none(sid_chunk);
        CHECK(ret, FAIL, "H5Sselect_none");

        /* Check that the dataspace has 0 elements selected */
        nelem = H5Sget_select_npoints(sid_chunk);
        VERIFY(nelem, 0, "H5Sget_select_npoints");

        ret = H5Sclose(sid_chunk);
        CHECK(ret, FAIL, "H5Sclose");

        ret = H5Sclose(sid1);
        CHECK(ret, FAIL, "H5Sclose");

        ret = H5Fclose(fid1);
        CHECK(ret, FAIL, "H5Fclose");

        /*============================================
         *  Reopen the file to check the dataspace
         *============================================
         */
        fid1 = H5Fopen(ZEROFILE, H5F_ACC_RDONLY, H5P_DEFAULT);
        CHECK(fid1, FAIL, "H5Fopen");

        /* Reopen the chunked dataset */
        dset1 = H5Dopen2(fid1, BASICDATASET1, H5P_DEFAULT);
        CHECK(dset1, FAIL, "H5Dopen2");

        /* Get the space of the dataset and querry it */
        sid1 = H5Dget_space(dset1);
        CHECK(sid1, FAIL, "H5Dget_space");

        /* Verify the class type of dataspace */
        stype = H5Sget_simple_extent_type(sid1);
        VERIFY(stype, H5S_SIMPLE, "H5Sget_simple_extent_type");

        /* Verify there is zero element in the dataspace */
        nelem = H5Sget_simple_extent_npoints(sid1);
        VERIFY(nelem, 0, "H5Sget_simple_extent_npoints");

        /* Verify the dimension sizes are correct */
        rank = H5Sget_simple_extent_dims(sid1, tdims, NULL);
        CHECK(rank, FAIL, "H5Sget_simple_extent_dims");
        VERIFY(tdims[0], 0, "H5Sget_simple_extent_dims");
        VERIFY(tdims[1], SPACE1_DIM2, "H5Sget_simple_extent_dims");
        VERIFY(tdims[2], SPACE1_DIM3, "H5Sget_simple_extent_dims");

        /* Try reading from the dataset (make certain our buffer is unmodified) */
        ret = H5Dread(dset1, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, rdata);
        CHECK(ret, FAIL, "H5Dread");

        /* Check results */
        for(i=0; i<SPACE1_DIM2; i++) {
            for(j=0; j<SPACE1_DIM3; j++) {
                if(rdata[i][j] != 7) {
                    H5_FAILED();
                    HDprintf("element [%d][%d] is %d but should have been 7\n",
                           i, j, rdata[i][j]);
                }
            }
        }

        /* Close the dataset and its dataspace */
        ret = H5Dclose(dset1);
        CHECK(ret, FAIL, "H5Dclose");

        ret = H5Sclose(sid1);
        CHECK(ret, FAIL, "H5Sclose");

        /* Open the attribute for the file */
        attr = H5Aopen(fid1, NULLATTR, H5P_DEFAULT);
        CHECK(attr, FAIL, "H5Aopen");

        /* Get the space of the dataset */
        attr_sid = H5Aget_space(attr);
        CHECK(attr_sid, FAIL, "H5Aget_space");

        /* Verify the class type of dataspace */
        stype = H5Sget_simple_extent_type(attr_sid);
        VERIFY(stype, H5S_SIMPLE, "H5Sget_simple_extent_type");

        /* Verify there is zero element in the dataspace */
        nelem = H5Sget_simple_extent_npoints(attr_sid);
        VERIFY(nelem, 0, "H5Sget_simple_extent_npoints");

        /* Try reading from the attribute (make certain our buffer is unmodified) */
        ret = H5Aread(attr, H5T_NATIVE_SHORT, rdata_short);
        CHECK(ret, FAIL, "H5Aread");

        /* Check results */
        for(i=0; i<SPACE1_DIM2; i++) {
            for(j=0; j<SPACE1_DIM3; j++) {
                if(rdata_short[i][j] != 7) {
                    H5_FAILED();
                    HDprintf("element [%d][%d] is %d but should have been 7\n",
                           i, j, rdata_short[i][j]);
                }
            }
        }

        /* Close attribute */
        ret=H5Aclose(attr);
        CHECK(ret, FAIL, "H5Aclose");

        /* Close the dataspace */
        ret = H5Sclose(attr_sid);
        CHECK(ret, FAIL, "H5Sclose");

        ret = H5Fclose(fid1);
        CHECK(ret, FAIL, "H5Fclose");
    } /* end for */
} /* test_h5s_zero_dim() */


/****************************************************************
**
**  test_h5s_encode(): Test H5S (dataspace) encoding and decoding.
**
**  Note: See "RFC: H5Sencode/H5Sdecode Format Change".
**
****************************************************************/
static void
test_h5s_encode(H5F_libver_t low, H5F_libver_t high)
{
    hid_t        sid1, sid2, sid3;    /* Dataspace ID        */
    hid_t               decoded_sid1, decoded_sid2, decoded_sid3;
    int                rank;        /* Logical rank of dataspace    */
    hid_t         fapl = -1;        /* File access property list ID */
    hsize_t        dims1[] = {SPACE1_DIM1, SPACE1_DIM2, SPACE1_DIM3};
    size_t              sbuf_size=0, null_size=0, scalar_size=0;
    unsigned char       *sbuf=NULL, *null_sbuf=NULL, *scalar_buf=NULL;
    hsize_t        tdims[4];    /* Dimension array to test with */
    hssize_t        n;         /* Number of dataspace elements */
    hsize_t             start[] = {0, 0, 0};
    hsize_t             stride[] = {2, 5, 3};
    hsize_t             count[] = {2, 2, 2};
    hsize_t             block[] = {1, 3, 1};
    H5S_sel_type        sel_type;
    H5S_class_t         space_type;
    hssize_t            nblocks;
    hid_t        ret_id;        /* Generic hid_t return value    */
    herr_t        ret;        /* Generic return value        */

    /* Output message about test being performed */
    MESSAGE(5, ("Testing Dataspace Encoding and Decoding\n"));

    /*-------------------------------------------------------------------------
     * Test encoding and decoding of simple dataspace and hyperslab selection.
     *-------------------------------------------------------------------------
     */
    
    /* Create the file access property list */
    fapl = H5Pcreate(H5P_FILE_ACCESS);
    CHECK(fapl, FAIL, "H5Pcreate");

    /* Set low/high bounds in the fapl */
    ret = H5Pset_libver_bounds(fapl, low, high);
    CHECK(ret, FAIL, "H5Pset_libver_bounds");

    /* Create the dataspace */
    sid1 = H5Screate_simple(SPACE1_RANK, dims1, NULL);
    CHECK(sid1, FAIL, "H5Screate_simple");

    /* Set the hyperslab selection */
    ret = H5Sselect_hyperslab(sid1, H5S_SELECT_SET, start, stride, count, block);
    CHECK(ret, FAIL, "H5Sselect_hyperslab");

    /* Encode simple dataspace in a buffer with the fapl setting */
    ret = H5Sencode2(sid1, NULL, &sbuf_size, fapl);
    CHECK(ret, FAIL, "H5Sencode2");

    if(sbuf_size>0) {
        sbuf = (unsigned char*)HDcalloc((size_t)1, sbuf_size);
        CHECK(sbuf, NULL, "HDcalloc");
    }

    /* Try decoding bogus buffer */
    H5E_BEGIN_TRY {
        ret_id = H5Sdecode(sbuf);
    } H5E_END_TRY;
    VERIFY(ret_id, FAIL, "H5Sdecode");

    /* Encode the simple dataspace in a buffer with the fapl setting */
    ret = H5Sencode2(sid1, sbuf, &sbuf_size, fapl);
    CHECK(ret, FAIL, "H5Sencode");

    /* Decode from the dataspace buffer and return an object handle */
    decoded_sid1=H5Sdecode(sbuf);
    CHECK(decoded_sid1, FAIL, "H5Sdecode");

    /* Verify the decoded dataspace */
    n = H5Sget_simple_extent_npoints(decoded_sid1);
    CHECK(n, FAIL, "H5Sget_simple_extent_npoints");
    VERIFY(n, SPACE1_DIM1 * SPACE1_DIM2 * SPACE1_DIM3,
    "H5Sget_simple_extent_npoints");

    /* Retrieve and verify the dataspace rank */
    rank = H5Sget_simple_extent_ndims(decoded_sid1);
    CHECK(rank, FAIL, "H5Sget_simple_extent_ndims");
    VERIFY(rank, SPACE1_RANK, "H5Sget_simple_extent_ndims");

     /* Retrieve and verify the dataspace dimensions */
    rank = H5Sget_simple_extent_dims(decoded_sid1, tdims, NULL);
    CHECK(rank, FAIL, "H5Sget_simple_extent_dims");
    VERIFY(HDmemcmp(tdims, dims1, SPACE1_RANK * sizeof(hsize_t)), 0,
    "H5Sget_simple_extent_dims");

    /* Verify the type of dataspace selection */
    sel_type = H5Sget_select_type(decoded_sid1);
    VERIFY(sel_type, H5S_SEL_HYPERSLABS, "H5Sget_select_type");

    /* Verify the number of hyperslab blocks */
    nblocks = H5Sget_select_hyper_nblocks(decoded_sid1);
    VERIFY(nblocks, 2*2*2, "H5Sget_select_hyper_nblocks");

    /* Close the dataspaces */
    ret = H5Sclose(sid1);
    CHECK(ret, FAIL, "H5Sclose");

    ret = H5Sclose(decoded_sid1);
    CHECK(ret, FAIL, "H5Sclose");

    /*-------------------------------------------------------------------------
     * Test encoding and decoding of null dataspace.
     *-------------------------------------------------------------------------
     */
    sid2 = H5Screate(H5S_NULL);
    CHECK(sid2, FAIL, "H5Screate");

    /* Encode null dataspace in a buffer */
    ret = H5Sencode2(sid2, NULL, &null_size, fapl);
    CHECK(ret, FAIL, "H5Sencode");

    if(null_size>0) {
        null_sbuf = (unsigned char*)HDcalloc((size_t)1, null_size);
        CHECK(null_sbuf, NULL, "HDcalloc");
    }

    /* Encode the null dataspace in the buffer */
    ret = H5Sencode2(sid2, null_sbuf, &null_size, fapl);
    CHECK(ret, FAIL, "H5Sencode2");

    /* Decode from the dataspace buffer and return an object handle */
    decoded_sid2=H5Sdecode(null_sbuf);
    CHECK(decoded_sid2, FAIL, "H5Sdecode");

    /* Verify the decoded dataspace type */
    space_type = H5Sget_simple_extent_type(decoded_sid2);
    VERIFY(space_type, H5S_NULL, "H5Sget_simple_extent_type");

    /* Close the dataspaces */
    ret = H5Sclose(sid2);
    CHECK(ret, FAIL, "H5Sclose");

    ret = H5Sclose(decoded_sid2);
    CHECK(ret, FAIL, "H5Sclose");

    /*-------------------------------------------------------------------------
     * Test encoding and decoding of scalar dataspace.
     *-------------------------------------------------------------------------
     */
    /* Create scalar dataspace */
    sid3 = H5Screate(H5S_SCALAR);
    CHECK(sid3, FAIL, "H5Screate_simple");

    /* Encode scalar dataspace in a buffer */
    ret = H5Sencode2(sid3, NULL, &scalar_size, fapl);
    CHECK(ret, FAIL, "H5Sencode");

    if(scalar_size>0) {
        scalar_buf = (unsigned char*)HDcalloc((size_t)1, scalar_size);
        CHECK(scalar_buf, NULL, "HDcalloc");
    }

    /* Encode the scalar dataspace in the buffer */
    ret = H5Sencode2(sid3, scalar_buf, &scalar_size, fapl);
    CHECK(ret, FAIL, "H5Sencode2");

    /* Decode from the dataspace buffer and return an object handle */
    decoded_sid3=H5Sdecode(scalar_buf);
    CHECK(decoded_sid3, FAIL, "H5Sdecode");

    /* Verify extent type */
    space_type = H5Sget_simple_extent_type(decoded_sid3);
    VERIFY(space_type, H5S_SCALAR, "H5Sget_simple_extent_type");

    /* Verify decoded dataspace */
    n = H5Sget_simple_extent_npoints(decoded_sid3);
    CHECK(n, FAIL, "H5Sget_simple_extent_npoints");
    VERIFY(n, 1, "H5Sget_simple_extent_npoints");

    /* Retrieve and verify the dataspace rank */
    rank = H5Sget_simple_extent_ndims(decoded_sid3);
    CHECK(rank, FAIL, "H5Sget_simple_extent_ndims");
    VERIFY(rank, 0, "H5Sget_simple_extent_ndims");

    /* Close the dataspaces */
    ret = H5Sclose(sid3);
    CHECK(ret, FAIL, "H5Sclose");

    ret = H5Sclose(decoded_sid3);
    CHECK(ret, FAIL, "H5Sclose");

     /* Close the file access property list */
    ret = H5Pclose(fapl);
    CHECK(ret, FAIL, "H5Pclose");

    /* Release resources */
    if(sbuf)
        HDfree(sbuf);
    if(null_sbuf)
        HDfree(null_sbuf);
    if(scalar_buf)
        HDfree(scalar_buf);
} /* test_h5s_encode() */

#ifndef H5_NO_DEPRECATED_SYMBOLS

/****************************************************************
**
**  test_h5s_encode(): Test H5S (dataspace) encoding and decoding.
**
****************************************************************/
static void
test_h5s_encode1(void)
{
    hid_t sid1, sid2, sid3; /* Dataspace ID */
    hid_t decoded_sid1, decoded_sid2, decoded_sid3;
    int rank;               /* Logical rank of dataspace */
    hsize_t dims1[] = {SPACE1_DIM1, SPACE1_DIM2, SPACE1_DIM3};
    size_t sbuf_size=0, null_size=0, scalar_size=0;
    unsigned char *sbuf=NULL, *null_sbuf=NULL, *scalar_buf=NULL;
    hsize_t tdims[4];       /* Dimension array to test with */
    hssize_t n;             /* Number of dataspace elements */
    hsize_t start[] = {0, 0, 0};
    hsize_t stride[] = {2, 5, 3};
    hsize_t count[] = {2, 2, 2};
    hsize_t block[] = {1, 3, 1};
    H5S_sel_type sel_type;
    H5S_class_t space_type;
    hssize_t nblocks;
    hid_t ret_id;           /* Generic hid_t return value   */
    herr_t ret;             /* Generic return value     */

    /* Output message about test being performed */
    MESSAGE(5, ("Testing Dataspace Encoding (H5Sencode1) and Decoding\n"));

    /*-------------------------------------------------------------------------
     * Test encoding and decoding of simple dataspace and hyperslab selection.
     *-------------------------------------------------------------------------
     */
    /* Create the dataspace */
    sid1 = H5Screate_simple(SPACE1_RANK, dims1, NULL);
    CHECK(sid1, FAIL, "H5Screate_simple");

    /* Set the hyperslab selection */
    ret = H5Sselect_hyperslab(sid1, H5S_SELECT_SET, start, stride, count, block);
    CHECK(ret, FAIL, "H5Sselect_hyperslab");

    /* Encode simple dataspace in a buffer with the fapl setting */
    ret = H5Sencode1(sid1, NULL, &sbuf_size);
    CHECK(ret, FAIL, "H5Sencode2");

    if(sbuf_size>0) {
        sbuf = (unsigned char*)HDcalloc((size_t)1, sbuf_size);
        CHECK(sbuf, NULL, "HDcalloc");
    }

    /* Try decoding bogus buffer */
    H5E_BEGIN_TRY {
        ret_id = H5Sdecode(sbuf);
    } H5E_END_TRY;
    VERIFY(ret_id, FAIL, "H5Sdecode");

    /* Encode the simple dataspace in a buffer */
    ret = H5Sencode1(sid1, sbuf, &sbuf_size);
    CHECK(ret, FAIL, "H5Sencode");

    /* Decode from the dataspace buffer and return an object handle */
    decoded_sid1=H5Sdecode(sbuf);
    CHECK(decoded_sid1, FAIL, "H5Sdecode");

    /* Verify the decoded dataspace */
    n = H5Sget_simple_extent_npoints(decoded_sid1);
    CHECK(n, FAIL, "H5Sget_simple_extent_npoints");
    VERIFY(n, SPACE1_DIM1 * SPACE1_DIM2 * SPACE1_DIM3,
    "H5Sget_simple_extent_npoints");

    /* Retrieve and verify the dataspace rank */
    rank = H5Sget_simple_extent_ndims(decoded_sid1);
    CHECK(rank, FAIL, "H5Sget_simple_extent_ndims");
    VERIFY(rank, SPACE1_RANK, "H5Sget_simple_extent_ndims");

     /* Retrieve and verify the dataspace dimensions */
    rank = H5Sget_simple_extent_dims(decoded_sid1, tdims, NULL);
    CHECK(rank, FAIL, "H5Sget_simple_extent_dims");
    VERIFY(HDmemcmp(tdims, dims1, SPACE1_RANK * sizeof(hsize_t)), 0,
    "H5Sget_simple_extent_dims");

    /* Verify the type of dataspace selection */
    sel_type = H5Sget_select_type(decoded_sid1);
    VERIFY(sel_type, H5S_SEL_HYPERSLABS, "H5Sget_select_type");

    /* Verify the number of hyperslab blocks */
    nblocks = H5Sget_select_hyper_nblocks(decoded_sid1);
    VERIFY(nblocks, 2*2*2, "H5Sget_select_hyper_nblocks");

    /* Close the dataspaces */
    ret = H5Sclose(sid1);
    CHECK(ret, FAIL, "H5Sclose");

    ret = H5Sclose(decoded_sid1);
    CHECK(ret, FAIL, "H5Sclose");

    /*-------------------------------------------------------------------------
     * Test encoding and decoding of null dataspace.
     *-------------------------------------------------------------------------
     */
    sid2 = H5Screate(H5S_NULL);
    CHECK(sid2, FAIL, "H5Screate");

    /* Encode null dataspace in a buffer */
    ret = H5Sencode1(sid2, NULL, &null_size);
    CHECK(ret, FAIL, "H5Sencode");

    if(null_size>0) {
        null_sbuf = (unsigned char*)HDcalloc((size_t)1, null_size);
        CHECK(null_sbuf, NULL, "HDcalloc");
    }

    /* Encode the null dataspace in the buffer */
    ret = H5Sencode1(sid2, null_sbuf, &null_size);
    CHECK(ret, FAIL, "H5Sencode2");

    /* Decode from the dataspace buffer and return an object handle */
    decoded_sid2=H5Sdecode(null_sbuf);
    CHECK(decoded_sid2, FAIL, "H5Sdecode");

    /* Verify the decoded dataspace type */
    space_type = H5Sget_simple_extent_type(decoded_sid2);
    VERIFY(space_type, H5S_NULL, "H5Sget_simple_extent_type");

    /* Close the dataspaces */
    ret = H5Sclose(sid2);
    CHECK(ret, FAIL, "H5Sclose");

    ret = H5Sclose(decoded_sid2);
    CHECK(ret, FAIL, "H5Sclose");

    /*-------------------------------------------------------------------------
     * Test encoding and decoding of scalar dataspace.
     *-------------------------------------------------------------------------
     */
    /* Create scalar dataspace */
    sid3 = H5Screate(H5S_SCALAR);
    CHECK(sid3, FAIL, "H5Screate");

    /* Encode scalar dataspace in a buffer */
    ret = H5Sencode1(sid3, NULL, &scalar_size);
    CHECK(ret, FAIL, "H5Sencode");

    if(scalar_size>0) {
        scalar_buf = (unsigned char*)HDcalloc((size_t)1, scalar_size);
        CHECK(scalar_buf, NULL, "HDcalloc");
    }

    /* Encode the scalar dataspace in the buffer */
    ret = H5Sencode1(sid3, scalar_buf, &scalar_size);
    CHECK(ret, FAIL, "H5Sencode2");

    /* Decode from the dataspace buffer and return an object handle */
    decoded_sid3=H5Sdecode(scalar_buf);
    CHECK(decoded_sid3, FAIL, "H5Sdecode");

    /* Verify extent type */
    space_type = H5Sget_simple_extent_type(decoded_sid3);
    VERIFY(space_type, H5S_SCALAR, "H5Sget_simple_extent_type");

    /* Verify decoded dataspace */
    n = H5Sget_simple_extent_npoints(decoded_sid3);
    CHECK(n, FAIL, "H5Sget_simple_extent_npoints");
    VERIFY(n, 1, "H5Sget_simple_extent_npoints");

    /* Retrieve and verify the dataspace rank */
    rank = H5Sget_simple_extent_ndims(decoded_sid3);
    CHECK(rank, FAIL, "H5Sget_simple_extent_ndims");
    VERIFY(rank, 0, "H5Sget_simple_extent_ndims");

    /* Close the dataspaces */
    ret = H5Sclose(sid3);
    CHECK(ret, FAIL, "H5Sclose");

    ret = H5Sclose(decoded_sid3);
    CHECK(ret, FAIL, "H5Sclose");

    /* Release resources */
    if(sbuf)
        HDfree(sbuf);
    if(null_sbuf)
        HDfree(null_sbuf);
    if(scalar_buf)
        HDfree(scalar_buf);
} /* test_h5s_encode1() */

#endif /* H5_NO_DEPRECATED_SYMBOLS */


/****************************************************************
**
**  test_h5s_check_encoding(): 
**      This is the helper routine to verify that H5Sencode2()
**      works as specified in the RFC for the library format setting
**      in the file access property list.
**      See "RFC: H5Sencode/H5Sdeocde Format Change".
**
**      This routine is used by:
**          test_h5s_encode_regular_hyper()
**          test_h5s_encode_irregular_hyper()
**          test_h5s_encode_points()
**
****************************************************************/
static herr_t
test_h5s_check_encoding(hid_t in_fapl, hid_t in_sid, 
    uint32_t expected_version, uint8_t expected_enc_size, hbool_t expected_to_fail)
{
    char *buf = NULL;       /* Pointer to the encoded buffer */
    size_t buf_size;        /* Size of the encoded buffer */
    hid_t d_sid = -1;       /* The decoded dataspace ID */
    htri_t check;
    hsize_t in_low_bounds[1];   /* The low bounds for the selection for in_sid */
    hsize_t in_high_bounds[1];  /* The high bounds for the selection for in_sid */
    hsize_t d_low_bounds[1];    /* The low bounds for the selection for d_sid */
    hsize_t d_high_bounds[1];   /* The high bounds for the selection for d_sid */
    herr_t ret;             /* Return value */

    /* Get buffer size for encoding with the format setting in in_fapl */
    H5E_BEGIN_TRY {
        ret = H5Sencode2(in_sid, NULL, &buf_size, in_fapl);
    } H5E_END_TRY

    if(expected_to_fail) {
        VERIFY(ret, FAIL, "H5Screate_simple");
    } else {

        CHECK(ret, FAIL, "H5Sencode2");

        /* Allocate the buffer for encoding */
        buf = (char *)HDmalloc(buf_size);
        CHECK(buf, NULL, "H5Dmalloc");

        /* Encode according to the setting in in_fapl */
        ret = H5Sencode2(in_sid, buf, &buf_size, in_fapl);
        CHECK(ret, FAIL, "H5Sencode2");

        /* Decode the buffer */
        d_sid = H5Sdecode(buf);
        CHECK(d_sid, FAIL, "H5Sdecode");

        /* Verify the number of selected points for in_sid and d_sid */
        VERIFY(H5Sget_select_npoints(in_sid), H5Sget_select_npoints(d_sid), "Compare npoints");

        /* Verify if the two dataspace selections (in_sid, d_sid) are the same shape */
        check = H5Sselect_shape_same(in_sid, d_sid);
        VERIFY(check, TRUE, "H5Sselect_shape_same");

        /* Compare the starting/ending coordinates of the bounding box for in_sid and d_sid */
        ret = H5Sget_select_bounds(in_sid, in_low_bounds, in_high_bounds);
        CHECK(ret, FAIL, "H5Sget_select_bounds");
        ret = H5Sget_select_bounds(d_sid, d_low_bounds, d_high_bounds);
        CHECK(ret, FAIL, "H5Sget_select_bounds");
        VERIFY(in_low_bounds[0], d_low_bounds[0], "Compare selection low bounds");
        VERIFY(in_high_bounds[0], d_high_bounds[0], "Compare selection high bounds");

        /* 
         * See "RFC: H5Sencode/H5Sdeocde Format Change" for the verification of:
         *   H5S_SEL_POINTS:
         *      --the expected version for point selection info
         *      --the expected encoded size (version 2 points selection info)
         *   H5S_SEL_HYPERSLABS:
         *      --the expected version for hyperslab selection info
         *      --the expected encoded size (version 3 hyperslab selection info)
         */

        if(H5Sget_select_type(in_sid) == H5S_SEL_POINTS) {
        
            /* Verify the version */
            VERIFY((uint32_t)buf[35], expected_version, "Version for point selection");

            /* Verify the encoded size for version 2 */
            if(expected_version == 2)
                VERIFY((uint8_t)buf[39], expected_enc_size, "Encoded size of point selection info");
        }

        if(H5Sget_select_type(in_sid) == H5S_SEL_HYPERSLABS) {

            /* Verify the version */
            VERIFY((uint32_t)buf[35], expected_version, "Version for hyperslab selection info");

            /* Verify the encoded size for version 3 */
            if(expected_version == 3)
                VERIFY((uint8_t)buf[40], expected_enc_size, "Encoded size of selection info");

        } /* hyperslab selection */

        ret = H5Sclose(d_sid);
        CHECK(ret, FAIL, "H5Sclose");
        if(buf) 
            HDfree(buf);

    }

    return(0);

} /* test_h5s_check_encoding */

/****************************************************************
**
**  test_h5s_encode_regular_hyper():
**      This test verifies that H5Sencode2() works as specified in
**      the RFC for regular hyperslabs.
**      See "RFC: H5Sencode/H5Sdeocde Format Change".
**
****************************************************************/
static void
test_h5s_encode_regular_hyper(H5F_libver_t low, H5F_libver_t high)
{
    hid_t fapl = -1;                 /* File access property list ID */
    hid_t sid = -1;                  /* Dataspace ID */
    hsize_t numparticles = 8388608;  /* Used to calculate dimension size */
    unsigned num_dsets = 513;        /* Used to calculate dimension size */
    hsize_t total_particles = numparticles * num_dsets;
    hsize_t vdsdims[1] = {total_particles}; /* Dimension size */
    hsize_t start, stride, count, block;    /* Selection info */
    unsigned config;                   /* Testing configuration */
    unsigned unlim;                    /* H5S_UNLIMITED setting or not */
    herr_t ret;                        /* Generic return value */
    uint32_t expected_version = 0;     /* Expected version for selection info */
    uint8_t expected_enc_size = 0;     /* Expected encoded size for selection info */

    /* Output message about test being performed */
    MESSAGE(5, ("Testing Dataspace encoding of regular hyperslabs\n"));

    /* Create the file access property list */
    fapl = H5Pcreate(H5P_FILE_ACCESS);
    CHECK(fapl, FAIL, "H5Pcreate");

    /* Set the low/high bounds in the fapl */
    ret = H5Pset_libver_bounds(fapl, low, high);
    CHECK(ret, FAIL, "H5Pset_libver_bounds");

    /* Create the dataspace */
    sid = H5Screate_simple(1, vdsdims, NULL);
    CHECK(sid, FAIL, "H5Screate_simple");

    /* Testing with each configuration */
    for(config = CONFIG_16; config <= CONFIG_32; config++) {
        hbool_t expected_to_fail = FALSE;

        /* Testing with unlimited or not */
        for(unlim = 0; unlim <= 1; unlim++) {
            start = 0;
            count = unlim? H5S_UNLIMITED : 2;

            if((high <= H5F_LIBVER_V18) && 
               (unlim || config == CONFIG_32))
                expected_to_fail = TRUE;

            if(low >= H5F_LIBVER_V112) 
                expected_version = 3;
            else if(config == CONFIG_16 && !unlim)
                expected_version = 1;
            else 
                expected_version = 2;

            /* test 1 */
            switch(config) {
                case CONFIG_16:
                    stride = POWER16 - 1;
                    block = 4;
                    expected_enc_size = (uint8_t)(expected_version == 3 ? 2 : 4);
                    break;
                case CONFIG_32:
                    stride = POWER32 - 1;
                    block = 4;
                    expected_enc_size = (uint8_t)(expected_version == 3 ? 4 : 8);
                    
                    break;
                default:
                    HDassert(0);
                    break;
            } /* end switch */

            /* Set the hyperslab selection */
            ret = H5Sselect_hyperslab(sid, H5S_SELECT_SET, &start, &stride, &count, &block);
            CHECK(ret, FAIL, "H5Sselect_hyperslab");

            /* Verify the version and encoded size expected for this configuration */
            ret = test_h5s_check_encoding(fapl, sid, expected_version, expected_enc_size, expected_to_fail);
            CHECK(ret, FAIL, "test_h5s_check_encoding");

            /* test 2 */
            switch(config) {
                case CONFIG_16:
                    stride = POWER16 - 1;
                    block = POWER16 - 2;
                    expected_enc_size = (uint8_t)(expected_version == 3 ? 2 : 4);
                    break;
                case CONFIG_32:
                    stride = POWER32 - 1;
                    block = POWER32 - 2;
                    expected_enc_size = (uint8_t)(expected_version == 3 ? 4 : 8);
                    break;
                default:
                    HDassert(0);
                    break;
            } /* end switch */

            /* Set the hyperslab selection */
            ret = H5Sselect_hyperslab(sid, H5S_SELECT_SET, &start, &stride, &count, &block);
            CHECK(ret, FAIL, "H5Sselect_hyperslab");

            /* Verify the version and encoded size for this configuration */
            ret = test_h5s_check_encoding(fapl, sid, expected_version, expected_enc_size, expected_to_fail);
            CHECK(ret, FAIL, "test_h5s_check_encoding");

            /* test 3 */
            switch(config) {
                case CONFIG_16:
                    stride = POWER16 - 1;
                    block = POWER16 - 1;
                    expected_enc_size = 4;
                    break;
                case CONFIG_32:
                    stride = POWER32 - 1;
                    block = POWER32 - 1;
                    expected_enc_size = 8;
                    break;
                default:
                    HDassert(0);
                    break;
            }

            /* Set the hyperslab selection */
            ret = H5Sselect_hyperslab(sid, H5S_SELECT_SET, &start, &stride, &count, &block);
            CHECK(ret, FAIL, "H5Sselect_hyperslab");

            /* Verify the version and encoded size expected for this configuration */
            ret = test_h5s_check_encoding(fapl, sid, expected_version, expected_enc_size, expected_to_fail);
            CHECK(ret, FAIL, "test_h5s_check_encoding");

            /* test 4 */
            switch(config) {
                case CONFIG_16:
                    stride = POWER16;
                    block = POWER16 - 2;
                    expected_enc_size = 4;
                    break;
                case CONFIG_32:
                    stride = POWER32;
                    block = POWER32 - 2;
                    expected_enc_size = 8;
                    break;
                default:
                    HDassert(0);
                    break;
            } /* end switch */

            /* Set the hyperslab selection */
            ret = H5Sselect_hyperslab(sid, H5S_SELECT_SET, &start, &stride, &count, &block);
            CHECK(ret, FAIL, "H5Sselect_hyperslab");

            /* Verify the version and encoded size expected for this configuration */
            ret = test_h5s_check_encoding(fapl, sid, expected_version, expected_enc_size, expected_to_fail);
            CHECK(ret, FAIL, "test_h5s_check_encoding");

            /* test 5 */
            switch(config) {
                case CONFIG_16:
                    stride = POWER16;
                    block = 1;
                    expected_enc_size = 4;
                    break;
                case CONFIG_32:
                    stride = POWER32;
                    block = 1;
                    expected_enc_size = 8;
                    break;
                default:
                    HDassert(0);
                    break;
            }

            /* Set the hyperslab selection */
            ret = H5Sselect_hyperslab(sid, H5S_SELECT_SET, &start, &stride, &count, &block);
            CHECK(ret, FAIL, "H5Sselect_hyperslab");

            /* Verify the version and encoded size expected for this configuration */
            ret = test_h5s_check_encoding(fapl, sid, expected_version, expected_enc_size, expected_to_fail);
            CHECK(ret, FAIL, "test_h5s_check_encoding");

        } /* for unlim */
    } /* for config */

    ret = H5Sclose(sid);
    CHECK(ret, FAIL, "H5Sclose");

    ret = H5Pclose(fapl);
    CHECK(ret, FAIL, "H5Pclose");

} /* test_h5s_encode_regular_hyper() */

/****************************************************************
**
**  test_h5s_encode_irregular_hyper(): 
**      This test verifies that H5Sencode2() works as specified in
**      the RFC for irregular hyperslabs.
**      See "RFC: H5Sencode/H5Sdeocde Format Change".
**
****************************************************************/
static void
test_h5s_encode_irregular_hyper(H5F_libver_t low, H5F_libver_t high)
{
    hid_t fapl = -1;    /* File access property list ID */
    hid_t sid;          /* Dataspace ID */
    hsize_t numparticles = 8388608; /* Used to calculate dimension size */
    unsigned num_dsets = 513;       /* Used to calculate dimension size */
    hsize_t total_particles = numparticles * num_dsets;
    hsize_t vdsdims[1] = {total_particles}; /* Dimension size */
    hsize_t start, stride, count, block;    /* Selection info */
    htri_t is_regular;  /* Is this a regular hyperslab */
    unsigned config;    /* Testing configuration */
    herr_t ret;         /* Generic return value */

    /* Output message about test being performed */
    MESSAGE(5, ("Testing Dataspace encoding of irregular hyperslabs\n"));

    /* Create the file access property list */
    fapl = H5Pcreate(H5P_FILE_ACCESS);
    CHECK(fapl, FAIL, "H5Pcreate");

    /* Set the low/high bounds in the fapl */
    ret = H5Pset_libver_bounds(fapl, low, high);
    CHECK(ret, FAIL, "H5Pset_libver_bounds");

    /* Create the dataspace */
    sid = H5Screate_simple(1, vdsdims, NULL);
    CHECK(sid, FAIL, "H5Screate_simple");

    /* Testing with each configuration */
    for(config = CONFIG_8; config <= CONFIG_32; config++) {
        hbool_t expected_to_fail = FALSE;   /* Whether H5Sencode2 is expected to fail */
        uint32_t expected_version = 0;      /* Expected version for selection info */
        uint32_t expected_enc_size = 0;     /* Expected encoded size for selection info */

        start = 0;
        count = 2;
        block = 4;

        /* H5Sencode2 is expected to fail for library v110 and below
           when the selection exceeds the 32 bits integer limit */
        if(high <= H5F_LIBVER_V110 && config == CONFIG_32)
            expected_to_fail = TRUE;

        if(low >= H5F_LIBVER_V112 || config == CONFIG_32)
            expected_version = 3;
        else
            expected_version = 1;

        switch(config) {
            case CONFIG_8:
                stride = POWER8 - 2;
                break;

            case CONFIG_16:
                stride = POWER16 - 2;
                break;

            case CONFIG_32:
                stride = POWER32 - 2;
                break;

            default:
                HDassert(0);
                break;
        }

        /* Set the hyperslab selection */
        ret = H5Sselect_hyperslab(sid, H5S_SELECT_SET, &start, &stride, &count, &block);
        CHECK(ret, FAIL, "H5Sselect_hyperslab");

        start = 8;
        count = 5;
        block = 2;

        switch(config) {
            case CONFIG_8:
                stride = POWER8;
                expected_enc_size = expected_version == 3 ? 2 : 4;
                break;

            case CONFIG_16:
                stride = POWER16;    
                expected_enc_size = 4;
                break;

            case CONFIG_32:
                stride = POWER32;
                expected_enc_size = 8;
                break;

            default:
                assert(0);
                break;
        }

        /* Set the hyperslab selection */
        ret = H5Sselect_hyperslab(sid, H5S_SELECT_OR, &start, &stride, &count, &block);
        CHECK(ret, FAIL, "H5Sselect_hyperslab");

        /* Should be irregular hyperslab */
        is_regular = H5Sis_regular_hyperslab(sid);
        VERIFY(is_regular, FALSE, "H5Sis_regular_hyperslab");

        /* Verify the version and encoded size expected for the configuration */
        HDassert(expected_enc_size <= 255);
        ret = test_h5s_check_encoding(fapl, sid, expected_version, (uint8_t)expected_enc_size, expected_to_fail);
        CHECK(ret, FAIL, "test_h5s_check_encoding");

    } /* for config */

    ret = H5Sclose(sid);
    CHECK(ret, FAIL, "H5Sclose");

} /* test_h5s_encode_irregular_hyper() */

/****************************************************************
**
**  test_h5s_encode_points():
**      This test verifies that H5Sencode2() works as specified in
**      the RFC for point selection.
**      See "RFC: H5Sencode/H5Sdeocde Format Change".
**
****************************************************************/
static void
test_h5s_encode_points(H5F_libver_t low, H5F_libver_t high)
{
    hid_t fapl = -1;    /* File access property list ID */
    hid_t sid;          /* Dataspace ID */
    hsize_t numparticles = 8388608; /* Used to calculate dimenion size */
    unsigned num_dsets = 513;       /* used to calculate dimension size */
    hsize_t total_particles = numparticles * num_dsets;
    hsize_t vdsdims[1] = {total_particles}; /* Dimension size */
    hsize_t coord[4];   /* The point coordinates */
    herr_t ret;         /* Generic return value */
    hbool_t expected_to_fail = FALSE;   /* Expected to fail or not */
    uint32_t expected_version = 0;      /* Expected version for selection info */
    uint8_t expected_enc_size = 0;      /* Expected encoded size of selection info */

    /* Output message about test being performed */
    MESSAGE(5, ("Testing Dataspace encoding of points selection\n"));

    /* Create the file access property list */
    fapl = H5Pcreate(H5P_FILE_ACCESS);
    CHECK(fapl, FAIL, "H5Pcreate");

    /* Set the low/high bounds in the fapl */
    ret = H5Pset_libver_bounds(fapl, low, high);
    CHECK(ret, FAIL, "H5Pset_libver_bounds");

    /* Create the dataspace */
    sid = H5Screate_simple(1, vdsdims, NULL);
    CHECK(sid, FAIL, "H5Screate_simple");

    /* test 1 */
    coord[0] = 5;
    coord[1] = 15;
    coord[2] = POWER16;
    coord[3] = 19;
    ret = H5Sselect_elements(sid, H5S_SELECT_SET, (size_t)4, coord);
    CHECK(ret, FAIL, "H5Sselect_elements");

    expected_to_fail = FALSE;
    expected_enc_size = 4;
    expected_version = 1;

    if(low >= H5F_LIBVER_V112)
        expected_version = 2;

    /* Verify the version and encoded size expected for the configuration */
    ret = test_h5s_check_encoding(fapl, sid, expected_version, expected_enc_size, expected_to_fail);
    CHECK(ret, FAIL, "test_h5s_check_encoding");

    /* test 2 */
    coord[0] = 5;
    coord[1] = 15;
    coord[2] = POWER32 - 1;
    coord[3] = 19;
    ret = H5Sselect_elements(sid, H5S_SELECT_SET, (size_t)4, coord);
    CHECK(ret, FAIL, "H5Sselect_elements");

    /* Expected result same as test 1 */
    ret = test_h5s_check_encoding(fapl, sid, expected_version, expected_enc_size, expected_to_fail);
    CHECK(ret, FAIL, "test_h5s_check_encoding");

    /* test 3 */
    if(high <= H5F_LIBVER_V110)
        expected_to_fail = TRUE;

    if(high >= H5F_LIBVER_V112) {
        expected_version = 2;
        expected_enc_size = 8;
    }

    coord[0] = 5;
    coord[1] = 15;
    coord[2] = POWER32 + 1;
    coord[3] = 19;
    ret = H5Sselect_elements(sid, H5S_SELECT_SET, (size_t)4, coord);
    CHECK(ret, FAIL, "H5Sselect_elements");

    /* Verify the version and encoded size expected for the configuration */
    ret = test_h5s_check_encoding(fapl, sid, expected_version, expected_enc_size, expected_to_fail);
    CHECK(ret, FAIL, "test_h5s_check_encoding");

    /* Close the dataspace */
    ret = H5Sclose(sid);
    CHECK(ret, FAIL, "H5Sclose");

} /* test_h5s_encode_points() */

/****************************************************************
**
**  test_h5s_encode_length(): 
**      Test to verify HDFFV-10271 is fixed.
**      Verify that version 2 hyperslab encoding length is correct.
**
**  See "RFC: H5Sencode/H5Sdecode Format Change" for the 
**  description of the encoding format.
**
****************************************************************/
static void
test_h5s_encode_length(void)
{
    hid_t sid;                  /* Dataspace ID */
    hid_t decoded_sid;          /* Dataspace ID from H5Sdecode2 */
    size_t sbuf_size=0;         /* Buffer size for H5Sencode2/1 */
    unsigned char *sbuf=NULL;   /* Buffer for H5Sencode2/1 */
    hsize_t dims[1] = {500};    /* Dimension size */
    hsize_t start, count, block, stride;    /* Hyperslab selection specifications */
    herr_t ret;                 /* Generic return value */

    /* Output message about test being performed */
    MESSAGE(5, ("Testing Version 2 Hyperslab Encoding Length is correct\n"));

    /* Create dataspace */
    sid = H5Screate_simple(1, dims, NULL);
    CHECK(sid, FAIL, "H5Screate_simple");

    /* Setting H5S_UNLIMITED in count will use version 2 for hyperslab encoding */
    start = 0;
    stride = 10;
    block = 4;
    count = H5S_UNLIMITED;

    /* Set hyperslab selection */
    ret = H5Sselect_hyperslab(sid, H5S_SELECT_SET, &start, &stride, &count, &block);
    CHECK(ret, FAIL, "H5Sselect_hyperslab");

    /* Encode simple dataspace in a buffer */
    ret = H5Sencode2(sid, NULL, &sbuf_size, H5P_DEFAULT);
    CHECK(ret, FAIL, "H5Sencode");

    /* Allocate the buffer */
    if(sbuf_size > 0) {
        sbuf = (unsigned char*)HDcalloc((size_t)1, sbuf_size);
        CHECK(sbuf, NULL, "H5Sencode2");
    }

    /* Encode the dataspace */
    ret = H5Sencode2(sid, sbuf, &sbuf_size, H5P_DEFAULT);
    CHECK(ret, FAIL, "H5Sencode");

    /* Verify that length stored at this location in the buffer is correct */
    VERIFY((uint32_t)sbuf[40], 36, "Length for encoding version 2");
    VERIFY((uint32_t)sbuf[35], 2, "Hyperslab encoding version is 2");

    /* Decode from the dataspace buffer and return an object handle */
    decoded_sid = H5Sdecode(sbuf);
    CHECK(decoded_sid, FAIL, "H5Sdecode");

    /* Verify that the original and the decoded dataspace are equal */
    VERIFY(H5Sget_select_npoints(sid), H5Sget_select_npoints(decoded_sid), "Compare npoints");

    /* Close the decoded dataspace */
    ret = H5Sclose(decoded_sid);
    CHECK(ret, FAIL, "H5Sclose");

    /* Free the buffer */
    if(sbuf)
        HDfree(sbuf);

    /* Close the original dataspace */
    ret = H5Sclose(sid);
    CHECK(ret, FAIL, "H5Sclose");

} /* test_h5s_encode_length() */

/****************************************************************
**
**  test_h5s_scalar_write(): Test scalar H5S (dataspace) writing code.
**
****************************************************************/
static void
test_h5s_scalar_write(void)
{
    hid_t        fid1;      /* HDF5 File IDs        */
    hid_t        dataset;   /* Dataset ID            */
    hid_t        sid1;      /* Dataspace ID            */
    int          rank;      /* Logical rank of dataspace    */
    hsize_t      tdims[4];  /* Dimension array to test with */
    hssize_t     n;         /* Number of dataspace elements */
    H5S_class_t  ext_type;  /* Extent type */
    herr_t        ret;      /* Generic return value        */

    /* Output message about test being performed */
    MESSAGE(5, ("Testing Scalar Dataspace Manipulation during Writing\n"));

    /* Create file */
    fid1 = H5Fcreate(DATAFILE, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
    CHECK(fid1, FAIL, "H5Fcreate");

    /* Verify a non-zero rank fails with a NULL dimension. */
    H5E_BEGIN_TRY {
        sid1 = H5Screate_simple(SPACE1_RANK, NULL, NULL);
    } H5E_END_TRY
    VERIFY(sid1, FAIL, "H5Screate_simple");

    /* Create scalar dataspace */
    sid1 = H5Screate_simple(SPACE3_RANK, NULL, NULL);
    CHECK(sid1, FAIL, "H5Screate_simple");

    /* Retrieve the number of elements in the dataspace selection */
    n = H5Sget_simple_extent_npoints(sid1);
    CHECK(n, FAIL, "H5Sget_simple_extent_npoints");
    VERIFY(n, 1, "H5Sget_simple_extent_npoints");

    /* Get the dataspace rank */
    rank = H5Sget_simple_extent_ndims(sid1);
    CHECK(rank, FAIL, "H5Sget_simple_extent_ndims");
    VERIFY(rank, SPACE3_RANK, "H5Sget_simple_extent_ndims");

    /* Get the dataspace dimension sizes */
    rank = H5Sget_simple_extent_dims(sid1, tdims, NULL);
    VERIFY(rank, 0, "H5Sget_simple_extent_dims");

    /* Verify extent type */
    ext_type = H5Sget_simple_extent_type(sid1);
    VERIFY(ext_type, H5S_SCALAR, "H5Sget_simple_extent_type");

    /* Create a dataset */
    dataset = H5Dcreate2(fid1, "Dataset1", H5T_NATIVE_UINT, sid1, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
    CHECK(dataset, FAIL, "H5Dcreate2");

    /* Write to the dataset */
    ret = H5Dwrite(dataset, H5T_NATIVE_UINT, H5S_ALL, H5S_ALL, H5P_DEFAULT, &space3_data);
    CHECK(ret, FAIL, "H5Dwrite");

    /* Close Dataset */
    ret = H5Dclose(dataset);
    CHECK(ret, FAIL, "H5Dclose");

    /* Close scalar dataspace */
    ret = H5Sclose(sid1);
    CHECK(ret, FAIL, "H5Sclose");

    /* Close file */
    ret = H5Fclose(fid1);
    CHECK(ret, FAIL, "H5Fclose");
}  /* test_h5s_scalar_write() */

/****************************************************************
**
**  test_h5s_scalar_read(): Test scalar H5S (dataspace) reading code.
**
****************************************************************/
static void
test_h5s_scalar_read(void)
{
    hid_t        fid1;        /* HDF5 File IDs        */
    hid_t        dataset;    /* Dataset ID            */
    hid_t        sid1;            /* Dataspace ID            */
    int                rank;        /* Logical rank of dataspace    */
    hsize_t        tdims[4];    /* Dimension array to test with */
    hssize_t        n;         /* Number of dataspace elements */
    unsigned          rdata;          /* Scalar data read in         */
    herr_t        ret;        /* Generic return value        */
    H5S_class_t ext_type;               /* Extent type */

    /* Output message about test being performed */
    MESSAGE(5, ("Testing Scalar Dataspace Manipulation during Reading\n"));

    /* Create file */
    fid1 = H5Fopen(DATAFILE, H5F_ACC_RDWR, H5P_DEFAULT);
    CHECK(fid1, FAIL, "H5Fopen");

    /* Create a dataset */
    dataset = H5Dopen2(fid1, "Dataset1", H5P_DEFAULT);
    CHECK(dataset, FAIL, "H5Dopen2");

    sid1 = H5Dget_space(dataset);
    CHECK(sid1, FAIL, "H5Dget_space");

    n = H5Sget_simple_extent_npoints(sid1);
    CHECK(n, FAIL, "H5Sget_simple_extent_npoints");
    VERIFY(n, 1, "H5Sget_simple_extent_npoints");

    rank = H5Sget_simple_extent_ndims(sid1);
    CHECK(rank, FAIL, "H5Sget_simple_extent_ndims");
    VERIFY(rank, SPACE3_RANK, "H5Sget_simple_extent_ndims");

    rank = H5Sget_simple_extent_dims(sid1, tdims, NULL);
    VERIFY(rank, 0, "H5Sget_simple_extent_dims");

    /* Verify extent type */
    ext_type = H5Sget_simple_extent_type(sid1);
    VERIFY(ext_type, H5S_SCALAR, "H5Sget_simple_extent_type");

    ret = H5Dread(dataset, H5T_NATIVE_UINT, H5S_ALL, H5S_ALL, H5P_DEFAULT, &rdata);
    CHECK(ret, FAIL, "H5Dread");
    VERIFY(rdata, space3_data, "H5Dread");

    /* Close Dataset */
    ret = H5Dclose(dataset);
    CHECK(ret, FAIL, "H5Dclose");

    /* Close scalar dataspace */
    ret = H5Sclose(sid1);
    CHECK(ret, FAIL, "H5Sclose");

    /* Close file */
    ret = H5Fclose(fid1);
    CHECK(ret, FAIL, "H5Fclose");
}                /* test_h5s_scalar_read() */

/****************************************************************
**
**  test_h5s_compound_scalar_write(): Test scalar H5S (dataspace) writing for
**          compound datatypes.
**
****************************************************************/
static void
test_h5s_compound_scalar_write(void)
{
    hid_t        fid1;        /* HDF5 File IDs        */
    hid_t        dataset;    /* Dataset ID            */
    hid_t           tid1;           /* Attribute datatype ID    */
    hid_t        sid1;            /* Dataspace ID            */
    int                rank;        /* Logical rank of dataspace    */
    hsize_t        tdims[4];    /* Dimension array to test with */
    hssize_t        n;         /* Number of dataspace elements */
    herr_t        ret;        /* Generic return value        */

    /* Output message about test being performed */
    MESSAGE(5, ("Testing Scalar Dataspace Manipulation for Writing Compound Datatypes\n"));

    /* Create file */
    fid1 = H5Fcreate(DATAFILE, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
    CHECK(fid1, FAIL, "H5Fcreate");

    /* Create the compound datatype.  */
    tid1 = H5Tcreate (H5T_COMPOUND, sizeof(struct space4_struct));
    CHECK(tid1, FAIL, "H5Tcreate");
    space4_field1_off=HOFFSET(struct space4_struct, c1);
    ret = H5Tinsert(tid1, SPACE4_FIELDNAME1, space4_field1_off,
            H5T_NATIVE_SCHAR);
    CHECK(ret, FAIL, "H5Tinsert");
    space4_field2_off=HOFFSET(struct space4_struct, u);
    ret = H5Tinsert(tid1, SPACE4_FIELDNAME2, space4_field2_off,
            H5T_NATIVE_UINT);
    CHECK(ret, FAIL, "H5Tinsert");
    space4_field3_off=HOFFSET(struct space4_struct, f);
    ret = H5Tinsert(tid1, SPACE4_FIELDNAME3, space4_field3_off,
            H5T_NATIVE_FLOAT);
    CHECK(ret, FAIL, "H5Tinsert");
    space4_field4_off=HOFFSET(struct space4_struct, c2);
    ret = H5Tinsert(tid1, SPACE4_FIELDNAME4, space4_field4_off,
            H5T_NATIVE_SCHAR);
    CHECK(ret, FAIL, "H5Tinsert");

    /* Create scalar dataspace */
    sid1 = H5Screate_simple(SPACE3_RANK, NULL, NULL);
    CHECK(sid1, FAIL, "H5Screate_simple");

    n = H5Sget_simple_extent_npoints(sid1);
    CHECK(n, FAIL, "H5Sget_simple_extent_npoints");
    VERIFY(n, 1, "H5Sget_simple_extent_npoints");

    rank = H5Sget_simple_extent_ndims(sid1);
    CHECK(rank, FAIL, "H5Sget_simple_extent_ndims");
    VERIFY(rank, SPACE3_RANK, "H5Sget_simple_extent_ndims");

    rank = H5Sget_simple_extent_dims(sid1, tdims, NULL);
    VERIFY(rank, 0, "H5Sget_simple_extent_dims");

    /* Create a dataset */
    dataset = H5Dcreate2(fid1, "Dataset1", tid1, sid1, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
    CHECK(dataset, FAIL, "H5Dcreate2");

    ret = H5Dwrite(dataset, tid1, H5S_ALL, H5S_ALL, H5P_DEFAULT, &space4_data);
    CHECK(ret, FAIL, "H5Dwrite");

    /* Close Dataset */
    ret = H5Dclose(dataset);
    CHECK(ret, FAIL, "H5Dclose");

    /* Close compound datatype */
    ret = H5Tclose(tid1);
    CHECK(ret, FAIL, "H5Tclose");

    /* Close scalar dataspace */
    ret = H5Sclose(sid1);
    CHECK(ret, FAIL, "H5Sclose");

    /* Close file */
    ret = H5Fclose(fid1);
    CHECK(ret, FAIL, "H5Fclose");
}                /* test_h5s_compound_scalar_write() */

/****************************************************************
**
**  test_h5s_compound_scalar_read(): Test scalar H5S (dataspace) reading for
**          compound datatypes.
**
****************************************************************/
static void
test_h5s_compound_scalar_read(void)
{
    hid_t        fid1;        /* HDF5 File IDs        */
    hid_t        dataset;    /* Dataset ID            */
    hid_t        sid1;            /* Dataspace ID            */
    hid_t           type;           /* Datatype                 */
    int                rank;        /* Logical rank of dataspace    */
    hsize_t        tdims[4];    /* Dimension array to test with */
    hssize_t        n;         /* Number of dataspace elements */
    struct space4_struct rdata;     /* Scalar data read in         */
    herr_t        ret;        /* Generic return value        */

    /* Output message about test being performed */
    MESSAGE(5, ("Testing Scalar Dataspace Manipulation for Reading Compound Datatypes\n"));

    /* Create file */
    fid1 = H5Fopen(DATAFILE, H5F_ACC_RDWR, H5P_DEFAULT);
    CHECK(fid1, FAIL, "H5Fopen");

    /* Create a dataset */
    dataset = H5Dopen2(fid1, "Dataset1", H5P_DEFAULT);
    CHECK(dataset, FAIL, "H5Dopen2");

    sid1 = H5Dget_space(dataset);
    CHECK(sid1, FAIL, "H5Dget_space");

    n = H5Sget_simple_extent_npoints(sid1);
    CHECK(n, FAIL, "H5Sget_simple_extent_npoints");
    VERIFY(n, 1, "H5Sget_simple_extent_npoints");

    rank = H5Sget_simple_extent_ndims(sid1);
    CHECK(rank, FAIL, "H5Sget_simple_extent_ndims");
    VERIFY(rank, SPACE3_RANK, "H5Sget_simple_extent_ndims");

    rank = H5Sget_simple_extent_dims(sid1, tdims, NULL);
    VERIFY(rank, 0, "H5Sget_simple_extent_dims");

    type=H5Dget_type(dataset);
    CHECK(type, FAIL, "H5Dget_type");

    ret = H5Dread(dataset, type, H5S_ALL, H5S_ALL, H5P_DEFAULT, &rdata);
    CHECK(ret, FAIL, "H5Dread");
    if(HDmemcmp(&space4_data,&rdata,sizeof(struct space4_struct))) {
        HDprintf("scalar data different: space4_data.c1=%c, read_data4.c1=%c\n",space4_data.c1,rdata.c1);
        HDprintf("scalar data different: space4_data.u=%u, read_data4.u=%u\n",space4_data.u,rdata.u);
        HDprintf("scalar data different: space4_data.f=%f, read_data4.f=%f\n",(double)space4_data.f,(double)rdata.f);
        TestErrPrintf("scalar data different: space4_data.c1=%c, read_data4.c1=%c\n",space4_data.c1,rdata.c2);
     } /* end if */

    /* Close datatype */
    ret = H5Tclose(type);
    CHECK(ret, FAIL, "H5Tclose");

    /* Close Dataset */
    ret = H5Dclose(dataset);
    CHECK(ret, FAIL, "H5Dclose");

    /* Close scalar dataspace */
    ret = H5Sclose(sid1);
    CHECK(ret, FAIL, "H5Sclose");

    /* Close file */
    ret = H5Fclose(fid1);
    CHECK(ret, FAIL, "H5Fclose");
}   /* end test_h5s_compound_scalar_read() */


/* Data array sizes for chunk test */
#define CHUNK_DATA_NX   50000
#define CHUNK_DATA_NY   3

/****************************************************************
**
**  test_h5s_chunk(): Exercise chunked I/O, testing when data conversion
**      is necessary and the entire chunk read in doesn't fit into the
**      conversion buffer
**
****************************************************************/
static void
test_h5s_chunk(void)
{
    herr_t status;
    hid_t fileID, dsetID;
    hid_t plist_id;
    hid_t space_id;
    hsize_t dims[2];
    hsize_t csize[2];
    double  **chunk_data_dbl        = NULL;
    double  *chunk_data_dbl_data    = NULL;
    float   **chunk_data_flt        = NULL;
    float   *chunk_data_flt_data    = NULL;
    int i,j;

    /* Allocate memory */
    chunk_data_dbl_data = (double *)HDcalloc(CHUNK_DATA_NX * CHUNK_DATA_NY, sizeof(double));
    CHECK_PTR(chunk_data_dbl_data, "HDcalloc");
    chunk_data_dbl = (double **)HDcalloc(CHUNK_DATA_NX, sizeof(chunk_data_dbl_data));
    CHECK_PTR(chunk_data_dbl, "HDcalloc");
    for (i = 0; i < CHUNK_DATA_NX; i++)
        chunk_data_dbl[i] = chunk_data_dbl_data + (i * CHUNK_DATA_NY);

    chunk_data_flt_data = (float *)HDcalloc(CHUNK_DATA_NX * CHUNK_DATA_NY, sizeof(float));
    CHECK_PTR(chunk_data_flt_data, "HDcalloc");
    chunk_data_flt = (float **)HDcalloc(CHUNK_DATA_NX, sizeof(chunk_data_flt_data));
    CHECK_PTR(chunk_data_flt, "HDcalloc");
    for (i = 0; i < CHUNK_DATA_NX; i++)
        chunk_data_flt[i] = chunk_data_flt_data + (i * CHUNK_DATA_NY);

    fileID = H5Fcreate(DATAFILE, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
    CHECK(fileID, FAIL, "H5Fcreate");

    plist_id = H5Pcreate(H5P_DATASET_CREATE);
    CHECK(plist_id, FAIL, "H5Pcreate");

    csize[0] = CHUNK_DATA_NX;
    csize[1] = CHUNK_DATA_NY;
    status = H5Pset_chunk(plist_id, 2, csize);
    CHECK(status, FAIL, "H5Pset_chunk");

    /* Create the dataspace */
    dims[0] = CHUNK_DATA_NX;
    dims[1] = CHUNK_DATA_NY;
    space_id = H5Screate_simple(2, dims, NULL);
    CHECK(space_id, FAIL, "H5Screate_simple");

    dsetID = H5Dcreate2(fileID, "coords", H5T_NATIVE_FLOAT, space_id, H5P_DEFAULT, plist_id, H5P_DEFAULT);
    CHECK(dsetID, FAIL, "H5Dcreate2");

    /* Initialize float array */
    for(i = 0; i < CHUNK_DATA_NX; i++)
        for(j = 0; j < CHUNK_DATA_NY; j++)
            chunk_data_flt[i][j] = (float)(i + 1) * 2.5F - (float)j * 100.3F;

    status = H5Dwrite(dsetID, H5T_NATIVE_FLOAT, H5S_ALL, H5S_ALL, H5P_DEFAULT, chunk_data_flt_data);
    CHECK(status, FAIL, "H5Dwrite");

    status = H5Pclose(plist_id);
    CHECK(status, FAIL, "H5Pclose");
    status = H5Sclose(space_id);
    CHECK(status, FAIL, "H5Sclose");
    status = H5Dclose(dsetID);
    CHECK(status, FAIL, "H5Dclose");
    status = H5Fclose(fileID);
    CHECK(status, FAIL, "H5Fclose");

    /* Reset/initialize the data arrays to read in */
    HDmemset(chunk_data_dbl_data, 0, sizeof(double) * CHUNK_DATA_NX * CHUNK_DATA_NY);
    HDmemset(chunk_data_flt_data, 0, sizeof(float) * CHUNK_DATA_NX * CHUNK_DATA_NY);

    fileID = H5Fopen(DATAFILE, H5F_ACC_RDONLY, H5P_DEFAULT);
    CHECK(fileID, FAIL, "H5Fopen");
    dsetID = H5Dopen2(fileID, "coords", H5P_DEFAULT);
    CHECK(dsetID, FAIL, "H5Dopen2");

    status= H5Dread(dsetID, H5T_NATIVE_DOUBLE, H5S_ALL, H5S_ALL, H5P_DEFAULT, chunk_data_dbl_data);
    CHECK(status, FAIL, "H5Dread");
    status= H5Dread(dsetID, H5T_NATIVE_FLOAT, H5S_ALL, H5S_ALL, H5P_DEFAULT, chunk_data_flt_data);
    CHECK(status, FAIL, "H5Dread");

    status = H5Dclose(dsetID);
    CHECK(status, FAIL, "H5Dclose");
    status = H5Fclose(fileID);
    CHECK(status, FAIL, "H5Fclose");

    for(i = 0; i < CHUNK_DATA_NX; i++) {
        for(j = 0; j < CHUNK_DATA_NY; j++) {
            /* Check if the two values are within 0.001% range. */
            if(!H5_DBL_REL_EQUAL(chunk_data_dbl[i][j], (double)chunk_data_flt[i][j], (double)0.00001F))
                TestErrPrintf("%u: chunk_data_dbl[%d][%d]=%e, chunk_data_flt[%d][%d]=%e\n", (unsigned)__LINE__, i, j, chunk_data_dbl[i][j], i, j, (double)chunk_data_flt[i][j]);
        } /* end for */
    } /* end for */

    HDfree(chunk_data_dbl);
    HDfree(chunk_data_dbl_data);
    HDfree(chunk_data_flt);
    HDfree(chunk_data_flt_data);
} /* test_h5s_chunk() */

/****************************************************************
**
**  test_h5s_extent_equal(): Exercise extent comparison code
**
****************************************************************/
static void
test_h5s_extent_equal(void)
{
    hid_t null_space;           /* Null dataspace */
    hid_t scalar_space;         /* Scalar dataspace */
    hid_t d1_space1, d1_space2, d1_space3, d1_space4; /* 1-D dataspaces */
    hid_t d2_space1, d2_space2, d2_space3, d2_space4; /* 2-D dataspaces */
    hid_t d3_space1, d3_space2, d3_space3, d3_space4; /* 3-D dataspaces */
    hsize_t d1_dims1[1] = {10}, /* 1-D dimensions */
        d1_dims2[1] = {20},
        d1_dims3[1] = {H5S_UNLIMITED};
    hsize_t d2_dims1[2] = {10, 10},             /* 2-D dimensions */
        d2_dims2[2] = {20, 20},
        d2_dims3[2] = {H5S_UNLIMITED, H5S_UNLIMITED};
    hsize_t d3_dims1[3] = {10, 10, 10},         /* 3-D dimensions */
        d3_dims2[3] = {20, 20, 20},
        d3_dims3[3] = {H5S_UNLIMITED, H5S_UNLIMITED, H5S_UNLIMITED};
    htri_t ext_equal;           /* Whether two dataspace extents are equal */
    herr_t ret;                 /* Generic error return */

    /* Create dataspaces */
    null_space = H5Screate(H5S_NULL);
    CHECK(null_space, FAIL, "H5Screate");

    scalar_space = H5Screate(H5S_SCALAR);
    CHECK(scalar_space, FAIL, "H5Screate");

    d1_space1 = H5Screate_simple(1, d1_dims1, NULL);
    CHECK(d1_space1, FAIL, "H5Screate");
    d1_space2 = H5Screate_simple(1, d1_dims2, NULL);
    CHECK(d1_space2, FAIL, "H5Screate");
    d1_space3 = H5Screate_simple(1, d1_dims1, d1_dims2);
    CHECK(d1_space3, FAIL, "H5Screate");
    d1_space4 = H5Screate_simple(1, d1_dims1, d1_dims3);
    CHECK(d1_space4, FAIL, "H5Screate");

    d2_space1 = H5Screate_simple(2, d2_dims1, NULL);
    CHECK(d2_space1, FAIL, "H5Screate");
    d2_space2 = H5Screate_simple(2, d2_dims2, NULL);
    CHECK(d2_space2, FAIL, "H5Screate");
    d2_space3 = H5Screate_simple(2, d2_dims1, d2_dims2);
    CHECK(d2_space3, FAIL, "H5Screate");
    d2_space4 = H5Screate_simple(2, d2_dims1, d2_dims3);
    CHECK(d2_space4, FAIL, "H5Screate");

    d3_space1 = H5Screate_simple(3, d3_dims1, NULL);
    CHECK(d3_space1, FAIL, "H5Screate");
    d3_space2 = H5Screate_simple(3, d3_dims2, NULL);
    CHECK(d3_space2, FAIL, "H5Screate");
    d3_space3 = H5Screate_simple(3, d3_dims1, d3_dims2);
    CHECK(d3_space3, FAIL, "H5Screate");
    d3_space4 = H5Screate_simple(3, d3_dims1, d3_dims3);
    CHECK(d3_space4, FAIL, "H5Screate");

    /* Compare all dataspace combinations */

    /* Compare null dataspace against all others, including itself */
    ext_equal = H5Sextent_equal(null_space, null_space);
    VERIFY(ext_equal, TRUE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(null_space, scalar_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(null_space, d1_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(null_space, d1_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(null_space, d1_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(null_space, d1_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(null_space, d2_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(null_space, d2_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(null_space, d2_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(null_space, d2_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(null_space, d3_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(null_space, d3_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(null_space, d3_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(null_space, d3_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");

    /* Compare scalar dataspace against all others, including itself */
    ext_equal = H5Sextent_equal(scalar_space, null_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(scalar_space, scalar_space);
    VERIFY(ext_equal, TRUE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(scalar_space, d1_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(scalar_space, d1_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(scalar_space, d1_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(scalar_space, d1_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(scalar_space, d2_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(scalar_space, d2_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(scalar_space, d2_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(scalar_space, d2_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(scalar_space, d3_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(scalar_space, d3_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(scalar_space, d3_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(scalar_space, d3_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");

    /* Compare small 1-D dataspace w/no max. dims against all others, including itself */
    ext_equal = H5Sextent_equal(d1_space1, null_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space1, scalar_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space1, d1_space1);
    VERIFY(ext_equal, TRUE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space1, d1_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space1, d1_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space1, d1_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space1, d2_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space1, d2_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space1, d2_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space1, d2_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space1, d3_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space1, d3_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space1, d3_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space1, d3_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");

    /* Compare larger 1-D dataspace w/no max. dims against all others, including itself */
    ext_equal = H5Sextent_equal(d1_space2, null_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space2, scalar_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space2, d1_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space2, d1_space2);
    VERIFY(ext_equal, TRUE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space2, d1_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space2, d1_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space2, d2_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space2, d2_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space2, d2_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space2, d2_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space2, d3_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space2, d3_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space2, d3_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space2, d3_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");

    /* Compare small 1-D dataspace w/fixed max. dims against all others, including itself */
    ext_equal = H5Sextent_equal(d1_space3, null_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space3, scalar_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space3, d1_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space3, d1_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space3, d1_space3);
    VERIFY(ext_equal, TRUE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space3, d1_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space3, d2_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space3, d2_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space3, d2_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space3, d2_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space3, d3_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space3, d3_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space3, d3_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space3, d3_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");

    /* Compare small 1-D dataspace w/unlimited max. dims against all others, including itself */
    ext_equal = H5Sextent_equal(d1_space4, null_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space4, scalar_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space4, d1_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space4, d1_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space4, d1_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space4, d1_space4);
    VERIFY(ext_equal, TRUE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space4, d2_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space4, d2_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space4, d2_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space4, d2_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space4, d3_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space4, d3_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space4, d3_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d1_space4, d3_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");

    /* Compare small 2-D dataspace w/no max. dims against all others, including itself */
    ext_equal = H5Sextent_equal(d2_space1, null_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space1, scalar_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space1, d1_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space1, d1_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space1, d1_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space1, d1_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space1, d2_space1);
    VERIFY(ext_equal, TRUE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space1, d2_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space1, d2_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space1, d2_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space1, d3_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space1, d3_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space1, d3_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space1, d3_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");

    /* Compare larger 2-D dataspace w/no max. dims against all others, including itself */
    ext_equal = H5Sextent_equal(d2_space2, null_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space2, scalar_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space2, d1_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space2, d1_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space2, d1_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space2, d1_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space2, d2_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space2, d2_space2);
    VERIFY(ext_equal, TRUE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space2, d2_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space2, d2_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space2, d3_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space2, d3_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space2, d3_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space2, d3_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");

    /* Compare small 2-D dataspace w/fixed max. dims against all others, including itself */
    ext_equal = H5Sextent_equal(d2_space3, null_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space3, scalar_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space3, d1_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space3, d1_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space3, d1_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space3, d1_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space3, d2_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space3, d2_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space3, d2_space3);
    VERIFY(ext_equal, TRUE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space3, d2_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space3, d3_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space3, d3_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space3, d3_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space3, d3_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");

    /* Compare small 2-D dataspace w/unlimited max. dims against all others, including itself */
    ext_equal = H5Sextent_equal(d2_space4, null_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space4, scalar_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space4, d1_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space4, d1_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space4, d1_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space4, d1_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space4, d2_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space4, d2_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space4, d2_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space4, d2_space4);
    VERIFY(ext_equal, TRUE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space4, d3_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space4, d3_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space4, d3_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d2_space4, d3_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");

    /* Compare small 3-D dataspace w/no max. dims against all others, including itself */
    ext_equal = H5Sextent_equal(d3_space1, null_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space1, scalar_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space1, d1_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space1, d1_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space1, d1_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space1, d1_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space1, d2_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space1, d2_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space1, d2_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space1, d2_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space1, d3_space1);
    VERIFY(ext_equal, TRUE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space1, d3_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space1, d3_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space1, d3_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");

    /* Compare larger 2-D dataspace w/no max. dims against all others, including itself */
    ext_equal = H5Sextent_equal(d3_space2, null_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space2, scalar_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space2, d1_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space2, d1_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space2, d1_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space2, d1_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space2, d2_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space2, d2_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space2, d2_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space2, d2_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space2, d3_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space2, d3_space2);
    VERIFY(ext_equal, TRUE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space2, d3_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space2, d3_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");

    /* Compare small 2-D dataspace w/fixed max. dims against all others, including itself */
    ext_equal = H5Sextent_equal(d3_space3, null_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space3, scalar_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space3, d1_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space3, d1_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space3, d1_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space3, d1_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space3, d2_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space3, d2_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space3, d2_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space3, d2_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space3, d3_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space3, d3_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space3, d3_space3);
    VERIFY(ext_equal, TRUE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space3, d3_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");

    /* Compare small 2-D dataspace w/unlimited max. dims against all others, including itself */
    ext_equal = H5Sextent_equal(d3_space4, null_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space4, scalar_space);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space4, d1_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space4, d1_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space4, d1_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space4, d1_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space4, d2_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space4, d2_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space4, d2_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space4, d2_space4);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space4, d3_space1);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space4, d3_space2);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space4, d3_space3);
    VERIFY(ext_equal, FALSE, "H5Sextent_equal");
    ext_equal = H5Sextent_equal(d3_space4, d3_space4);
    VERIFY(ext_equal, TRUE, "H5Sextent_equal");

    /* Close dataspaces */
    ret = H5Sclose(null_space);
    CHECK(ret, FAIL, "H5Sclose");

    ret = H5Sclose(scalar_space);
    CHECK(ret, FAIL, "H5Sclose");

    ret = H5Sclose(d1_space1);
    CHECK(ret, FAIL, "H5Sclose");
    ret = H5Sclose(d1_space2);
    CHECK(ret, FAIL, "H5Sclose");
    ret = H5Sclose(d1_space3);
    CHECK(ret, FAIL, "H5Sclose");
    ret = H5Sclose(d1_space4);
    CHECK(ret, FAIL, "H5Sclose");

    ret = H5Sclose(d2_space1);
    CHECK(ret, FAIL, "H5Sclose");
    ret = H5Sclose(d2_space2);
    CHECK(ret, FAIL, "H5Sclose");
    ret = H5Sclose(d2_space3);
    CHECK(ret, FAIL, "H5Sclose");
    ret = H5Sclose(d2_space4);
    CHECK(ret, FAIL, "H5Sclose");

    ret = H5Sclose(d3_space1);
    CHECK(ret, FAIL, "H5Sclose");
    ret = H5Sclose(d3_space2);
    CHECK(ret, FAIL, "H5Sclose");
    ret = H5Sclose(d3_space3);
    CHECK(ret, FAIL, "H5Sclose");
    ret = H5Sclose(d3_space4);
    CHECK(ret, FAIL, "H5Sclose");
} /* test_h5s_extent_equal() */

/****************************************************************
**
**  test_h5s_extent_copy(): Exercise extent copy code
**
****************************************************************/
static void
test_h5s_extent_copy(void)
{
    hid_t spaces[14] = {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1}; /* Array of all dataspaces */
    hid_t tmp_space = -1;
    hsize_t d1_dims1[1] = {10}, /* 1-D dimensions */
        d1_dims2[1] = {20},
        d1_dims3[1] = {H5S_UNLIMITED};
    hsize_t d2_dims1[2] = {10, 10},             /* 2-D dimensions */
        d2_dims2[2] = {20, 20},
        d2_dims3[2] = {H5S_UNLIMITED, H5S_UNLIMITED};
    hsize_t d3_dims1[3] = {10, 10, 10},         /* 3-D dimensions */
        d3_dims2[3] = {20, 20, 20},
        d3_dims3[3] = {H5S_UNLIMITED, H5S_UNLIMITED, H5S_UNLIMITED};
    hsize_t npoints[14];        /* Expected number of points in selection for each element in spaces */
    hssize_t npoints_ret;       /* Number of points returned by H5Sget_select_npoints() */
    htri_t ext_equal;           /* Whether two dataspace extents are equal */
    const unsigned num_spaces = sizeof(spaces) / sizeof(spaces[0]);
    unsigned i, j;
    herr_t ret;                 /* Generic error return */

    /* Create dataspaces */
    spaces[0] = H5Screate(H5S_NULL);
    CHECK(spaces[0], FAIL, "H5Screate");
    npoints[0] = (hsize_t)0;

    spaces[1] = H5Screate(H5S_SCALAR);
    CHECK(spaces[1], FAIL, "H5Screate");
    npoints[1] = (hsize_t)1;

    spaces[2] = H5Screate_simple(1, d1_dims1, NULL);
    CHECK(spaces[2], FAIL, "H5Screate");
    npoints[2] = d1_dims1[0];
    spaces[3] = H5Screate_simple(1, d1_dims2, NULL);
    CHECK(spaces[3], FAIL, "H5Screate");
    npoints[3] = d1_dims2[0];
    spaces[4] = H5Screate_simple(1, d1_dims1, d1_dims2);
    CHECK(spaces[4], FAIL, "H5Screate");
    npoints[4] = d1_dims1[0];
    spaces[5] = H5Screate_simple(1, d1_dims1, d1_dims3);
    CHECK(spaces[5], FAIL, "H5Screate");
    npoints[5] = d1_dims1[0];

    spaces[6] = H5Screate_simple(2, d2_dims1, NULL);
    CHECK(spaces[6], FAIL, "H5Screate");
    npoints[6] = d2_dims1[0] * d2_dims1[1];
    spaces[7] = H5Screate_simple(2, d2_dims2, NULL);
    CHECK(spaces[7], FAIL, "H5Screate");
    npoints[7] = d2_dims2[0] * d2_dims2[1];
    spaces[8] = H5Screate_simple(2, d2_dims1, d2_dims2);
    CHECK(spaces[8], FAIL, "H5Screate");
    npoints[8] = d2_dims1[0] * d2_dims1[1];
    spaces[9] = H5Screate_simple(2, d2_dims1, d2_dims3);
    CHECK(spaces[9], FAIL, "H5Screate");
    npoints[9] = d2_dims1[0] * d2_dims1[1];

    spaces[10] = H5Screate_simple(3, d3_dims1, NULL);
    CHECK(spaces[10], FAIL, "H5Screate");
    npoints[10] = d3_dims1[0] * d3_dims1[1] * d3_dims1[2];
    spaces[11] = H5Screate_simple(3, d3_dims2, NULL);
    CHECK(spaces[11], FAIL, "H5Screate");
    npoints[11] = d3_dims2[0] * d3_dims2[1] * d3_dims2[2];
    spaces[12] = H5Screate_simple(3, d3_dims1, d3_dims2);
    CHECK(spaces[12], FAIL, "H5Screate");
    npoints[12] = d3_dims1[0] * d3_dims1[1] * d3_dims1[2];
    spaces[13] = H5Screate_simple(3, d3_dims1, d3_dims3);
    CHECK(spaces[13], FAIL, "H5Screate");
    npoints[13] = d3_dims1[0] * d3_dims1[1] * d3_dims1[2];

    tmp_space = H5Screate(H5S_NULL);
    CHECK(tmp_space, FAIL, "H5Screate");

    /* Copy between all dataspace combinations.  Note there are a few
     * duplicates. */
    for(i = 0; i < num_spaces; i++)
        for(j = i; j < num_spaces; j++) {
            /* Copy from i to j, unless the inner loop just restarted, in which
             * case i and j are the same, so the second call to H5Sextent_copy()
             * will test copying from i/j to i/j */
            ret = H5Sextent_copy(tmp_space, spaces[j]);
            CHECK(ret, FAIL, "H5Sextent_copy");

            /* Verify that the extents are equal */
            ext_equal = H5Sextent_equal(tmp_space, spaces[j]);
            VERIFY(ext_equal, TRUE, "H5Sextent_equal");

            /* Verify that the correct number of elements is selected */
            npoints_ret = H5Sget_select_npoints(tmp_space);
            VERIFY((hsize_t)npoints_ret, npoints[j], "H5Sget_select_npoints");

            /* Copy from j to i */
            ret = H5Sextent_copy(tmp_space, spaces[i]);
            CHECK(ret, FAIL, "H5Sextent_copy");

            /* Verify that the extents are equal */
            ext_equal = H5Sextent_equal(tmp_space, spaces[i]);
            VERIFY(ext_equal, TRUE, "H5Sextent_equal");

            /* Verify that the correct number of elements is selected */
            npoints_ret = H5Sget_select_npoints(tmp_space);
            VERIFY((hsize_t)npoints_ret, npoints[i], "H5Sget_select_npoints");
        } /* end for */

    /* Close dataspaces */
    for(i = 0; i < num_spaces; i++) {
        ret = H5Sclose(spaces[i]);
        CHECK(ret, FAIL, "H5Sclose");
        spaces[i] = -1;
    } /* end for */

    ret = H5Sclose(tmp_space);
    CHECK(ret, FAIL, "H5Sclose");
} /* test_h5s_extent_copy() */

/****************************************************************
**
**  test_h5s_bug1(): Test Creating dataspace with H5Screate then
*                    setting extent with H5Sextent_copy.
**
****************************************************************/
static void
test_h5s_bug1(void)
{
    hid_t space1;               /* Dataspace to copy extent to */
    hid_t space2;               /* Scalar dataspace */
    hsize_t dims[2] = {10, 10}; /* Dimensions */
    hsize_t start[2] = {0, 0};  /* Hyperslab start */
    htri_t select_valid;        /* Whether the dataspace selection is valid */
    herr_t ret;                 /* Generic error return */

    /* Create dataspaces */
    space1 = H5Screate(H5S_SIMPLE);
    CHECK(space1, FAIL, "H5Screate");
    space2 = H5Screate_simple(2, dims, NULL);
    CHECK(space2, FAIL, "H5Screate");

    /* Copy extent to space1 */
    ret = H5Sextent_copy(space1, space2);
    CHECK(ret, FAIL, "H5Sextent_copy");

    /* Select hyperslab in space1 containing entire extent */
    ret = H5Sselect_hyperslab(space1, H5S_SELECT_SET, start, NULL, dims, NULL);
    CHECK(ret, FAIL, "H5Sselect_hyperslab");

    /* Check that space1's selection is valid */
    select_valid = H5Sselect_valid(space1);
    CHECK(select_valid, FAIL, "H5Sselect_valid");
    VERIFY(select_valid, TRUE, "H5Sselect_valid result");

    /* Close dataspaces */
    ret = H5Sclose(space1);
    CHECK(ret, FAIL, "H5Sclose");
    ret = H5Sclose(space2);
    CHECK(ret, FAIL, "H5Sclose");
} /* test_h5s_bug1() */


/*-------------------------------------------------------------------------
 * Function:    test_versionbounds
 *
 * Purpose:     Tests version bounds with dataspace.
 *
 * Description:
 *              This function creates a file with lower bounds then later
 *              reopens it with higher bounds to show that the dataspace
 *              version is upgraded appropriately.
 *
 * Return:      Success:    0
 *              Failure:    number of errors
 *
 *-------------------------------------------------------------------------
 */
#define VERBFNAME       "tverbounds_dspace.h5"
#define BASIC_DSET      "Basic Dataset"
#define LATEST_DSET     "Latest Dataset"
static void
test_versionbounds(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 dset_space = -1;  /* Retrieved dataset's dataspace ID */
    hsize_t dim[1];         /* Dataset dimensions */
    H5F_libver_t low, high; /* File format bounds */
    H5S_t *spacep = NULL;   /* Pointer to internal dataspace */
    herr_t ret = 0;         /* Generic return value */

    /* Output message about test being performed */
    MESSAGE(5, ("Testing Version Bounds\n"));

    /* Create a file access property list */
    fapl = H5Pcreate(H5P_FILE_ACCESS);
    CHECK(fapl, FAIL, "H5Pcreate");

    /* Create dataspace */
    dim[0] = 10;
    space = H5Screate_simple(1, dim, NULL);
    CHECK(space, FAIL, "H5Screate");

    /* Its version should be H5O_SDSPACE_VERSION_1 */
    spacep = (H5S_t *)H5I_object(space);
    CHECK(spacep, NULL, "H5I_object");
    VERIFY(spacep->extent.version, H5O_SDSPACE_VERSION_1, "basic dataspace version bound");

    /* Set high bound to V18 */
    low = H5F_LIBVER_EARLIEST;
    high = H5F_LIBVER_V18;
    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 a basic dataset */
    dset = H5Dcreate2(file, BASIC_DSET, H5T_NATIVE_INT, space, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
    if (dset > 0) /* dataset created successfully */
    {
        /* Get the internal dataspace pointer */
        dset_space = H5Dget_space(dset);
        CHECK(dset_space, FAIL, "H5Dget_space");
        spacep = (H5S_t *)H5I_object(dset_space);
        CHECK(spacep, NULL, "H5I_object");

        /* Dataspace version should remain as H5O_SDSPACE_VERSION_1 */
        VERIFY(spacep->extent.version, H5O_SDSPACE_VERSION_1, "basic dataspace version bound");

        /* Close dataspace */
        ret = H5Sclose(dset_space);
        CHECK(ret, FAIL, "H5Sclose");
    }

    /* Close basic dataset and the file */
    ret = H5Dclose(dset);
    CHECK(ret, FAIL, "H5Dclose");
    ret = H5Fclose(file);
    CHECK(ret, FAIL, "H5Fclose");

    /* Set low and high bounds to latest to trigger the increment of the
       dataspace version */
    low = H5F_LIBVER_LATEST;
    high = H5F_LIBVER_LATEST;
    ret = H5Pset_libver_bounds(fapl, low, high);
    CHECK(ret, FAIL, "H5Pset_libver_bounds");

    /* Reopen the file with new version bounds, LATEST/LATEST */
    file = H5Fopen(VERBFNAME, H5F_ACC_RDWR, fapl);

    /* Create another dataset using the same dspace as the previous dataset */
    dset = H5Dcreate2(file, LATEST_DSET, H5T_NATIVE_INT, space, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
    CHECK(dset, FAIL, "H5Dcreate2");

    /* Dataset created successfully.  Verify that dataspace version has been
       upgraded per the low bound */

    /* Get the internal dataspace pointer */
    dset_space = H5Dget_space(dset);
    CHECK(dset_space, FAIL, "H5Dget_space");
    spacep = (H5S_t *)H5I_object(dset_space);
    CHECK(spacep, NULL, "H5I_object");

    /* Verify the dataspace version */
    VERIFY(spacep->extent.version, H5O_sdspace_ver_bounds[low], "upgraded dataspace version");

    /* Close everything */
    ret = H5Sclose(dset_space);
    CHECK(ret, FAIL, "H5Sclose");
    ret = H5Dclose(dset);
    CHECK(ret, FAIL, "H5Dclose");

    ret = H5Sclose(space);
    CHECK(ret, FAIL, "H5Sclose");
    ret = H5Pclose(fapl);
    CHECK(ret, FAIL, "H5Pclose");
    ret = H5Fclose(file);
    CHECK(ret, FAIL, "H5Fclose");
} /* end test_versionbounds() */


/****************************************************************
**
**  test_h5s(): Main H5S (dataspace) testing routine.
**
****************************************************************/
void
test_h5s(void)
{
    H5F_libver_t low, high;     /* Low and high bounds */

    /* Output message about test being performed */
    MESSAGE(5, ("Testing Dataspaces\n"));

    test_h5s_basic();           /* Test basic H5S code */
    test_h5s_null();            /* Test Null dataspace H5S code */
    test_h5s_zero_dim();        /* Test dataspace with zero dimension size */

    /* 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++) {

            /* Invalid combinations, just continue */
            if(high == H5F_LIBVER_EARLIEST || high < low)
                continue;

            test_h5s_encode(low, high);                 /* Test encoding and decoding */
            test_h5s_encode_regular_hyper(low, high);   /* Test encoding regular hyperslabs */
            test_h5s_encode_irregular_hyper(low, high); /* Test encoding irregular hyperslabs */
            test_h5s_encode_points(low, high);          /* Test encoding points */

        } /* end high bound */
    } /* end low bound */

    test_h5s_encode_length();   /* Test version 2 hyperslab encoding length is correct */
#ifndef H5_NO_DEPRECATED_SYMBOLS
    test_h5s_encode1();         /* Test operations with old API routine (H5Sencode1) */
#endif /* H5_NO_DEPRECATED_SYMBOLS */

    test_h5s_scalar_write();    /* Test scalar H5S writing code */
    test_h5s_scalar_read();     /* Test scalar H5S reading code */

    test_h5s_compound_scalar_write();    /* Test compound datatype scalar H5S writing code */
    test_h5s_compound_scalar_read();    /* Test compound datatype scalar H5S reading code */

    /* This test was added later to exercise a bug in chunked I/O */
    test_h5s_chunk();            /* Exercise bug fix for chunked I/O */

    test_h5s_extent_equal();    /* Test extent comparison code */
    test_h5s_extent_copy();     /* Test extent copy code */
    test_h5s_bug1();            /* Test bug in offset initialization */
    test_versionbounds();       /* Test version bounds with dataspace */
} /* test_h5s() */


/*-------------------------------------------------------------------------
 * Function:    cleanup_h5s
 *
 * Purpose:    Cleanup temporary test files
 *
 * Return:    none
 *
 * Programmer:    Albert Cheng
 *              July 2, 1998
 *
 * Modifications:
 *
 *-------------------------------------------------------------------------
 */
void
cleanup_h5s(void)
{
    remove(DATAFILE);
    remove(NULLFILE);
    remove(BASICFILE);
    remove(ZEROFILE);
    remove(VERBFNAME);
}