[svn-r6017] Description:

    Renamed h5dumptst.c to h5dumpgentest.c.
    Added a test to run h5dumpgentest to make it can run without error.  Note
    that this does not verify if it is generating the correct test files.
Platforms tested:
    Tested h5committest {arabica (fortran), eirene (fortran, C++)
	modi4 (parallel, fortran)}? YES
Misc. update:
    Update MANIFEST if you add or remove any file. YES

1 files changed, 2893 insertions, 0 deletions

diff --git a/tools/h5dump/h5dumpgentest.c b/tools/h5dump/h5dumpgentest.c
new file mode 100644
index 0000000..8f6e3bc
--- /dev/null
+++ b/tools/h5dump/h5dumpgentest.c
@@ -0,0 +1,2893 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * 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 files COPYING and Copyright.html.  COPYING can be found at the root   *
+ * of the source code distribution tree; Copyright.html can be found at the  *
+ * root level of an installed copy of the electronic HDF5 document set and   *
+ * is linked from the top-level documents page.  It can also be found at     *
+ * http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html.  If you do not have     *
+ * access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/*
+ * Generate the binary hdf5 files for the h5dump tests.
+ * Usage: just execute the program without any arguments will
+ * generate all the binary hdf5 files in the local directory.
+ *
+ * If you regenerate the test files (e.g., changing some code,
+ * trying it on a new platform, ...), you need to verify the correctness
+ * of the expected output and update the corresponding *.ddl files.
+ */
+#include <limits.h>
+
+#include "hdf5.h"
+#include "H5private.h"
+
+#define FILE1	"tgroup.h5"
+#define FILE2	"tdset.h5"
+#define FILE3	"tattr.h5"
+#define FILE4	"tslink.h5"
+#define FILE5	"thlink.h5"
+#define FILE6	"tcompound.h5"
+#define FILE7	"tall.h5"
+#define FILE8	"tdset2.h5"
+#define FILE9	"tcompound2.h5"
+#define FILE10	"tloop.h5"
+#define FILE11	"tloop2.h5"
+#define FILE12	"tmany.h5"
+#define FILE13	"tstr.h5"
+#define FILE14	"tstr2.h5"
+#define FILE15	"tenum.h5"
+#define FILE16	"tobjref.h5"
+#define FILE17	"tdatareg.h5"
+#define FILE18	"tnestedcomp.h5"
+#define FILE19	"topaque.h5"
+#define FILE20	"tbitfields.h5"
+#define FILE21	"tvldtypes1.h5"
+#define FILE22	"tvldtypes2.h5"
+#define FILE23	"tvldtypes3.h5"
+#define FILE24	"tvldtypes4.h5"
+#define FILE25	"tarray1.h5"
+#define FILE26	"tarray2.h5"
+#define FILE27	"tarray3.h5"
+#define FILE28	"tarray4.h5"
+#define FILE29	"tarray5.h5"
+#define FILE30	"tarray6.h5"
+#define FILE31	"tarray7.h5"
+#define FILE32	"tempty.h5"
+#define FILE33  "tgrp_comments.h5"
+#define FILE34  "tsplit_file"
+#define FILE35  "tfamily%05d.h5"
+#define FILE36  "tmulti"
+#define FILE37  "tlarge_objname.h5"
+
+#define LENSTR		50
+#define LENSTR2		11
+
+#define SPACE2_RANK	2
+#define SPACE2_DIM1	10
+#define SPACE2_DIM2	10
+
+#define SPACE1_RANK	1
+#define SPACE1_DIM1	4
+
+/* Element selection information */
+#define POINT1_NPOINTS	10
+
+typedef enum{
+     RED,
+     GREEN,
+     BLUE,
+     WHITE,
+     BLACK
+} enumtype;
+
+/* Compound datatype */
+typedef struct s1_t {
+    unsigned int a;
+    unsigned int b;
+    float c;
+} s1_t;
+
+
+/* 1-D array datatype */
+#define ARRAY1_RANK	1
+#define ARRAY1_DIM1 4
+
+/* 3-D array datatype */
+#define ARRAY2_RANK	3
+#define ARRAY2_DIM1 3
+#define ARRAY2_DIM2 4
+#define ARRAY2_DIM3 5
+
+/* 2-D array datatype */
+#define ARRAY3_RANK	2
+#define ARRAY3_DIM1 6
+#define ARRAY3_DIM2 3
+
+static void gent_group(void)
+{
+    hid_t fid, group;
+  
+    fid = H5Fcreate(FILE1, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+  
+    /* / */
+    group = H5Gcreate (fid, "/g1", 0);
+    H5Gclose(group);
+    group = H5Gcreate (fid, "/g2", 0);
+    H5Gclose(group);
+    group = H5Gcreate (fid, "/g3", 0);
+    H5Gclose(group);
+  
+    /* /g1 */
+    group = H5Gcreate (fid, "/g1/g1.1", 0);
+    H5Gclose(group);
+    group = H5Gcreate (fid, "/g1/g1.2", 0);
+    H5Gclose(group);
+  
+    /* /g2 */
+    group = H5Gcreate (fid, "/g2/g2.1", 0);
+    H5Gclose(group);
+  
+    /* /g3 */
+    group = H5Gcreate (fid, "/g3/g3.1", 0);
+    H5Gclose(group);
+    group = H5Gcreate (fid, "/g3/g3.2", 0);
+    H5Gclose(group);
+    group = H5Gcreate (fid, "/g3/g3.3", 0);
+    H5Gclose(group);
+    group = H5Gcreate (fid, "/g3/g3.4", 0);
+    H5Gclose(group);
+  
+    /* /g2/g2.1 */
+    group = H5Gcreate (fid, "/g2/g2.1/g2.1.1", 0);
+    H5Gclose(group);
+    group = H5Gcreate (fid, "/g2/g2.1/g2.1.2", 0);
+    H5Gclose(group);
+    group = H5Gcreate (fid, "/g2/g2.1/g2.1.3", 0);
+    H5Gclose(group);
+  
+    H5Fclose(fid);
+}
+
+static void gent_dataset(void)
+{
+    hid_t fid, dataset, space;
+    hsize_t dims[2];
+    int dset1[10][20];
+    double dset2[30][20];
+    int i, j;
+  
+    fid = H5Fcreate(FILE2, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+  
+    /* dset1 */
+    dims[0] = 10; dims[1] = 20;
+    space = H5Screate_simple(2, dims, NULL);
+    dataset = H5Dcreate(fid, "/dset1", H5T_STD_I32BE, space, H5P_DEFAULT);
+
+    for (i = 0; i < 10; i++)
+         for (j = 0; j < 20; j++)
+              dset1[i][j] = j+i;
+
+    H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset1);
+    H5Sclose(space);
+    H5Dclose(dataset);
+  
+    /* dset2 */
+    dims[0] = 30; dims[1] = 20;
+    space = H5Screate_simple(2, dims, NULL);
+    dataset = H5Dcreate(fid, "/dset2", H5T_IEEE_F64BE, space, H5P_DEFAULT);
+
+    for (i = 0; i < 30; i++)
+         for (j = 0; j < 20; j++)
+              dset2[i][j] = 0.0001*j+i;
+
+    H5Dwrite(dataset, H5T_NATIVE_DOUBLE, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset2);
+  
+    H5Sclose(space);
+    H5Dclose(dataset);
+    H5Fclose(fid);
+}
+
+static void gent_dataset2(void)
+{
+    hid_t fid, dataset, space, create_plist;
+    hsize_t dims[2];
+    hsize_t maxdims[2];
+    int dset1[10][20];
+    double dset2[30][10];
+    int i, j;
+  
+    fid = H5Fcreate(FILE8, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+    create_plist = H5Pcreate(H5P_DATASET_CREATE);
+    dims[0] = 5; dims[1] = 5;
+    H5Pset_chunk(create_plist, 2, dims);
+  
+    /* dset1 */
+    dims[0] = 10; dims[1] = 20;
+    maxdims[0] = H5S_UNLIMITED; maxdims[1] = 20;
+    space = H5Screate_simple(2, dims,  maxdims);
+    dataset = H5Dcreate(fid, "/dset1", H5T_STD_I32BE, space, create_plist);
+
+    for (i = 0; i < 10; i++)
+         for (j = 0; j < 20; j++)
+              dset1[i][j] = j;
+
+    H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset1);
+    H5Sclose(space);
+    H5Dclose(dataset);
+  
+    /* dset2 */
+    dims[0] = 30; dims[1] = 10;
+    maxdims[0] = 30; maxdims[1] = H5S_UNLIMITED;
+    space = H5Screate_simple(2, dims, maxdims);
+    dataset = H5Dcreate(fid, "/dset2", H5T_IEEE_F64BE, space, create_plist);
+
+    for (i = 0; i < 30; i++)
+         for (j = 0; j < 10; j++)
+              dset2[i][j] = j;
+
+    H5Dwrite(dataset, H5T_NATIVE_DOUBLE, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset2);
+
+    H5Sclose(space);
+    H5Dclose(dataset);
+    H5Pclose(create_plist);
+    H5Fclose(fid);
+}
+
+
+static void gent_attribute(void)
+{
+    hid_t fid, root, space, attr, type;
+    hsize_t dims[2];
+    char buf[60];
+    int i, data[10];
+    double d[10];
+    char string[]= "string attribute";
+    int point = 100;
+  
+    fid = H5Fcreate(FILE3, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+    root = H5Gopen (fid, "/");
+  
+    /* attribute 1 */
+    dims[0] = 24;
+    space = H5Screate_simple(1, dims, NULL);
+    attr = H5Acreate (root, "attr1", H5T_STD_I8BE, space, H5P_DEFAULT);
+    sprintf(buf, "attribute of root group");
+    H5Awrite(attr, H5T_NATIVE_SCHAR, buf);
+    H5Sclose(space);
+    H5Aclose(attr);
+  
+    /* attribute 2 */
+    dims[0] = 10;
+    space = H5Screate_simple(1, dims, NULL);
+    attr = H5Acreate (root, "attr2", H5T_STD_I32BE, space, H5P_DEFAULT);
+
+    for (i = 0; i < 10; i++) data[i] = i+1;
+
+    H5Awrite(attr, H5T_NATIVE_INT, data);
+    H5Sclose(space);
+    H5Aclose(attr);
+  
+    /* attribute 3 */
+    dims[0] = 10;
+    space = H5Screate_simple(1, dims, NULL);
+    attr = H5Acreate (root, "attr3", H5T_IEEE_F64BE, space, H5P_DEFAULT);
+
+    for (i = 0; i < 10; i++) d[i] = 0.1 * i;
+
+    H5Awrite(attr, H5T_NATIVE_DOUBLE, d);
+    H5Sclose(space);
+    H5Aclose(attr);
+  
+    /* attribute 4 */
+    space = H5Screate(H5S_SCALAR);
+    attr = H5Acreate (root, "attr4", H5T_STD_I32BE, space, H5P_DEFAULT);
+    H5Awrite(attr, H5T_NATIVE_INT, &point);
+    H5Sclose(space);
+    H5Aclose(attr);
+  
+    /* attribute 5 */
+    space = H5Screate(H5S_SCALAR);
+    type = H5Tcopy(H5T_C_S1);
+    H5Tset_size(type, 17);
+    attr = H5Acreate (root, "attr5", type, space, H5P_DEFAULT);
+    H5Awrite(attr, type, string);
+
+    H5Tclose(type);
+    H5Sclose(space);
+    H5Aclose(attr);
+    H5Gclose(root);
+    H5Fclose(fid);
+}
+
+static void gent_softlink(void)
+{
+    hid_t fid, root;
+  
+    fid = H5Fcreate(FILE4, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+    root = H5Gopen (fid, "/");
+    H5Glink (root, H5G_LINK_SOFT, "somevalue", "slink1");
+    H5Glink (root, H5G_LINK_SOFT, "linkvalue", "slink2");
+
+    H5Gclose(root);
+    H5Fclose(fid);
+}
+
+/*
+            /
+
+       /    |   \      the dataset is hardlinked to three names
+                       /dset1, /g1/dset2, and /g1/g1.1/dset3
+     dset1 g1    g2
+                       /g2 and /g1/g1.1 are hardlinked to the same object.
+          /  \
+       dset2 g1.1
+              |
+             dset3
+*/
+
+static void gent_hardlink(void)
+{
+    hid_t fid, group, dataset, space;
+    hsize_t dim = 5;
+    int i, dset[5];
+  
+    fid = H5Fcreate(FILE5, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+  
+    space = H5Screate_simple(1, &dim, NULL);
+    dataset = H5Dcreate(fid, "/dset1", H5T_STD_I32BE, space, H5P_DEFAULT);
+
+    for (i = 0; i < 5; i++) dset[i] = i;
+
+    H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset);
+    H5Sclose(space);
+    H5Dclose(dataset);
+  
+    group = H5Gcreate (fid, "/g1", 0);
+    H5Glink (group, H5G_LINK_HARD, "/dset1", "dset2");
+    H5Gclose(group);
+  
+    group = H5Gcreate (fid, "/g2", 0);
+    H5Glink (group, H5G_LINK_HARD, "/dset1", "dset3");
+    H5Gclose(group);
+  
+    group = H5Gopen(fid, "/g1");
+    H5Glink (group, H5G_LINK_HARD, "/g2", "g1.1");
+    H5Gclose(group);
+    H5Fclose(fid);
+}
+
+/*
+               /
+     /     |       \     \
+   dset1  group1  type1 type2
+           |
+          dset2
+
+*/
+static void gent_compound_dt(void) {       /* test compound data type */
+    hid_t fid, group, dataset, space, space3, type, type2;
+    hid_t array_dt;
+    typedef struct {
+      int a;
+      float b;
+      double c;
+    } dset1_t;
+    dset1_t dset1[5];
+
+    typedef struct {
+      int a;
+      float b;
+    } dset2_t;
+    dset2_t dset2[5];
+
+    typedef struct {
+      int a[4];
+      float b[5][6];
+    } dset3_t;
+    dset3_t dset3[3][6];
+
+    typedef struct {
+      int a;
+      float b;
+    } dset4_t;
+    dset4_t dset4[5];
+
+    typedef struct {
+      int a;
+      float b;
+    } dset5_t;
+    dset5_t dset5[5];
+
+    int i, j, k, l, ndims;
+    hsize_t dim[2];
+
+    hsize_t sdim = 5;
+    hsize_t dset3_dim[2];
+
+  
+  for (i = 0; i < (int)sdim; i++) {
+       dset1[i].a = i; 
+       dset1[i].b = (float)(i*i);
+       dset1[i].c = (float)(1./(i+1));
+       
+       dset2[i].a = i;
+       dset2[i].b = (float)(i+ i*0.1);
+
+       dset4[i].a = i;
+       dset4[i].b = (float)(i+3);
+
+       dset5[i].a = i;
+       dset5[i].b = (float)(i*0.1);
+  }
+
+
+  fid = H5Fcreate(FILE6, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+  space = H5Screate_simple(1, &sdim, NULL);
+
+  type = H5Tcreate (H5T_COMPOUND, sizeof(dset1[0]));
+  type2 = H5Tcreate(H5T_COMPOUND, sizeof(dset1[0])); 
+  H5Tinsert(type, "a_name", HOFFSET(dset1_t, a), H5T_STD_I32BE);
+  H5Tinsert(type, "b_name", HOFFSET(dset1_t, b), H5T_IEEE_F32BE);
+  H5Tinsert(type, "c_name", HOFFSET(dset1_t, c), H5T_IEEE_F64BE);
+  H5Tinsert(type2, "a_name", HOFFSET(dset1_t, a), H5T_NATIVE_INT);
+  H5Tinsert(type2, "b_name", HOFFSET(dset1_t, b), H5T_NATIVE_FLOAT);
+  H5Tinsert(type2, "c_name", HOFFSET(dset1_t, c), H5T_NATIVE_DOUBLE);
+  dataset = H5Dcreate(fid, "/dset1", type, space, H5P_DEFAULT);
+  H5Dwrite(dataset, type2, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset1);
+  H5Tclose(type2);
+  H5Tclose(type);
+  H5Dclose(dataset);
+
+  /* shared data type 1 */
+  type = H5Tcreate (H5T_COMPOUND, sizeof(dset2_t));
+  H5Tinsert(type, "int_name", HOFFSET(dset2_t, a), H5T_STD_I32BE);
+  H5Tinsert(type, "float_name", HOFFSET(dset2_t, b), H5T_IEEE_F32BE);
+  H5Tcommit(fid, "type1", type);
+  type2 = H5Tcreate (H5T_COMPOUND, sizeof(dset2_t));
+  H5Tinsert(type2, "int_name", HOFFSET(dset2_t, a), H5T_NATIVE_INT);
+  H5Tinsert(type2, "float_name", HOFFSET(dset2_t, b), H5T_NATIVE_FLOAT);
+  group = H5Gcreate (fid, "/group1", 0);
+
+  dataset = H5Dcreate(group, "dset2", type, space, H5P_DEFAULT);
+  H5Dwrite(dataset, type2, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset2);
+  H5Tclose(type2);
+  H5Tclose(type);
+  H5Dclose(dataset);
+
+
+  /* shared data type 2 */
+  type = H5Tcreate (H5T_COMPOUND, sizeof(dset3_t));
+  type2 = H5Tcreate (H5T_COMPOUND, sizeof(dset3_t));
+
+  ndims = 1; dim[0] = 4;
+
+  array_dt=H5Tarray_create(H5T_STD_I32BE,ndims,dim,NULL);
+  H5Tinsert(type, "int_array", HOFFSET(dset3_t, a), array_dt);
+  H5Tclose(array_dt);
+
+  array_dt=H5Tarray_create(H5T_NATIVE_INT,ndims,dim,NULL);
+  H5Tinsert(type2, "int_array", HOFFSET(dset3_t, a), array_dt);
+  H5Tclose(array_dt);
+
+  ndims = 2; dim[0] = 5; dim[1] = 6;
+
+  array_dt=H5Tarray_create(H5T_IEEE_F32BE,ndims,dim,NULL);
+  H5Tinsert(type, "float_array", HOFFSET(dset3_t, b), array_dt);
+  H5Tclose(array_dt);
+
+  array_dt=H5Tarray_create(H5T_NATIVE_FLOAT,ndims,dim,NULL);
+  H5Tinsert(type2, "float_array", HOFFSET(dset3_t, b), array_dt);
+  H5Tclose(array_dt);
+
+  H5Tcommit(fid, "type2", type);
+
+
+  dset3_dim[0] = 3;  dset3_dim[1] = 6;
+  space3 = H5Screate_simple(2, dset3_dim, NULL);
+  dataset = H5Dcreate(group, "dset3", type, space3, H5P_DEFAULT);
+  for (i = 0; i < (int)dset3_dim[0]; i++) {
+       for (j = 0; j < (int)dset3_dim[1]; j++) {
+            for (k = 0; k < 4; k++)
+                 dset3[i][j].a[k] = k+j+i;
+            for (k = 0; k < 5; k++)
+                 for (l = 0; l < 6; l++)
+                      dset3[i][j].b[k][l] = (float)((k+1)+l+j+i);
+       }
+  }
+  H5Dwrite(dataset, type2, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset3);
+  H5Sclose(space3);
+  H5Tclose(type);
+  H5Tclose(type2);
+  H5Dclose(dataset);
+
+  /* shared data type 3 */
+  type = H5Tcreate (H5T_COMPOUND, sizeof(dset4_t));
+  type2 = H5Tcreate (H5T_COMPOUND, sizeof(dset4_t));
+  H5Tinsert(type, "int", HOFFSET(dset4_t, a), H5T_STD_I32BE);
+  H5Tinsert(type, "float", HOFFSET(dset4_t, b), H5T_IEEE_F32BE);
+  H5Tcommit(group, "type3", type);
+  H5Tinsert(type2, "int", HOFFSET(dset4_t, a), H5T_NATIVE_INT);
+  H5Tinsert(type2, "float", HOFFSET(dset4_t, b), H5T_NATIVE_FLOAT);
+  dataset = H5Dcreate(group, "dset4", type, space, H5P_DEFAULT);
+  H5Dwrite(dataset, type2, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset4);
+
+  H5Tclose(type);
+  H5Tclose(type2);
+  H5Dclose(dataset);
+  H5Gclose(group);
+
+
+  /* unamed data type */
+  group = H5Gcreate (fid, "/group2", 0);
+
+  type = H5Tcreate (H5T_COMPOUND, sizeof(dset5_t));
+  H5Tinsert(type, "int", HOFFSET(dset5_t, a), H5T_STD_I32BE);
+  H5Tinsert(type, "float", HOFFSET(dset5_t, b), H5T_IEEE_F32BE);
+  H5Tcommit(group, "type4", type);
+  type2 = H5Tcreate (H5T_COMPOUND, sizeof(dset5_t));
+  H5Tinsert(type2, "int", HOFFSET(dset5_t, a), H5T_NATIVE_INT);
+  H5Tinsert(type2, "float", HOFFSET(dset5_t, b), H5T_NATIVE_FLOAT);
+  dataset = H5Dcreate(group, "dset5", type, space, H5P_DEFAULT);
+  H5Dwrite(dataset, type2, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset5);
+
+  H5Gunlink(group,"type4");
+
+  H5Tclose(type);
+  H5Tclose(type2);
+  H5Dclose(dataset);
+  H5Sclose(space);
+  H5Gclose(group);
+
+  H5Fclose(fid);
+
+}
+
+/*
+               /
+     /     |       \     \
+   dset1  group1  type1 type2
+           |
+          dset2
+
+*/
+static void gent_compound_dt2(void) {       /* test compound data type */
+    hid_t fid, group, dataset, space, type, create_plist, type2;
+    hid_t array_dt;
+
+    typedef struct {
+      int a;
+      float b;
+      double c;
+    } dset1_t;
+    dset1_t dset1[10];
+
+    typedef struct {
+      int a;
+      float b;
+    } dset2_t;
+    dset2_t dset2[10];
+
+    typedef struct {
+      int a[4];
+      float b[5][6];
+    } dset3_t;
+
+    typedef struct {
+      int a;
+      float b;
+    } dset4_t;
+    dset4_t dset4[10];
+
+    typedef struct {
+      int a;
+      float b;
+    } dset5_t;
+    dset5_t dset5[10];
+
+    int i, ndims;
+    const int perm[2]={0,1};
+    hsize_t dim[2];
+
+    hsize_t sdim, maxdim;
+
+  sdim = 10;
+  for (i = 0; i < (int)sdim; i++) {
+       dset1[i].a = i; 
+       dset1[i].b = (float)(i*i);
+       dset1[i].c = (float)(1./(i+1));
+       
+       dset2[i].a = i;
+       dset2[i].b = (float)(i+ i*0.1);
+
+       dset4[i].a = i;
+       dset4[i].b = (float)(i*1.0);
+
+       dset5[i].a = i;
+       dset5[i].b = (float)(i*1.0);
+  }
+
+  fid = H5Fcreate(FILE9, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+  create_plist = H5Pcreate(H5P_DATASET_CREATE);
+
+  sdim = 2;
+  H5Pset_chunk(create_plist, 1, &sdim);
+
+  sdim = 6;
+  maxdim = H5S_UNLIMITED;
+
+  space = H5Screate_simple(1, &sdim, &maxdim);
+
+  type = H5Tcreate (H5T_COMPOUND, sizeof(dset1[0]));
+  
+  H5Tinsert(type, "a_name", HOFFSET(dset1_t, a), H5T_STD_I32BE);
+  H5Tinsert(type, "b_name", HOFFSET(dset1_t, b), H5T_IEEE_F32BE);
+  H5Tinsert(type, "c_name", HOFFSET(dset1_t, c), H5T_IEEE_F64BE);
+
+  dataset = H5Dcreate(fid, "/dset1", type, space, create_plist);
+
+  type2 = H5Tcreate (H5T_COMPOUND, sizeof(dset1[0]));
+  
+  H5Tinsert(type2, "a_name", HOFFSET(dset1_t, a), H5T_NATIVE_INT);
+  H5Tinsert(type2, "b_name", HOFFSET(dset1_t, b), H5T_NATIVE_FLOAT);
+  H5Tinsert(type2, "c_name", HOFFSET(dset1_t, c), H5T_NATIVE_DOUBLE);
+
+  H5Dwrite(dataset, type2, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset1);
+
+  H5Tclose(type);
+  H5Tclose(type2);
+  H5Sclose(space);
+  H5Dclose(dataset);
+
+  sdim = 6;
+  maxdim = 10;
+
+  space = H5Screate_simple(1, &sdim, &maxdim);
+
+  /* shared data type 1 */
+  type = H5Tcreate (H5T_COMPOUND, sizeof(dset2_t));
+  H5Tinsert(type, "int_name", HOFFSET(dset2_t, a), H5T_STD_I32BE);
+  H5Tinsert(type, "float_name", HOFFSET(dset2_t, b), H5T_IEEE_F32BE);
+  H5Tcommit(fid, "type1", type);
+
+  group = H5Gcreate (fid, "/group1", 0);
+
+  dataset = H5Dcreate(group, "dset2", type, space, create_plist);
+
+  type2 = H5Tcreate (H5T_COMPOUND, sizeof(dset2_t));
+  H5Tinsert(type2, "int_name", HOFFSET(dset2_t, a), H5T_NATIVE_INT);
+  H5Tinsert(type2, "float_name", HOFFSET(dset2_t, b), H5T_NATIVE_FLOAT); 
+  H5Dwrite(dataset, type2, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset2);
+
+  H5Tclose(type);
+  H5Tclose(type2);
+  H5Dclose(dataset);
+
+
+  /* shared data type 2 */
+  type = H5Tcreate (H5T_COMPOUND, sizeof(dset3_t));
+
+  ndims = 1; dim[0] = 4;
+  array_dt=H5Tarray_create(H5T_STD_I32BE,ndims,dim,perm);
+  H5Tinsert(type, "int_array", HOFFSET(dset3_t, a), array_dt);
+  H5Tclose(array_dt);
+
+  ndims = 2; dim[0] = 5; dim[1] = 6;
+  array_dt=H5Tarray_create(H5T_IEEE_F32BE,ndims,dim,perm);
+  H5Tinsert(type, "float_array", HOFFSET(dset3_t, b), array_dt);
+  H5Tclose(array_dt);
+
+  H5Tcommit(fid, "type2", type);
+  H5Tclose(type);
+
+  /* shared data type 3 */
+  type = H5Tcreate (H5T_COMPOUND, sizeof(dset4_t));
+  H5Tinsert(type, "int", HOFFSET(dset4_t, a), H5T_STD_I32BE);
+  H5Tinsert(type, "float", HOFFSET(dset4_t, b), H5T_IEEE_F32BE);
+  H5Tcommit(group, "type3", type);
+
+  dataset = H5Dcreate(group, "dset4", type, space, create_plist);
+
+  type2 = H5Tcreate (H5T_COMPOUND, sizeof(dset4_t));
+  H5Tinsert(type2, "int", HOFFSET(dset4_t, a), H5T_NATIVE_INT);
+  H5Tinsert(type2, "float", HOFFSET(dset4_t, b), H5T_NATIVE_FLOAT);
+  H5Dwrite(dataset, type2, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset4);
+
+  H5Tclose(type);
+  H5Tclose(type2);
+  H5Dclose(dataset);
+  H5Gclose(group);
+
+
+  /* unamed data type */
+  group = H5Gcreate (fid, "/group2", 0);
+
+  type = H5Tcreate (H5T_COMPOUND, sizeof(dset5_t));
+  H5Tinsert(type, "int", HOFFSET(dset5_t, a), H5T_STD_I32BE);
+  H5Tinsert(type, "float", HOFFSET(dset5_t, b), H5T_IEEE_F32BE);
+  H5Tcommit(group, "type4", type);
+  dataset = H5Dcreate(group, "dset5", type, space, create_plist);
+  type2 = H5Tcreate (H5T_COMPOUND, sizeof(dset5_t));
+  H5Tinsert(type2, "int", HOFFSET(dset5_t, a), H5T_NATIVE_INT);
+  H5Tinsert(type2, "float", HOFFSET(dset5_t, b), H5T_NATIVE_FLOAT);
+  H5Dwrite(dataset, type2, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset5);
+
+  H5Gunlink(group,"type4");
+
+  H5Tclose(type);
+  H5Tclose(type2);
+  H5Dclose(dataset);
+  H5Sclose(space);
+  H5Gclose(group);
+  H5Pclose(create_plist);
+
+  H5Fclose(fid);
+
+}
+
+
+/*
+
+/	: g1  g2  attr1  attr2
+g1	: g1.1  g1.2
+g1.1	: dset1.1.1(attr1, attr2)   dset1.1.2
+g1.2	: g1.2.1
+g1.2.1	: slink
+g2	: dset2.1  dset2.2
+
+*/
+
+static void gent_all(void) {
+hid_t fid, group, attr, dataset, space;
+hsize_t dims[2];
+int data[2][2], dset1[10][10], dset2[20];
+char buf[60];
+int i, j;
+float dset2_1[10], dset2_2[3][5];
+
+  fid = H5Fcreate(FILE7, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+  /* create groups */
+  group = H5Gcreate (fid, "/g1", 0);
+  H5Gclose(group);
+
+  group = H5Gcreate (fid, "/g2", 0);
+  H5Gclose(group);
+
+  group = H5Gcreate (fid, "/g1/g1.1", 0);
+  H5Gclose(group);
+
+  group = H5Gcreate (fid, "/g1/g1.2", 0);
+  H5Gclose(group);
+
+  group = H5Gcreate (fid, "/g1/g1.2/g1.2.1", 0);
+  H5Gclose(group);
+
+  /* root attributes */
+  group = H5Gopen (fid, "/");
+
+  dims[0] = 10;
+  space = H5Screate_simple(1, dims, NULL);
+  attr = H5Acreate (group, "attr1", H5T_STD_I8BE, space, H5P_DEFAULT);
+  sprintf(buf, "abcdefghi");
+  H5Awrite(attr, H5T_NATIVE_SCHAR, buf);
+  H5Sclose(space);
+  H5Aclose(attr);
+
+  dims[0] = 2; dims[1] = 2;
+  space = H5Screate_simple(2, dims, NULL);
+  attr = H5Acreate (group, "attr2", H5T_STD_I32BE, space, H5P_DEFAULT);
+  data[0][0] = 0; data[0][1] = 1; data[1][0] = 2; data[1][1] = 3;
+  H5Awrite(attr, H5T_NATIVE_INT, data);
+  H5Sclose(space);
+  H5Aclose(attr);
+
+  H5Gclose(group);
+
+  group = H5Gopen (fid, "/g1/g1.1");
+
+  /* dset1.1.1 */
+  dims[0] = 10; dims[1] = 10;
+  space = H5Screate_simple(2, dims, NULL);
+  dataset = H5Dcreate(group, "dset1.1.1", H5T_STD_I32BE, space, H5P_DEFAULT);
+  for (i = 0; i < 10; i++)
+       for (j = 0; j < 10; j++)
+            dset1[i][j] = j*i;
+  H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset1);
+  H5Sclose(space);
+
+  /* attributes of dset1.1.1 */
+  dims[0] = 27;
+  space = H5Screate_simple(1, dims, NULL);
+  attr = H5Acreate (dataset, "attr1", H5T_STD_I8BE, space, H5P_DEFAULT);
+  sprintf(buf, "1st attribute of dset1.1.1");
+  H5Awrite(attr, H5T_NATIVE_SCHAR, buf);
+  H5Sclose(space);
+  H5Aclose(attr);
+
+  dims[0] = 27;
+  space = H5Screate_simple(1, dims, NULL);
+  attr = H5Acreate (dataset, "attr2", H5T_STD_I8BE, space, H5P_DEFAULT);
+  sprintf(buf, "2nd attribute of dset1.1.1");
+  H5Awrite(attr, H5T_NATIVE_SCHAR, buf);
+  H5Sclose(space);
+  H5Aclose(attr);
+
+  H5Dclose(dataset);
+
+  /* dset1.1.2 */
+  dims[0] = 20;
+  space = H5Screate_simple(1, dims, NULL);
+  dataset = H5Dcreate(group, "dset1.1.2", H5T_STD_I32BE, space, H5P_DEFAULT);
+  for (i = 0; i < 20; i++)
+       dset2[i] = i;
+  H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset2);
+  H5Sclose(space);
+  H5Dclose(dataset);
+
+  H5Gclose(group);
+
+  /* soft link */
+  group = H5Gopen (fid, "/g1/g1.2/g1.2.1");
+  H5Glink (group, H5G_LINK_SOFT, "somevalue", "slink");
+  H5Gclose(group);
+
+  group = H5Gopen (fid, "/g2");
+
+  /* dset2.1 */
+  dims[0] = 10;
+  space = H5Screate_simple(1, dims, NULL);
+  dataset = H5Dcreate(group, "dset2.1", H5T_IEEE_F32BE, space, H5P_DEFAULT);
+  for (i = 0; i < 10; i++)
+       dset2_1[i] = (float)(i*0.1+1);
+  H5Dwrite(dataset, H5T_NATIVE_FLOAT, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset2_1);
+  H5Sclose(space);
+  H5Dclose(dataset);
+ 
+  /* dset2.2 */
+  dims[0] = 3; dims[1] = 5;
+  space = H5Screate_simple(2, dims, NULL);
+  dataset = H5Dcreate(group, "dset2.2", H5T_IEEE_F32BE, space, H5P_DEFAULT);
+  for (i = 0; i < 3; i++)
+       for (j = 0; j < 5; j++)
+            dset2_2[i][j] = (float)((i+1)*j*0.1);
+  H5Dwrite(dataset, H5T_NATIVE_FLOAT, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset2_2);
+  H5Sclose(space);
+  H5Dclose(dataset);
+
+  H5Gclose(group);
+
+  H5Fclose(fid);
+
+}
+
+/*
+            o
+          /___\
+      g1 o/   \o g2
+          \___/  
+
+   
+o - group objects
+
+*/
+
+static void gent_loop(void) {
+hid_t fid, group;
+
+  fid = H5Fcreate(FILE10, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+  group = H5Gcreate (fid, "/g1", 0);
+  H5Gclose(group);
+  group = H5Gcreate (fid, "/g2", 0);
+  H5Gclose(group);
+
+  H5Glink(fid, H5G_LINK_HARD, "/g2", "/g1/g1.1");
+  H5Glink(fid, H5G_LINK_HARD, "/g1", "/g2/g2.1");
+
+  H5Fclose(fid);
+}
+
+static void gent_loop2(void) {
+hid_t fid, group;
+
+  fid = H5Fcreate(FILE11, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+  /* create group object g1 and implcit path from root object */
+  group = H5Gcreate (fid, "/g1", 0);
+  H5Gclose(group);
+
+  /* create group object g2 and implcit path from root object */
+  group = H5Gcreate (fid, "/g2", 0);
+  H5Gclose(group);
+
+  /* create path from object at /g1 to object at /g2 and name it g1.1 */
+  H5Glink (fid, H5G_LINK_HARD, "/g2", "/g1/g1.1"); 
+
+  /* create path from object at /g2 to object at /g1 and name it g2.1 */
+  H5Glink (fid, H5G_LINK_SOFT, "/g1", "/g2/g2.1");
+
+  H5Fclose(fid);
+
+}
+
+/*
+                  /
+     |       |       |   \    \    \
+     g1     g2      g3   g4   g5    g6
+    / \      |       |    \     \    \
+ g1.1 g1.2 slink2  link3 dset2 slink4 dset3
+  |    |    (g1)  (dset2)      (dset3)
+ dset1 link1
+      (dset1)
+*/
+
+static void gent_many(void) {
+    hid_t fid, group, attr, dataset, space, space2, type, create_plist, type2;
+    hid_t array_dt;
+    hsize_t dims[2];
+    int data[2][2], dset2[10][10], dset3[10][10];
+    double d[10];
+
+    char buf[60];
+    int i, j;
+    int i0, i1, i2, i3;
+    hsize_t sdim, maxdim;
+
+    typedef struct {	/* compound type has members with rank > 1	*/
+      int a[2][2][2][2];	/* arrays are 2x2x2x2				*/
+      double b[2][2][2][2];
+      double c[2][2][2][2];
+    } dset1_t;
+    dset1_t dset1[6];
+
+    hsize_t dim[4];
+    int idx[4] = {0,1,2,3};  /* normal indicies */
+    const int perm[4] = {0,1,2,3};  /* the 0'th and the 3'rd indices are permuted */
+
+  fid = H5Fcreate(FILE12, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+  group = H5Gcreate (fid, "/g1", 0);
+  H5Gclose(group);
+
+  create_plist = H5Pcreate(H5P_DATASET_CREATE);
+
+  sdim = 2;
+  H5Pset_chunk(create_plist, 1, &sdim);
+
+  group = H5Gcreate (fid, "/g1/g1.1", 0);
+
+  type = H5Tcreate (H5T_COMPOUND, sizeof(dset1[0]));
+
+  dim[0] = dim[1] = dim[2] = dim[3] = 2;
+  array_dt=H5Tarray_create(H5T_STD_I32BE,4,dim,perm);
+  H5Tinsert(type, "a_array", HOFFSET(dset1_t, a), array_dt);
+  H5Tclose(array_dt);
+
+  array_dt=H5Tarray_create(H5T_IEEE_F64BE,4,dim,perm);
+  H5Tinsert(type, "b_array", HOFFSET(dset1_t, b), array_dt);
+  H5Tclose(array_dt);
+
+  array_dt=H5Tarray_create(H5T_IEEE_F64BE,4,dim,perm);
+  H5Tinsert(type, "c_array", HOFFSET(dset1_t, c), array_dt);
+  H5Tclose(array_dt);
+
+  type2 = H5Tcreate (H5T_COMPOUND, sizeof(dset1[0]));
+
+  array_dt=H5Tarray_create(H5T_NATIVE_INT,4,dim,perm);
+  H5Tinsert(type2, "a_array", HOFFSET(dset1_t, a), array_dt);
+  H5Tclose(array_dt);
+
+  array_dt=H5Tarray_create(H5T_NATIVE_DOUBLE,4,dim,perm);
+  H5Tinsert(type2, "b_array", HOFFSET(dset1_t, b), array_dt);
+  H5Tclose(array_dt);
+
+  array_dt=H5Tarray_create(H5T_NATIVE_DOUBLE,4,dim,perm);
+  H5Tinsert(type2, "c_array", HOFFSET(dset1_t, c), array_dt);
+  H5Tclose(array_dt);
+
+
+  /* dset1 */
+  sdim = 6;
+  maxdim = H5S_UNLIMITED;
+  space = H5Screate_simple(1, &sdim, &maxdim);
+  dataset = H5Dcreate(group, "dset1", type, space, create_plist);
+
+  /* add attributes to dset1 */
+  dims[0] = 10;
+  space2 = H5Screate_simple(1, dims, NULL);
+  attr = H5Acreate (dataset, "attr1", H5T_STD_I8BE, space2, H5P_DEFAULT);
+  sprintf(buf, "abcdefghi");
+  H5Awrite(attr, H5T_NATIVE_CHAR, buf);
+  H5Sclose(space2);
+  H5Aclose(attr);
+
+  dims[0] = 2; dims[1] = 2;
+  space2 = H5Screate_simple(2, dims, NULL);
+  attr = H5Acreate (dataset, "attr2", H5T_STD_I32BE, space2, H5P_DEFAULT);
+  data[0][0] = 0; data[0][1] = 1; data[1][0] = 2; data[1][1] = 3;
+  H5Awrite(attr, H5T_NATIVE_INT, data);
+  H5Sclose(space2);
+  H5Aclose(attr);
+
+  dims[0] = 10;
+  space2 = H5Screate_simple(1, dims, NULL);
+  attr = H5Acreate (dataset, "attr3", H5T_IEEE_F64BE, space2, H5P_DEFAULT);
+  for (i = 0; i < 10; i++) d[i] = 0.1 * i;
+  H5Awrite(attr, H5T_NATIVE_DOUBLE, d);
+  H5Sclose(space2);
+  H5Aclose(attr);
+
+  for (j=0; j<(int)sdim; j++) {
+	for (i3 = 0; i3 < 2; i3++) {
+		idx[perm[3]] = i3;
+	for (i2 = 0; i2 < 2; i2++) {
+		idx[perm[2]] = i2;
+	for (i1 = 0; i1 < 2; i1++) {
+		idx[perm[1]] = i1;
+	for (i0 = 0; i0 < 2; i0++) {
+		idx[perm[0]] = i0;
+		
+		dset1[j].a[idx[3]][idx[2]][idx[1]][idx[0]] = i0+j;
+		dset1[j].b[idx[3]][idx[2]][idx[1]][idx[0]] = (double)(i0+j);
+#ifdef WIN32
+		dset1[j].c[idx[3]][idx[2]][idx[1]][idx[0]] = (double)(i0+j+(signed __int64)sdim);
+#else
+		dset1[j].c[idx[3]][idx[2]][idx[1]][idx[0]] = (double)(i0+j+sdim);
+#endif
+	}
+	}
+	}
+	}
+  }
+
+  H5Dwrite(dataset, type2, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset1);
+
+  H5Dclose(dataset);
+  H5Sclose(space);
+
+  H5Tclose(type);
+  H5Tclose(type2);
+  H5Gclose(group);
+
+  group = H5Gcreate (fid, "/g1/g1.2", 0);
+  H5Glink (group, H5G_LINK_HARD, "/g1/g1.1/dset1", "link1");
+  H5Gclose(group);
+
+  group = H5Gcreate (fid, "/g2", 0);
+  H5Glink (group, H5G_LINK_SOFT, "/g1", "slink2");
+  H5Gclose(group);
+
+  group = H5Gcreate (fid, "/g3", 0);
+  H5Gclose(group);
+
+  group = H5Gcreate (fid, "/g4", 0);
+
+  /* dset2 */
+  dims[0] = 10; dims[1] = 10;
+  space = H5Screate_simple(2, dims, NULL);
+
+  dataset = H5Dcreate(group, "dset2", H5T_STD_I32BE, space, H5P_DEFAULT);
+  for (i = 0; i < 10; i++)
+       for (j = 0; j < 10; j++)
+            dset2[i][j] = j;
+  H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset2);
+
+  H5Dclose(dataset);
+
+  H5Sclose(space);
+  H5Gclose(group);
+
+  group = H5Gopen(fid, "/g3");
+  H5Glink (group, H5G_LINK_HARD, "/g4/dset2", "link3");
+  H5Gclose(group);
+
+  group = H5Gcreate (fid, "/g5", 0);
+  H5Gclose(group);
+
+  group = H5Gcreate (fid, "/g6", 0);
+  /* dset3 */
+  dims[0] = 10; dims[1] = 10;
+  space = H5Screate_simple(2, dims, NULL);
+
+  dataset = H5Dcreate(group, "dset3", H5T_STD_I32BE, space, H5P_DEFAULT);
+  for (i = 0; i < 10; i++)
+       for (j = 0; j < 10; j++)
+            dset3[i][j] = i;
+  H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset3);
+
+  H5Dclose(dataset);
+
+  H5Sclose(space);
+  H5Gclose(group);
+
+  group = H5Gopen(fid, "/g5");
+  H5Glink (group, H5G_LINK_SOFT, "/g6/dset3", "slink4");
+  H5Gclose(group);
+  H5Pclose(create_plist);
+
+  H5Fclose(fid);
+
+}
+static hid_t mkstr(int size, H5T_str_t pad) {
+hid_t type;
+
+  if ((type=H5Tcopy(H5T_C_S1))<0) return -1;
+  if (H5Tset_size(type, (size_t)size)<0) return -1;
+  if (H5Tset_strpad(type, pad)<0) return -1;
+
+  return type;
+}
+
+static void gent_str(void) {
+    hid_t fid, dataset, space, f_type, m_type, str_type, f_type2;
+    hid_t array_dt;
+
+    hsize_t dims1[] = { 3, 4};
+    char string1[12][2] = {"s1","s2","s3","s4","s5","s6","s7","s8","s9",
+                           "s0","s1","s2"};
+
+    hsize_t dims2[]={20};
+    char string2[20][9] = {"ab cd ef1", "ab cd ef2", "ab cd ef3", "ab cd ef4",
+                        "ab cd ef5", "ab cd ef6", "ab cd ef7", "ab cd ef8", 
+                        "ab cd ef9", "ab cd ef0", "ab cd ef1", "ab cd ef2", 
+                        "ab cd ef3", "ab cd ef4", "ab cd ef5", "ab cd ef6", 
+                        "ab cd ef7", "ab cd ef8", "ab cd ef9", "ab cd ef0"};
+
+    hsize_t dims3[] = { 27};
+    char string3[27][5] = {"abcd0", "abcd1", "abcd2", "abcd3", 
+                       "abcd4", "abcd5", "abcd6", "abcd7", 
+                       "abcd8", "abcd9", "abcd0", "abcd1", 
+                       "abcd2", "abcd3", "abcd4", "abcd5", 
+                       "abcd6", "abcd7", "abcd8", "abcd9", 
+                       "abcd0", "abcd1", "abcd2", "abcd3", 
+                       "abcd4", "abcd5", "abcd6"};
+
+    int i, j, k, l;
+
+    hsize_t dims4[] = { 3 };
+    char string4[3][20] = { "s1234567890123456789", "s1234567890123456789",
+                            "s1234567890123456789"};
+
+    hsize_t dims5[] = { 3, 6};
+    typedef struct {
+      int a[8][10];
+      char s[12][32];
+    } compound_t;
+    compound_t comp1[3][6];
+    hsize_t mdims[2];
+
+  fid = H5Fcreate(FILE13, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+  /* string 1 : nullterm string */
+  space = H5Screate_simple(2, dims1, NULL);
+  f_type = mkstr(5, H5T_STR_NULLTERM);
+  m_type = mkstr(2, H5T_STR_NULLTERM);
+  dataset = H5Dcreate(fid, "/string1", f_type, space, H5P_DEFAULT);
+  H5Dwrite(dataset, m_type, H5S_ALL, H5S_ALL, H5P_DEFAULT, string1);
+  H5Tclose(m_type);
+  H5Tclose(f_type);
+  H5Sclose(space);
+  H5Dclose(dataset);
+
+  /* string 2 : space pad string */
+  space = H5Screate_simple(1, dims2, NULL);
+  f_type = mkstr(11, H5T_STR_SPACEPAD);
+  m_type = mkstr(9, H5T_STR_NULLTERM);
+  dataset = H5Dcreate(fid, "/string2", f_type, space, H5P_DEFAULT);
+  H5Dwrite(dataset, m_type, H5S_ALL, H5S_ALL, H5P_DEFAULT, string2);
+  H5Tclose(m_type);
+  H5Tclose(f_type);
+  H5Sclose(space);
+  H5Dclose(dataset);
+
+  /* string 3 : null pad string */
+  space = H5Screate_simple(1, dims3, NULL);
+  f_type = mkstr(8, H5T_STR_NULLPAD);
+  m_type = mkstr(5, H5T_STR_NULLTERM);
+  dataset = H5Dcreate(fid, "/string3", f_type, space, H5P_DEFAULT);
+  H5Dwrite(dataset, m_type, H5S_ALL, H5S_ALL, H5P_DEFAULT, string3);
+  H5Tclose(m_type);
+  H5Tclose(f_type);
+  H5Sclose(space);
+  H5Dclose(dataset);
+
+  /* string 4 : space pad long string */
+  space = H5Screate_simple(1, dims4, NULL);
+  f_type = mkstr(168, H5T_STR_SPACEPAD);
+  m_type = mkstr(20, H5T_STR_NULLTERM);
+  dataset = H5Dcreate(fid, "/string4", f_type, space, H5P_DEFAULT);
+  H5Dwrite(dataset, m_type, H5S_ALL, H5S_ALL, H5P_DEFAULT, string4);
+  H5Tclose(m_type);
+  H5Tclose(f_type);
+  H5Sclose(space);
+  H5Dclose(dataset);
+
+  /* compound data */
+  space = H5Screate_simple(2, dims5, NULL);
+  f_type = H5Tcreate (H5T_COMPOUND, sizeof(compound_t));
+  f_type2 = H5Tcreate (H5T_COMPOUND, sizeof(compound_t));
+
+  mdims[0] = 8; mdims[1] = 10;
+
+  array_dt=H5Tarray_create(H5T_STD_I32BE,2,mdims,NULL);
+  H5Tinsert(f_type, "int_array", HOFFSET(compound_t, a), array_dt);
+  H5Tclose(array_dt);
+
+  array_dt=H5Tarray_create(H5T_NATIVE_INT,2,mdims,NULL);
+  H5Tinsert(f_type2, "int_array", HOFFSET(compound_t, a), array_dt);
+  H5Tclose(array_dt);
+
+  str_type = mkstr(32, H5T_STR_SPACEPAD);
+  mdims[0] = 3; mdims[1] = 4;
+
+  array_dt=H5Tarray_create(str_type,2,mdims,NULL);
+  H5Tinsert(f_type, "string", HOFFSET(compound_t, s), array_dt);
+  H5Tclose(array_dt);
+
+  array_dt=H5Tarray_create(str_type,2,mdims,NULL);
+  H5Tinsert(f_type2, "string", HOFFSET(compound_t, s), array_dt);
+  H5Tclose(array_dt);
+
+  for (i = 0; i < 3; i++)
+      for (j = 0; j < 6; j++) {
+           for (k = 0 ; k < 8; k++)
+                for (l = 0; l < 10; l++)
+                   comp1[i][j].a[k][l] = (l+j+k) * (l+j+k);
+           for (k = 0 ; k < 12; k++)
+               sprintf(comp1[i][j].s[k], "abcdefgh12345678abcdefgh12345678");
+      }
+           
+  dataset = H5Dcreate(fid, "/comp1", f_type, space, H5P_DEFAULT);
+  H5Dwrite(dataset, f_type2, H5S_ALL, H5S_ALL, H5P_DEFAULT, comp1);
+
+  H5Tclose(str_type);
+  H5Tclose(f_type);
+  H5Tclose(f_type2);
+  H5Sclose(space);
+  H5Dclose(dataset);
+
+  H5Fclose(fid);
+}
+
+/*
+                      /
+       /     /     |    \    \     \
+     g1     g2    g3    g4    g5    g6
+     |       |     |     |     \     \ 
+  string1       string3       string5 
+         string2       string4       string6
+*/
+
+static void gent_str2(void)
+{
+hid_t fid, group, attr, dataset, space, space2, mem_space, hyper_space;
+hid_t fxdlenstr, fxdlenstr2, memtype;
+hsize_t dims[1], size[1], stride[1], count[1], block[1];
+hssize_t start[1];
+
+
+int i;
+char buf[LENSTR+10];
+char buf2[3*LENSTR2];
+hsize_t sdim;
+
+  fid = H5Fcreate(FILE14, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+  fxdlenstr = H5Tcopy(H5T_C_S1);
+  H5Tset_size(fxdlenstr, LENSTR);
+  H5Tset_cset(fxdlenstr, H5T_CSET_ASCII);
+  H5Tset_strpad(fxdlenstr, H5T_STR_NULLTERM);
+
+  memtype = H5Tcopy(H5T_C_S1);
+  H5Tset_size(memtype, LENSTR);
+  H5Tset_cset(memtype, H5T_CSET_ASCII);
+  H5Tset_strpad(memtype, H5T_STR_NULLTERM);
+
+  sdim = 10;
+  size[0] = sdim;
+  space = H5Screate_simple(1, size, NULL);
+  size[0] = 1;
+  mem_space = H5Screate_simple(1,size,NULL);
+  hyper_space = H5Scopy(space);
+
+  /* dset1 */
+
+  group = H5Gcreate (fid, "/g1", 0);
+  dataset = H5Dcreate(group, "dset1", fxdlenstr, space, H5P_DEFAULT);
+
+  /* add attributes to dset1 */
+
+  fxdlenstr2 = H5Tcopy(H5T_C_S1);
+  H5Tset_size(fxdlenstr2, LENSTR2);
+  H5Tset_cset(fxdlenstr2, H5T_CSET_ASCII);
+  H5Tset_strpad(fxdlenstr2, H5T_STR_NULLTERM);
+
+  dims[0] = 3;
+  space2 = H5Screate_simple(1, dims, NULL);
+  attr = H5Acreate (dataset, "attr1", fxdlenstr2, space2, H5P_DEFAULT);
+  sprintf(&(buf2[0*LENSTR2]), "0123456789");
+  sprintf(&(buf2[1*LENSTR2]), "abcdefghij");
+  sprintf(&(buf2[2*LENSTR2]), "ABCDEFGHIJ");
+  H5Awrite(attr, fxdlenstr2, buf2);
+  H5Sclose(space2);
+  H5Tclose(fxdlenstr2);
+  H5Aclose(attr);
+
+  stride[0]=1;
+  count[0]=1;
+  block[0]=1;
+
+  for (i = 0; (hsize_t)i < sdim; i++) {
+	start[0] = i;
+	sprintf(buf,"This is row %1d of type H5T_STR_NULLTERM of",i);
+  	H5Tset_size(memtype, HDstrlen(buf)+1);
+	H5Sselect_hyperslab(hyper_space, H5S_SELECT_SET, start, stride, count, block);
+  	H5Dwrite(dataset, memtype, mem_space, hyper_space, H5P_DEFAULT, buf);
+  }
+  H5Dclose(dataset);
+  H5Gclose(group);
+
+  group = H5Gcreate (fid, "/g2", 0);
+  dataset = H5Dcreate(group, "dset2", fxdlenstr, space, H5P_DEFAULT);
+
+  for (i = 0; (hsize_t)i < sdim; i++) {
+	start[0] = i;
+	sprintf(buf,"This is row %1d of type H5T_STR_NULLTERM of string array",i);
+  	H5Tset_size(memtype, HDstrlen(buf)+1);
+	H5Sselect_hyperslab(hyper_space, H5S_SELECT_SET, start, stride, count, block);
+  	H5Dwrite(dataset, memtype, mem_space, hyper_space, H5P_DEFAULT, buf);
+  }
+  H5Dclose(dataset);
+  H5Gclose(group);
+
+
+  H5Tclose(fxdlenstr);
+  fxdlenstr = H5Tcopy(H5T_C_S1);
+  H5Tset_size(fxdlenstr, LENSTR);
+  H5Tset_cset(fxdlenstr, H5T_CSET_ASCII);
+  H5Tset_strpad(fxdlenstr, H5T_STR_NULLPAD);
+
+  group = H5Gcreate (fid, "/g3", 0);
+  dataset = H5Dcreate(group, "dset3", fxdlenstr, space, H5P_DEFAULT);
+
+  for (i = 0;(hsize_t) i < sdim; i++) {
+	start[0] = i;
+	sprintf(buf,"This is row %1d of type H5T_STR_NULLPAD of",i);
+  	H5Tset_size(memtype, HDstrlen(buf)+1);
+	H5Sselect_hyperslab(hyper_space, H5S_SELECT_SET, start, stride, count, block);
+  	H5Dwrite(dataset, memtype, mem_space, hyper_space, H5P_DEFAULT, buf);
+  }
+  H5Dclose(dataset);
+  H5Gclose(group);
+
+
+  group = H5Gcreate (fid, "/g4", 0);
+  dataset = H5Dcreate(group, "dset4", fxdlenstr, space, H5P_DEFAULT);
+
+  for (i = 0; (hsize_t)i < sdim; i++) {
+	start[0] = i;
+	sprintf(buf,"This is row %1d of type H5T_STR_NULLPAD of string array",i);
+  	H5Tset_size(memtype, HDstrlen(buf)+1);
+	H5Sselect_hyperslab(hyper_space, H5S_SELECT_SET, start, stride, count, block);
+  	H5Dwrite(dataset, memtype, mem_space, hyper_space, H5P_DEFAULT, buf);
+  }
+  H5Dclose(dataset);
+  H5Gclose(group);
+
+  H5Tclose(fxdlenstr);
+  fxdlenstr = H5Tcopy(H5T_C_S1);
+  H5Tset_size(fxdlenstr, LENSTR);
+  H5Tset_cset(fxdlenstr, H5T_CSET_ASCII);
+  H5Tset_strpad(fxdlenstr, H5T_STR_SPACEPAD);
+
+  group = H5Gcreate (fid, "/g5", 0);
+  dataset = H5Dcreate(group, "dset5", fxdlenstr, space, H5P_DEFAULT);
+
+  for (i = 0; (hsize_t)i < sdim; i++) {
+	start[0] = i;
+	sprintf(buf,"This is row %1d of type H5T_STR_SPACEPAD of",i);
+  	H5Tset_size(memtype, HDstrlen(buf)+1);
+	H5Sselect_hyperslab(hyper_space, H5S_SELECT_SET, start, stride, count, block);
+  	H5Dwrite(dataset, memtype, mem_space, hyper_space, H5P_DEFAULT, buf);
+  }
+  H5Dclose(dataset);
+  H5Gclose(group);
+
+
+  group = H5Gcreate (fid, "/g6", 0);
+  dataset = H5Dcreate(group, "dset6", fxdlenstr, space, H5P_DEFAULT);
+
+  for (i = 0; (hsize_t)i < sdim; i++) {
+	start[0] = i;
+	sprintf(buf,"This is row %1d of type H5T_STR_SPACEPAD of string array",i);
+  	H5Tset_size(memtype, HDstrlen(buf)+1);
+	H5Sselect_hyperslab(hyper_space, H5S_SELECT_SET, start, stride, count, block);
+  	H5Dwrite(dataset, memtype, mem_space, hyper_space, H5P_DEFAULT, buf);
+  }
+
+  H5Dclose(dataset);
+  H5Tclose(fxdlenstr);
+  H5Tclose(memtype);
+  H5Sclose(mem_space);
+  H5Sclose(hyper_space);
+  H5Sclose(space);
+  H5Fclose(fid);
+}
+
+static void gent_enum(void)
+{
+    /*some code is taken from enum.c in the test dir */
+    hid_t file, type, space, dset;
+    int val;
+    enumtype data[] = {RED,   GREEN, BLUE,  GREEN, WHITE,
+		       WHITE, BLACK, GREEN, BLUE,  RED,
+		       RED,   BLUE,  GREEN, BLACK, WHITE,
+		       RED,   WHITE, GREEN, GREEN, BLUE};
+    hsize_t size[1] = {NELMTS(data)};
+
+    file = H5Fcreate(FILE15,H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+
+    type = H5Tcreate(H5T_ENUM, sizeof(enumtype));
+    H5Tenum_insert(type, "RED",   (val = 0, &val));
+    H5Tenum_insert(type, "GREEN", (val = 1, &val));
+    H5Tenum_insert(type, "BLUE",  (val = 2, &val));
+    H5Tenum_insert(type, "WHITE", (val = 3, &val));
+    H5Tenum_insert(type, "BLACK", (val = 4, &val));
+    H5Tcommit(file, "enum normal", type);
+
+    space = H5Screate_simple(1,size,NULL);
+    dset = H5Dcreate(file,"table",type, space, H5P_DEFAULT);
+    H5Dwrite(dset,type,space,space,H5P_DEFAULT,data);
+
+    H5Dclose(dset);
+    H5Sclose(space);
+    H5Fclose(file);
+}
+
+static void gent_objref(void)
+{
+/*some code is taken from enum.c in the test dir */
+    hid_t		fid1;		/* HDF5 File IDs		*/
+    hid_t		dataset;	/* Dataset ID			*/
+
+    hid_t		group;      /* Group ID             */
+    hid_t		sid1;       /* Dataspace ID			*/
+    hid_t		tid1;       /* Datatype ID			*/
+    hsize_t		dims1[] = {SPACE1_DIM1};
+    hobj_ref_t      *wbuf,      /* buffer to write to disk */
+               *rbuf,       /* buffer read from disk */
+               *tbuf;       /* temp. buffer read from disk */
+    uint32_t   *tu32;      /* Temporary pointer to uint32 data */
+    int        i;          /* counting variables */
+    const char *write_comment="Foo!"; /* Comments for group */
+
+    /* Allocate write & read buffers */
+    wbuf=malloc(sizeof(hobj_ref_t)*SPACE1_DIM1);
+    rbuf=malloc(sizeof(hobj_ref_t)*SPACE1_DIM1);
+    tbuf=malloc(sizeof(hobj_ref_t)*SPACE1_DIM1);
+
+    /* Create file */
+    fid1 = H5Fcreate(FILE16, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+    /* Create dataspace for datasets */
+    sid1 = H5Screate_simple(SPACE1_RANK, dims1, NULL);
+
+    /* Create a group */
+    group=H5Gcreate(fid1,"Group1",(size_t)-1);
+
+    /* Set group's comment */
+    H5Gset_comment(group,".",write_comment);
+
+    /* Create a dataset (inside Group1) */
+    dataset=H5Dcreate(group,"Dataset1",H5T_STD_U32BE,sid1,H5P_DEFAULT);
+
+    for(tu32=(uint32_t *)((void*)wbuf),i=0; i<SPACE1_DIM1; i++)
+        *tu32++=i*3;
+
+    /* Write selection to disk */
+    H5Dwrite(dataset,H5T_NATIVE_UINT,H5S_ALL,H5S_ALL,H5P_DEFAULT,wbuf);
+
+    /* Close Dataset */
+    H5Dclose(dataset);
+
+    /* Create another dataset (inside Group1) */
+    dataset=H5Dcreate(group,"Dataset2",H5T_STD_U8BE,sid1,H5P_DEFAULT);
+
+    /* Close Dataset */
+    H5Dclose(dataset);
+
+    /* Create a datatype to refer to */
+    tid1 = H5Tcreate (H5T_COMPOUND, sizeof(s1_t));
+
+    /* Insert fields */
+    H5Tinsert (tid1, "a", HOFFSET(s1_t,a), H5T_STD_I32BE);
+
+    H5Tinsert (tid1, "b", HOFFSET(s1_t,b), H5T_IEEE_F32BE);
+
+    H5Tinsert (tid1, "c", HOFFSET(s1_t,c), H5T_IEEE_F32BE);
+
+    /* Save datatype for later */
+    H5Tcommit (group, "Datatype1", tid1);
+
+    /* Close datatype */
+    H5Tclose(tid1);
+
+    /* Close group */
+    H5Gclose(group);
+
+    /* Create a dataset */
+    dataset=H5Dcreate(fid1,"Dataset3",H5T_STD_REF_OBJ,sid1,H5P_DEFAULT);
+
+    /* Create reference to dataset */
+    H5Rcreate(&wbuf[0],fid1,"/Group1/Dataset1",H5R_OBJECT,-1);
+
+    /* Create reference to dataset */
+    H5Rcreate(&wbuf[1],fid1,"/Group1/Dataset2",H5R_OBJECT,-1);
+
+    /* Create reference to group */
+    H5Rcreate(&wbuf[2],fid1,"/Group1",H5R_OBJECT,-1);
+
+    /* Create reference to named datatype */
+    H5Rcreate(&wbuf[3],fid1,"/Group1/Datatype1",H5R_OBJECT,-1);
+
+    /* Write selection to disk */
+    H5Dwrite(dataset,H5T_STD_REF_OBJ,H5S_ALL,H5S_ALL,H5P_DEFAULT,wbuf);
+
+    /* Close disk dataspace */
+    H5Sclose(sid1);
+   
+    /* Close Dataset */
+    H5Dclose(dataset);
+
+    /* Close file */
+    H5Fclose(fid1);
+
+    /* Free memory buffers */
+    free(wbuf);
+    free(rbuf);
+    free(tbuf);
+
+}
+
+static void gent_datareg(void)
+{
+    /*some code is taken from enum.c in the test dir */
+
+    hid_t		fid1;		/* HDF5 File IDs		*/
+    hid_t		dset1,	/* Dataset ID			*/
+                dset2;      /* Dereferenced dataset ID */
+    hid_t		sid1,       /* Dataspace ID	#1		*/
+                sid2;       /* Dataspace ID	#2		*/
+    hsize_t		dims1[] = {SPACE1_DIM1},
+            	dims2[] = {SPACE2_DIM1, SPACE2_DIM2};
+    hssize_t	start[SPACE2_RANK];     /* Starting location of hyperslab */
+    hsize_t		stride[SPACE2_RANK];    /* Stride of hyperslab */
+    hsize_t		count[SPACE2_RANK];     /* Element count of hyperslab */
+    hsize_t		block[SPACE2_RANK];     /* Block size of hyperslab */
+    hssize_t	coord1[POINT1_NPOINTS][SPACE2_RANK]; /* Coordinates for point selection */
+    hdset_reg_ref_t      *wbuf,      /* buffer to write to disk */
+               *rbuf;       /* buffer read from disk */
+    uint8_t    *dwbuf,      /* Buffer for writing numeric data to disk */
+               *drbuf;      /* Buffer for reading numeric data from disk */
+    uint8_t    *tu8;        /* Temporary pointer to uint8 data */
+    int        i;          /* counting variables */
+
+    /* Allocate write & read buffers */
+    wbuf=calloc(sizeof(hdset_reg_ref_t), SPACE1_DIM1);
+    rbuf=malloc(sizeof(hdset_reg_ref_t)*SPACE1_DIM1);
+    dwbuf=malloc(sizeof(uint8_t)*SPACE2_DIM1*SPACE2_DIM2);
+    drbuf=calloc(sizeof(uint8_t),SPACE2_DIM1*SPACE2_DIM2);
+
+    /* Create file */
+    fid1 = H5Fcreate(FILE17, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+    /* Create dataspace for datasets */
+    sid2 = H5Screate_simple(SPACE2_RANK, dims2, NULL);
+
+    /* Create a dataset */
+    dset2=H5Dcreate(fid1,"Dataset2",H5T_STD_U8BE,sid2,H5P_DEFAULT);
+
+    for(tu8=dwbuf,i=0; i<SPACE2_DIM1*SPACE2_DIM2; i++)
+        *tu8++=i*3;
+
+    /* Write selection to disk */
+    H5Dwrite(dset2,H5T_NATIVE_UCHAR,H5S_ALL,H5S_ALL,H5P_DEFAULT,dwbuf);
+
+    /* Close Dataset */
+    H5Dclose(dset2);
+
+    /* Create dataspace for the reference dataset */
+    sid1 = H5Screate_simple(SPACE1_RANK, dims1, NULL);
+
+    /* Create a dataset */
+    dset1=H5Dcreate(fid1,"Dataset1",H5T_STD_REF_DSETREG,sid1,H5P_DEFAULT);
+
+    /* Create references */
+
+    /* Select 6x6 hyperslab for first reference */
+    start[0]=2; start[1]=2;
+    stride[0]=1; stride[1]=1;
+    count[0]=6; count[1]=6;
+    block[0]=1; block[1]=1;
+    H5Sselect_hyperslab(sid2,H5S_SELECT_SET,start,stride,count,block);
+
+    H5Sget_select_npoints(sid2);
+
+    /* Store first dataset region */
+    H5Rcreate(&wbuf[0],fid1,"/Dataset2",H5R_DATASET_REGION,sid2);
+
+    /* Select sequence of ten points for second reference */
+    coord1[0][0]=6; coord1[0][1]=9;
+    coord1[1][0]=2; coord1[1][1]=2;
+    coord1[2][0]=8; coord1[2][1]=4;
+    coord1[3][0]=1; coord1[3][1]=6;
+    coord1[4][0]=2; coord1[4][1]=8;
+    coord1[5][0]=3; coord1[5][1]=2;
+    coord1[6][0]=0; coord1[6][1]=4;
+    coord1[7][0]=9; coord1[7][1]=0;
+    coord1[8][0]=7; coord1[8][1]=1;
+    coord1[9][0]=3; coord1[9][1]=3;
+    H5Sselect_elements(sid2,H5S_SELECT_SET,POINT1_NPOINTS,(const hssize_t **)coord1);
+
+    H5Sget_select_npoints(sid2);
+
+    /* Store second dataset region */
+    H5Rcreate(&wbuf[1],fid1,"/Dataset2",H5R_DATASET_REGION,sid2);
+
+    /* Write selection to disk */
+    H5Dwrite(dset1,H5T_STD_REF_DSETREG,H5S_ALL,H5S_ALL,H5P_DEFAULT,wbuf);
+
+    /* Close disk dataspace */
+    H5Sclose(sid1);
+    
+    /* Close Dataset */
+    H5Dclose(dset1);
+
+    /* Close uint8 dataset dataspace */
+    H5Sclose(sid2);
+    
+    /* Close file */
+    H5Fclose(fid1);
+
+    /* Free memory buffers */
+    free(wbuf);
+    free(rbuf);
+    free(dwbuf);
+    free(drbuf);
+}
+
+/*taken from Elena's compound test file*/
+static void gent_nestcomp(void)
+{
+   /* Compound memeber of the compound datatype*/
+    typedef struct cmp_t {
+        char   a;
+        float  b[2];
+    } cmp_t;
+
+    /* First structure  and dataset*/
+    typedef struct s1_t {
+	int    a;
+	float  b;
+	double c; 
+        cmp_t  d; 
+    } s2_t;
+    hid_t      cmp_tid;    /* Handle for the compound datatype */
+    hid_t      char_id;    /* Handle for the string datatype */
+    hid_t      array_dt;
+    hsize_t     array_dims[] = {2};    /* Dataspace dimensions */
+    int        ndims = 1;    /* Number of dimensions in the array field */
+
+    s2_t       s1[10];
+    hid_t      s2_tid;     /* File datatype identifier */
+
+    int        i;
+    hid_t      file, dataset, space; /* Handles */
+    herr_t     status;
+    hsize_t    dim[] = {10};   /* Dataspace dimensions */
+
+    char datasetname[] = "ArrayOfStructures";
+
+
+    /*
+     * Initialize the data
+     */
+    for (i = 0; i< 10; i++) {
+        s1[i].a = i;
+        s1[i].b = (float)(i*i);
+        s1[i].c = 1./(i+1);
+        s1[i].d.a = 65 + i;
+        s1[i].d.b[0] = -100.;
+        s1[i].d.b[1] =  100.;
+    }
+
+    /*
+     * Create the data space.
+     */
+    space = H5Screate_simple(1, dim, NULL);
+
+    /*
+     * Create the file.
+     */
+    file = H5Fcreate(FILE18, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+    /*
+     * Create the memory data type. 
+     */
+    /* 
+     * Create a datatype for compound field first.
+     */
+    cmp_tid = H5Tcreate (H5T_COMPOUND, sizeof(cmp_t));
+
+    /* We are using C string of length one to represent "real" character */
+    char_id = H5Tcopy(H5T_C_S1);
+    H5Tset_strpad(char_id, H5T_STR_NULLTERM);       
+    H5Tinsert(cmp_tid, "char_name", HOFFSET(cmp_t, a), char_id);
+
+    array_dt=H5Tarray_create(H5T_NATIVE_FLOAT,ndims,array_dims,NULL);
+    H5Tinsert(cmp_tid, "array_name", HOFFSET(cmp_t, b), array_dt);
+    H5Tclose(array_dt);
+
+    s2_tid = H5Tcreate (H5T_COMPOUND, sizeof(s2_t));
+    H5Tinsert(s2_tid, "a_name", HOFFSET(s2_t, a), H5T_NATIVE_INT);
+    H5Tinsert(s2_tid, "c_name", HOFFSET(s2_t, c), H5T_NATIVE_DOUBLE);
+    H5Tinsert(s2_tid, "b_name", HOFFSET(s2_t, b), H5T_NATIVE_FLOAT);
+
+    /* Insert compound memeber created above */
+    H5Tinsert(s2_tid, "d_name", HOFFSET(s2_t, d), cmp_tid);
+
+    /* 
+     * Create the dataset.
+     */
+    dataset = H5Dcreate(file, datasetname, s2_tid, space, H5P_DEFAULT);
+
+    /*
+     * Wtite data to the dataset; 
+     */
+    status = H5Dwrite(dataset, s2_tid, H5S_ALL, H5S_ALL, H5P_DEFAULT, s1);
+    if (status < 0)
+	fprintf(stderr, "gent_nestcomp H5Dwrite failed\n");
+
+    /*
+     * Release resources
+     */
+    H5Tclose(s2_tid);
+    H5Tclose(cmp_tid);
+    H5Tclose(char_id);
+    H5Sclose(space);
+    H5Dclose(dataset);
+    H5Fclose(file);
+}
+
+static void gent_opaque(void)
+{
+    hid_t file, type, dataset, space;
+    char test[100][2];
+    int x;
+    hsize_t dim = 2;
+
+    for (x = 0; x < 100; x++){
+        test[x][0] = x;
+        test[x][1] = 99 - x;
+    }
+	
+    /*
+     * Create the data space.
+     */
+    space = H5Screate_simple(1, &dim, NULL);
+
+    /*
+     * Create the file.
+     */
+    file = H5Fcreate(FILE19, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+    /*
+     * Create the memory datatype. 
+     */
+    type = H5Tcreate (H5T_OPAQUE, sizeof(char)*100*2);
+    H5Tset_tag(type, "test opaque type");
+
+    /* 
+     * Create the dataset.
+     */
+    dataset = H5Dcreate(file, "opaque test", type, space, H5P_DEFAULT);
+
+    /*
+     * Write data to the dataset; 
+     */
+    H5Dwrite(dataset, type, H5S_ALL, H5S_ALL, H5P_DEFAULT, test);
+
+    H5Tclose(type);
+    H5Sclose(space);
+    H5Dclose(dataset);
+    H5Fclose(file);	
+}
+
+static void gent_bitfields(void)
+{
+    hid_t		file, grp=-1, type=-1, space=-1, dset=-1;
+    size_t		i;
+    hsize_t		nelmts;
+    unsigned char	buf[32];
+
+    file = H5Fcreate(FILE20, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+   
+    if ((grp=H5Gcreate(file, "typetests", 0))<0) goto error;
+
+    /* bitfield_1 */
+    nelmts = sizeof(buf);
+    if ((type=H5Tcopy(H5T_STD_B8LE))<0 ||
+	(space=H5Screate_simple(1, &nelmts, NULL))<0 ||
+	(dset=H5Dcreate(grp, "bitfield_1", type, space, H5P_DEFAULT))<0)
+	goto error;
+
+    for (i=0; i<sizeof buf; i++) buf[i] = (unsigned char)0xff ^ (unsigned char)i;
+    if (H5Dwrite(dset, type, H5S_ALL, H5S_ALL, H5P_DEFAULT, buf)<0)
+	goto error;
+    if (H5Sclose(space)<0) goto error;
+    if (H5Tclose(type)<0) goto error;
+    if (H5Dclose(dset)<0) goto error;
+
+    /* bitfield_2 */
+    nelmts = sizeof(buf)/2;
+    if ((type=H5Tcopy(H5T_STD_B16LE))<0 ||
+	(space=H5Screate_simple(1, &nelmts, NULL))<0 ||
+	(dset=H5Dcreate(grp, "bitfield_2", type, space, H5P_DEFAULT))<0)
+	goto error;
+    for (i=0; i<sizeof buf; i++) buf[i] = (unsigned char)0xff ^ (unsigned char)i;
+    if (H5Dwrite(dset, type, H5S_ALL, H5S_ALL, H5P_DEFAULT, buf)<0)
+	goto error;
+    if (H5Sclose(space)<0) goto error;
+    if (H5Tclose(type)<0) goto error;
+    if (H5Dclose(dset)<0) goto error;
+    if (H5Gclose(grp)<0) goto error;
+    H5Fclose(file);
+
+ error:
+    H5E_BEGIN_TRY {
+	H5Gclose(grp);
+	H5Tclose(type);
+	H5Sclose(space);
+	H5Dclose(dset);
+    } H5E_END_TRY;
+}
+
+static void gent_vldatatypes(void)
+{
+    hvl_t adata, wdata[SPACE1_DIM1];
+    hid_t file, dset, space, type;
+    hsize_t dims[] = { SPACE1_DIM1 };
+    int i;
+    herr_t ret=0;
+
+    file = H5Fcreate(FILE21, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+   
+    /* Allocate and initialize VL dataset to write */
+    for(i = 0; i < SPACE1_DIM1; i++) {
+	int j;
+
+        wdata[i].p = malloc((i + 1) * sizeof(int));
+        wdata[i].len = i + 1;
+
+        for (j = 0; j < i + 1; j++)
+            ((int *)wdata[i].p)[j] = i * 10 + j;
+    }
+
+    /* write out the integers in little-endian format */
+    space = H5Screate_simple(SPACE1_RANK, dims, NULL);
+    type = H5Tvlen_create(H5T_NATIVE_INT);
+    dset = H5Dcreate(file, "Dataset1.0", type, space, H5P_DEFAULT);
+    ret = H5Dwrite(dset, type, H5S_ALL, H5S_ALL, H5P_DEFAULT, wdata);
+    assert(ret>=0);
+    ret = H5Dvlen_reclaim(type, space, H5P_DEFAULT, wdata);
+    assert(ret>=0);
+
+    ret = H5Dclose(dset);
+    assert(ret>=0);
+    ret = H5Tclose(type);
+    assert(ret>=0);
+    ret = H5Sclose(space);
+    assert(ret>=0);
+
+    /* Allocate and initialize VL dataset to write */
+    for(i = 0; i < SPACE1_DIM1; i++) {
+	int j;
+
+        wdata[i].p = malloc((i + 1) * sizeof(float));
+        wdata[i].len = i + 1;
+
+        for (j = 0; j < i + 1; j++)
+            ((float *)wdata[i].p)[j] = (float)(i * 10 + ((float)j) / 10.0);
+    }
+
+    /* write out the floats in little-endian format */
+    space = H5Screate_simple(SPACE1_RANK, dims, NULL);
+    type = H5Tvlen_create(H5T_NATIVE_FLOAT);
+    dset = H5Dcreate(file, "Dataset2.0", type, space, H5P_DEFAULT);
+    ret = H5Dwrite(dset, type, H5S_ALL, H5S_ALL, H5P_DEFAULT, wdata);
+    assert(ret>=0);
+    ret = H5Dvlen_reclaim(type, space, H5P_DEFAULT, wdata);
+    assert(ret>=0);
+
+    ret = H5Dclose(dset);
+    assert(ret>=0);
+    ret = H5Tclose(type);
+    assert(ret>=0);
+    ret = H5Sclose(space);
+    assert(ret>=0);
+
+    /* Allocate and initialize a scalar VL dataset to write */
+    adata.p = malloc(37 * sizeof(int));
+    adata.len = 37;
+
+    for (i = 0; i < 37; i++)
+        ((int *)adata.p)[i] = i * 2;
+
+    /* write out scalar VL dataset in little-endian format */
+    space = H5Screate_simple(0, NULL, NULL);
+    type = H5Tvlen_create(H5T_NATIVE_INT);
+    dset = H5Dcreate(file, "Dataset3.0", type, space, H5P_DEFAULT);
+    ret = H5Dwrite(dset, type, H5S_ALL, H5S_ALL, H5P_DEFAULT, &adata);
+    assert(ret>=0);
+    ret = H5Dvlen_reclaim(type, space, H5P_DEFAULT, &adata);
+    assert(ret>=0);
+
+    ret = H5Dclose(dset);
+    assert(ret>=0);
+    ret = H5Tclose(type);
+    assert(ret>=0);
+    ret = H5Sclose(space);
+    assert(ret>=0);
+    ret = H5Fclose(file);
+    assert(ret>=0);
+}
+
+static void gent_vldatatypes2(void)
+{
+    hvl_t wdata[SPACE1_DIM1];   /* Information to write */
+    hvl_t *t1;              /* Temporary pointer to VL information */
+    hid_t		fid1;		/* HDF5 File IDs		*/
+    hid_t		dataset;	/* Dataset ID			*/
+    hid_t		sid1;       /* Dataspace ID			*/
+    hid_t		tid1, tid2; /* Datatype IDs         */
+    hsize_t		dims1[] = {SPACE1_DIM1};
+    unsigned       i,j,k;      /* counting variables */
+    herr_t		ret;		/* Generic return value		*/
+
+    /* Allocate and initialize VL data to write */
+    for(i=0; i<SPACE1_DIM1; i++) {
+        wdata[i].p=malloc((i+1)*sizeof(hvl_t));
+        if(wdata[i].p==NULL) {
+            printf("Cannot allocate memory for VL data! i=%u\n",i);
+            return;
+        } /* end if */
+        wdata[i].len=i+1;
+        for(t1=wdata[i].p,j=0; j<(i+1); j++, t1++) {
+            t1->p=malloc((j+1)*sizeof(unsigned int));
+            if(t1->p==NULL) {
+                printf("Cannot allocate memory for VL data! i=%u, j=%u\n",i,j);
+                return;
+            } /* end if */
+            t1->len=j+1;
+            for(k=0; k<(j+1); k++)
+                ((unsigned int *)t1->p)[k]=i*100+j*10+k;
+        } /* end for */
+    } /* end for */
+
+    /* Create file */
+    fid1 = H5Fcreate(FILE22, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+    /* Create dataspace for datasets */
+    sid1 = H5Screate_simple(SPACE1_RANK, dims1, NULL);
+
+    /* Create a VL datatype to refer to */
+    tid1 = H5Tvlen_create (H5T_NATIVE_UINT);
+
+    /* Create the base VL type */
+    tid2 = H5Tvlen_create (tid1);
+
+    /* Create a dataset */
+    dataset=H5Dcreate(fid1,"Dataset1",tid2,sid1,H5P_DEFAULT);
+
+    /* Write dataset to disk */
+    ret=H5Dwrite(dataset,tid2,H5S_ALL,H5S_ALL,H5P_DEFAULT,wdata);
+    assert(ret>=0);
+
+    /* Reclaim the write VL data */
+    ret=H5Dvlen_reclaim(tid2,sid1,H5P_DEFAULT,wdata);
+    assert(ret>=0);
+
+    /* Close Dataset */
+    ret = H5Dclose(dataset);
+    assert(ret>=0);
+    ret = H5Tclose(tid2);
+    assert(ret>=0);
+    ret = H5Tclose(tid1);
+    assert(ret>=0);
+    ret = H5Sclose(sid1);
+    assert(ret>=0);
+    ret = H5Fclose(fid1);
+    assert(ret>=0);
+
+}
+
+static void gent_vldatatypes3(void)
+{
+    typedef struct {             /* Struct that the VL sequences are composed of */
+        int i;
+        float f;
+        hvl_t v;
+    } s1;
+    s1 wdata[SPACE1_DIM1];   /* Information to write */
+    hid_t		fid1;		/* HDF5 File IDs		*/
+    hid_t		dataset;	/* Dataset ID			*/
+    hid_t		sid1;       /* Dataspace ID			*/
+    hid_t		tid1, tid2; /* Datatype IDs         */
+    hsize_t		dims1[] = {SPACE1_DIM1};
+    unsigned       i,j;        /* counting variables */
+    herr_t		ret;		/* Generic return value		*/
+
+    /* Allocate and initialize VL data to write */
+    for(i=0; i<SPACE1_DIM1; i++) {
+        wdata[i].i=i*10;
+        wdata[i].f=(float)((i*20)/3.0);
+        wdata[i].v.p=malloc((i+1)*sizeof(unsigned int));
+        wdata[i].v.len=i+1;
+        for(j=0; j<(i+1); j++)
+            ((unsigned int *)wdata[i].v.p)[j]=i*10+j;
+    } /* end for */
+
+    /* Create file */
+    fid1 = H5Fcreate(FILE23, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+    /* Create dataspace for datasets */
+    sid1 = H5Screate_simple(SPACE1_RANK, dims1, NULL);
+
+    /* Create a VL datatype to refer to */
+    tid1 = H5Tvlen_create (H5T_NATIVE_UINT);
+
+    /* Create the base compound type */
+    tid2 = H5Tcreate(H5T_COMPOUND, sizeof(s1));
+
+    /* Insert fields */
+    ret=H5Tinsert(tid2, "i", HOFFSET(s1, i), H5T_NATIVE_INT);
+    assert(ret>=0);
+    ret=H5Tinsert(tid2, "f", HOFFSET(s1, f), H5T_NATIVE_FLOAT);
+    assert(ret>=0);
+    ret=H5Tinsert(tid2, "v", HOFFSET(s1, v), tid1);
+    assert(ret>=0);
+
+    /* Create a dataset */
+    dataset=H5Dcreate(fid1,"Dataset1",tid2,sid1,H5P_DEFAULT);
+
+    /* Write dataset to disk */
+    ret=H5Dwrite(dataset,tid2,H5S_ALL,H5S_ALL,H5P_DEFAULT,wdata);
+    assert(ret>=0);
+
+    /* Reclaim the write VL data */
+    ret=H5Dvlen_reclaim(tid2,sid1,H5P_DEFAULT,wdata);
+    assert(ret>=0);
+
+    /* Close Dataset */
+    ret = H5Dclose(dataset);
+    assert(ret>=0);
+    ret = H5Tclose(tid2);
+    assert(ret>=0);
+    ret = H5Tclose(tid1);
+    assert(ret>=0);
+    ret = H5Sclose(sid1);
+    assert(ret>=0);
+    ret = H5Fclose(fid1);
+    assert(ret>=0);
+}
+
+static void gent_vldatatypes4(void)
+{
+    typedef struct {             /* Struct that the VL sequences are composed of */
+        int i;
+        float f;
+    } s1;
+    hvl_t wdata[SPACE1_DIM1];   /* Information to write */
+    hid_t		fid1;		/* HDF5 File IDs		*/
+    hid_t		dataset;	/* Dataset ID			*/
+    hid_t		sid1;       /* Dataspace ID			*/
+    hid_t		tid1, tid2; /* Datatype IDs         */
+    hsize_t		dims1[] = {SPACE1_DIM1};
+    unsigned       i,j;        /* counting variables */
+    herr_t		ret;		/* Generic return value		*/
+
+    /* Allocate and initialize VL data to write */
+    for(i=0; i<SPACE1_DIM1; i++) {
+        wdata[i].p=malloc((i+1)*sizeof(s1));
+        wdata[i].len=i+1;
+        for(j=0; j<(i+1); j++) {
+            ((s1 *)wdata[i].p)[j].i=i*10+j;
+            ((s1 *)wdata[i].p)[j].f=(float)((i*20+j)/3.0);
+          } /* end for */
+    } /* end for */
+
+    /* Create file */
+    fid1 = H5Fcreate(FILE24, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+    /* Create dataspace for datasets */
+    sid1 = H5Screate_simple(SPACE1_RANK, dims1, NULL);
+
+    /* Create the base compound type */
+    tid2 = H5Tcreate(H5T_COMPOUND, sizeof(s1));
+
+    /* Insert fields */
+    ret=H5Tinsert(tid2, "i", HOFFSET(s1, i), H5T_NATIVE_INT);
+    assert(ret>=0);
+    ret=H5Tinsert(tid2, "f", HOFFSET(s1, f), H5T_NATIVE_FLOAT);
+    assert(ret>=0);
+
+    /* Create a datatype to refer to */
+    tid1 = H5Tvlen_create (tid2);
+
+    /* Create a dataset */
+    dataset=H5Dcreate(fid1,"Dataset1",tid1,sid1,H5P_DEFAULT);
+
+    /* Write dataset to disk */
+    ret=H5Dwrite(dataset,tid1,H5S_ALL,H5S_ALL,H5P_DEFAULT,wdata);
+    assert(ret>=0);
+
+    /* Reclaim the write VL data */
+    ret=H5Dvlen_reclaim(tid1,sid1,H5P_DEFAULT,wdata);
+    assert(ret>=0);
+
+    /* Close Dataset */
+    ret = H5Dclose(dataset);
+    assert(ret>=0);
+    ret = H5Tclose(tid1);
+    assert(ret>=0);
+    ret = H5Tclose(tid2);
+    assert(ret>=0);
+    ret = H5Sclose(sid1);
+    assert(ret>=0);
+    ret = H5Fclose(fid1);
+    assert(ret>=0);
+}
+
+static void gent_array1(void)
+{
+    int wdata[SPACE1_DIM1][ARRAY1_DIM1];   /* Information to write */
+    hid_t		fid1;		/* HDF5 File IDs		*/
+    hid_t		dataset;	/* Dataset ID			*/
+    hid_t		sid1;       /* Dataspace ID			*/
+    hid_t		tid1;       /* Datatype ID			*/
+    hsize_t		sdims1[] = {SPACE1_DIM1};
+    hsize_t		tdims1[] = {ARRAY1_DIM1};
+    int        i,j;        /* counting variables */
+    herr_t		ret;		/* Generic return value		*/
+
+    /* Allocate and initialize array data to write */
+    for(i=0; i<SPACE1_DIM1; i++)
+        for(j=0; j<ARRAY1_DIM1; j++)
+            wdata[i][j]=i*10+j;
+
+    /* Create file */
+    fid1 = H5Fcreate(FILE25, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+    /* Create dataspace for datasets */
+    sid1 = H5Screate_simple(SPACE1_RANK, sdims1, NULL);
+
+    /* Create a datatype to refer to */
+    tid1 = H5Tarray_create (H5T_NATIVE_INT,ARRAY1_RANK,tdims1,NULL);
+
+    /* Create a dataset */
+    dataset=H5Dcreate(fid1,"Dataset1",tid1,sid1,H5P_DEFAULT);
+
+    /* Write dataset to disk */
+    ret=H5Dwrite(dataset,tid1,H5S_ALL,H5S_ALL,H5P_DEFAULT,wdata);
+    assert(ret>=0);
+
+    /* Close Dataset */
+    ret = H5Dclose(dataset);
+    assert(ret>=0);
+    ret = H5Tclose(tid1);
+    assert(ret>=0);
+    ret = H5Sclose(sid1);
+    assert(ret>=0);
+    ret = H5Fclose(fid1);
+    assert(ret>=0);
+}
+
+static void gent_array2(void)
+{
+    int wdata[SPACE1_DIM1][ARRAY2_DIM1][ARRAY2_DIM2][ARRAY2_DIM3];   /* Information to write */
+    hid_t		fid;        /* HDF5 File IDs		*/
+    hid_t		dataset;	/* Dataset ID			*/
+    hid_t		sid;        /* Dataspace ID			*/
+    hid_t		tid;        /* Datatype ID			*/
+    hsize_t		sdims1[] = {SPACE1_DIM1};
+    hsize_t		tdims2[] = {ARRAY2_DIM1,ARRAY2_DIM2,ARRAY2_DIM3};
+    int        i,j,k,l;    /* counting variables */
+    herr_t		ret;		/* Generic return value		*/
+
+    /* Allocate and initialize array data to write */
+    for(i=0; i<SPACE1_DIM1; i++)
+        for(j=0; j<ARRAY2_DIM1; j++)
+            for(k=0; k<ARRAY2_DIM2; k++)
+                for(l=0; l<ARRAY2_DIM3; l++)
+                    wdata[i][j][k][l]=i*1000+j*100+k*10+l;
+
+    /* Create file */
+    fid = H5Fcreate(FILE26, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+    /* Create dataspace for datasets */
+    sid = H5Screate_simple(SPACE1_RANK, sdims1, NULL);
+
+    /* Create a datatype to refer to */
+    tid = H5Tarray_create (H5T_NATIVE_INT,ARRAY2_RANK,tdims2,NULL);
+
+    /* Create a dataset */
+    dataset=H5Dcreate(fid,"Dataset1",tid,sid,H5P_DEFAULT);
+
+    /* Write dataset to disk */
+    ret=H5Dwrite(dataset,tid,H5S_ALL,H5S_ALL,H5P_DEFAULT,wdata);
+    assert(ret>=0);
+
+    /* Close Dataset */
+    ret = H5Dclose(dataset);
+    assert(ret>=0);
+    ret = H5Tclose(tid);
+    assert(ret>=0);
+    ret = H5Sclose(sid);
+    assert(ret>=0);
+    ret = H5Fclose(fid);
+    assert(ret>=0);
+}
+
+static void gent_array3(void)
+{
+    int wdata[SPACE1_DIM1][ARRAY1_DIM1][ARRAY3_DIM1][ARRAY3_DIM2];   /* Information to write */
+    hid_t		fid;        /* HDF5 File IDs		*/
+    hid_t		dataset;	/* Dataset ID			*/
+    hid_t		sid;        /* Dataspace ID			*/
+    hid_t		tid1;       /* 1-D array Datatype ID */
+    hid_t		tid2;       /* 2-D array Datatype ID */
+    hsize_t		sdims1[] = {SPACE1_DIM1};
+    hsize_t		tdims1[] = {ARRAY1_DIM1};
+    hsize_t		tdims2[] = {ARRAY3_DIM1,ARRAY3_DIM2};
+    int        i,j,k,l;    /* counting variables */
+    herr_t		ret;		/* Generic return value		*/
+
+    /* Allocate and initialize array data to write */
+    for(i=0; i<SPACE1_DIM1; i++)
+        for(j=0; j<ARRAY1_DIM1; j++)
+            for(k=0; k<ARRAY3_DIM1; k++)
+                for(l=0; l<ARRAY3_DIM2; l++)
+                    wdata[i][j][k][l]=i*1000+j*100+k*10+l;
+
+    /* Create file */
+    fid = H5Fcreate(FILE27, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+    /* Create dataspace for datasets */
+    sid = H5Screate_simple(SPACE1_RANK, sdims1, NULL);
+
+    /* Create a 2-D datatype to refer to */
+    tid2 = H5Tarray_create (H5T_NATIVE_INT,ARRAY3_RANK,tdims2,NULL);
+
+    /* Create a 1-D datatype to refer to */
+    tid1 = H5Tarray_create (tid2,ARRAY1_RANK,tdims1,NULL);
+
+    /* Create a dataset */
+    dataset=H5Dcreate(fid,"Dataset1",tid1,sid,H5P_DEFAULT);
+
+    /* Write dataset to disk */
+    ret=H5Dwrite(dataset,tid1,H5S_ALL,H5S_ALL,H5P_DEFAULT,wdata);
+    assert(ret>=0);
+
+    /* Close Dataset */
+    ret = H5Dclose(dataset);
+    assert(ret>=0);
+    ret = H5Tclose(tid1);
+    assert(ret>=0);
+    ret = H5Tclose(tid2);
+    assert(ret>=0);
+    ret = H5Sclose(sid);
+    assert(ret>=0);
+    ret = H5Fclose(fid);
+    assert(ret>=0);
+}
+
+static void gent_array4(void)
+{
+    typedef struct {        /* Typedef for compound datatype */
+        int i;
+        float f;
+    } s2_t;
+    s2_t wdata[SPACE1_DIM1][ARRAY1_DIM1];   /* Information to write */
+    hid_t		fid1;		/* HDF5 File IDs		*/
+    hid_t		dataset;	/* Dataset ID			*/
+    hid_t		sid1;       /* Dataspace ID			*/
+    hid_t		tid1;       /* Array Datatype ID			*/
+    hid_t		tid2;       /* Compound Datatype ID			*/
+    hsize_t		sdims1[] = {SPACE1_DIM1};
+    hsize_t		tdims1[] = {ARRAY1_DIM1};
+    int        i,j;        /* counting variables */
+    herr_t		ret;		/* Generic return value		*/
+
+    /* Initialize array data to write */
+    for(i=0; i<SPACE1_DIM1; i++)
+        for(j=0; j<ARRAY1_DIM1; j++) {
+            wdata[i][j].i=i*10+j;
+            wdata[i][j].f=(float)(i*2.5+j);
+        } /* end for */
+
+    /* Create file */
+    fid1 = H5Fcreate(FILE28, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+    /* Create dataspace for datasets */
+    sid1 = H5Screate_simple(SPACE1_RANK, sdims1, NULL);
+
+    /* Create a compound datatype to refer to */
+    tid2 = H5Tcreate(H5T_COMPOUND, sizeof(s2_t));
+
+    /* Insert integer field */
+    ret = H5Tinsert (tid2, "i", HOFFSET(s2_t,i), H5T_NATIVE_INT);
+    assert(ret>=0);
+
+    /* Insert float field */
+    ret = H5Tinsert (tid2, "f", HOFFSET(s2_t,f), H5T_NATIVE_FLOAT);
+    assert(ret>=0);
+
+    /* Create an array datatype to refer to */
+    tid1 = H5Tarray_create (tid2,ARRAY1_RANK,tdims1,NULL);
+
+    /* Close compound datatype */
+    ret=H5Tclose(tid2);
+    assert(ret>=0);
+
+    /* Create a dataset */
+    dataset=H5Dcreate(fid1,"Dataset1",tid1,sid1,H5P_DEFAULT);
+
+    /* Write dataset to disk */
+    ret=H5Dwrite(dataset,tid1,H5S_ALL,H5S_ALL,H5P_DEFAULT,wdata);
+    assert(ret>=0);
+
+    /* Close Dataset */
+    ret = H5Dclose(dataset);
+    assert(ret>=0);
+    ret = H5Tclose(tid1);
+    assert(ret>=0);
+    ret = H5Sclose(sid1);
+    assert(ret>=0);
+    ret = H5Fclose(fid1);
+    assert(ret>=0);
+}
+
+static void gent_array5(void)
+{
+    typedef struct {        /* Typedef for compound datatype */
+        int i;
+        float f[ARRAY1_DIM1];
+    } s2_t;
+    s2_t wdata[SPACE1_DIM1][ARRAY1_DIM1];   /* Information to write */
+    hid_t		fid1;		/* HDF5 File IDs		*/
+    hid_t		dataset;	/* Dataset ID			*/
+    hid_t		sid1;       /* Dataspace ID			*/
+    hid_t		tid1;       /* Array Datatype ID	*/
+    hid_t		tid2;       /* Compound Datatype ID	*/
+    hid_t		tid3;       /* Nested Array Datatype ID	*/
+    hsize_t		sdims1[] = {SPACE1_DIM1};
+    hsize_t		tdims1[] = {ARRAY1_DIM1};
+    int        i,j,k;      /* counting variables */
+    herr_t		ret;		/* Generic return value		*/
+
+    /* Initialize array data to write */
+    for(i=0; i<SPACE1_DIM1; i++)
+        for(j=0; j<ARRAY1_DIM1; j++) {
+            wdata[i][j].i=i*10+j;
+            for(k=0; k<ARRAY1_DIM1; k++)
+                wdata[i][j].f[k]=(float)(i*10+j*2.5+k);
+        } /* end for */
+
+    /* Create file */
+    fid1 = H5Fcreate(FILE29, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+    /* Create dataspace for datasets */
+    sid1 = H5Screate_simple(SPACE1_RANK, sdims1, NULL);
+
+    /* Create a compound datatype to refer to */
+    tid2 = H5Tcreate(H5T_COMPOUND, sizeof(s2_t));
+
+    /* Insert integer field */
+    ret = H5Tinsert (tid2, "i", HOFFSET(s2_t,i), H5T_NATIVE_INT);
+    assert(ret>=0);
+
+    /* Create an array of floats datatype */
+    tid3 = H5Tarray_create (H5T_NATIVE_FLOAT,ARRAY1_RANK,tdims1,NULL);
+
+    /* Insert float array field */
+    ret = H5Tinsert (tid2, "f", HOFFSET(s2_t,f), tid3);
+    assert(ret>=0);
+
+    /* Close array of floats field datatype */
+    ret=H5Tclose(tid3);
+    assert(ret>=0);
+
+    /* Create an array datatype to refer to */
+    tid1 = H5Tarray_create (tid2,ARRAY1_RANK,tdims1,NULL);
+
+    /* Close compound datatype */
+    ret=H5Tclose(tid2);
+    assert(ret>=0);
+
+    /* Create a dataset */
+    dataset=H5Dcreate(fid1,"Dataset1",tid1,sid1,H5P_DEFAULT);
+
+    /* Write dataset to disk */
+    ret=H5Dwrite(dataset,tid1,H5S_ALL,H5S_ALL,H5P_DEFAULT,wdata);
+    assert(ret>=0);
+
+    /* Close Dataset */
+    ret = H5Dclose(dataset);
+    assert(ret>=0);
+    ret = H5Tclose(tid1);
+    assert(ret>=0);
+    ret = H5Sclose(sid1);
+    assert(ret>=0);
+    ret = H5Fclose(fid1);
+    assert(ret>=0);
+}
+
+static void gent_array6(void)
+{
+    hvl_t wdata[SPACE1_DIM1][ARRAY1_DIM1];   /* Information to write */
+    hid_t		fid1;		/* HDF5 File IDs		*/
+    hid_t		dataset;	/* Dataset ID			*/
+    hid_t		sid1;       /* Dataspace ID			*/
+    hid_t		tid1;       /* Array Datatype ID			*/
+    hid_t		tid2;       /* VL Datatype ID       */
+    hsize_t		sdims1[] = {SPACE1_DIM1};
+    hsize_t		tdims1[] = {ARRAY1_DIM1};
+    int        i,j,k;      /* counting variables */
+    herr_t		ret;		/* Generic return value		*/
+
+    /* Initialize array data to write */
+    for(i=0; i<SPACE1_DIM1; i++)
+        for(j=0; j<ARRAY1_DIM1; j++) {
+            wdata[i][j].p=malloc((i+j+1)*sizeof(unsigned int));
+            wdata[i][j].len=i+j+1;
+            for(k=0; k<(i+j+1); k++)
+                ((unsigned int *)wdata[i][j].p)[k]=i*100+j*10+k;
+        } /* end for */
+
+    /* Create file */
+    fid1 = H5Fcreate(FILE30, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+    /* Create dataspace for datasets */
+    sid1 = H5Screate_simple(SPACE1_RANK, sdims1, NULL);
+
+    /* Create a compound datatype to refer to */
+    tid2 = H5Tvlen_create(H5T_NATIVE_UINT);
+
+    /* Create an array datatype to refer to */
+    tid1 = H5Tarray_create (tid2,ARRAY1_RANK,tdims1,NULL);
+
+    /* Close VL datatype */
+    ret=H5Tclose(tid2);
+    assert(ret>=0);
+
+    /* Create a dataset */
+    dataset=H5Dcreate(fid1,"Dataset1",tid1,sid1,H5P_DEFAULT);
+
+    /* Write dataset to disk */
+    ret=H5Dwrite(dataset,tid1,H5S_ALL,H5S_ALL,H5P_DEFAULT,wdata);
+    assert(ret>=0);
+
+    /* Reclaim the write VL data */
+    ret=H5Dvlen_reclaim(tid1,sid1,H5P_DEFAULT,wdata);
+    assert(ret>=0);
+
+    /* Close Dataset */
+    ret = H5Dclose(dataset);
+    assert(ret>=0);
+    ret = H5Tclose(tid1);
+    assert(ret>=0);
+    ret = H5Sclose(sid1);
+    assert(ret>=0);
+    ret = H5Fclose(fid1);
+    assert(ret>=0);
+}
+
+static void gent_array7(void)
+{
+    hvl_t wdata[SPACE1_DIM1][ARRAY1_DIM1];   /* Information to write */
+    hid_t		fid1;		/* HDF5 File IDs		*/
+    hid_t		dataset;	/* Dataset ID			*/
+    hid_t		sid1;       /* Dataspace ID			*/
+    hid_t		tid1;       /* Array Datatype ID			*/
+    hid_t		tid2;       /* VL Datatype ID       */
+    hid_t		tid3;       /* Nested Array Datatype ID   */
+    hsize_t		sdims1[] = {SPACE1_DIM1};
+    hsize_t		tdims1[] = {ARRAY1_DIM1};
+    int        i,j,k,l;    /* Index variables */
+    herr_t		ret;		/* Generic return value		*/
+
+    /* Initialize array data to write */
+    for(i=0; i<SPACE1_DIM1; i++)
+        for(j=0; j<ARRAY1_DIM1; j++) {
+            wdata[i][j].p=malloc((i+j+1)*(sizeof(unsigned int)*ARRAY1_DIM1));
+            wdata[i][j].len=i+j+1;
+            for(k=0; k<(i+j+1); k++)
+                for(l=0; l<ARRAY1_DIM1; l++)
+                    ((unsigned int *)wdata[i][j].p)[k*ARRAY1_DIM1+l]=i*1000+j*100+k*10+l;
+        } /* end for */
+
+    /* Create file */
+    fid1 = H5Fcreate(FILE31, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+    /* Create dataspace for datasets */
+    sid1 = H5Screate_simple(SPACE1_RANK, sdims1, NULL);
+
+    /* Create the nested array datatype to refer to */
+    tid3 = H5Tarray_create(H5T_NATIVE_UINT,ARRAY1_RANK,tdims1,NULL);
+
+    /* Create a VL datatype of 1-D arrays to refer to */
+    tid2 = H5Tvlen_create(tid3);
+
+    /* Close nested array datatype */
+    ret=H5Tclose(tid3);
+    assert(ret>=0);
+
+    /* Create an array datatype to refer to */
+    tid1 = H5Tarray_create (tid2,ARRAY1_RANK,tdims1,NULL);
+
+    /* Close VL datatype */
+    ret=H5Tclose(tid2);
+    assert(ret>=0);
+
+    /* Create a dataset */
+    dataset=H5Dcreate(fid1,"Dataset1",tid1,sid1,H5P_DEFAULT);
+
+    /* Write dataset to disk */
+    ret=H5Dwrite(dataset,tid1,H5S_ALL,H5S_ALL,H5P_DEFAULT,wdata);
+    assert(ret>=0);
+
+    /* Reclaim the write VL data */
+    ret=H5Dvlen_reclaim(tid1,sid1,H5P_DEFAULT,wdata);
+    assert(ret>=0);
+
+    /* Close Dataset */
+    ret = H5Dclose(dataset);
+    assert(ret>=0);
+    ret = H5Tclose(tid1);
+    assert(ret>=0);
+    ret = H5Sclose(sid1);
+    assert(ret>=0);
+    ret = H5Fclose(fid1);
+    assert(ret>=0);
+}
+
+static void gent_empty(void)
+{
+    typedef struct {
+        int a;
+        float b;
+        char c;
+    } empty_struct;
+    hid_t file, dset, space, type;
+    hsize_t dims[] = { SPACE1_DIM1 };
+    herr_t ret=0;
+
+    file = H5Fcreate(FILE32, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+    space = H5Screate_simple(SPACE1_RANK, dims, NULL);
+
+    /* write out an empty vlen dataset */
+    type = H5Tvlen_create(H5T_NATIVE_INT);
+    dset = H5Dcreate(file, "Dataset1.0", type, space, H5P_DEFAULT);
+    /* Don't write any data */
+    ret = H5Dclose(dset);
+    assert(ret>=0);
+    ret = H5Tclose(type);
+    assert(ret>=0);
+
+    /* write out an empty native integer dataset dataset */
+    dset = H5Dcreate(file, "Dataset2.0", H5T_NATIVE_INT, space, H5P_DEFAULT);
+    /* Don't write any data */
+    ret = H5Dclose(dset);
+    assert(ret>=0);
+
+    /* write out an empty native floating-point dataset dataset */
+    dset = H5Dcreate(file, "Dataset3.0", H5T_NATIVE_FLOAT, space, H5P_DEFAULT);
+    /* Don't write any data */
+    ret = H5Dclose(dset);
+    assert(ret>=0);
+
+    /* write out an empty array dataset */
+    type = H5Tarray_create(H5T_NATIVE_INT,SPACE1_RANK,dims,NULL);
+    dset = H5Dcreate(file, "Dataset4.0", type, space, H5P_DEFAULT);
+    /* Don't write any data */
+    ret = H5Dclose(dset);
+    assert(ret>=0);
+    ret = H5Tclose(type);
+    assert(ret>=0);
+
+    /* write out an empty compound dataset */
+    type = H5Tcreate(H5T_COMPOUND,sizeof(empty_struct));
+    H5Tinsert(type, "a", HOFFSET(empty_struct, a),H5T_NATIVE_INT);
+    H5Tinsert(type, "b", HOFFSET(empty_struct, b),H5T_NATIVE_FLOAT);
+    H5Tinsert(type, "c", HOFFSET(empty_struct, c),H5T_NATIVE_CHAR);
+    dset = H5Dcreate(file, "Dataset5.0", type, space, H5P_DEFAULT);
+    /* Don't write any data */
+    ret = H5Dclose(dset);
+    assert(ret>=0);
+    ret = H5Tclose(type);
+    assert(ret>=0);
+
+    ret = H5Sclose(space);
+    assert(ret>=0);
+
+    ret = H5Fclose(file);
+    assert(ret>=0);
+}
+
+static void gent_group_comments(void)
+{
+    hid_t fid, group;
+  
+    fid = H5Fcreate(FILE33, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+  
+    /* / */
+    group = H5Gcreate (fid, "/g1", 0);
+    H5Gset_comment(group, "/g1", "Comment for group /g1");
+    H5Gclose(group);
+    group = H5Gcreate (fid, "/g2", 0);
+    H5Gset_comment(group, "/g2", "Comment for group /g2");
+    H5Gclose(group);
+    group = H5Gcreate (fid, "/g3", 0);
+    H5Gset_comment(group, "/g3", "Comment for group /g3");
+    H5Gclose(group);
+  
+    /* /g1 */
+    group = H5Gcreate (fid, "/g1/g1.1", 0);
+    H5Gset_comment(group, "/g1/g1.1", "Comment for group /g1/g1.1");
+    H5Gclose(group);
+    group = H5Gcreate (fid, "/g1/g1.2", 0);
+    H5Gset_comment(group, "/g1/g1.2", "Comment for group /g1/g1.2");
+    H5Gclose(group);
+  
+    /* /g2 */
+    group = H5Gcreate (fid, "/g2/g2.1", 0);
+    H5Gset_comment(group, "/g2/g2.1", "Comment for group /g2/g2.1");
+    H5Gclose(group);
+  
+    /* /g3 */
+    group = H5Gcreate (fid, "/g3/g3.1", 0);
+    H5Gset_comment(group, "/g3/g3.1", "Comment for group /g3/g3.1");
+    H5Gclose(group);
+    group = H5Gcreate (fid, "/g3/g3.2", 0);
+    H5Gset_comment(group, "/g3/g3.2", "Comment for group /g3/g3.2");
+    H5Gclose(group);
+    group = H5Gcreate (fid, "/g3/g3.3", 0);
+    H5Gset_comment(group, "/g3/g3.3", "Comment for group /g3/g3.3");
+    H5Gclose(group);
+    group = H5Gcreate (fid, "/g3/g3.4", 0);
+    H5Gset_comment(group, "/g3/g3.4", "Comment for group /g3/g3.4");
+    H5Gclose(group);
+  
+    /* /g2/g2.1 */
+    group = H5Gcreate (fid, "/g2/g2.1/g2.1.1", 0);
+    H5Gset_comment(group, "/g2/g2.1/g2.1.1", "Comment for group /g2/g2.1/g2.1.1");
+    H5Gclose(group);
+    group = H5Gcreate (fid, "/g2/g2.1/g2.1.2", 0);
+    H5Gset_comment(group, "/g2/g2.1/g2.1.2", "Comment for group /g2/g2.1/g2.1.2");
+    H5Gclose(group);
+    group = H5Gcreate (fid, "/g2/g2.1/g2.1.3", 0);
+    H5Gset_comment(group, "/g2/g2.1/g2.1.3", "Comment for group /g2/g2.1/g2.1.3");
+    H5Gclose(group);
+  
+    H5Fclose(fid);
+}
+
+static
+void gent_split_file(void)
+{
+    hid_t fapl, fid, root, attr, space, dataset, atype;
+    char meta[] = "this is some metadata on this file";
+    hsize_t dims[2];
+    int i, j, dset[10][15];
+
+    fapl = H5Pcreate(H5P_FILE_ACCESS);
+    H5Pset_fapl_split(fapl, "-m.h5", H5P_DEFAULT, "-r.h5", H5P_DEFAULT);
+    fid = H5Fcreate(FILE34, H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
+    root = H5Gopen(fid, "/");
+
+    atype = H5Tcopy(H5T_C_S1);
+    H5Tset_size(atype, strlen(meta) + 1);
+    H5Tset_strpad(atype, H5T_STR_NULLTERM);
+
+    dims[0] = 1;
+    space = H5Screate_simple(1, dims, NULL);
+    attr = H5Acreate(root, "Metadata", atype, space, H5P_DEFAULT);
+    H5Awrite(attr, atype, meta);
+    H5Tclose(atype);
+    H5Sclose(space);
+    H5Aclose(attr);
+
+    /* create dataset */
+    dims[0] = 10;
+    dims[1] = 15;
+    space = H5Screate_simple(2, dims, NULL);
+    dataset = H5Dcreate(fid, "/dset1", H5T_STD_I32BE, space, H5P_DEFAULT);
+
+    for (i = 0; i < 10; i++)
+         for (j = 0; j < 15; j++)
+              dset[i][j] = i + j;
+
+    H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset);
+    H5Sclose(space);
+    H5Dclose(dataset);
+    H5Gclose(root);
+    H5Fclose(fid);
+    H5Pclose(fapl);
+}
+
+static
+void gent_family(void)
+{
+    hid_t fapl, fid, space, dataset;
+    hsize_t dims[2];
+    int i, j, dset[10][15];
+
+#define FAMILY_SIZE     256
+
+    fapl = H5Pcreate(H5P_FILE_ACCESS);
+    H5Pset_fapl_family(fapl, (hsize_t)FAMILY_SIZE, H5P_DEFAULT);
+
+    fid = H5Fcreate(FILE35, H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
+
+    /* create dataset */
+    dims[0] = 10;
+    dims[1] = 15;
+    space = H5Screate_simple(2, dims, NULL);
+    dataset = H5Dcreate(fid, "/dset1", H5T_STD_I32BE, space, H5P_DEFAULT);
+
+    for (i = 0; i < 10; i++)
+         for (j = 0; j < 15; j++)
+              dset[i][j] = i + j;
+
+    H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset);
+    H5Sclose(space);
+    H5Dclose(dataset);
+    H5Fclose(fid);
+    H5Pclose(fapl);
+}
+
+static const char *multi_letters = "msbrglo";
+
+static
+void gent_multi(void)
+{
+    hid_t fapl, fid, space, dataset;
+    hsize_t dims[2];
+    int i, j, dset[10][15];
+
+    /* Multi-file driver, general case of the split driver */
+    H5FD_mem_t mt, memb_map[H5FD_MEM_NTYPES];
+    hid_t memb_fapl[H5FD_MEM_NTYPES];
+    const char *memb_name[H5FD_MEM_NTYPES];
+    char sv[H5FD_MEM_NTYPES][1024];
+    haddr_t memb_addr[H5FD_MEM_NTYPES];
+
+    fapl = H5Pcreate(H5P_FILE_ACCESS);
+
+    HDmemset(memb_map, 0, sizeof memb_map);
+    HDmemset(memb_fapl, 0, sizeof memb_fapl);
+    HDmemset(memb_name, 0, sizeof memb_name);
+    HDmemset(memb_addr, 0, sizeof memb_addr);
+
+    assert(HDstrlen(multi_letters) == H5FD_MEM_NTYPES);
+
+    for (mt = H5FD_MEM_DEFAULT; mt < H5FD_MEM_NTYPES; ++mt) {
+        memb_fapl[mt] = H5P_DEFAULT;
+        sprintf(sv[mt], "%%s-%c.h5", multi_letters[mt]);
+        memb_name[mt] = sv[mt];
+        memb_addr[mt] = MAX(mt - 1,0) * (HADDR_MAX / 10);
+    }
+
+    H5Pset_fapl_multi(fapl, memb_map, memb_fapl, memb_name,
+                      memb_addr, FALSE);
+
+    fid = H5Fcreate(FILE36, H5F_ACC_TRUNC, H5P_DEFAULT, fapl);
+
+    /* create dataset */
+    dims[0] = 10;
+    dims[1] = 15;
+    space = H5Screate_simple(2, dims, NULL);
+    dataset = H5Dcreate(fid, "/dset1", H5T_STD_I32BE, space, H5P_DEFAULT);
+
+    for (i = 0; i < 10; i++)
+         for (j = 0; j < 15; j++)
+              dset[i][j] = i + j;
+
+    H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, dset);
+    H5Sclose(space);
+    H5Dclose(dataset);
+    H5Fclose(fid);
+    H5Pclose(fapl);
+}
+
+static void gent_large_objname(void)
+{
+    hid_t fid, group;
+    char grp_name[128];
+    register int i;
+  
+    fid = H5Fcreate(FILE37, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+    group = H5Gcreate(fid, "this_is_a_large_group_name", 0);
+
+    for (i = 0; i < 50; ++i) {
+        sprintf(grp_name, "this_is_a_large_group_name%d", i);
+        group = H5Gcreate(group, grp_name, 0);
+    }
+
+    H5Gclose(group);
+    H5Fclose(fid);
+}
+
+int main(void)
+{
+    gent_group();
+    gent_attribute();
+    gent_softlink();
+    gent_dataset();
+    gent_hardlink();
+    gent_compound_dt();
+    gent_all();
+    gent_loop();
+
+    gent_dataset2();
+    gent_compound_dt2();
+    gent_loop2();
+    gent_many();
+
+    gent_str();
+    gent_str2();
+
+    gent_enum();
+
+    gent_objref();
+    gent_datareg();
+
+    gent_nestcomp();
+
+    gent_opaque();
+
+    gent_bitfields();
+
+    gent_vldatatypes();
+    gent_vldatatypes2();
+    gent_vldatatypes3();
+    gent_vldatatypes4();
+
+    gent_array1();
+    gent_array2();
+    gent_array3();
+    gent_array4();
+    gent_array5();
+    gent_array6();
+    gent_array7();
+
+    gent_empty();
+    gent_group_comments();
+    gent_split_file();
+    gent_family();
+    gent_multi();
+
+    gent_large_objname();
+
+    return 0;
+}