Merge branch 'develop' of https://bitbucket.hdfgroup.org/scm/~jake.smith/hdf5 into feature/vfd_splitter_mirror_a

4 files changed, 1096 insertions, 352 deletions

diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index cba1d3a..e3bfeb3 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -32,6 +32,7 @@ if (NOT ONLY_SHARED_LIBS)
       PRIVATE "${HDF5_SRC_DIR};${HDF5_BINARY_DIR};${HDF5_TEST_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>"
       INTERFACE "$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/include>"
   )
+  target_compile_options(${HDF5_TEST_LIB_TARGET} PRIVATE "${HDF5_CMAKE_C_FLAGS}")
   TARGET_C_PROPERTIES (${HDF5_TEST_LIB_TARGET} STATIC)
   target_link_libraries (${HDF5_TEST_LIB_TARGET}
       PUBLIC ${LINK_LIBS} ${HDF5_LIB_TARGET}
@@ -50,9 +51,8 @@ if (BUILD_SHARED_LIBS)
       PRIVATE "${HDF5_SRC_DIR};${HDF5_BINARY_DIR};${HDF5_TEST_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>"
       INTERFACE "$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/include>"
   )
-  target_compile_definitions(${HDF5_TEST_LIBSH_TARGET}
-      PUBLIC "H5_BUILT_AS_DYNAMIC_LIB"
-  )
+  target_compile_options(${HDF5_TEST_LIBSH_TARGET} PRIVATE "${HDF5_CMAKE_C_FLAGS}")
+  target_compile_definitions(${HDF5_TEST_LIBSH_TARGET} PUBLIC "H5_BUILT_AS_DYNAMIC_LIB")
   TARGET_C_PROPERTIES (${HDF5_TEST_LIBSH_TARGET} SHARED)
   target_link_libraries (${HDF5_TEST_LIBSH_TARGET}
       PUBLIC ${LINK_LIBS} ${HDF5_LIBSH_TARGET}
@@ -293,13 +293,14 @@ set (H5_TESTS
     cache_logging
     cork
     swmr
-    thread_id
+    thread_id # special link
     vol
 )
 
 macro (ADD_H5_EXE file)
   add_executable (${file} ${HDF5_TEST_SOURCE_DIR}/${file}.c)
   target_include_directories (${file} PRIVATE "${HDF5_SRC_DIR};${HDF5_BINARY_DIR};${HDF5_TEST_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>")
+  target_compile_options(${file} PRIVATE "${HDF5_CMAKE_C_FLAGS}")
   if (NOT BUILD_SHARED_LIBS)
     TARGET_C_PROPERTIES (${file} STATIC)
     target_link_libraries (${file} PRIVATE ${HDF5_TEST_LIB_TARGET})
@@ -316,6 +317,7 @@ set (H5_TESTS_MULTIPLE
     testhdf5
     cache_image
     ttsafe
+    thread_id # special link
     mirror_vfd
 )
 # Only build single source tests here
@@ -331,6 +333,7 @@ endforeach ()
 ######### Also special handling of link libs #############
 #-- Adding test for chunk_info
 add_executable (chunk_info ${HDF5_TEST_SOURCE_DIR}/chunk_info.c)
+target_compile_options(chunk_info PRIVATE "${HDF5_CMAKE_C_FLAGS}")
 target_include_directories (chunk_info PRIVATE "${HDF5_SRC_DIR};${HDF5_BINARY_DIR};${HDF5_TEST_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>")
 if (NOT BUILD_SHARED_LIBS)
   TARGET_C_PROPERTIES (chunk_info STATIC)
@@ -343,6 +346,7 @@ set_target_properties (chunk_info PROPERTIES FOLDER test)
 
 #-- Adding test for direct_chunk
 add_executable (direct_chunk ${HDF5_TEST_SOURCE_DIR}/direct_chunk.c)
+target_compile_options(direct_chunk PRIVATE "${HDF5_CMAKE_C_FLAGS}")
 target_include_directories (direct_chunk PRIVATE "${HDF5_SRC_DIR};${HDF5_BINARY_DIR};${HDF5_TEST_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>")
 if (NOT BUILD_SHARED_LIBS)
   TARGET_C_PROPERTIES (direct_chunk STATIC)
@@ -357,6 +361,7 @@ set_target_properties (direct_chunk PROPERTIES FOLDER test)
 ######### Special handling for multiple sources #############
 #-- Adding test for testhdf5
 add_executable (testhdf5 ${testhdf5_SOURCES})
+target_compile_options(testhdf5 PRIVATE "${HDF5_CMAKE_C_FLAGS}")
 target_include_directories (testhdf5 PRIVATE "${HDF5_SRC_DIR};${HDF5_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>")
 if (NOT BUILD_SHARED_LIBS)
   TARGET_C_PROPERTIES (testhdf5 STATIC)
@@ -369,6 +374,7 @@ set_target_properties (testhdf5 PROPERTIES FOLDER test)
 
 #-- Adding test for cache_image
 add_executable (cache_image ${cache_image_SOURCES})
+target_compile_options(cache_image PRIVATE "${HDF5_CMAKE_C_FLAGS}")
 target_include_directories (cache_image PRIVATE "${HDF5_SRC_DIR};${HDF5_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>")
 if (NOT BUILD_SHARED_LIBS)
   TARGET_C_PROPERTIES (cache_image STATIC)
@@ -381,6 +387,7 @@ set_target_properties (cache_image PROPERTIES FOLDER test)
 
 #-- Adding test for ttsafe
 add_executable (ttsafe ${ttsafe_SOURCES})
+target_compile_options(ttsafe PRIVATE "${HDF5_CMAKE_C_FLAGS}")
 target_include_directories (ttsafe PRIVATE "${HDF5_SRC_DIR};${HDF5_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>")
 if (NOT BUILD_SHARED_LIBS)
   TARGET_C_PROPERTIES (ttsafe STATIC)
@@ -396,6 +403,25 @@ else ()
 endif ()
 set_target_properties (ttsafe PROPERTIES FOLDER test)
 
+######### Special handling for extra link lib of threads #############
+#-- Adding test for thread_id
+add_executable (thread_id ${HDF5_TEST_SOURCE_DIR}/thread_id.c)
+target_compile_options(thread_id PRIVATE "${HDF5_CMAKE_C_FLAGS}")
+target_include_directories (thread_id PRIVATE "${HDF5_SRC_DIR};${HDF5_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>")
+if (NOT BUILD_SHARED_LIBS)
+  TARGET_C_PROPERTIES (thread_id STATIC)
+  target_link_libraries (thread_id PRIVATE ${HDF5_TEST_LIB_TARGET})
+  if (NOT WIN32)
+    target_link_libraries (thread_id
+      PRIVATE $<$<BOOL:${HDF5_ENABLE_THREADSAFE}>:Threads::Threads>
+    )
+  endif ()
+else ()
+  TARGET_C_PROPERTIES (thread_id SHARED)
+  target_link_libraries (thread_id PRIVATE ${HDF5_TEST_LIBSH_TARGET} $<$<BOOL:${HDF5_ENABLE_THREADSAFE}>:Threads::Threads>)
+endif ()
+set_target_properties (thread_id PROPERTIES FOLDER test)
+
 #-- Adding test for mirror_vfd
 add_executable (mirror_vfd ${mirror_vfd_SOURCES})
 target_include_directories (mirror_vfd PRIVATE "${HDF5_SRC_DIR};${HDF5_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>")
@@ -476,6 +502,7 @@ endforeach ()
 #   This has to be copied to the test directory for execve() to find it
 #   and it can't be renamed (i.e., no <foo>-shared).
 add_executable (accum_swmr_reader ${HDF5_TEST_SOURCE_DIR}/accum_swmr_reader.c)
+target_compile_options(accum_swmr_reader PRIVATE "${HDF5_CMAKE_C_FLAGS}")
 target_include_directories (accum_swmr_reader PRIVATE "${HDF5_SRC_DIR};${HDF5_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>")
 if (NOT BUILD_SHARED_LIBS)
   TARGET_C_PROPERTIES (accum_swmr_reader STATIC)
@@ -511,6 +538,7 @@ endif ()
 ##############################################################################
 set (use_append_chunk_SOURCES ${HDF5_TEST_SOURCE_DIR}/use_append_chunk.c ${HDF5_TEST_SOURCE_DIR}/use_common.c)
 add_executable (use_append_chunk ${use_append_chunk_SOURCES})
+target_compile_options(use_append_chunk PRIVATE "${HDF5_CMAKE_C_FLAGS}")
 target_include_directories (use_append_chunk PRIVATE "${HDF5_SRC_DIR};${HDF5_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>")
 if (NOT BUILD_SHARED_LIBS)
   TARGET_C_PROPERTIES (use_append_chunk STATIC)
@@ -523,6 +551,7 @@ set_target_properties (use_append_chunk PROPERTIES FOLDER test)
 
 set (use_append_mchunks_SOURCES ${HDF5_TEST_SOURCE_DIR}/use_append_mchunks.c ${HDF5_TEST_SOURCE_DIR}/use_common.c)
 add_executable (use_append_mchunks ${use_append_mchunks_SOURCES})
+target_compile_options(use_append_mchunks PRIVATE "${HDF5_CMAKE_C_FLAGS}")
 target_include_directories (use_append_mchunks PRIVATE "${HDF5_SRC_DIR};${HDF5_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>")
 if (NOT BUILD_SHARED_LIBS)
   TARGET_C_PROPERTIES (use_append_mchunks STATIC)
@@ -535,6 +564,7 @@ set_target_properties (use_append_mchunks PROPERTIES FOLDER test)
 
 set (use_disable_mdc_flushes_SOURCES ${HDF5_TEST_SOURCE_DIR}/use_disable_mdc_flushes.c)
 add_executable (use_disable_mdc_flushes ${use_disable_mdc_flushes_SOURCES})
+target_compile_options(use_disable_mdc_flushes PRIVATE "${HDF5_CMAKE_C_FLAGS}")
 target_include_directories (use_disable_mdc_flushes PRIVATE "${HDF5_SRC_DIR};${HDF5_BINARY_DIR};$<$<BOOL:${HDF5_ENABLE_PARALLEL}>:${MPI_C_INCLUDE_DIRS}>")
 if (NOT BUILD_SHARED_LIBS)
   TARGET_C_PROPERTIES (use_disable_mdc_flushes STATIC)
diff --git a/test/gen_bounds.c b/test/gen_bounds.c
index 7b670f7..fe05a1e 100644
--- a/test/gen_bounds.c
+++ b/test/gen_bounds.c
@@ -27,8 +27,61 @@
  *              that they can or cannot read particular file format.
  */
 
+/* 
+ * Add two routines gen_ref_files() and gen_sel_files() to generate the 
+ * following test files:
+ *
+ *  (1) gen_ref_files():
+ *      bounds_ref_earliest_latest.h5
+ *      bounds_ref_latest_latest.h5
+ *      bounds_ref_v110_v110.h5
+ *      bounds_ref_v18_v18.h5
+ *  (1) gen_sel_files():
+ *      bounds_sel_earliest_latest.h5
+ *      bounds_sel_latest_latest.h5
+ *      bounds_sel_v112_v112.h5
+ *      bounds_sel_v110_v110.h5
+ *
+ * These test files will be copied to 1.12, 1.10 and 1.8 libraries for 
+ * compatibility testing.
+ */
 #include "h5test.h"
 
+/*
+ * Defines for gen_ref_files()
+ */
+/* File names used for references */
+#define FILENAME_REF_E_L        "bounds_ref_earliest_latest.h5"
+#define FILENAME_REF_L_L        "bounds_ref_latest_latest.h5"
+#define FILENAME_REF_V112_V112  "bounds_ref_v112_v112.h5"
+#define FILENAME_REF_V110_V110  "bounds_ref_v110_v110.h5"
+#define FILENAME_REF_V18_V18    "bounds_ref_v18_v18.h5"
+
+/* Dataset names for references */
+#define REVISED_REFS_DSET   "Revised_refs_dset"
+#define OLD_REF_OBJ_DSET    "Old_ref_object_dset"
+#define OLD_REF_REG_DSET    "Old_ref_region_dset"
+
+#define GROUP       "Group"
+#define ATTR        "Attr"
+#define DATASET     "Dataset"
+#define POWER32     4294967296      /* 2^32 */
+
+/*
+ * Defines for gen_sel_files()
+ */
+/* File names for hyperslab/point selections */
+#define FILENAME_SEL_E_L        "bounds_sel_earliest_latest.h5"
+#define FILENAME_SEL_L_L        "bounds_sel_latest_latest.h5"
+#define FILENAME_SEL_V112_V112  "bounds_sel_v112_v112.h5"
+#define FILENAME_SEL_V110_V110  "bounds_sel_v110_v110.h5"
+
+/* Dataset names for hyperslab/point selections */
+#define SEL_EX_REG_DSET     "Sel_ex32_reg_dset"
+#define SEL_EX_IRR_DSET     "Sel_ex32_irr_dset"
+#define SEL_EX_PT_DSET      "Sel_ex32_pt_dset"
+
+
 /***********************************************************************
  * gen_earliest_latest() creates file "bounds_earliest_latest.h5"
  *
@@ -594,6 +647,461 @@ error:
     return FAIL;
 } /* gen_v18_v18 */
 
+/***********************************************************************
+ * gen_sel_files() is used to create the following test files:
+ *      bounds_sel_earliest_latest.h5 
+ *      bounds_sel_latest_latest.h5 
+ *      bounds_sel_v112_v112.h5 
+ *      bounds_sel_v110_v110.h5 
+ *
+ * File contents for:
+ * --bounds_sel_earliest_latest.h5
+ * --bounds_sel_latest_latest.h5
+ * --bounds_sel_v112_v112.h5
+ *      --each file contains 3 datasets with old region reference type 
+ *          (1) Sel_ex32_reg_dset: 
+ *          --regular hyperslab selection exceeding 32 bits integer limit
+ *          (2) Sel_ex32_irr_dset:
+ *          --irregular hyperslab selection exceeding 32 bits integer limit
+ *          (3) Sel_ex32_pt_dset: 
+ *          --point selection exceeding 32 bits integer limit
+ *
+ * File contents for:
+ * --bounds_ref_v110_v110.h5 
+ *      (1) Sel_ex32_reg_dset: a dataset with old region reference type
+ *          --regular hyperslab selection exceeding 32 bits integer limit
+ *      (2) Sel_ex32_irr_dset: does not exist, cannot be created
+ *      (3) Sel_ex32_pt_dset: does not exist, cannot be created
+ *
+ * Return: SUCCEED/FAIL
+ *
+ ***********************************************************************/
+static herr_t gen_sel_files(const char *filename, H5F_libver_t low_bound,  H5F_libver_t high_bound)
+{
+    hid_t fid = H5I_INVALID_HID;         /* File ID */
+    hid_t fapl = H5I_INVALID_HID;        /* File access property list */
+    hid_t sid = H5I_INVALID_HID;         /* Dataspace ID */
+    hid_t did = H5I_INVALID_HID;         /* Dataset ID */
+    hsize_t numparticles = 8388608;
+    hsize_t total_particles = numparticles * 513;
+    hsize_t vdsdims[1] = {total_particles};     /* Dataset dimension size */
+    hsize_t coord[4];       /* Point selection */
+    hsize_t ref_start;      /* Starting location of hyperslab */
+    hsize_t ref_stride;     /* Stride of hyperslab */
+    hsize_t ref_count;      /* Element count of hyperslab */
+    hsize_t ref_block;      /* Block size of hyperslab */
+    hid_t ref_sid = H5I_INVALID_HID;     /* Dataspace ID for the reference dataset */
+    hid_t ref_did = H5I_INVALID_HID;     /* Dataset ID for the reference dataset */
+    hsize_t ref_dims[1] = {1};      /* Dimension for reference dataset */
+    hdset_reg_ref_t ref_wbuf[1];    /* Buffer for dataset region reference */
+
+    /*
+     * Create test file, attribute, group and dataset 
+     */
+
+   /* Create the test file */
+    if((fid = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT)) < 0)
+        TEST_ERROR;
+
+    /* Create a dataset */
+    if((sid = H5Screate_simple(1, vdsdims, NULL)) < 0)
+        TEST_ERROR;
+
+    if((did = H5Dcreate2(fid, DATASET, H5T_NATIVE_UINT, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
+        TEST_ERROR;
+
+    if(H5Sclose(sid) < 0)
+        TEST_ERROR;
+
+    if(H5Dclose(did) < 0)
+        TEST_ERROR;
+
+    if(H5Fclose(fid) < 0)
+        TEST_ERROR;
+
+    /* Create file access property list */
+    if((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0) 
+        TEST_ERROR;
+
+    /* Set to use the low/high bounds in fapl */
+    if(H5Pset_libver_bounds(fapl, low_bound, high_bound) < 0)
+        TEST_ERROR;
+
+    /* Open the file with fapl */
+    if((fid = H5Fopen(filename, H5F_ACC_RDWR, fapl)) < 0)
+        TEST_ERROR;
+
+    /* Open the dataset */
+    if((did = H5Dopen2(fid, DATASET, H5P_DEFAULT)) < 0)
+        TEST_ERROR;
+
+    /* Get the dataset's dataspace  */
+    if((sid = H5Dget_space(did)) < 0)
+        TEST_ERROR;
+
+    /* Create dataspace for the reference dataset */
+    ref_dims[0] = 1;
+    if((ref_sid = H5Screate_simple(1, ref_dims, NULL)) < 0)
+        TEST_ERROR;
+
+    /* Generate regular hyperslab exceeding 32 */
+    ref_start = 0;
+    ref_count = 2;
+    ref_block = 4;
+    ref_stride = POWER32;
+
+    if(H5Sselect_hyperslab(sid, H5S_SELECT_SET, &ref_start, &ref_stride, &ref_count, &ref_block) < 0)
+        TEST_ERROR;
+
+    /* Should succeed for v110 and above */
+    if(high_bound >= H5F_LIBVER_V110) {
+
+        /* Create the first reference */
+        if(H5Rcreate(&ref_wbuf[0], fid, DATASET, H5R_DATASET_REGION, sid) < 0)
+            TEST_ERROR;
+
+        /* Create the reference datset */
+        if((ref_did  = H5Dcreate2(fid, SEL_EX_REG_DSET, H5T_STD_REF_DSETREG, ref_sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
+            TEST_ERROR;
+
+        /* Write to the reference datset */
+        if(H5Dwrite(ref_did, H5T_STD_REF_DSETREG, H5S_ALL, H5S_ALL, H5P_DEFAULT, ref_wbuf) < 0)
+            TEST_ERROR;
+
+        if(H5Dclose(ref_did) < 0)
+            TEST_ERROR;
+    } 
+
+    /* Generate irregular hyperslab exceeding 32 */
+    ref_start = 8;
+    ref_count = 5;
+    ref_block = 2;
+    ref_stride = POWER32;
+    if(H5Sselect_hyperslab(sid, H5S_SELECT_OR, &ref_start, &ref_stride, &ref_count, &ref_block) < 0)
+        TEST_ERROR;
+
+    /* Should succeed for v112 and above */
+    if(high_bound >= H5F_LIBVER_V112) {
+
+        /* Create the second reference */
+        if(H5Rcreate(&ref_wbuf[0], fid, DATASET, H5R_DATASET_REGION, sid) < 0)
+            TEST_ERROR;
+
+        /* Create the reference datset */
+        if((ref_did  = H5Dcreate2(fid, SEL_EX_IRR_DSET, H5T_STD_REF_DSETREG, ref_sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
+            TEST_ERROR;
+
+        /* Write to the reference datset */
+        if(H5Dwrite(ref_did, H5T_STD_REF_DSETREG, H5S_ALL, H5S_ALL, H5P_DEFAULT, ref_wbuf) < 0)
+            TEST_ERROR;
+
+        if(H5Dclose(ref_did) < 0)
+            TEST_ERROR;
+    }
+
+    /* Generate point selection exceeding 32 */
+    coord[0] = 5;
+    coord[1] = 15;
+    coord[2] = POWER32 + 1;
+    coord[3] = 19;
+
+    if(H5Sselect_elements(sid, H5S_SELECT_SET, (size_t)4, coord) < 0)
+        TEST_ERROR;
+
+    /* Should succeed for v112 and above */
+    if(high_bound >= H5F_LIBVER_V112) {
+
+        /* Create the third reference */
+        if(H5Rcreate(&ref_wbuf[0], fid, DATASET,  H5R_DATASET_REGION, sid) < 0)
+            TEST_ERROR;
+
+        /* Create the reference datset */
+        if((ref_did  = H5Dcreate2(fid, SEL_EX_PT_DSET, H5T_STD_REF_DSETREG, ref_sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
+            TEST_ERROR;
+
+        /* Write to the reference datset */
+        if(H5Dwrite(ref_did, H5T_STD_REF_DSETREG, H5S_ALL, H5S_ALL, H5P_DEFAULT, ref_wbuf) < 0)
+            TEST_ERROR;
+
+        if(H5Dclose(ref_did) < 0)
+            TEST_ERROR;
+    } 
+
+    /* Closing */
+    if(H5Sclose(ref_sid) < 0)
+        TEST_ERROR;
+
+    if(H5Dclose(did) < 0)
+        TEST_ERROR;
+
+    if(H5Sclose(sid) < 0)
+        TEST_ERROR;
+
+    if(H5Fclose(fid) < 0)
+        TEST_ERROR;
+
+    return SUCCEED;
+
+error:
+    H5E_BEGIN_TRY {
+        H5Dclose(ref_did);
+        H5Sclose(ref_sid);
+        H5Dclose(did);
+        H5Sclose(sid);
+        H5Pclose(fapl);
+        H5Fclose(fid);
+    } H5E_END_TRY;
+
+    return FAIL;
+
+} /* gen_sel_files() */
+
+/***********************************************************************
+ * gen_ref_files() is used to create the following test files:
+ *      bounds_ref_earliest_latest.h5 
+ *      bounds_ref_latest_latest.h5 
+ *      bounds_ref_v110_v110.h5 
+ *      bounds_ref_v18_v18.h5 
+ *
+ * File contents for:
+ * --bounds_ref_earliest_latest.h5
+ * --bounds_ref_latest_latest.h5
+ * --bounds_ref_v112_v112.h5
+ *      (1) Revised_refs_dset: a dataset created with the revised reference type
+ *          --attribute reference 
+ *          --object reference
+ *          --dataset region reference
+ *      (2) Old_ref_object_dset: 
+ *          --a dataset created with the old object reference type
+ *      (3) Old_ref_region_dset: 
+ *          --a dataset created with the old dataset region reference type
+ *
+ * File contents for:
+ * --bounds_ref_v110_v110.h5 
+ * --bounds_ref_v18_v18.h5 
+ *      (1) Old_ref_object_dset: 
+ *          --a dataset created with the old object reference type
+ *      (2) Old_ref_region_dset: 
+ *          --a dataset created with the old dataset region reference type
+ *
+ * Return: SUCCEED/FAIL
+ *
+ ***********************************************************************/
+static herr_t gen_ref_files(const char *filename, H5F_libver_t low_bound,  H5F_libver_t high_bound)
+{
+    hid_t fid = H5I_INVALID_HID;         /* File ID */
+    hid_t gid = H5I_INVALID_HID;         /* Group ID */
+    hid_t fapl = H5I_INVALID_HID;        /* File access property list */
+    hid_t aid = H5I_INVALID_HID;         /* Attribute ID */
+    hid_t asid = H5I_INVALID_HID;        /* Dataspace ID for attribute */
+    hid_t sid = H5I_INVALID_HID;         /* Dataspace ID */
+    hid_t did = H5I_INVALID_HID;         /* Dataset ID */
+    hsize_t dims[1] = {100};    /* Dimension size */
+    unsigned *dwbuf = NULL;     /* Buffer for writing data */
+    hid_t ref_sid = H5I_INVALID_HID;    /* Dataspace ID for the reference dataset */
+    hid_t ref_did = H5I_INVALID_HID;    /* Dataset ID for the reference dataset */
+    hsize_t rev_ref_dims[1] = {3};      /* Dimension size for the reference dataset */
+    H5R_ref_t rev_ref_wbuf[3];          /* Buffer for storing the revised references */
+    hobj_ref_t old_ref_obj_wbuf[1];     /* Buffer for storing the old reference object */
+    hdset_reg_ref_t old_ref_reg_wbuf[1];    /* Buffer for storing the old dataset region reference */
+    hsize_t old_ref_dims[] = {1};           /* Dimension size for the reference dataset */
+    hsize_t start[1];       /* Starting location of hyperslab */
+    hsize_t stride[1];      /* Stride of hyperslab */
+    hsize_t count[1];       /* Element count of hyperslab */
+    hsize_t block[1];       /* Block size of hyperslab */
+    unsigned i;             /* Local index variable */
+
+    /*
+     * Create test file, attribute, group and dataset 
+     */
+
+    if((dwbuf = HDcalloc(sizeof(unsigned), 100)) == NULL)
+        TEST_ERROR;
+
+    /* Create the test file */
+    if((fid = H5Fcreate(filename, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT)) < 0)
+        TEST_ERROR;
+
+    /* Create dataspace for the attribute */
+    if((asid = H5Screate(H5S_SCALAR)) < 0)
+        TEST_ERROR;
+
+    /* Create an attribute to the root group */
+    if((aid = H5Acreate2(fid, ATTR, H5T_NATIVE_UINT, asid, H5P_DEFAULT, H5P_DEFAULT)) < 0)
+        TEST_ERROR;
+
+    /* Create a group */
+    if((gid = H5Gcreate2(fid, GROUP, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
+        TEST_ERROR;
+
+    /* Create dataspace for the dataset */
+    if((sid = H5Screate_simple(1, dims, NULL)) < 0)
+        TEST_ERROR;
+
+    /* Create a dataset in the group */
+    if((did = H5Dcreate2(gid, DATASET, H5T_NATIVE_UINT, sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
+        TEST_ERROR;
+
+    /* Initialize data to write */
+    for(i = 0; i < 100; i++)
+        dwbuf[i] = i * 3;
+
+    /* Write data to disk */
+    if(H5Dwrite(did, H5T_NATIVE_UINT, H5S_ALL, H5S_ALL, H5P_DEFAULT, dwbuf) < 0)
+        TEST_ERROR;
+
+    /* Closing */
+    if(H5Dclose(did) < 0)
+        TEST_ERROR;
+    if(H5Sclose(sid) < 0)
+        TEST_ERROR;
+    if(H5Sclose(asid) < 0)
+        TEST_ERROR;
+    if(H5Aclose(aid) < 0)
+        TEST_ERROR;
+    if(H5Gclose(gid) < 0)
+        TEST_ERROR;
+    if(H5Fclose(fid) < 0)
+        TEST_ERROR;
+
+    if(dwbuf) {
+        HDfree(dwbuf);
+        dwbuf = NULL;
+    }
+    
+    /* Create file access property list */
+    if((fapl = H5Pcreate(H5P_FILE_ACCESS)) < 0) TEST_ERROR;
+
+    /* Set to use the low/high bounds in fapl */
+    if(H5Pset_libver_bounds(fapl, low_bound, high_bound) < 0)
+        TEST_ERROR;
+
+    /* Open the file with fapl */
+    if((fid = H5Fopen(filename, H5F_ACC_RDWR, fapl)) <0)
+        TEST_ERROR;
+
+    /* 
+     * Create the revised and old references in the file
+     */
+
+    /* Retrieve dataspace for the existing dataset */
+    if((did = H5Dopen2(fid, "/Group/Dataset", H5P_DEFAULT)) < 0)
+        TEST_ERROR;
+    if((sid = H5Dget_space(did)) < 0)
+        TEST_ERROR;
+
+    /* Select 15 2x1 hyperslabs for the dataset region reference */
+    start[0]  = 2;
+    stride[0] = 5;
+    count[0]  = 15;
+    block[0]  = 2;
+    if(H5Sselect_hyperslab(sid, H5S_SELECT_SET, start, stride, count, block) < 0)
+        TEST_ERROR;
+
+
+    if(high_bound >= H5F_LIBVER_V112) {
+
+        /* Create dataspace for the reference dataset */
+        if((ref_sid = H5Screate_simple(1, rev_ref_dims, NULL)) < 0)
+            TEST_ERROR;
+
+        /* Create a dataset with the revised reference type */
+        ref_did = H5Dcreate2(fid, REVISED_REFS_DSET, H5T_STD_REF, ref_sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+
+        /* Store the reference to "Attr" */
+        if(H5Rcreate_attr(fid, "/", "Attr", H5P_DEFAULT, &rev_ref_wbuf[0]) < 0)
+            TEST_ERROR;
+
+        /* Store the reference to /Group */
+        if(H5Rcreate_object(fid, "/Group", H5P_DEFAULT, &rev_ref_wbuf[1]) < 0)
+            TEST_ERROR;
+
+        /* Store the dataset region referenced to /Group/Dataset */
+        if(H5Rcreate_region(fid, "/Group/Dataset", sid, H5P_DEFAULT, &rev_ref_wbuf[2]) < 0)
+            TEST_ERROR;
+
+        /* Write to the reference dataset */
+        if(H5Dwrite(ref_did, H5T_STD_REF, H5S_ALL, H5S_ALL, H5P_DEFAULT, rev_ref_wbuf) < 0)
+            TEST_ERROR;
+
+        /* Destroy references */
+        for(i = 0; i < 3; i++)
+            if(H5Rdestroy(&rev_ref_wbuf[i]) < 0)
+                TEST_ERROR;
+
+        /* Closing */
+        if(H5Dclose(ref_did) < 0)
+            TEST_ERROR;
+
+        if(H5Sclose(ref_sid) < 0)
+            TEST_ERROR;
+    }
+
+    /* Create dataspace for the reference dataset */
+    if((ref_sid = H5Screate_simple(1, old_ref_dims, NULL)) < 0)
+        TEST_ERROR;
+
+    /* Create a dataset with the old object reference type */
+    if((ref_did = H5Dcreate2(fid, OLD_REF_OBJ_DSET, H5T_STD_REF_OBJ, ref_sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
+        TEST_ERROR;
+
+    /* Create reference to /Group */
+    if(H5Rcreate(&old_ref_obj_wbuf[0], fid, "/Group", H5R_OBJECT, -1) < 0)
+        TEST_ERROR;
+
+    /* Write to the reference dataset */
+    if(H5Dwrite(ref_did, H5T_STD_REF_OBJ, H5S_ALL, H5S_ALL, H5P_DEFAULT, old_ref_obj_wbuf) < 0)
+        TEST_ERROR;
+
+    /* Close the dataset */
+    if(H5Dclose(ref_did) < 0)
+        TEST_ERROR;
+
+
+    /* Create a dataset with the old dataset region reference type */
+    if((ref_did = H5Dcreate2(fid, OLD_REF_REG_DSET, H5T_STD_REF_DSETREG, ref_sid, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT)) < 0)
+        TEST_ERROR;
+
+    /* Create dataset region reference */
+    if(H5Rcreate(&old_ref_reg_wbuf[0], fid, "/Group/Dataset", H5R_DATASET_REGION, sid) < 0)
+        TEST_ERROR;
+
+    /* Write selection to the reference dataset */
+    if(H5Dwrite(ref_did, H5T_STD_REF_DSETREG, H5S_ALL, H5S_ALL, H5P_DEFAULT, old_ref_reg_wbuf) < 0)
+        TEST_ERROR;
+
+    /* Closing */
+    if(H5Dclose(ref_did) < 0)
+        TEST_ERROR;
+    if(H5Sclose(ref_sid) < 0)
+        TEST_ERROR;
+
+    if(H5Dclose(did) < 0)
+        TEST_ERROR;
+    if(H5Sclose(sid) < 0)
+        TEST_ERROR;
+    if(H5Pclose(fapl) < 0) 
+        TEST_ERROR;
+    if(H5Fclose(fid) < 0)
+        TEST_ERROR;
+
+    return SUCCEED;
+
+error:
+    H5E_BEGIN_TRY {
+        H5Dclose(ref_did);
+        H5Sclose(ref_sid);
+        H5Dclose(did);
+        H5Sclose(sid);
+        H5Pclose(fapl);
+        H5Fclose(fid);
+        HDfree(dwbuf);
+    } H5E_END_TRY;
+
+    return FAIL;
+
+} /* gen_ref_files() */
+
 int main(void)
 {
     /* Generate file bounds_earliest_latest.h5 */
@@ -611,6 +1119,51 @@ int main(void)
     /* Generate file bounds_v18_v18.h5 */
     if (gen_v18_v18() < 0) TEST_ERROR;
 
+
+    /* 
+     * Files generated via gen_ref_files()
+     */
+
+    /* Generate bounds_ref_earliest_latest.h5 */
+    if(gen_ref_files(FILENAME_REF_E_L, H5F_LIBVER_EARLIEST, H5F_LIBVER_LATEST) < 0)
+        TEST_ERROR;
+
+    /* Generate bounds_ref_latest_latest.h5 */
+    if(gen_ref_files(FILENAME_REF_L_L, H5F_LIBVER_LATEST, H5F_LIBVER_LATEST) < 0)
+        TEST_ERROR;
+
+    /* Generate bounds_ref_v112_v112.h5 */
+    if(gen_ref_files(FILENAME_REF_V112_V112, H5F_LIBVER_V112, H5F_LIBVER_V112) < 0)
+        TEST_ERROR;
+
+    /* Generate bounds_ref_v110_v110.h5 */
+    if(gen_ref_files(FILENAME_REF_V110_V110, H5F_LIBVER_V110, H5F_LIBVER_V110) < 0)
+        TEST_ERROR;
+
+    /* Generate bounds_ref_v18_v18.h5 */
+    if(gen_ref_files(FILENAME_REF_V18_V18, H5F_LIBVER_V18, H5F_LIBVER_V18) < 0)
+        TEST_ERROR;
+
+    /* 
+     * Files generated via gen_sel_files()
+     */
+
+    /* Generate bounds_sel_earliest_latest.h5 */
+    if(gen_sel_files(FILENAME_SEL_E_L, H5F_LIBVER_EARLIEST, H5F_LIBVER_LATEST) < 0)
+        TEST_ERROR;
+
+    /* Generate bounds_sel_latest_latest.h5 */
+    if(gen_sel_files(FILENAME_SEL_L_L, H5F_LIBVER_LATEST, H5F_LIBVER_LATEST) < 0)
+        TEST_ERROR;
+
+    /* Generate bounds_sel_v112_v112.h5 */
+    if(gen_sel_files(FILENAME_SEL_V112_V112, H5F_LIBVER_V112, H5F_LIBVER_V112) < 0)
+        TEST_ERROR;
+
+    /* Generate bounds_sel_v110_v110.h5 */
+    if(gen_sel_files(FILENAME_SEL_V110_V110, H5F_LIBVER_V110, H5F_LIBVER_V110) < 0)
+        TEST_ERROR;
+
     return EXIT_SUCCESS;
 
 error:
diff --git a/test/tmisc.c b/test/tmisc.c
index 0ea9c4c..6eb6872 100644
--- a/test/tmisc.c
+++ b/test/tmisc.c
@@ -329,6 +329,14 @@ typedef struct
 /* and bad offset values are written to that file for testing */
 #define MISC33_FILE             "bad_offset.h5"
 
+/* Definitions for misc. test #35 */
+#define MISC35_SPACE_RANK       3
+#define MISC35_SPACE_DIM1       3
+#define MISC35_SPACE_DIM2       15
+#define MISC35_SPACE_DIM3       13
+#define MISC35_NPOINTS          10
+
+
 /****************************************************************
 **
 **  test_misc1(): test unlinking a dataset from a group and immediately
@@ -5684,6 +5692,118 @@ test_misc34(void)
 
 /****************************************************************
 **
+**  test_misc35(): Check operation of free-list routines
+**
+****************************************************************/
+static void
+test_misc35(void)
+{
+    hid_t sid = H5I_INVALID_HID; /* Dataspace ID */
+    hsize_t dims[] = {MISC35_SPACE_DIM1, MISC35_SPACE_DIM2, MISC35_SPACE_DIM3};   /* Dataspace dims */
+    hsize_t coord[MISC35_NPOINTS][MISC35_SPACE_RANK] =  /* Coordinates for point selection */
+        {{0,10, 5},
+         {1, 2, 7},
+         {2, 4, 9},
+         {0, 6,11},
+         {1, 8,13},
+         {2,12, 0},
+         {0,14, 2},
+         {1, 0, 4},
+         {2, 1, 6},
+         {0, 3, 8}};
+    size_t reg_size_start;    /* Initial amount of regular memory allocated */
+    size_t arr_size_start;    /* Initial amount of array memory allocated */
+    size_t blk_size_start;    /* Initial amount of block memory allocated */
+    size_t fac_size_start;    /* Initial amount of factory memory allocated */
+    size_t reg_size_final;    /* Final amount of regular memory allocated */
+    size_t arr_size_final;    /* Final amount of array memory allocated */
+    size_t blk_size_final;    /* Final amount of block memory allocated */
+    size_t fac_size_final;    /* Final amount of factory memory allocated */
+    H5_alloc_stats_t alloc_stats;       /* Memory stats */
+    herr_t ret;         /* Return value */
+
+    /* Output message about test being performed */
+    MESSAGE(5, ("Free-list API calls"));
+
+    /* Create dataspace */
+    /* (Allocates array free-list nodes) */
+    sid = H5Screate_simple(MISC35_SPACE_RANK, dims, NULL);
+    CHECK(sid, H5I_INVALID_HID, "H5Screate_simple");
+
+    /* Select sequence of ten points */
+    ret = H5Sselect_elements(sid, H5S_SELECT_SET, (size_t)MISC35_NPOINTS, (const hsize_t *)coord);
+    CHECK(ret, FAIL, "H5Sselect_elements");
+
+    /* Close dataspace */
+    ret = H5Sclose(sid);
+    CHECK(ret, FAIL, "H5Sclose");
+
+
+    /* Retrieve initial free list values */
+    ret = H5get_free_list_sizes(&reg_size_start, &arr_size_start, &blk_size_start, &fac_size_start);
+    CHECK(ret, FAIL, "H5get_free_list_sizes");
+
+#if !defined H5_USING_MEMCHECKER
+    /* All the free list values should be >0 */
+    CHECK(reg_size_start, 0, "H5get_free_list_sizes");
+    CHECK(arr_size_start, 0, "H5get_free_list_sizes");
+    CHECK(blk_size_start, 0, "H5get_free_list_sizes");
+    CHECK(fac_size_start, 0, "H5get_free_list_sizes");
+#else /* H5_MEMORY_ALLOC_SANITY_CHECK */
+    /* All the values should be == 0 */
+    VERIFY(reg_size_start, 0, "H5get_free_list_sizes");
+    VERIFY(arr_size_start, 0, "H5get_free_list_sizes");
+    VERIFY(blk_size_start, 0, "H5get_free_list_sizes");
+    VERIFY(fac_size_start, 0, "H5get_free_list_sizes");
+#endif /* H5_MEMORY_ALLOC_SANITY_CHECK */
+
+    /* Garbage collect the free lists */
+    ret = H5garbage_collect();
+    CHECK(ret, FAIL, "H5garbage_collect");
+
+    /* Retrieve free list values again */
+    ret = H5get_free_list_sizes(&reg_size_final, &arr_size_final, &blk_size_final, &fac_size_final);
+    CHECK(ret, FAIL, "H5get_free_list_sizes");
+
+    /* All the free list values should be <= previous values */
+    if(reg_size_final > reg_size_start)
+        ERROR("reg_size_final > reg_size_start");
+    if(arr_size_final > arr_size_start)
+        ERROR("arr_size_final > arr_size_start");
+    if(blk_size_final > blk_size_start)
+        ERROR("blk_size_final > blk_size_start");
+    if(fac_size_final > fac_size_start)
+        ERROR("fac_size_final > fac_size_start");
+
+    /* Retrieve memory allocation statistics */
+    ret = H5get_alloc_stats(&alloc_stats);
+    CHECK(ret, FAIL, "H5get_alloc_stats");
+
+#if defined H5_MEMORY_ALLOC_SANITY_CHECK
+    /* All the values should be >0 */
+    CHECK(alloc_stats.total_alloc_bytes, 0, "H5get_alloc_stats");
+    CHECK(alloc_stats.curr_alloc_bytes, 0, "H5get_alloc_stats");
+    CHECK(alloc_stats.peak_alloc_bytes, 0, "H5get_alloc_stats");
+    CHECK(alloc_stats.max_block_size, 0, "H5get_alloc_stats");
+    CHECK(alloc_stats.total_alloc_blocks_count, 0, "H5get_alloc_stats");
+    CHECK(alloc_stats.curr_alloc_blocks_count, 0, "H5get_alloc_stats");
+    CHECK(alloc_stats.peak_alloc_blocks_count, 0, "H5get_alloc_stats");
+#else /* H5_MEMORY_ALLOC_SANITY_CHECK */
+    /* All the values should be == 0 */
+    VERIFY(alloc_stats.total_alloc_bytes, 0, "H5get_alloc_stats");
+    VERIFY(alloc_stats.curr_alloc_bytes, 0, "H5get_alloc_stats");
+    VERIFY(alloc_stats.peak_alloc_bytes, 0, "H5get_alloc_stats");
+    VERIFY(alloc_stats.max_block_size, 0, "H5get_alloc_stats");
+    VERIFY(alloc_stats.total_alloc_blocks_count, 0, "H5get_alloc_stats");
+    VERIFY(alloc_stats.curr_alloc_blocks_count, 0, "H5get_alloc_stats");
+    VERIFY(alloc_stats.peak_alloc_blocks_count, 0, "H5get_alloc_stats");
+#endif /* H5_MEMORY_ALLOC_SANITY_CHECK */
+
+} /* end test_misc35() */
+
+
+/****************************************************************
+**
 **  test_misc(): Main misc. test routine.
 **
 ****************************************************************/
@@ -5731,6 +5851,7 @@ test_misc(void)
     test_misc32();      /* Test filter memory allocation functions */
     test_misc33();      /* Test to verify that H5HL_offset_into() returns error if offset exceeds heap block */
     test_misc34();      /* Test behavior of 0 and NULL in H5MM API calls */
+    test_misc35();      /* Test behavior of free-list & allocation statistics API calls */
 
 } /* test_misc() */
 
diff --git a/test/trefer.c b/test/trefer.c
index 32caf5e..d399fef 100644
--- a/test/trefer.c
+++ b/test/trefer.c
@@ -631,173 +631,179 @@ test_reference_region(H5F_libver_t libver_low, H5F_libver_t libver_high)
     CHECK(sid1, H5I_INVALID_HID, "H5Screate_simple");
 
     /* Create a dataset */
-    dset1 = H5Dcreate2(fid1, "Dataset1", H5T_STD_REF, sid1, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
-    CHECK(dset1, H5I_INVALID_HID, "H5Dcreate2");
+    H5E_BEGIN_TRY {
+        dset1 = H5Dcreate2(fid1, "Dataset1", H5T_STD_REF, sid1, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+    } H5E_END_TRY;
+    
+    if(dset1 < 0) {
+        VERIFY(libver_high <= H5F_LIBVER_V110, TRUE, "H5Dcreate2");
 
-    /* Create references */
+        ret = H5Sclose(sid1);
+        CHECK(ret, FAIL, "H5Sclose");
 
-    /* Select 6x6 hyperslab for first reference */
-    start[0] = 2; start[1] = 2;
-    stride[0] = 1; stride[1] = 1;
-    count[0] = 1; count[1] = 1;
-    block[0] = 6; block[1] = 6;
-    ret = H5Sselect_hyperslab(sid2, H5S_SELECT_SET, start, stride, count, block);
-    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+        ret = H5Sclose(sid2);
+        CHECK(ret, FAIL, "H5Sclose");
 
-    ret = (int)H5Sget_select_npoints(sid2);
-    VERIFY(ret, 36, "H5Sget_select_npoints");
+        ret = H5Pclose(fapl);
+        CHECK(ret, FAIL, "H5Pclose");
 
-    /* Store first dataset region */
-    ret = H5Rcreate_region(fid1, "/Dataset2", sid2, H5P_DEFAULT, &wbuf[0]);
-    CHECK(ret, FAIL, "H5Rcreate_region");
-    ret = H5Rget_obj_type3(&wbuf[0], H5P_DEFAULT, &obj_type);
-    CHECK(ret, FAIL, "H5Rget_obj_type3");
-    VERIFY(obj_type, H5O_TYPE_DATASET, "H5Rget_obj_type3");
+        ret = H5Fclose(fid1);
+        CHECK(ret, FAIL, "H5Fclose");
+    } else {
 
-    /* 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;
-    ret = H5Sselect_elements(sid2, H5S_SELECT_SET, (size_t)POINT1_NPOINTS, (const hsize_t *)coord1);
-    CHECK(ret, FAIL, "H5Sselect_elements");
+        CHECK(dset1, H5I_INVALID_HID, "H5Dcreate2");
 
-    ret = (int)H5Sget_select_npoints(sid2);
-    VERIFY(ret, SPACE2_DIM2, "H5Sget_select_npoints");
+        /* Create references */
 
-    /* Store second dataset region */
-    ret = H5Rcreate_region(fid1, "/Dataset2", sid2, H5P_DEFAULT, &wbuf[1]);
-    CHECK(ret, FAIL, "H5Rcreate_region");
+        /* Select 6x6 hyperslab for first reference */
+        start[0] = 2; start[1] = 2;
+        stride[0] = 1; stride[1] = 1;
+        count[0] = 1; count[1] = 1;
+        block[0] = 6; block[1] = 6;
+        ret = H5Sselect_hyperslab(sid2, H5S_SELECT_SET, start, stride, count, block);
+        CHECK(ret, FAIL, "H5Sselect_hyperslab");
 
-    /* Select unlimited hyperslab for third reference */
-    start[0] = 1;
-    start[1] = 8;
-    stride[0] = 4;
-    stride[1] = 1;
-    count[0] = H5S_UNLIMITED;
-    count[1] = 1;
-    block[0] = 2;
-    block[1] = 2;
-    ret = H5Sselect_hyperslab(sid2, H5S_SELECT_SET, start, stride, count, block);
-    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+        ret = (int)H5Sget_select_npoints(sid2);
+        VERIFY(ret, 36, "H5Sget_select_npoints");
 
-    hssize_ret = H5Sget_select_npoints(sid2);
-    VERIFY(hssize_ret, (hssize_t)H5S_UNLIMITED, "H5Sget_select_npoints");
+        /* Store first dataset region */
+        ret = H5Rcreate_region(fid1, "/Dataset2", sid2, H5P_DEFAULT, &wbuf[0]);
+        CHECK(ret, FAIL, "H5Rcreate_region");
+        ret = H5Rget_obj_type3(&wbuf[0], H5P_DEFAULT, &obj_type);
+        CHECK(ret, FAIL, "H5Rget_obj_type3");
+        VERIFY(obj_type, H5O_TYPE_DATASET, "H5Rget_obj_type3");
 
-    /* Store third dataset region */
-    ret = H5Rcreate_region(fid1, "/Dataset2", sid2, H5P_DEFAULT, &wbuf[2]);
-    CHECK(ret, FAIL, "H5Rcreate_region");
+        /* 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;
+        ret = H5Sselect_elements(sid2, H5S_SELECT_SET, (size_t)POINT1_NPOINTS, (const hsize_t *)coord1);
+        CHECK(ret, FAIL, "H5Sselect_elements");
 
-    ret = H5Rget_obj_type3(&wbuf[2], H5P_DEFAULT, &obj_type);
-    CHECK(ret, FAIL, "H5Rget_obj_type3");
-    VERIFY(obj_type, H5O_TYPE_DATASET, "H5Rget_obj_type3");
+        ret = (int)H5Sget_select_npoints(sid2);
+        VERIFY(ret, SPACE2_DIM2, "H5Sget_select_npoints");
 
-    /* Store fourth dataset region */
-    ret = H5Rcreate_region(fid1, "/Dataset2", sid2, H5P_DEFAULT, &wbuf[3]);
-    CHECK(ret, FAIL, "H5Rcreate_region");
+        /* Store second dataset region */
+        ret = H5Rcreate_region(fid1, "/Dataset2", sid2, H5P_DEFAULT, &wbuf[1]);
+        CHECK(ret, FAIL, "H5Rcreate_region");
 
-    /* Write selection to disk */
-    H5E_BEGIN_TRY {
-        ret = H5Dwrite(dset1, H5T_STD_REF, H5S_ALL, H5S_ALL, H5P_DEFAULT, wbuf);
-    } H5E_END_TRY;
+        /* Select unlimited hyperslab for third reference */
+        start[0] = 1;
+        start[1] = 8;
+        stride[0] = 4;
+        stride[1] = 1;
+        count[0] = H5S_UNLIMITED;
+        count[1] = 1;
+        block[0] = 2;
+        block[1] = 2;
+        ret = H5Sselect_hyperslab(sid2, H5S_SELECT_SET, start, stride, count, block);
+        CHECK(ret, FAIL, "H5Sselect_hyperslab");
 
-    if(libver_high < H5F_LIBVER_V110)
-        VERIFY(ret, FAIL, "H5Dwrite");
-    else
-        CHECK(ret, FAIL, "H5Dwrite");
+        hssize_ret = H5Sget_select_npoints(sid2);
+        VERIFY(hssize_ret, (hssize_t)H5S_UNLIMITED, "H5Sget_select_npoints");
 
-    /*
-     * Store a dataset region reference which will not get written to disk
-     */
+        /* Store third dataset region */
+        ret = H5Rcreate_region(fid1, "/Dataset2", sid2, H5P_DEFAULT, &wbuf[2]);
+        CHECK(ret, FAIL, "H5Rcreate_region");
 
-    /* Create the dataspace of the region references */
-    space_NA = H5Screate_simple(1, dims_NA, NULL);
-    CHECK(space_NA, H5I_INVALID_HID, "H5Screate_simple");
+        ret = H5Rget_obj_type3(&wbuf[2], H5P_DEFAULT, &obj_type);
+        CHECK(ret, FAIL, "H5Rget_obj_type3");
+        VERIFY(obj_type, H5O_TYPE_DATASET, "H5Rget_obj_type3");
 
-    /* Create the dataset and write the region references to it */
-    dset_NA = H5Dcreate2(fid1, "DS_NA", H5T_STD_REF, space_NA, H5P_DEFAULT,
-                H5P_DEFAULT, H5P_DEFAULT);
-    CHECK(dset_NA, H5I_INVALID_HID, "H5Dcreate");
+        /* Store fourth dataset region */
+        ret = H5Rcreate_region(fid1, "/Dataset2", sid2, H5P_DEFAULT, &wbuf[3]);
+        CHECK(ret, FAIL, "H5Rcreate_region");
 
-    /* Close and release resources for undefined region reference tests */
-    ret = H5Dclose(dset_NA);
-    CHECK(ret, FAIL, "H5Dclose");
-    ret = H5Sclose(space_NA);
-    CHECK(ret, FAIL, "H5Sclose");
+        /* Write selection to disk */
+        ret = H5Dwrite(dset1, H5T_STD_REF, H5S_ALL, H5S_ALL, H5P_DEFAULT, wbuf);
 
-    /* Close disk dataspace */
-    ret = H5Sclose(sid1);
-    CHECK(ret, FAIL, "H5Sclose");
+        /*
+         * Store a dataset region reference which will not get written to disk
+         */
 
-    /* Close Dataset */
-    ret = H5Dclose(dset1);
-    CHECK(ret, FAIL, "H5Dclose");
+        /* Create the dataspace of the region references */
+        space_NA = H5Screate_simple(1, dims_NA, NULL);
+        CHECK(space_NA, H5I_INVALID_HID, "H5Screate_simple");
 
-    /* Close uint8 dataset dataspace */
-    ret = H5Sclose(sid2);
-    CHECK(ret, FAIL, "H5Sclose");
+        /* Create the dataset and write the region references to it */
+        dset_NA = H5Dcreate2(fid1, "DS_NA", H5T_STD_REF, space_NA, H5P_DEFAULT,
+                  H5P_DEFAULT, H5P_DEFAULT);
+        CHECK(dset_NA, H5I_INVALID_HID, "H5Dcreate");
 
-    /* Close file */
-    ret = H5Fclose(fid1);
-    CHECK(ret, FAIL, "H5Fclose");
+        /* Close and release resources for undefined region reference tests */
+        ret = H5Dclose(dset_NA);
+        CHECK(ret, FAIL, "H5Dclose");
+        ret = H5Sclose(space_NA);
+        CHECK(ret, FAIL, "H5Sclose");
 
-    /* Re-open the file */
-    fid1 = H5Fopen(FILE_REF_REG, H5F_ACC_RDWR, fapl);
-    CHECK(fid1, H5I_INVALID_HID, "H5Fopen");
+        /* Close disk dataspace */
+        ret = H5Sclose(sid1);
+        CHECK(ret, FAIL, "H5Sclose");
+
+        /* Close Dataset */
+        ret = H5Dclose(dset1);
+        CHECK(ret, FAIL, "H5Dclose");
 
-    /*
-     * Start the test of an undefined reference
-     */
+        /* Close uint8 dataset dataspace */
+        ret = H5Sclose(sid2);
+        CHECK(ret, FAIL, "H5Sclose");
 
-    /* Open the dataset of the undefined references */
-    dset_NA = H5Dopen2(fid1, "DS_NA", H5P_DEFAULT);
-    CHECK(dset_NA, H5I_INVALID_HID, "H5Dopen2");
+        /* Close file */
+        ret = H5Fclose(fid1);
+        CHECK(ret, FAIL, "H5Fclose");
 
-    /* Read the data */
-    ret = H5Dread(dset_NA, H5T_STD_REF, H5S_ALL, H5S_ALL, H5P_DEFAULT, rdata_NA);
-    CHECK(ret, FAIL, "H5Dread");
+        /* Re-open the file */
+        fid1 = H5Fopen(FILE_REF_REG, H5F_ACC_RDWR, fapl);
+        CHECK(fid1, H5I_INVALID_HID, "H5Fopen");
 
-    /*
-     * Dereference an undefined reference (should fail)
-     */
-    H5E_BEGIN_TRY {
-      dset2 = H5Ropen_object(&rdata_NA[0], H5P_DEFAULT, H5P_DEFAULT);
-    } H5E_END_TRY;
-    VERIFY(dset2, H5I_INVALID_HID, "H5Ropen_object");
+        /*
+         * Start the test of an undefined reference
+         */
 
-    /* Close and release resources. */
-    ret = H5Dclose(dset_NA);
-    CHECK(ret, FAIL, "H5Dclose");
+        /* Open the dataset of the undefined references */
+        dset_NA = H5Dopen2(fid1, "DS_NA", H5P_DEFAULT);
+        CHECK(dset_NA, H5I_INVALID_HID, "H5Dopen2");
 
-    /* This close should fail since H5Ropen_object never created
-     * the id of the referenced object. */
-    H5E_BEGIN_TRY {
-      ret = H5Dclose(dset2);
-    } H5E_END_TRY;
-    VERIFY(ret, FAIL, "H5Dclose");
+        /* Read the data */
+        ret = H5Dread(dset_NA, H5T_STD_REF, H5S_ALL, H5S_ALL, H5P_DEFAULT, rdata_NA);
+        CHECK(ret, FAIL, "H5Dread");
 
-    /*
-     * End the test of an undefined reference
-     */
+        /*
+         * Dereference an undefined reference (should fail)
+         */
+         H5E_BEGIN_TRY {
+            dset2 = H5Ropen_object(&rdata_NA[0], H5P_DEFAULT, H5P_DEFAULT);
+        } H5E_END_TRY;
+        VERIFY(dset2, H5I_INVALID_HID, "H5Ropen_object");
 
-    /* Open the dataset */
-    dset1 = H5Dopen2(fid1, "/Dataset1", H5P_DEFAULT);
-    CHECK(dset1, H5I_INVALID_HID, "H5Dopen2");
+        /* Close and release resources. */
+        ret = H5Dclose(dset_NA);
+        CHECK(ret, FAIL, "H5Dclose");
 
-    /* Read selection from disk */
-    H5E_BEGIN_TRY {
-        ret = H5Dread(dset1, H5T_STD_REF, H5S_ALL, H5S_ALL, H5P_DEFAULT, rbuf);
-    } H5E_END_TRY;
+        /* This close should fail since H5Ropen_object never created
+         * the id of the referenced object. */
+        H5E_BEGIN_TRY {
+            ret = H5Dclose(dset2);
+        } H5E_END_TRY;
+        VERIFY(ret, FAIL, "H5Dclose");
 
-    if(libver_high < H5F_LIBVER_V110)
-        CHECK(ret, FAIL, "H5Dread");
-    else {
+        /*
+         * End the test of an undefined reference
+         */
+
+         /* Open the dataset */
+         dset1 = H5Dopen2(fid1, "/Dataset1", H5P_DEFAULT);
+         CHECK(dset1, H5I_INVALID_HID, "H5Dopen2");
+
+         /* Read selection from disk */
+        ret = H5Dread(dset1, H5T_STD_REF, H5S_ALL, H5S_ALL, H5P_DEFAULT, rbuf);
         CHECK(ret, FAIL, "H5Dread");
 
         /* Try to open objects */
@@ -832,7 +838,10 @@ test_reference_region(H5F_libver_t libver_low, H5F_libver_t libver_high)
         VERIFY(ret, 36, "H5Sget_select_npoints");
         ret = (int)H5Sget_select_hyper_nblocks(sid2);
         VERIFY(ret, 1, "H5Sget_select_hyper_nblocks");
-        coords = (hsize_t *)HDmalloc((size_t)ret * SPACE2_RANK * sizeof(hsize_t) * 2); /* allocate space for the hyperslab blocks */
+
+        /* allocate space for the hyperslab blocks */
+        coords = (hsize_t *)HDmalloc((size_t)ret * SPACE2_RANK * sizeof(hsize_t) * 2); 
+
         ret = H5Sget_select_hyper_blocklist(sid2, (hsize_t)0, (hsize_t)ret, coords);
         CHECK(ret, FAIL, "H5Sget_select_hyper_blocklist");
         VERIFY(coords[0], 2, "Hyperslab Coordinates");
@@ -860,7 +869,10 @@ test_reference_region(H5F_libver_t libver_low, H5F_libver_t libver_high)
         VERIFY(ret, SPACE2_DIM2, "H5Sget_select_npoints");
         ret = (int)H5Sget_select_elem_npoints(sid2);
         VERIFY(ret, SPACE2_DIM2, "H5Sget_select_elem_npoints");
-        coords = (hsize_t *)HDmalloc((size_t)ret * SPACE2_RANK * sizeof(hsize_t)); /* allocate space for the element points */
+
+        /* allocate space for the element points */
+        coords = (hsize_t *)HDmalloc((size_t)ret * SPACE2_RANK * sizeof(hsize_t)); 
+
         ret = H5Sget_select_elem_pointlist(sid2, (hsize_t)0, (hsize_t)ret, coords);
         CHECK(ret, FAIL, "H5Sget_select_elem_pointlist");
         VERIFY(coords[0], coord1[0][0], "Element Coordinates");
@@ -935,35 +947,34 @@ test_reference_region(H5F_libver_t libver_low, H5F_libver_t libver_high)
             } H5E_END_TRY;
             VERIFY(ret, FAIL, "H5Rget_obj_type3");
         } /* end for */
-    }
 
-    /* Close Dataset */
-    ret = H5Dclose(dset1);
-    CHECK(ret, FAIL, "H5Dclose");
+        /* Close Dataset */
+        ret = H5Dclose(dset1);
+        CHECK(ret, FAIL, "H5Dclose");
 
-    /* Close dataset access property list */
-    ret = H5Pclose(dapl_id);
-    CHECK(ret, FAIL, "H5Pclose");
+        /* Close dataset access property list */
+        ret = H5Pclose(dapl_id);
+        CHECK(ret, FAIL, "H5Pclose");
 
-    /* Close file */
-    ret = H5Fclose(fid1);
-    CHECK(ret, FAIL, "H5Fclose");
+        /* Close file */
+        ret = H5Fclose(fid1);
+        CHECK(ret, FAIL, "H5Fclose");
 
-    /* Destroy references */
-    for(j = 0; j < SPACE1_DIM1; j++) {
-        ret = H5Rdestroy(&wbuf[j]);
-        CHECK(ret, FAIL, "H5Rdestroy");
-        if(libver_high >= H5F_LIBVER_V110) {
+        /* Destroy references */
+        for(j = 0; j < SPACE1_DIM1; j++) {
+            ret = H5Rdestroy(&wbuf[j]);
+            CHECK(ret, FAIL, "H5Rdestroy");
             ret = H5Rdestroy(&rbuf[j]);
             CHECK(ret, FAIL, "H5Rdestroy");
         }
-    }
 
-    /* Free memory buffers */
-    HDfree(wbuf);
-    HDfree(rbuf);
-    HDfree(dwbuf);
-    HDfree(drbuf);
+        /* Free memory buffers */
+        HDfree(wbuf);
+        HDfree(rbuf);
+        HDfree(dwbuf);
+        HDfree(drbuf);
+
+    }
 }   /* test_reference_region() */
 
 /****************************************************************
@@ -1054,226 +1065,255 @@ test_reference_region_1D(H5F_libver_t libver_low, H5F_libver_t libver_high)
     CHECK(sid1, H5I_INVALID_HID, "H5Screate_simple");
 
     /* Create a dataset */
-    dset1 = H5Dcreate2(fid1, "Dataset1", H5T_STD_REF, sid1, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
-    CHECK(ret, FAIL, "H5Dcreate2");
+    H5E_BEGIN_TRY {
+        dset1 = H5Dcreate2(fid1, "Dataset1", H5T_STD_REF, sid1, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
+    } H5E_END_TRY;
 
-    /* Create references */
+    if(dset1 < 0) {
 
-    /* Select 15 2x1 hyperslabs for first reference */
-    start[0]  = 2;
-    stride[0] = 5;
-    count[0]  = 15;
-    block[0]  = 2;
-    ret = H5Sselect_hyperslab(sid3, H5S_SELECT_SET, start, stride, count, block);
-    CHECK(ret, FAIL, "H5Sselect_hyperslab");
+        VERIFY(libver_high <= H5F_LIBVER_V110, TRUE, "H5Dcreate2");
 
-    ret = (int)H5Sget_select_npoints(sid3);
-    VERIFY(ret, (block[0] * count[0]), "H5Sget_select_npoints");
+        ret = H5Sclose(sid1);
+        CHECK(ret, FAIL, "H5Sclose");
 
-    /* Store first dataset region */
-    ret = H5Rcreate_region(fid1, "/Dataset2", sid3, H5P_DEFAULT, &wbuf[0]);
-    CHECK(ret, FAIL, "H5Rcreate_region");
-    ret = H5Rget_obj_type3(&wbuf[0], H5P_DEFAULT, &obj_type);
-    CHECK(ret, FAIL, "H5Rget_obj_type3");
-    VERIFY(obj_type, H5O_TYPE_DATASET, "H5Rget_obj_type3");
+        ret = H5Sclose(sid3);
+        CHECK(ret, FAIL, "H5Sclose");
 
-    /* Select sequence of ten points for second reference */
-    coord1[0][0] = 16;
-    coord1[1][0] = 22;
-    coord1[2][0] = 38;
-    coord1[3][0] = 41;
-    coord1[4][0] = 52;
-    coord1[5][0] = 63;
-    coord1[6][0] = 70;
-    coord1[7][0] = 89;
-    coord1[8][0] = 97;
-    coord1[9][0] = 03;
-    ret = H5Sselect_elements(sid3, H5S_SELECT_SET, (size_t)POINT1_NPOINTS, (const hsize_t *)coord1);
-    CHECK(ret, FAIL, "H5Sselect_elements");
+        ret = H5Pclose(fapl);
+        CHECK(ret, FAIL, "H5Pclose");
 
-    ret = (int)H5Sget_select_npoints(sid3);
-    VERIFY(ret, POINT1_NPOINTS, "H5Sget_select_npoints");
+        ret = H5Fclose(fid1);
+        CHECK(ret, FAIL, "H5Fclose");
 
-    /* Store second dataset region */
-    ret = H5Rcreate_region(fid1, "/Dataset2", sid3, H5P_DEFAULT, &wbuf[1]);
-    CHECK(ret, FAIL, "H5Rcreate_region");
+    } else {
 
-    /* Write selection to disk */
-    ret = H5Dwrite(dset1, H5T_STD_REF, H5S_ALL, H5S_ALL, H5P_DEFAULT, wbuf);
-    CHECK(ret, FAIL, "H5Dwrite");
+        CHECK(ret, FAIL, "H5Dcreate2");
 
-    /* Close disk dataspace */
-    ret = H5Sclose(sid1);
-    CHECK(ret, FAIL, "H5Sclose");
+        /* Create references */
 
-    /* Close Dataset */
-    ret = H5Dclose(dset1);
-    CHECK(ret, FAIL, "H5Dclose");
+        /* Select 15 2x1 hyperslabs for first reference */
+        start[0]  = 2;
+        stride[0] = 5;
+        count[0]  = 15;
+        block[0]  = 2;
+        ret = H5Sselect_hyperslab(sid3, H5S_SELECT_SET, start, stride, count, block);
+        CHECK(ret, FAIL, "H5Sselect_hyperslab");
 
-    /* Close uint8 dataset dataspace */
-    ret = H5Sclose(sid3);
-    CHECK(ret, FAIL, "H5Sclose");
+        ret = (int)H5Sget_select_npoints(sid3);
+        VERIFY(ret, (block[0] * count[0]), "H5Sget_select_npoints");
 
-    /* Close file */
-    ret = H5Fclose(fid1);
-    CHECK(ret, FAIL, "H5Fclose");
+        /* Store first dataset region */
+        ret = H5Rcreate_region(fid1, "/Dataset2", sid3, H5P_DEFAULT, &wbuf[0]);
+        CHECK(ret, FAIL, "H5Rcreate_region");
+        ret = H5Rget_obj_type3(&wbuf[0], H5P_DEFAULT, &obj_type);
+        CHECK(ret, FAIL, "H5Rget_obj_type3");
+        VERIFY(obj_type, H5O_TYPE_DATASET, "H5Rget_obj_type3");
 
-    /* Re-open the file */
-    fid1 = H5Fopen(FILE_REF_REG_1D, H5F_ACC_RDWR, fapl);
-    CHECK(fid1, H5I_INVALID_HID, "H5Fopen");
+        /* Select sequence of ten points for second reference */
+        coord1[0][0] = 16;
+        coord1[1][0] = 22;
+        coord1[2][0] = 38;
+        coord1[3][0] = 41;
+        coord1[4][0] = 52;
+        coord1[5][0] = 63;
+        coord1[6][0] = 70;
+        coord1[7][0] = 89;
+        coord1[8][0] = 97;
+        coord1[9][0] = 03;
+        ret = H5Sselect_elements(sid3, H5S_SELECT_SET, (size_t)POINT1_NPOINTS, (const hsize_t *)coord1);
+        CHECK(ret, FAIL, "H5Sselect_elements");
+
+        ret = (int)H5Sget_select_npoints(sid3);
+        VERIFY(ret, POINT1_NPOINTS, "H5Sget_select_npoints");
+
+        /* Store second dataset region */
+        ret = H5Rcreate_region(fid1, "/Dataset2", sid3, H5P_DEFAULT, &wbuf[1]);
+        CHECK(ret, FAIL, "H5Rcreate_region");
 
-    /* Open the dataset */
-    dset1 = H5Dopen2(fid1, "/Dataset1", H5P_DEFAULT);
-    CHECK(dset1, H5I_INVALID_HID, "H5Dopen2");
+        /* Write selection to disk */
+        ret = H5Dwrite(dset1, H5T_STD_REF, H5S_ALL, H5S_ALL, H5P_DEFAULT, wbuf);
+        CHECK(ret, FAIL, "H5Dwrite");
 
-    /* Read selection from disk */
-    ret = H5Dread(dset1, H5T_STD_REF, H5S_ALL, H5S_ALL, H5P_DEFAULT, rbuf);
-    CHECK(ret, FAIL, "H5Dread");
+        /* Close disk dataspace */
+        ret = H5Sclose(sid1);
+        CHECK(ret, FAIL, "H5Sclose");
 
-    /* Try to open objects */
-    dset3 = H5Ropen_object(&rbuf[0], H5P_DEFAULT, dapl_id);
-    CHECK(dset3, H5I_INVALID_HID, "H5Ropen_object");
+        /* Close Dataset */
+        ret = H5Dclose(dset1);
+        CHECK(ret, FAIL, "H5Dclose");
 
-    /* Check what H5Rget_obj_type3 function returns */
-    ret = H5Rget_obj_type3(&rbuf[0], H5P_DEFAULT, &obj_type);
-    CHECK(ret, FAIL, "H5Rget_obj_type3");
-    VERIFY(obj_type, H5O_TYPE_DATASET, "H5Rget_obj_type3");
+        /* Close uint8 dataset dataspace */
+        ret = H5Sclose(sid3);
+        CHECK(ret, FAIL, "H5Sclose");
 
-    /* Check information in referenced dataset */
-    sid1 = H5Dget_space(dset3);
-    CHECK(sid1, H5I_INVALID_HID, "H5Dget_space");
+        /* Close file */
+        ret = H5Fclose(fid1);
+        CHECK(ret, FAIL, "H5Fclose");
 
-    ret = (int)H5Sget_simple_extent_npoints(sid1);
-    VERIFY(ret, SPACE3_DIM1, "H5Sget_simple_extent_npoints");
+        /* Re-open the file */
+        fid1 = H5Fopen(FILE_REF_REG_1D, H5F_ACC_RDWR, fapl);
+        CHECK(fid1, H5I_INVALID_HID, "H5Fopen");
 
-    /* Read from disk */
-    ret = H5Dread(dset3, H5T_STD_U8LE, H5S_ALL, H5S_ALL, H5P_DEFAULT, drbuf);
-    CHECK(ret, FAIL, "H5Dread");
+        /* Open the dataset */
+        dset1 = H5Dopen2(fid1, "/Dataset1", H5P_DEFAULT);
+        CHECK(dset1, H5I_INVALID_HID, "H5Dopen2");
 
-    for(tu8 = (uint8_t *)drbuf, i = 0; i < SPACE3_DIM1; i++, tu8++)
-        VERIFY(*tu8, (uint8_t)(i * 3), "Data");
-
-    /* Get the hyperslab selection */
-    sid3 = H5Ropen_region(&rbuf[0], H5P_DEFAULT, H5P_DEFAULT);
-    CHECK(sid3, H5I_INVALID_HID, "H5Ropen_region");
-
-    /* Verify correct hyperslab selected */
-    ret = (int)H5Sget_select_npoints(sid3);
-    VERIFY(ret, 30, "H5Sget_select_npoints");
-    ret = (int)H5Sget_select_hyper_nblocks(sid3);
-    VERIFY(ret, 15, "H5Sget_select_hyper_nblocks");
-    coords = (hsize_t *)HDmalloc((size_t)ret * SPACE3_RANK * sizeof(hsize_t) * 2); /* allocate space for the hyperslab blocks */
-    ret = H5Sget_select_hyper_blocklist(sid3, (hsize_t)0, (hsize_t)ret, coords);
-    CHECK(ret, FAIL, "H5Sget_select_hyper_blocklist");
-    VERIFY(coords[0],   2, "Hyperslab Coordinates");
-    VERIFY(coords[1],   3, "Hyperslab Coordinates");
-    VERIFY(coords[2],   7, "Hyperslab Coordinates");
-    VERIFY(coords[3],   8, "Hyperslab Coordinates");
-    VERIFY(coords[4],  12, "Hyperslab Coordinates");
-    VERIFY(coords[5],  13, "Hyperslab Coordinates");
-    VERIFY(coords[6],  17, "Hyperslab Coordinates");
-    VERIFY(coords[7],  18, "Hyperslab Coordinates");
-    VERIFY(coords[8],  22, "Hyperslab Coordinates");
-    VERIFY(coords[9],  23, "Hyperslab Coordinates");
-    VERIFY(coords[10], 27, "Hyperslab Coordinates");
-    VERIFY(coords[11], 28, "Hyperslab Coordinates");
-    VERIFY(coords[12], 32, "Hyperslab Coordinates");
-    VERIFY(coords[13], 33, "Hyperslab Coordinates");
-    VERIFY(coords[14], 37, "Hyperslab Coordinates");
-    VERIFY(coords[15], 38, "Hyperslab Coordinates");
-    VERIFY(coords[16], 42, "Hyperslab Coordinates");
-    VERIFY(coords[17], 43, "Hyperslab Coordinates");
-    VERIFY(coords[18], 47, "Hyperslab Coordinates");
-    VERIFY(coords[19], 48, "Hyperslab Coordinates");
-    VERIFY(coords[20], 52, "Hyperslab Coordinates");
-    VERIFY(coords[21], 53, "Hyperslab Coordinates");
-    VERIFY(coords[22], 57, "Hyperslab Coordinates");
-    VERIFY(coords[23], 58, "Hyperslab Coordinates");
-    VERIFY(coords[24], 62, "Hyperslab Coordinates");
-    VERIFY(coords[25], 63, "Hyperslab Coordinates");
-    VERIFY(coords[26], 67, "Hyperslab Coordinates");
-    VERIFY(coords[27], 68, "Hyperslab Coordinates");
-    VERIFY(coords[28], 72, "Hyperslab Coordinates");
-    VERIFY(coords[29], 73, "Hyperslab Coordinates");
-    HDfree(coords);
-    ret = H5Sget_select_bounds(sid3, low, high);
-    CHECK(ret, FAIL, "H5Sget_select_bounds");
-    VERIFY(low[0], 2, "Selection Bounds");
-    VERIFY(high[0], 73, "Selection Bounds");
-
-    /* Close region space */
-    ret = H5Sclose(sid3);
-    CHECK(ret, FAIL, "H5Sclose");
+        /* Read selection from disk */
+        ret = H5Dread(dset1, H5T_STD_REF, H5S_ALL, H5S_ALL, H5P_DEFAULT, rbuf);
+        CHECK(ret, FAIL, "H5Dread");
 
-    /* Get the element selection */
-    sid3 = H5Ropen_region(&rbuf[1], H5P_DEFAULT, H5P_DEFAULT);
-    CHECK(sid3, H5I_INVALID_HID, "H5Ropen_region");
-
-    /* Verify correct elements selected */
-    ret = (int)H5Sget_select_npoints(sid3);
-    VERIFY(ret, 10, "H5Sget_select_npoints");
-    ret = (int)H5Sget_select_elem_npoints(sid3);
-    VERIFY(ret, 10, "H5Sget_select_elem_npoints");
-    coords = (hsize_t *)HDmalloc((size_t)ret * SPACE3_RANK * sizeof(hsize_t)); /* allocate space for the element points */
-    ret = H5Sget_select_elem_pointlist(sid3, (hsize_t)0, (hsize_t)ret, coords);
-    CHECK(ret, FAIL, "H5Sget_select_elem_pointlist");
-    VERIFY(coords[0], coord1[0][0], "Element Coordinates");
-    VERIFY(coords[1], coord1[1][0], "Element Coordinates");
-    VERIFY(coords[2], coord1[2][0], "Element Coordinates");
-    VERIFY(coords[3], coord1[3][0], "Element Coordinates");
-    VERIFY(coords[4], coord1[4][0], "Element Coordinates");
-    VERIFY(coords[5], coord1[5][0], "Element Coordinates");
-    VERIFY(coords[6], coord1[6][0], "Element Coordinates");
-    VERIFY(coords[7], coord1[7][0], "Element Coordinates");
-    VERIFY(coords[8], coord1[8][0], "Element Coordinates");
-    VERIFY(coords[9], coord1[9][0], "Element Coordinates");
-    HDfree(coords);
-    ret = H5Sget_select_bounds(sid3, low, high);
-    CHECK(ret, FAIL, "H5Sget_select_bounds");
-    VERIFY(low[0], 3, "Selection Bounds");
-    VERIFY(high[0], 97, "Selection Bounds");
-
-    /* Close region space */
-    ret = H5Sclose(sid3);
-    CHECK(ret, FAIL, "H5Sclose");
+        /* Try to open objects */
+        dset3 = H5Ropen_object(&rbuf[0], H5P_DEFAULT, dapl_id);
+        CHECK(dset3, H5I_INVALID_HID, "H5Ropen_object");
 
-    /* Close first space */
-    ret = H5Sclose(sid1);
-    CHECK(ret, FAIL, "H5Sclose");
+        /* Check what H5Rget_obj_type3 function returns */
+        ret = H5Rget_obj_type3(&rbuf[0], H5P_DEFAULT, &obj_type);
+        CHECK(ret, FAIL, "H5Rget_obj_type3");
+        VERIFY(obj_type, H5O_TYPE_DATASET, "H5Rget_obj_type3");
 
-    /* Close dereferenced Dataset */
-    ret = H5Dclose(dset3);
-    CHECK(ret, FAIL, "H5Dclose");
+        /* Check information in referenced dataset */
+        sid1 = H5Dget_space(dset3);
+        CHECK(sid1, H5I_INVALID_HID, "H5Dget_space");
 
-    /* Close Dataset */
-    ret = H5Dclose(dset1);
-    CHECK(ret, FAIL, "H5Dclose");
+        ret = (int)H5Sget_simple_extent_npoints(sid1);
+        VERIFY(ret, SPACE3_DIM1, "H5Sget_simple_extent_npoints");
 
-    /* Close dataset access property list */
-    ret = H5Pclose(dapl_id);
-    CHECK(ret, FAIL, "H5Pclose");
+        /* Read from disk */
+        ret = H5Dread(dset3, H5T_STD_U8LE, H5S_ALL, H5S_ALL, H5P_DEFAULT, drbuf);
+        CHECK(ret, FAIL, "H5Dread");
 
-    /* Close file access property list */
-    ret = H5Pclose(fapl);
-    CHECK(ret, FAIL, "H5Pclose");
+        for(tu8 = (uint8_t *)drbuf, i = 0; i < SPACE3_DIM1; i++, tu8++)
+            VERIFY(*tu8, (uint8_t)(i * 3), "Data");
 
-    /* Close file */
-    ret = H5Fclose(fid1);
-    CHECK(ret, FAIL, "H5Fclose");
+        /* Get the hyperslab selection */
+        sid3 = H5Ropen_region(&rbuf[0], H5P_DEFAULT, H5P_DEFAULT);
+        CHECK(sid3, H5I_INVALID_HID, "H5Ropen_region");
 
-    /* Destroy references */
-    for(i = 0; i < 2; i++) {
-        ret = H5Rdestroy(&wbuf[i]);
-        CHECK(ret, FAIL, "H5Rdestroy");
-        ret = H5Rdestroy(&rbuf[i]);
-        CHECK(ret, FAIL, "H5Rdestroy");
-    }
+        /* Verify correct hyperslab selected */
+        ret = (int)H5Sget_select_npoints(sid3);
+        VERIFY(ret, 30, "H5Sget_select_npoints");
+        ret = (int)H5Sget_select_hyper_nblocks(sid3);
+        VERIFY(ret, 15, "H5Sget_select_hyper_nblocks");
 
-    /* Free memory buffers */
-    HDfree(wbuf);
-    HDfree(rbuf);
-    HDfree(dwbuf);
-    HDfree(drbuf);
+        /* allocate space for the hyperslab blocks */
+        coords = (hsize_t *)HDmalloc((size_t)ret * SPACE3_RANK * sizeof(hsize_t) * 2); 
+
+        ret = H5Sget_select_hyper_blocklist(sid3, (hsize_t)0, (hsize_t)ret, coords);
+        CHECK(ret, FAIL, "H5Sget_select_hyper_blocklist");
+        VERIFY(coords[0],   2, "Hyperslab Coordinates");
+        VERIFY(coords[1],   3, "Hyperslab Coordinates");
+        VERIFY(coords[2],   7, "Hyperslab Coordinates");
+        VERIFY(coords[3],   8, "Hyperslab Coordinates");
+        VERIFY(coords[4],  12, "Hyperslab Coordinates");
+        VERIFY(coords[5],  13, "Hyperslab Coordinates");
+        VERIFY(coords[6],  17, "Hyperslab Coordinates");
+        VERIFY(coords[7],  18, "Hyperslab Coordinates");
+        VERIFY(coords[8],  22, "Hyperslab Coordinates");
+        VERIFY(coords[9],  23, "Hyperslab Coordinates");
+        VERIFY(coords[10], 27, "Hyperslab Coordinates");
+        VERIFY(coords[11], 28, "Hyperslab Coordinates");
+        VERIFY(coords[12], 32, "Hyperslab Coordinates");
+        VERIFY(coords[13], 33, "Hyperslab Coordinates");
+        VERIFY(coords[14], 37, "Hyperslab Coordinates");
+        VERIFY(coords[15], 38, "Hyperslab Coordinates");
+        VERIFY(coords[16], 42, "Hyperslab Coordinates");
+        VERIFY(coords[17], 43, "Hyperslab Coordinates");
+        VERIFY(coords[18], 47, "Hyperslab Coordinates");
+        VERIFY(coords[19], 48, "Hyperslab Coordinates");
+        VERIFY(coords[20], 52, "Hyperslab Coordinates");
+        VERIFY(coords[21], 53, "Hyperslab Coordinates");
+        VERIFY(coords[22], 57, "Hyperslab Coordinates");
+        VERIFY(coords[23], 58, "Hyperslab Coordinates");
+        VERIFY(coords[24], 62, "Hyperslab Coordinates");
+        VERIFY(coords[25], 63, "Hyperslab Coordinates");
+        VERIFY(coords[26], 67, "Hyperslab Coordinates");
+        VERIFY(coords[27], 68, "Hyperslab Coordinates");
+        VERIFY(coords[28], 72, "Hyperslab Coordinates");
+        VERIFY(coords[29], 73, "Hyperslab Coordinates");
+        HDfree(coords);
+        ret = H5Sget_select_bounds(sid3, low, high);
+        CHECK(ret, FAIL, "H5Sget_select_bounds");
+        VERIFY(low[0], 2, "Selection Bounds");
+        VERIFY(high[0], 73, "Selection Bounds");
+
+        /* Close region space */
+        ret = H5Sclose(sid3);
+        CHECK(ret, FAIL, "H5Sclose");
+
+        /* Get the element selection */
+        sid3 = H5Ropen_region(&rbuf[1], H5P_DEFAULT, H5P_DEFAULT);
+        CHECK(sid3, H5I_INVALID_HID, "H5Ropen_region");
+
+        /* Verify correct elements selected */
+        ret = (int)H5Sget_select_npoints(sid3);
+        VERIFY(ret, 10, "H5Sget_select_npoints");
+        ret = (int)H5Sget_select_elem_npoints(sid3);
+        VERIFY(ret, 10, "H5Sget_select_elem_npoints");
+
+        /* allocate space for the element points */
+        coords = (hsize_t *)HDmalloc((size_t)ret * SPACE3_RANK * sizeof(hsize_t)); 
+
+        ret = H5Sget_select_elem_pointlist(sid3, (hsize_t)0, (hsize_t)ret, coords);
+        CHECK(ret, FAIL, "H5Sget_select_elem_pointlist");
+        VERIFY(coords[0], coord1[0][0], "Element Coordinates");
+        VERIFY(coords[1], coord1[1][0], "Element Coordinates");
+        VERIFY(coords[2], coord1[2][0], "Element Coordinates");
+        VERIFY(coords[3], coord1[3][0], "Element Coordinates");
+        VERIFY(coords[4], coord1[4][0], "Element Coordinates");
+        VERIFY(coords[5], coord1[5][0], "Element Coordinates");
+        VERIFY(coords[6], coord1[6][0], "Element Coordinates");
+        VERIFY(coords[7], coord1[7][0], "Element Coordinates");
+        VERIFY(coords[8], coord1[8][0], "Element Coordinates");
+        VERIFY(coords[9], coord1[9][0], "Element Coordinates");
+        HDfree(coords);
+        ret = H5Sget_select_bounds(sid3, low, high);
+        CHECK(ret, FAIL, "H5Sget_select_bounds");
+        VERIFY(low[0], 3, "Selection Bounds");
+        VERIFY(high[0], 97, "Selection Bounds");
+
+        /* Close region space */
+        ret = H5Sclose(sid3);
+        CHECK(ret, FAIL, "H5Sclose");
+
+        /* Close first space */
+        ret = H5Sclose(sid1);
+        CHECK(ret, FAIL, "H5Sclose");
+
+        /* Close dereferenced Dataset */
+        ret = H5Dclose(dset3);
+        CHECK(ret, FAIL, "H5Dclose");
+
+        /* Close Dataset */
+        ret = H5Dclose(dset1);
+        CHECK(ret, FAIL, "H5Dclose");
+
+        /* Close dataset access property list */
+        ret = H5Pclose(dapl_id);
+        CHECK(ret, FAIL, "H5Pclose");
+
+        /* Close file access property list */
+        ret = H5Pclose(fapl);
+        CHECK(ret, FAIL, "H5Pclose");
+
+        /* Close file */
+        ret = H5Fclose(fid1);
+        CHECK(ret, FAIL, "H5Fclose");
+
+        /* Destroy references */
+        for(i = 0; i < 2; i++) {
+            ret = H5Rdestroy(&wbuf[i]);
+            CHECK(ret, FAIL, "H5Rdestroy");
+            ret = H5Rdestroy(&rbuf[i]);
+            CHECK(ret, FAIL, "H5Rdestroy");
+        }
+
+        /* Free memory buffers */
+        HDfree(wbuf);
+        HDfree(rbuf);
+        HDfree(dwbuf);
+        HDfree(drbuf);
+
+    }
 }   /* test_reference_region_1D() */
 
 /****************************************************************
@@ -2828,7 +2868,7 @@ test_reference(void)
         for(high = H5F_LIBVER_EARLIEST; high < H5F_LIBVER_NBOUNDS; high++) {
 
             /* Invalid combinations, just continue */
-            if(high <= H5F_LIBVER_V110 || high < low)
+            if(high == H5F_LIBVER_EARLIEST || high < low)
                 continue;
 
             test_reference_region(low, high);       /* Test basic H5R dataset region reference code */