[svn-r27038] Merge of r26393-27031 from the trunk.

Tested on 64-bit linux VM w/ C++ and Fortran 2003

45 files changed, 872 insertions, 291 deletions

diff --git a/c++/examples/CMakeLists.txt b/c++/examples/CMakeLists.txt
index 5ea51a4..ff375f3 100644
--- a/c++/examples/CMakeLists.txt
+++ b/c++/examples/CMakeLists.txt
@@ -35,7 +35,7 @@ set (tutr_examples
 foreach (example ${examples})
   add_executable (cpp_ex_${example} ${HDF5_CPP_EXAMPLES_SOURCE_DIR}/${example}.cpp)
   TARGET_NAMING (cpp_ex_${example} ${LIB_TYPE})
-  TARGET_C_PROPERTIES (cpp_ex_${example} " " " ")
+  TARGET_C_PROPERTIES (cpp_ex_${example} ${LIB_TYPE} " " " ")
   target_link_libraries (cpp_ex_${example} ${HDF5_CPP_LIB_TARGET} ${HDF5_LIB_TARGET})
   set_target_properties (cpp_ex_${example} PROPERTIES FOLDER examples/cpp)
 endforeach (example ${examples})
@@ -43,7 +43,7 @@ endforeach (example ${examples})
 foreach (example ${tutr_examples})
   add_executable (cpp_ex_${example} ${HDF5_CPP_EXAMPLES_SOURCE_DIR}/${example}.cpp)
   TARGET_NAMING (cpp_ex_${example} ${LIB_TYPE})
-  TARGET_C_PROPERTIES (cpp_ex_${example} " " " ")
+  TARGET_C_PROPERTIES (cpp_ex_${example} ${LIB_TYPE} " " " ")
   target_link_libraries (cpp_ex_${example} ${HDF5_CPP_LIB_TARGET} ${HDF5_LIB_TARGET})
   set_target_properties (cpp_ex_${example} PROPERTIES FOLDER examples/cpp)
 endforeach (example ${tutr_examples})
diff --git a/c++/examples/Makefile.am b/c++/examples/Makefile.am
index 5bb8d59..2408217 100644
--- a/c++/examples/Makefile.am
+++ b/c++/examples/Makefile.am
@@ -42,8 +42,8 @@ INSTALL_FILES=create.cpp readdata.cpp writedata.cpp compound.cpp \
 # Some of the examples depend on files created by running other examples
 readdata.chkexe_: create.chkexe_
 chunks.chkexe_: extend_ds.chkexe_
-h5tutr_rdwt.chkexe_: h5tutrcrtdat.chkexe
-h5tutrcrtatt.chkexe_: h5tutrcrtdat.chkexe
+h5tutr_rdwt.chkexe_: h5tutr_crtdat.chkexe
+h5tutrcrtatt.chkexe_: h5tutr_crtdat.chkexe
 h5tutr_crtgrpd.chkexe_: h5tutr_crtgrpar.chkexe
 
 # Tell conclude.am that these are C++ tests.
@@ -52,6 +52,7 @@ CXX_API=yes
 # Where to install examples
 # Note: no '/' after DESTDIR.  Explanation in commence.am
 EXAMPLEDIR=${DESTDIR}$(exec_prefix)/share/hdf5_examples/c++
+EXAMPLETOPDIR=${DESTDIR}$(exec_prefix)/share/hdf5_examples
 
 # How to build programs using h5c++
 $(EXTRA_PROG): $(H5CPP)
diff --git a/c++/examples/run-c++-ex.sh.in b/c++/examples/run-c++-ex.sh.in
index 77ac36a..eae2782 100644
--- a/c++/examples/run-c++-ex.sh.in
+++ b/c++/examples/run-c++-ex.sh.in
@@ -34,7 +34,7 @@ EXIT_FAILURE=1
 
 # Where the tool is installed.
 # default is relative path to installed location of the tools
-prefix="${prefix:-../../../}"
+prefix="${prefix:-@prefix@}"
 AR="@AR@"
 RANLIB="@RANLIB@"
 H5TOOL="h5c++"                  # The tool name
diff --git a/c++/src/CMakeLists.txt b/c++/src/CMakeLists.txt
index 513bbb6..2f3a0c4 100644
--- a/c++/src/CMakeLists.txt
+++ b/c++/src/CMakeLists.txt
@@ -84,7 +84,7 @@ set (CPP_HDRS
 )
 
 add_library (${HDF5_CPP_LIB_TARGET} ${LIB_TYPE} ${CPP_SRCS} ${CPP_HDRS})
-TARGET_C_PROPERTIES (${HDF5_CPP_LIB_TARGET} " " " ")
+TARGET_C_PROPERTIES (${HDF5_CPP_LIB_TARGET} ${LIB_TYPE} " " " ")
 target_link_libraries (${HDF5_CPP_LIB_TARGET} ${HDF5_LIB_TARGET})
 set_global_variable (HDF5_LIBRARIES_TO_EXPORT "${HDF5_LIBRARIES_TO_EXPORT};${HDF5_CPP_LIB_TARGET}")
 H5_SET_LIB_OPTIONS (${HDF5_CPP_LIB_TARGET} ${HDF5_CPP_LIB_NAME} ${LIB_TYPE})
diff --git a/c++/src/H5AbstractDs.cpp b/c++/src/H5AbstractDs.cpp
index e6cacf9..d59c1eb 100644
--- a/c++/src/H5AbstractDs.cpp
+++ b/c++/src/H5AbstractDs.cpp
@@ -21,6 +21,7 @@
 #include "H5PropList.h"
 #include "H5Object.h"
 #include "H5AbstractDs.h"
+#include "H5DataSpace.h"
 #include "H5DcreatProp.h"
 #include "H5CommonFG.h"
 #include "H5Alltypes.h"
@@ -40,6 +41,12 @@ AbstractDs::AbstractDs(){}
 // Function:	AbstractDs default constructor
 ///\brief	Creates an AbstractDs instance using an existing id.
 // Programmer	Binh-Minh Ribler - 2000
+//
+// *** Deprecation warning ***
+// This constructor is no longer appropriate because the data member "id" had
+// been moved to the sub-classes.  It will be removed in 1.10 release.  If its
+// removal does not raise any problems in 1.10, it will be removed from 1.8 in
+// subsequent releases.
 //--------------------------------------------------------------------------
 AbstractDs::AbstractDs(const hid_t ds_id){}
 
@@ -47,8 +54,13 @@ AbstractDs::AbstractDs(const hid_t ds_id){}
 // Function:	AbstractDs copy constructor
 ///\brief	Copy constructor: makes a copy of the original AbstractDs object.
 // Programmer	Binh-Minh Ribler - 2000
+// *** Deprecation warning ***
+// This constructor is no longer appropriate because the data member "id" had
+// been moved to the sub-classes.  It is removed from 1.8.15 because it is
+// a noop and it can be generated by the compiler if needed.
 //--------------------------------------------------------------------------
-AbstractDs::AbstractDs(const AbstractDs& original){}
+//--------------------------------------------------------------------------
+// AbstractDs::AbstractDs(const AbstractDs& original){}
 
 //--------------------------------------------------------------------------
 // Function:	AbstractDs::getTypeClass
@@ -113,8 +125,9 @@ DataType AbstractDs::getDataType() const
    // depending on which object invokes getDataType.  Then, create and
    // return the DataType object
    try {
-      DataType datatype(p_get_type());
-      return(datatype);
+	DataType datatype;
+	f_DataType_setId(&datatype, p_get_type());
+	return(datatype);
    }
    catch (DataSetIException E) {
       throw DataTypeIException("DataSet::getDataType", E.getDetailMsg());
@@ -139,8 +152,9 @@ ArrayType AbstractDs::getArrayType() const
    // depending on which object invokes getArrayType.  Then, create and
    // return the ArrayType object
    try {
-      ArrayType arraytype(p_get_type());
-      return(arraytype);
+	ArrayType arraytype;
+	f_DataType_setId(&arraytype, p_get_type());
+	return(arraytype);
    }
    catch (DataSetIException E) {
       throw DataTypeIException("DataSet::getArrayType", E.getDetailMsg());
@@ -165,8 +179,9 @@ CompType AbstractDs::getCompType() const
    // depending on which object invokes getCompType.  Then, create and
    // return the CompType object
    try {
-      CompType comptype(p_get_type());
-      return(comptype);
+	CompType comptype;
+	f_DataType_setId(&comptype, p_get_type());
+	return(comptype);
    }
    catch (DataSetIException E) {
       throw DataTypeIException("DataSet::getCompType", E.getDetailMsg());
@@ -191,8 +206,9 @@ EnumType AbstractDs::getEnumType() const
    // depending on which object invokes getEnumType.  Then, create and
    // return the EnumType object
    try {
-      EnumType enumtype(p_get_type());
-      return(enumtype);
+	EnumType enumtype;
+	f_DataType_setId(&enumtype, p_get_type());
+	return(enumtype);
    }
    catch (DataSetIException E) {
       throw DataTypeIException("DataSet::getEnumType", E.getDetailMsg());
@@ -217,8 +233,9 @@ IntType AbstractDs::getIntType() const
    // depending on which object invokes getIntType.  Then, create and
    // return the IntType object
    try {
-      IntType inttype(p_get_type());
-      return(inttype);
+	IntType inttype;
+	f_DataType_setId(&inttype, p_get_type());
+	return(inttype);
    }
    catch (DataSetIException E) {
       throw DataTypeIException("DataSet::getIntType", E.getDetailMsg());
@@ -243,8 +260,9 @@ FloatType AbstractDs::getFloatType() const
    // depending on which object invokes getFloatType.  Then, create and
    // return the FloatType object
    try {
-      FloatType floatype(p_get_type());
-      return(floatype);
+	FloatType floatype;
+	f_DataType_setId(&floatype, p_get_type());
+	return(floatype);
    }
    catch (DataSetIException E) {
       throw DataTypeIException("DataSet::getFloatType", E.getDetailMsg());
@@ -269,8 +287,9 @@ StrType AbstractDs::getStrType() const
    // depending on which object invokes getStrType.  Then, create and
    // return the StrType object
    try {
-      StrType strtype(p_get_type());
-      return(strtype);
+	StrType strtype;
+	f_DataType_setId(&strtype, p_get_type());
+	return(strtype);
    }
    catch (DataSetIException E) {
       throw DataTypeIException("DataSet::getStrType", E.getDetailMsg());
@@ -295,8 +314,9 @@ VarLenType AbstractDs::getVarLenType() const
    // depending on which object invokes getVarLenType.  Then, create and
    // return the VarLenType object
    try {
-      VarLenType varlentype(p_get_type());
-      return(varlentype);
+	VarLenType varlentype;
+	f_DataType_setId(&varlentype, p_get_type());
+	return(varlentype);
    }
    catch (DataSetIException E) {
       throw DataTypeIException("DataSet::getVarLenType", E.getDetailMsg());
diff --git a/c++/src/H5AbstractDs.h b/c++/src/H5AbstractDs.h
index 01d05b8..810dc8b 100644
--- a/c++/src/H5AbstractDs.h
+++ b/c++/src/H5AbstractDs.h
@@ -28,6 +28,7 @@ class FloatType;
 class IntType;
 class StrType;
 class VarLenType;
+class DataSpace;
 
 /*! \class AbstractDs
     \brief AbstractDs is an abstract base class, inherited by Attribute
@@ -70,9 +71,6 @@ class H5_DLLCPP AbstractDs {
 	///\brief Returns this class name.
 	virtual H5std_string fromClass() const = 0;
 
-	// Copy constructor
-	AbstractDs( const AbstractDs& original );
-
 	// Destructor
 	virtual ~AbstractDs();
 
@@ -80,8 +78,17 @@ class H5_DLLCPP AbstractDs {
 	// Default constructor
 	AbstractDs();
 
-	// Constructor that takes an attribute id or a dataset id.
-	AbstractDs( const hid_t ds_id );
+        // *** Deprecation warning ***
+        // The following two constructors are no longer appropriate after the
+        // data member "id" had been moved to the sub-classes.
+        // The copy constructor is a noop and is removed in 1.8.15 and the
+        // other will be removed from 1.10 release, and then from 1.8 if its
+        // removal does not raise any problems in two 1.10 releases.
+
+	AbstractDs(const hid_t h5_id);
+
+	// Copy constructor
+	// AbstractDs( const AbstractDs& original );
 
    private:
 	// This member function is implemented by DataSet and Attribute.
diff --git a/c++/src/H5ArrayType.h b/c++/src/H5ArrayType.h
index 511126e..6577a6e 100644
--- a/c++/src/H5ArrayType.h
+++ b/c++/src/H5ArrayType.h
@@ -49,7 +49,6 @@ class H5_DLLCPP ArrayType : public DataType {
 	// Noop destructor
 	virtual ~ArrayType();
 
-   protected:
 	// Default constructor
 	ArrayType();
 
diff --git a/c++/src/H5Attribute.cpp b/c++/src/H5Attribute.cpp
index a9e928d..0bfdff8 100644
--- a/c++/src/H5Attribute.cpp
+++ b/c++/src/H5Attribute.cpp
@@ -74,7 +74,8 @@ Attribute::Attribute(const Attribute& original) : AbstractDs(), IdComponent()
 //--------------------------------------------------------------------------
 Attribute::Attribute(const hid_t existing_id) : AbstractDs(), IdComponent()
 {
-   id = existing_id;
+    id = existing_id;
+    incRefCount(); // increment number of references to this id
 }
 
 //--------------------------------------------------------------------------
@@ -270,8 +271,9 @@ DataSpace Attribute::getSpace() const
    // If the dataspace id is valid, create and return the DataSpace object
    if( dataspace_id > 0 )
    {
-      DataSpace dataspace( dataspace_id );
-      return( dataspace );
+	DataSpace dataspace;
+	f_DataSpace_setId(&dataspace, dataspace_id);
+	return(dataspace);
    }
    else
    {
@@ -392,10 +394,12 @@ H5std_string Attribute::getName() const
 //--------------------------------------------------------------------------
 H5std_string Attribute::getName(size_t len) const
 {
-   H5std_string attr_name;
-   ssize_t name_size = getName(attr_name, len);
-   return(attr_name);
-   // let caller catch exception if any
+    H5std_string attr_name;
+    ssize_t name_size = getName(attr_name, len);
+    if (name_size < 0)
+	return("");
+    else
+	return(attr_name);
 }
 
 //--------------------------------------------------------------------------
diff --git a/c++/src/H5Attribute.h b/c++/src/H5Attribute.h
index f57b922..eced64e 100644
--- a/c++/src/H5Attribute.h
+++ b/c++/src/H5Attribute.h
@@ -31,6 +31,16 @@ namespace H5 {
 */
 class H5_DLLCPP Attribute : public AbstractDs, public IdComponent {
    public:
+
+	// Copy constructor: makes a copy of an existing Attribute object.
+	Attribute( const Attribute& original );
+
+	// Default constructor
+	Attribute();
+
+	// Creates a copy of an existing attribute using the attribute id
+	Attribute( const hid_t attr_id );
+
 	// Closes this attribute.
 	virtual void close();
 
@@ -70,15 +80,6 @@ class H5_DLLCPP Attribute : public AbstractDs, public IdComponent {
 	///\brief Returns this class name.
 	virtual H5std_string fromClass () const { return("Attribute"); }
 
-	// Creates a copy of an existing attribute using the attribute id
-	Attribute( const hid_t attr_id );
-
-	// Copy constructor: makes a copy of an existing Attribute object.
-	Attribute( const Attribute& original );
-
-	// Default constructor
-	Attribute();
-
 	// Gets the attribute id.
 	virtual hid_t getId() const;
 
@@ -109,6 +110,10 @@ class H5_DLLCPP Attribute : public AbstractDs, public IdComponent {
 
 	// do not inherit H5Object::renameAttr
 	void renameAttr() {}
+
+	// Friend function to set Attribute id.  For library use only.
+	friend void f_Attribute_setId(Attribute* attr, hid_t new_id);
+
 };
 #ifndef H5_NO_NAMESPACE
 }
diff --git a/c++/src/H5CommonFG.cpp b/c++/src/H5CommonFG.cpp
index 3aa0386..dbe26b4 100644
--- a/c++/src/H5CommonFG.cpp
+++ b/c++/src/H5CommonFG.cpp
@@ -14,6 +14,7 @@
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
 #include <string>
+#include <iostream>
 
 #include "H5Include.h"
 #include "H5Exception.h"
@@ -33,9 +34,6 @@
 #include "H5Alltypes.h"
 #include "H5private.h"		// for HDstrcpy
 
-#include <iostream>
-using namespace std;
-
 // There are a few comments that are common to most of the functions
 // defined in this file so they are listed here.
 // - getLocId is called by all functions, that call a C API, to get
@@ -51,6 +49,7 @@ using namespace std;
 
 #ifndef H5_NO_NAMESPACE
 namespace H5 {
+using namespace std;
 #endif
 
 //--------------------------------------------------------------------------
@@ -100,7 +99,9 @@ Group CommonFG::createGroup( const char* name, size_t size_hint ) const
       throwException("createGroup", "H5Gcreate2 failed");
 
    // No failure, create and return the Group object
-   Group group( group_id );
+   Group group;
+    CommonFG *ptr = &group;
+    ptr->p_setId(group_id);
    return( group );
 }
 
@@ -136,7 +137,9 @@ Group CommonFG::openGroup( const char* name ) const
       throwException("openGroup", "H5Gopen2 failed");
 
    // No failure, create and return the Group object
-   Group group( group_id );
+   Group group;
+    CommonFG *ptr = &group;
+    ptr->p_setId(group_id);
    return( group );
 }
 
@@ -178,7 +181,8 @@ DataSet CommonFG::createDataSet( const char* name, const DataType& data_type, co
       throwException("createDataSet", "H5Dcreate2 failed");
 
    // No failure, create and return the DataSet object
-   DataSet dataset( dataset_id );
+   DataSet dataset;
+   f_DataSet_setId(&dataset, dataset_id);
    return( dataset );
 }
 
@@ -213,7 +217,8 @@ DataSet CommonFG::openDataSet( const char* name ) const
       throwException("openDataSet", "H5Dopen2 failed");
 
    // No failure, create and return the DataSet object
-   DataSet dataset( dataset_id );
+   DataSet dataset;
+   f_DataSet_setId(&dataset, dataset_id);
    return( dataset );
 }
 
@@ -576,7 +581,8 @@ DataType CommonFG::openDataType( const char* name ) const
       throwException("openDataType", "H5Topen2 failed");
 
    // No failure, create and return the DataType object
-   DataType data_type(type_id);
+   DataType data_type;
+   f_DataType_setId(&data_type, type_id);
    return(data_type);
 }
 
@@ -611,7 +617,8 @@ ArrayType CommonFG::openArrayType( const char* name ) const
       throwException("openArrayType", "H5Topen2 failed");
 
    // No failure, create and return the ArrayType object
-   ArrayType array_type (type_id);
+   ArrayType array_type;
+   f_DataType_setId(&array_type, type_id);
    return(array_type);
 }
 
@@ -646,7 +653,8 @@ CompType CommonFG::openCompType( const char* name ) const
       throwException("openCompType", "H5Topen2 failed");
 
    // No failure, create and return the CompType object
-   CompType comp_type(type_id);
+   CompType comp_type;
+   f_DataType_setId(&comp_type, type_id);
    return(comp_type);
 }
 
@@ -681,7 +689,8 @@ EnumType CommonFG::openEnumType( const char* name ) const
       throwException("openEnumType", "H5Topen2 failed");
 
    // No failure, create and return the EnumType object
-   EnumType enum_type(type_id);
+   EnumType enum_type;
+   f_DataType_setId(&enum_type, type_id);
    return(enum_type);
 }
 
@@ -716,7 +725,8 @@ IntType CommonFG::openIntType( const char* name ) const
       throwException("openIntType", "H5Topen2 failed");
 
    // No failure, create and return the IntType object
-   IntType int_type(type_id);
+   IntType int_type;
+   f_DataType_setId(&int_type, type_id);
    return(int_type);
 }
 
@@ -751,7 +761,8 @@ FloatType CommonFG::openFloatType( const char* name ) const
       throwException("openFloatType", "H5Topen2 failed");
 
    // No failure, create and return the FloatType object
-   FloatType float_type(type_id);
+   FloatType float_type;
+   f_DataType_setId(&float_type, type_id);
    return(float_type);
 }
 
@@ -786,7 +797,8 @@ StrType CommonFG::openStrType( const char* name ) const
       throwException("openStrType", "H5Topen2 failed");
 
    // No failure, create and return the StrType object
-   StrType str_type(type_id);
+   StrType str_type;
+   f_DataType_setId(&str_type, type_id);
    return(str_type);
 }
 
@@ -821,7 +833,8 @@ VarLenType CommonFG::openVarLenType( const char* name ) const
       throwException("openVarLenType", "H5Topen2 failed");
 
    // No failure, create and return the VarLenType object
-   VarLenType varlen_type(type_id);
+   VarLenType varlen_type;
+   f_DataType_setId(&varlen_type, type_id);
    return(varlen_type);
 }
 
@@ -1100,6 +1113,58 @@ H5O_type_t CommonFG::childObjType(hsize_t index, H5_index_t index_type, H5_iter_
     return(objtype);
 }
 
+//--------------------------------------------------------------------------
+// Function:	CommonFG::childObjVersion
+///\brief	Returns the object header version of an object in this file/group,
+///		given the object's name.
+///\param	objname - IN: Name of the object
+///\return	Object version, which can have the following values:
+///		\li \c H5O_VERSION_1
+///		\li \c H5O_VERSION_2
+///\exception	H5::FileIException or H5::GroupIException
+///		Exception will be thrown when:
+///		- an error returned by the C API
+///		- version number is not one of the valid values above
+// Programmer	Binh-Minh Ribler - April, 2014
+//--------------------------------------------------------------------------
+unsigned CommonFG::childObjVersion(const char* objname) const
+{
+    H5O_info_t objinfo;
+    unsigned version = 0;
+
+    // Use C API to get information of the object
+    herr_t ret_value = H5Oget_info_by_name(getLocId(), objname, &objinfo, H5P_DEFAULT);
+
+    // Throw exception if C API returns failure
+    if (ret_value < 0)
+	throwException("childObjVersion", "H5Oget_info_by_name failed");
+    // Return a valid version or throw an exception for invalid value
+    else
+    {
+	version = objinfo.hdr.version;
+	if (version != H5O_VERSION_1 && version != H5O_VERSION_2)
+	    throwException("childObjVersion", "Invalid version for object");
+    }
+    return(version);
+}
+
+//--------------------------------------------------------------------------
+// Function:	CommonFG::childObjVersion
+///\brief	This is an overloaded member function, provided for convenience.
+///		It takes an \a H5std_string for the object's name.
+///\brief	Returns the type of an object in this group, given the
+///		object's name.
+///\param	objname - IN: Name of the object (H5std_string&)
+///\exception	H5::FileIException or H5::GroupIException
+// Programmer	Binh-Minh Ribler - April, 2014
+//--------------------------------------------------------------------------
+unsigned CommonFG::childObjVersion(const H5std_string& objname) const
+{
+    // Use overloaded function
+    unsigned version = childObjVersion(objname.c_str());
+    return(version);
+}
+
 #ifndef H5_NO_DEPRECATED_SYMBOLS
 #ifndef DOXYGEN_SHOULD_SKIP_THIS
 //--------------------------------------------------------------------------
@@ -1172,6 +1237,7 @@ H5G_obj_t CommonFG::getObjTypeByIdx(hsize_t idx, H5std_string& type_name) const
    }
    return (obj_type);
 }
+
 #endif // DOXYGEN_SHOULD_SKIP_THIS
 #endif /* H5_NO_DEPRECATED_SYMBOLS */
 
@@ -1189,6 +1255,37 @@ CommonFG::CommonFG() {}
 // Programmer	Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
 CommonFG::~CommonFG() {}
+
+//--------------------------------------------------------------------------
+// Function:	f_DataType_setId - friend
+// Purpose:	This function is friend to class H5::DataType so that it
+//		can set DataType::id in order to work around a problem
+//		described in the JIRA issue HDFFV-7947.
+//		Applications shouldn't need to use it.
+// param        dtype   - IN/OUT: DataType object to be changed
+// param        new_id - IN: New id to set
+// Programmer	Binh-Minh Ribler - 2015
+//--------------------------------------------------------------------------
+void f_DataType_setId(DataType* dtype, hid_t new_id)
+{
+    dtype->id = new_id;
+}
+
+//--------------------------------------------------------------------------
+// Function:	f_DataSet_setId - friend
+// Purpose:	This function is friend to class H5::DataSet so that it
+//		can set DataSet::id in order to work around a problem
+//		described in the JIRA issue HDFFV-7947.
+//		Applications shouldn't need to use it.
+// param        dset   - IN/OUT: DataSet object to be changed
+// param        new_id - IN: New id to set
+// Programmer	Binh-Minh Ribler - 2015
+//--------------------------------------------------------------------------
+void f_DataSet_setId(DataSet* dset, hid_t new_id)
+{
+    dset->id = new_id;
+}
+
 #endif // DOXYGEN_SHOULD_SKIP_THIS
 
 #ifndef H5_NO_NAMESPACE
diff --git a/c++/src/H5CommonFG.h b/c++/src/H5CommonFG.h
index 5c8a142..d36d78c 100644
--- a/c++/src/H5CommonFG.h
+++ b/c++/src/H5CommonFG.h
@@ -21,6 +21,7 @@
 namespace H5 {
 #endif
 
+// Class forwarding
 class Group;
 class H5File;
 class ArrayType;
@@ -70,6 +71,11 @@ class H5_DLLCPP CommonFG {
 	H5O_type_t childObjType(const char* objname) const;
 	H5O_type_t childObjType(hsize_t index, H5_index_t index_type=H5_INDEX_NAME, H5_iter_order_t order=H5_ITER_INC, const char* objname=".") const;
 
+	// Returns the object header version of an object in this file or group,
+	// given the object's name.
+	unsigned childObjVersion(const char* objname) const;
+	unsigned childObjVersion(const H5std_string& objname) const;
+
 #ifndef H5_NO_DEPRECATED_SYMBOLS
 	// Returns the type of an object in this group, given the
 	// object's index.
@@ -159,6 +165,10 @@ class H5_DLLCPP CommonFG {
 
 	// Noop destructor.
 	virtual ~CommonFG();
+
+    protected:
+	virtual void p_setId(const hid_t new_id) = 0;
+
 #endif // DOXYGEN_SHOULD_SKIP_THIS
 
 }; // end of CommonFG declaration
diff --git a/c++/src/H5CompType.cpp b/c++/src/H5CompType.cpp
index 191f004..393aafc 100644
--- a/c++/src/H5CompType.cpp
+++ b/c++/src/H5CompType.cpp
@@ -227,7 +227,8 @@ hid_t CompType::p_get_member_type(unsigned member_num) const
 DataType CompType::getMemberDataType( unsigned member_num ) const
 {
    try {
-      DataType datatype(p_get_member_type(member_num));
+      DataType datatype;
+	f_DataType_setId(&datatype, p_get_member_type(member_num));
       return(datatype);
    }
    catch (DataTypeIException E) {
@@ -248,6 +249,7 @@ ArrayType CompType::getMemberArrayType( unsigned member_num ) const
 {
    try {
       ArrayType arraytype(p_get_member_type(member_num));
+	f_DataType_setId(&arraytype, p_get_member_type(member_num));
       return(arraytype);
    }
    catch (DataTypeIException E) {
@@ -268,6 +270,7 @@ CompType CompType::getMemberCompType( unsigned member_num ) const
 {
    try {
       CompType comptype(p_get_member_type(member_num));
+	f_DataType_setId(&comptype, p_get_member_type(member_num));
       return(comptype);
    }
    catch (DataTypeIException E) {
@@ -288,6 +291,7 @@ EnumType CompType::getMemberEnumType( unsigned member_num ) const
 {
    try {
       EnumType enumtype(p_get_member_type(member_num));
+	f_DataType_setId(&enumtype, p_get_member_type(member_num));
       return(enumtype);
    }
    catch (DataTypeIException E) {
@@ -308,6 +312,7 @@ IntType CompType::getMemberIntType( unsigned member_num ) const
 {
    try {
       IntType inttype(p_get_member_type(member_num));
+	f_DataType_setId(&inttype, p_get_member_type(member_num));
       return(inttype);
    }
    catch (DataTypeIException E) {
@@ -328,6 +333,7 @@ FloatType CompType::getMemberFloatType( unsigned member_num ) const
 {
    try {
       FloatType floatype(p_get_member_type(member_num));
+	f_DataType_setId(&floatype, p_get_member_type(member_num));
       return(floatype);
    }
    catch (DataTypeIException E) {
@@ -348,6 +354,7 @@ StrType CompType::getMemberStrType( unsigned member_num ) const
 {
    try {
       StrType strtype(p_get_member_type(member_num));
+	f_DataType_setId(&strtype, p_get_member_type(member_num));
       return(strtype);
    }
    catch (DataTypeIException E) {
@@ -368,6 +375,7 @@ VarLenType CompType::getMemberVarLenType( unsigned member_num ) const
 {
    try {
       VarLenType varlentype(p_get_member_type(member_num));
+	f_DataType_setId(&varlentype, p_get_member_type(member_num));
       return(varlentype);
    }
    catch (DataTypeIException E) {
diff --git a/c++/src/H5DataSet.cpp b/c++/src/H5DataSet.cpp
index 6728264..717ef88 100644
--- a/c++/src/H5DataSet.cpp
+++ b/c++/src/H5DataSet.cpp
@@ -52,7 +52,7 @@ namespace H5 {
 ///\brief	Default constructor: creates a stub DataSet.
 // Programmer	Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
-DataSet::DataSet() : AbstractDs(), H5Object(), id(H5I_INVALID_HID) {}
+DataSet::DataSet() : H5Object(), AbstractDs(), id(H5I_INVALID_HID) {}
 
 //--------------------------------------------------------------------------
 // Function:	DataSet overloaded constructor
@@ -60,9 +60,10 @@ DataSet::DataSet() : AbstractDs(), H5Object(), id(H5I_INVALID_HID) {}
 ///\param	existing_id - IN: Id of an existing dataset
 // Programmer	Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
-DataSet::DataSet(const hid_t existing_id) : AbstractDs(), H5Object()
+DataSet::DataSet(const hid_t existing_id) : H5Object(), AbstractDs()
 {
     id = existing_id;
+    incRefCount(); // increment number of references to this id
 }
 
 //--------------------------------------------------------------------------
@@ -71,7 +72,7 @@ DataSet::DataSet(const hid_t existing_id) : AbstractDs(), H5Object()
 ///\param	original - IN: DataSet instance to copy
 // Programmer	Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
-DataSet::DataSet(const DataSet& original) : AbstractDs(original), H5Object(original)
+DataSet::DataSet(const DataSet& original) : H5Object(), AbstractDs()
 {
     id = original.getId();
     incRefCount(); // increment number of references to this id
@@ -95,7 +96,7 @@ DataSet::DataSet(const DataSet& original) : AbstractDs(original), H5Object(origi
 //	Jul, 2008
 //		Added for application convenience.
 //--------------------------------------------------------------------------
-DataSet::DataSet(const H5Location& loc, const void* ref, H5R_type_t ref_type, const PropList& plist) : AbstractDs(), H5Object(), id(H5I_INVALID_HID)
+DataSet::DataSet(const H5Location& loc, const void* ref, H5R_type_t ref_type, const PropList& plist) : H5Object(), AbstractDs(), id(H5I_INVALID_HID)
 {
     id = H5Location::p_dereference(loc.getId(), ref, ref_type, plist, "constructor - by dereferenced");
 }
@@ -114,7 +115,7 @@ DataSet::DataSet(const H5Location& loc, const void* ref, H5R_type_t ref_type, co
 //	Jul, 2008
 //		Added for application convenience.
 //--------------------------------------------------------------------------
-DataSet::DataSet(const Attribute& attr, const void* ref, H5R_type_t ref_type, const PropList& plist) : AbstractDs(), H5Object(), id(H5I_INVALID_HID)
+DataSet::DataSet(const Attribute& attr, const void* ref, H5R_type_t ref_type, const PropList& plist) : H5Object(), AbstractDs(), id(H5I_INVALID_HID)
 {
     id = H5Location::p_dereference(attr.getId(), ref, ref_type, plist, "constructor - by dereference");
 }
@@ -137,7 +138,8 @@ DataSpace DataSet::getSpace() const
       throw DataSetIException("DataSet::getSpace", "H5Dget_space failed");
    }
    //create dataspace object using the existing id then return the object
-   DataSpace data_space( dataspace_id );
+   DataSpace data_space;
+   f_DataSpace_setId(&data_space, dataspace_id);
    return( data_space );
 }
 
@@ -170,8 +172,8 @@ DSetCreatPropList DataSet::getCreatePlist() const
       throw DataSetIException("DataSet::getCreatePlist", "H5Dget_create_plist failed");
    }
    // create and return the DSetCreatPropList object
-   DSetCreatPropList create_plist( create_plist_id );
-   return( create_plist );
+   DSetCreatPropList create_plist(create_plist_id); // ok to use existing id const
+   return(create_plist);
 }
 
 //--------------------------------------------------------------------------
diff --git a/c++/src/H5DataSet.h b/c++/src/H5DataSet.h
index 529466a..b2544a2 100644
--- a/c++/src/H5DataSet.h
+++ b/c++/src/H5DataSet.h
@@ -30,6 +30,7 @@ namespace H5 {
 */
 class H5_DLLCPP DataSet : public H5Object, public AbstractDs {
    public:
+
 	// Close this dataset.
 	virtual void close();
 
@@ -125,6 +126,10 @@ class H5_DLLCPP DataSet : public H5Object, public AbstractDs {
 	// Reads variable or fixed len strings from this dataset.
 	void p_read_fixed_len(const hid_t mem_type_id, const hid_t mem_space_id, const hid_t file_space_id, const hid_t xfer_plist_id, H5std_string& strg) const;
 	void p_read_variable_len(const hid_t mem_type_id, const hid_t mem_space_id, const hid_t file_space_id, const hid_t xfer_plist_id, H5std_string& strg) const;
+
+	// Friend function to set DataSet id.  For library use only.
+	friend void f_DataSet_setId(DataSet* dset, hid_t new_id);
+
 };
 #ifndef H5_NO_NAMESPACE
 }
diff --git a/c++/src/H5DataSpace.cpp b/c++/src/H5DataSpace.cpp
index 20b4e5e..d9c262d 100644
--- a/c++/src/H5DataSpace.cpp
+++ b/c++/src/H5DataSpace.cpp
@@ -85,6 +85,7 @@ DataSpace::DataSpace( int rank, const hsize_t * dims, const hsize_t * maxdims) :
 DataSpace::DataSpace(const hid_t existing_id) : IdComponent()
 {
     id = existing_id;
+    incRefCount(); // increment number of references to this id
 }
 
 //--------------------------------------------------------------------------
@@ -93,7 +94,7 @@ DataSpace::DataSpace(const hid_t existing_id) : IdComponent()
 ///\param	original - IN: DataSpace object to copy
 // Programmer	Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
-DataSpace::DataSpace(const DataSpace& original) : IdComponent(original)
+DataSpace::DataSpace(const DataSpace& original) : IdComponent()
 {
     id = original.getId();
     incRefCount(); // increment number of references to this id
diff --git a/c++/src/H5DataSpace.h b/c++/src/H5DataSpace.h
index b007fd0..a43cecd 100644
--- a/c++/src/H5DataSpace.h
+++ b/c++/src/H5DataSpace.h
@@ -129,6 +129,9 @@ class H5_DLLCPP DataSpace : public IdComponent {
 
    private:
 	hid_t id;       // HDF5 dataspace id
+
+	// Friend function to set DataSpace id.  For library use only.
+	friend void f_DataSpace_setId(DataSpace *dspace, hid_t new_id);
 };
 #ifndef H5_NO_NAMESPACE
 }
diff --git a/c++/src/H5DataType.cpp b/c++/src/H5DataType.cpp
index a435b4e..cdcd1e6 100644
--- a/c++/src/H5DataType.cpp
+++ b/c++/src/H5DataType.cpp
@@ -71,6 +71,7 @@ DataType::DataType() : H5Object(), id(H5I_INVALID_HID) {}
 DataType::DataType(const hid_t existing_id) : H5Object()
 {
     id = existing_id;
+    incRefCount(); // increment number of references to this id
 }
 
 //--------------------------------------------------------------------------
@@ -105,7 +106,7 @@ DataType::DataType( const H5T_class_t type_class, size_t size ) : H5Object()
 //	Jul, 2008
 //		Added for application convenience.
 //--------------------------------------------------------------------------
-DataType::DataType(const H5Location& loc, const void* ref, H5R_type_t ref_type, const PropList& plist) : H5Object(), id(H5I_INVALID_HID)
+DataType::DataType(const H5Location& loc, const void* ref, H5R_type_t ref_type, const PropList& plist) : H5Object()
 {
     id = H5Location::p_dereference(loc.getId(), ref, ref_type, plist, "constructor - by dereference");
 }
@@ -134,13 +135,34 @@ DataType::DataType(const Attribute& attr, const void* ref, H5R_type_t ref_type,
 ///\brief	Copy constructor: makes a copy of the original DataType object.
 // Programmer	Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
-DataType::DataType(const DataType& original) : H5Object(original)
+DataType::DataType(const DataType& original) : H5Object()
 {
     id = original.getId();
     incRefCount(); // increment number of references to this id
 }
 
 //--------------------------------------------------------------------------
+// Function:    DataType overloaded constructor
+///\brief       Creates a integer type using a predefined type
+///\param       pred_type - IN: Predefined datatype
+///\exception   H5::DataTypeIException
+// Programmer   Binh-Minh Ribler - 2000
+// Description
+//		Copying the type so that when a predefined type is passed in,
+//		a copy of it is made, not just a duplicate of the HDF5 id.
+//		Note: calling DataType::copy will invoke DataType::close()
+//		unnecessarily and will produce undefined behavior.
+//		-BMR, Apr 2015
+//--------------------------------------------------------------------------
+DataType::DataType(const PredType& pred_type) : H5Object()
+{
+    // call C routine to copy the datatype
+    id = H5Tcopy( pred_type.getId() );
+    if (id < 0)
+	throw DataTypeIException("DataType constructor", "H5Tcopy failed");
+}
+
+//--------------------------------------------------------------------------
 // Function:	DataType::copy
 ///\brief	Copies an existing datatype to this datatype object
 ///\param	like_type - IN: Datatype to be copied
@@ -203,11 +225,22 @@ void DataType::copy(const DataSet& dset)
 // 		Makes a copy of the type on the right hand side and stores
 //		the new id in the left hand side object.
 // Programmer	Binh-Minh Ribler - 2000
+// Modification
+//		Changed operator= to simply copy the id of rhs instead of
+//		calling H5Tcopy because, when the operator= is invoked, a
+//		different datatype id is created and it won't have the same
+//		characteristics as the original one, specifically, if the
+//		rhs represents a named datatype, "this" would still be a
+//		transient datatype.
+//		BMR - Mar, 2015
 //--------------------------------------------------------------------------
 DataType& DataType::operator=( const DataType& rhs )
 {
     if (this != &rhs)
-	copy(rhs);
+    {
+	id = rhs.id;
+	incRefCount(); // increment number of references to this id
+    }
     return(*this);
 }
 
@@ -463,8 +496,9 @@ DataType DataType::getSuper() const
    // the base type, otherwise, raise exception
    if( base_type_id > 0 )
    {
-      DataType base_type( base_type_id );
-      return( base_type );
+	DataType base_type;
+	base_type.p_setId(base_type_id);
+	return(base_type);
    }
    else
    {
diff --git a/c++/src/H5DataType.h b/c++/src/H5DataType.h
index 064bfe1..6c8a312 100644
--- a/c++/src/H5DataType.h
+++ b/c++/src/H5DataType.h
@@ -36,6 +36,9 @@ class H5_DLLCPP DataType : public H5Object {
 	// Copy constructor: makes a copy of the original object
 	DataType( const DataType& original );
 
+	// Creates a copy of a predefined type
+	DataType(const PredType& pred_type);
+
 	// Creates a datatype by way of dereference.
 	DataType(const H5Location& loc, const void* ref, H5R_type_t ref_type = H5R_OBJECT, const PropList& plist = PropList::DEFAULT);
 	DataType(const Attribute& attr, const void* ref, H5R_type_t ref_type = H5R_OBJECT, const PropList& plist = PropList::DEFAULT);
@@ -133,6 +136,9 @@ class H5_DLLCPP DataType : public H5Object {
 #endif // DOXYGEN_SHOULD_SKIP_THIS
 
    private:
+	// Friend function to set DataType id.  For library use only.
+	friend void f_DataType_setId(DataType* dtype, hid_t new_id);
+
 	void p_commit(hid_t loc_id, const char* name);
 };
 #ifndef H5_NO_NAMESPACE
diff --git a/c++/src/H5Exception.cpp b/c++/src/H5Exception.cpp
index f153c92..fb1e42e 100644
--- a/c++/src/H5Exception.cpp
+++ b/c++/src/H5Exception.cpp
@@ -35,11 +35,11 @@ Exception::Exception() : detail_message(""), func_name("") {}
 // Function:	Exception overloaded constructor
 ///\brief	Creates an exception with the name of the function,
 ///		in which the failure occurs, and an optional detailed message.
-///\param	func_name - IN: Name of the function where failure occurs
+///\param	func - IN: Name of the function where failure occurs
 ///\param	message   - IN: Message on the failure
 // Programmer	Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
-Exception::Exception(const H5std_string& func_name, const H5std_string& message) : detail_message(message), func_name(func_name) {}
+Exception::Exception(const H5std_string& func, const H5std_string& message) : detail_message(message), func_name(func) {}
 
 //--------------------------------------------------------------------------
 // Function:	Exception copy constructor
@@ -350,10 +350,10 @@ FileIException::FileIException():Exception(){}
 // Function:	FileIException overloaded constructor
 ///\brief	Creates a FileIException with the name of the function,
 ///		in which the failure occurs, and an optional detailed message.
-///\param	func_name - IN: Name of the function where failure occurs
+///\param	func - IN: Name of the function where failure occurs
 ///\param	message   - IN: Message on the failure
 //--------------------------------------------------------------------------
-FileIException::FileIException(const H5std_string& func_name, const H5std_string& message) : Exception(func_name, message) {}
+FileIException::FileIException(const H5std_string& func, const H5std_string& message) : Exception(func, message) {}
 //--------------------------------------------------------------------------
 // Function:	FileIException destructor
 ///\brief	Noop destructor.
@@ -373,10 +373,10 @@ GroupIException::GroupIException():Exception(){}
 // Function:	GroupIException overloaded constructor
 ///\brief	Creates a GroupIException with the name of the function,
 ///		in which the failure occurs, and an optional detailed message.
-///\param	func_name - IN: Name of the function where failure occurs
+///\param	func - IN: Name of the function where failure occurs
 ///\param	message   - IN: Message on the failure
 //--------------------------------------------------------------------------
-GroupIException::GroupIException(const H5std_string& func_name, const H5std_string& message) : Exception(func_name, message) {}
+GroupIException::GroupIException(const H5std_string& func, const H5std_string& message) : Exception(func, message) {}
 //--------------------------------------------------------------------------
 // Function:	GroupIException destructor
 ///\brief	Noop destructor.
@@ -396,10 +396,10 @@ DataSpaceIException::DataSpaceIException():Exception(){}
 // Function:	DataSpaceIException overloaded constructor
 ///\brief	Creates a DataSpaceIException with the name of the function,
 ///		in which the failure occurs, and an optional detailed message.
-///\param	func_name - IN: Name of the function where failure occurs
+///\param	func - IN: Name of the function where failure occurs
 ///\param	message   - IN: Message on the failure
 //--------------------------------------------------------------------------
-DataSpaceIException::DataSpaceIException(const H5std_string& func_name, const H5std_string& message) : Exception(func_name, message) {}
+DataSpaceIException::DataSpaceIException(const H5std_string& func, const H5std_string& message) : Exception(func, message) {}
 //--------------------------------------------------------------------------
 // Function:	DataSpaceIException destructor
 ///\brief	Noop destructor.
@@ -419,10 +419,10 @@ DataTypeIException::DataTypeIException():Exception(){}
 // Function:	DataTypeIException overloaded constructor
 ///\brief	Creates a DataTypeIException with the name of the function,
 ///		in which the failure occurs, and an optional detailed message.
-///\param	func_name - IN: Name of the function where failure occurs
+///\param	func - IN: Name of the function where failure occurs
 ///\param	message   - IN: Message on the failure
 //--------------------------------------------------------------------------
-DataTypeIException::DataTypeIException(const H5std_string& func_name, const H5std_string& message) : Exception(func_name, message) {}
+DataTypeIException::DataTypeIException(const H5std_string& func, const H5std_string& message) : Exception(func, message) {}
 //--------------------------------------------------------------------------
 // Function:	DataTypeIException destructor
 ///\brief	Noop destructor.
@@ -442,10 +442,10 @@ PropListIException::PropListIException():Exception(){}
 // Function:	PropListIException overloaded constructor
 ///\brief	Creates a PropListIException with the name of the function,
 ///		in which the failure occurs, and an optional detailed message.
-///\param	func_name - IN: Name of the function where failure occurs
+///\param	func - IN: Name of the function where failure occurs
 ///\param	message   - IN: Message on the failure
 //--------------------------------------------------------------------------
-PropListIException::PropListIException(const H5std_string& func_name, const H5std_string& message) : Exception(func_name, message) {}
+PropListIException::PropListIException(const H5std_string& func, const H5std_string& message) : Exception(func, message) {}
 //--------------------------------------------------------------------------
 // Function:	PropListIException destructor
 ///\brief	Noop destructor.
@@ -465,10 +465,10 @@ DataSetIException::DataSetIException():Exception(){}
 // Function:	DataSetIException overloaded constructor
 ///\brief	Creates a DataSetIException with the name of the function,
 ///		in which the failure occurs, and an optional detailed message.
-///\param	func_name - IN: Name of the function where failure occurs
+///\param	func - IN: Name of the function where failure occurs
 ///\param	message   - IN: Message on the failure
 //--------------------------------------------------------------------------
-DataSetIException::DataSetIException(const H5std_string& func_name, const H5std_string& message) : Exception(func_name, message) {}
+DataSetIException::DataSetIException(const H5std_string& func, const H5std_string& message) : Exception(func, message) {}
 //--------------------------------------------------------------------------
 // Function:	DataSetIException destructor
 ///\brief	Noop destructor.
@@ -488,10 +488,10 @@ AttributeIException::AttributeIException():Exception(){}
 // Function:	AttributeIException overloaded constructor
 ///\brief	Creates an AttributeIException with the name of the function,
 ///		in which the failure occurs, and an optional detailed message.
-///\param	func_name - IN: Name of the function where failure occurs
+///\param	func - IN: Name of the function where failure occurs
 ///\param	message   - IN: Message on the failure
 //--------------------------------------------------------------------------
-AttributeIException::AttributeIException(const H5std_string& func_name, const H5std_string& message) : Exception(func_name, message) {}
+AttributeIException::AttributeIException(const H5std_string& func, const H5std_string& message) : Exception(func, message) {}
 //--------------------------------------------------------------------------
 // Function:	AttributeIException destructor
 ///\brief	Noop destructor.
@@ -511,10 +511,10 @@ ReferenceException::ReferenceException():Exception(){}
 // Function:	ReferenceException overloaded constructor
 ///\brief	Creates a ReferenceException with the name of the function,
 ///		in which the failure occurs, and an optional detailed message.
-///\param	func_name - IN: Name of the function where failure occurs
+///\param	func - IN: Name of the function where failure occurs
 ///\param	message   - IN: Message on the failure
 //--------------------------------------------------------------------------
-ReferenceException::ReferenceException(const H5std_string& func_name, const H5std_string& message) : Exception(func_name, message) {}
+ReferenceException::ReferenceException(const H5std_string& func, const H5std_string& message) : Exception(func, message) {}
 //--------------------------------------------------------------------------
 // Function:	ReferenceException destructor
 ///\brief	Noop destructor.
@@ -534,10 +534,10 @@ LibraryIException::LibraryIException():Exception(){}
 // Function:	LibraryIException overloaded constructor
 ///\brief	Creates a LibraryIException with the name of the function,
 ///		in which the failure occurs, and an optional detailed message.
-///\param	func_name - IN: Name of the function where failure occurs
+///\param	func - IN: Name of the function where failure occurs
 ///\param	message   - IN: Message on the failure
 //--------------------------------------------------------------------------
-LibraryIException::LibraryIException(const H5std_string& func_name, const H5std_string& message) : Exception(func_name, message) {}
+LibraryIException::LibraryIException(const H5std_string& func, const H5std_string& message) : Exception(func, message) {}
 //--------------------------------------------------------------------------
 // Function:	LibraryIException destructor
 ///\brief	Noop destructor.
@@ -557,10 +557,10 @@ LocationException::LocationException():Exception(){}
 // Function:	LocationException overloaded constructor
 ///\brief	Creates a LocationException with the name of the function,
 ///		in which the failure occurs, and an optional detailed message.
-///\param	func_name - IN: Name of the function where failure occurs
+///\param	func - IN: Name of the function where failure occurs
 ///\param	message   - IN: Message on the failure
 //--------------------------------------------------------------------------
-LocationException::LocationException(const H5std_string& func_name, const H5std_string& message) : Exception(func_name, message) {}
+LocationException::LocationException(const H5std_string& func, const H5std_string& message) : Exception(func, message) {}
 //--------------------------------------------------------------------------
 // Function:	LocationException destructor
 ///\brief	Noop destructor.
@@ -580,10 +580,10 @@ IdComponentException::IdComponentException(): Exception() {}
 // Function:	IdComponentException overloaded constructor
 ///\brief	Creates a IdComponentException with the name of the function,
 ///		in which the failure occurs, and an optional detailed message.
-///\param	func_name - IN: Name of the function where failure occurs
+///\param	func - IN: Name of the function where failure occurs
 ///\param	message   - IN: Message on the failure
 //--------------------------------------------------------------------------
-IdComponentException::IdComponentException(const H5std_string& func_name, const H5std_string& message) : Exception(func_name, message) {}
+IdComponentException::IdComponentException(const H5std_string& func, const H5std_string& message) : Exception(func, message) {}
 //--------------------------------------------------------------------------
 // Function:	IdComponentException destructor
 ///\brief	Noop destructor.
diff --git a/c++/src/H5FaccProp.cpp b/c++/src/H5FaccProp.cpp
index 5696742..5ce9d8e 100644
--- a/c++/src/H5FaccProp.cpp
+++ b/c++/src/H5FaccProp.cpp
@@ -40,10 +40,10 @@ FileAccPropList::FileAccPropList() : PropList( H5P_FILE_ACCESS ) {}
 //--------------------------------------------------------------------------
 // Function:	FileAccPropList copy constructor
 ///\brief	Copy Constructor: makes a copy of the original
-///		FileAccPropList object.
+///\param	original - IN: FileAccPropList instance to copy
 // Programmer:	Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
-FileAccPropList::FileAccPropList(const FileAccPropList& orig) : PropList(orig) {}
+FileAccPropList::FileAccPropList(const FileAccPropList& original) : PropList(original) {}
 
 //--------------------------------------------------------------------------
 // Function:	FileAccPropList overloaded constructor
@@ -664,6 +664,67 @@ unsigned FileAccPropList::getGcReferences() const
 }
 
 //--------------------------------------------------------------------------
+// Function:	FileAccPropList::setLibverBounds
+///\brief	Sets bounds on versions of library format to be used when creating
+///		or writing objects.
+///\param	libver_low  - IN: Earliest version of the library that will be
+///				  used for creating or writing objects
+///\param	libver_high - IN: Latest version of the library that will be
+///\exception	H5::PropListIException
+///\par Description
+///		Valid values of \a libver_low are as follows:
+///		\li \c H5F_LIBVER_EARLIEST   (Default)
+///		\li \c H5F_LIBVER_18
+///		\li \c H5F_LIBVER_LATEST
+///
+///		Valid values of \a libver_high are as follows:
+///		\li \c H5F_LIBVER_18
+///		\li \c H5F_LIBVER_LATEST   (Default)
+///
+///		For more details, please refer to
+/// http://www.hdfgroup.org/HDF5/doc/RM/RM_H5P.html#Property-SetLibverBounds
+// Programmer:  Binh-Minh Ribler - March, 2015
+//--------------------------------------------------------------------------
+void FileAccPropList::setLibverBounds(H5F_libver_t libver_low, H5F_libver_t libver_high) const
+{
+    herr_t ret_value = H5Pset_libver_bounds(id, libver_low, libver_high);
+    if (ret_value < 0)
+    {
+	throw PropListIException("FileAccPropList::setLibverBounds", "H5Pset_libver_bounds failed");
+    }
+}
+
+//--------------------------------------------------------------------------
+// Function:	FileAccPropList::getLibverBounds
+///\brief	Gets the current settings for the library version format bounds
+///		from a file access property list.
+///\param	libver_low  - OUT: Earliest version of the library that will be
+///				   used for creating or writing objects
+///\param	libver_high - OUT: Latest version of the library that will be
+///				   used for creating or writing objects
+///\exception	H5::PropListIException
+///\par Description
+///		On success, the argument \a libver_low can have the following
+///		values:
+///		\li \c H5F_LIBVER_EARLIEST
+///		\li \c H5F_LIBVER_18
+///		\li \c H5F_LIBVER_LATEST
+///
+///		and \a libver_high:
+///		\li \c H5F_LIBVER_18
+///		\li \c H5F_LIBVER_LATEST
+// Programmer:  Binh-Minh Ribler - March, 2015
+//--------------------------------------------------------------------------
+void FileAccPropList::getLibverBounds(H5F_libver_t& libver_low, H5F_libver_t& libver_high) const
+{
+    herr_t ret_value = H5Pget_libver_bounds(id, &libver_low, &libver_high);
+    if( ret_value < 0 )
+    {
+	throw PropListIException("FileAccPropList::getLibverBounds", "H5Pget_libver_bounds failed");
+    }
+}
+
+//--------------------------------------------------------------------------
 // Function:	FileAccPropList destructor
 ///\brief	Noop destructor
 // Programmer	Binh-Minh Ribler - 2000
diff --git a/c++/src/H5FaccProp.h b/c++/src/H5FaccProp.h
index 861ac4c..fddc446 100644
--- a/c++/src/H5FaccProp.h
+++ b/c++/src/H5FaccProp.h
@@ -126,6 +126,13 @@ class H5_DLLCPP FileAccPropList : public PropList {
 	// Returns garbage collecting references setting.
 	unsigned getGcReferences() const;
 
+	// Sets bounds on versions of library format to be used when creating
+	// or writing objects.
+	void setLibverBounds(H5F_libver_t libver_low, H5F_libver_t libver_high) const;
+
+	// Gets the current settings for the library version format bounds.
+	void getLibverBounds(H5F_libver_t& libver_low, H5F_libver_t& libver_high) const;
+
 	///\brief Returns this class name.
 	virtual H5std_string fromClass () const { return("FileAccPropList"); }
 
diff --git a/c++/src/H5File.cpp b/c++/src/H5File.cpp
index 45e08b2..84e7827 100644
--- a/c++/src/H5File.cpp
+++ b/c++/src/H5File.cpp
@@ -50,7 +50,7 @@ namespace H5 {
 ///\brief	Default constructor: creates a stub H5File object.
 // Programmer	Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
-H5File::H5File() : H5Location(), id(H5I_INVALID_HID) {}
+H5File::H5File() : H5Location(), CommonFG(), id(H5I_INVALID_HID) {}
 
 //--------------------------------------------------------------------------
 // Function:	H5File overloaded constructor
@@ -73,9 +73,6 @@ H5File::H5File() : H5Location(), id(H5I_INVALID_HID) {}
 ///					exists, and fail, otherwise
 ///		\li \c H5F_ACC_RDWR - Open file for read/write, if it already
 ///					exists, and fail, otherwise
-///		\li \c H5F_ACC_DEBUG - print debug information. This flag is
-///			used only by HDF5 library developers; it is neither
-///			tested nor supported for use in applications.
 ///\par
 ///		For info on file creation in the case of an already-open file,
 ///		please refer to the \b Special \b case section in the C layer
@@ -86,7 +83,7 @@ H5File::H5File() : H5Location(), id(H5I_INVALID_HID) {}
 //		to catch then re-throw it. -BMR 2013/03/21
 // Programmer	Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
-H5File::H5File( const char* name, unsigned int flags, const FileCreatPropList& create_plist, const FileAccPropList& access_plist ) : H5Location(), id(H5I_INVALID_HID)
+H5File::H5File( const char* name, unsigned int flags, const FileCreatPropList& create_plist, const FileAccPropList& access_plist ) : H5Location(), CommonFG(), id(H5I_INVALID_HID)
 {
     try {
 	p_get_file(name, flags, create_plist, access_plist);
@@ -111,7 +108,7 @@ H5File::H5File( const char* name, unsigned int flags, const FileCreatPropList& c
 //		to catch then re-throw it. -BMR 2013/03/21
 // Programmer	Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
-H5File::H5File( const H5std_string& name, unsigned int flags, const FileCreatPropList& create_plist, const FileAccPropList& access_plist ) : H5Location(), id(H5I_INVALID_HID)
+H5File::H5File( const H5std_string& name, unsigned int flags, const FileCreatPropList& create_plist, const FileAccPropList& access_plist ) : H5Location(), CommonFG(), id(H5I_INVALID_HID)
 {
     try {
 	p_get_file(name.c_str(), flags, create_plist, access_plist);
@@ -133,38 +130,57 @@ void H5File::p_get_file(const char* name, unsigned int flags, const FileCreatPro
 {
     // These bits only set for creation, so if any of them are set,
     // create the file.
-    if( flags & (H5F_ACC_EXCL|H5F_ACC_TRUNC|H5F_ACC_DEBUG))
+    if( flags & (H5F_ACC_EXCL|H5F_ACC_TRUNC))
     {
-	hid_t create_plist_id = create_plist.getId();
-	hid_t access_plist_id = access_plist.getId();
-	id = H5Fcreate( name, flags, create_plist_id, access_plist_id );
-	if( id < 0 )  // throw an exception when open/create fail
-	{
-	    throw FileIException("H5File constructor", "H5Fcreate failed");
-	}
+        hid_t create_plist_id = create_plist.getId();
+        hid_t access_plist_id = access_plist.getId();
+        id = H5Fcreate( name, flags, create_plist_id, access_plist_id );
+        if( id < 0 )  // throw an exception when open/create fail
+        {
+            throw FileIException("H5File constructor", "H5Fcreate failed");
+        }
     }
     // Open the file if none of the bits above are set.
     else
     {
-	hid_t access_plist_id = access_plist.getId();
-	id = H5Fopen( name, flags, access_plist_id );
-	if( id < 0 )  // throw an exception when open/create fail
-	{
-	    throw FileIException("H5File constructor", "H5Fopen failed");
-	}
+        hid_t access_plist_id = access_plist.getId();
+        id = H5Fopen( name, flags, access_plist_id );
+        if( id < 0 )  // throw an exception when open/create fail
+        {
+            throw FileIException("H5File constructor", "H5Fopen failed");
+        }
     }
 }
 
 #endif // DOXYGEN_SHOULD_SKIP_THIS
 
 //--------------------------------------------------------------------------
+// Function:	H5File overloaded constructor
+///\brief	Creates an H5File object using an existing file id.
+///\param	existing_id - IN: Id of an existing file
+// Programmer	Binh-Minh Ribler - 2015
+// Description
+//	Mar 29, 2015
+//		Added in responding to a request from user Jason Newton.
+//		However, it is not recommended to use the private member "id"
+//		in applications.  Unlike other situations, where similar
+//		constructor is needed by the library in order to return
+//		an object, H5File doesn't need it. -BMR (HDFFV-8766 partially)
+//--------------------------------------------------------------------------
+H5File::H5File(hid_t existing_id) : H5Location(), CommonFG()
+{
+    id = existing_id;
+    incRefCount(); // increment number of references to this id
+}
+
+//--------------------------------------------------------------------------
 // Function:	H5File copy constructor
 ///\brief	Copy constructor: makes a copy of the original
 ///		H5File object.
 ///\param	original - IN: H5File instance to copy
 // Programmer	Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
-H5File::H5File(const H5File& original) : H5Location(original)
+H5File::H5File(const H5File& original) : H5Location(), CommonFG()
 {
     id = original.getId();
     incRefCount(); // increment number of references to this id
@@ -225,6 +241,13 @@ bool H5File::isHdf5(const H5std_string& name )
 //--------------------------------------------------------------------------
 void H5File::openFile(const char* name, unsigned int flags, const FileAccPropList& access_plist)
 {
+    try {
+        close();
+    }
+    catch (Exception close_error) {
+        throw FileIException("H5File::openFile", close_error.getDetailMsg());
+    }
+
     hid_t access_plist_id = access_plist.getId();
     id = H5Fopen (name, flags, access_plist_id);
     if (id < 0)  // throw an exception when open fails
@@ -379,25 +402,6 @@ ssize_t H5File::getObjCount(unsigned types) const
 }
 
 //--------------------------------------------------------------------------
-// Function:	H5File::getObjCount
-///\brief	This is an overloaded member function, provided for convenience.
-///		It takes no parameter and returns the object count of all
-///		object types.
-///\return	Number of opened object IDs
-///\exception	H5::FileIException
-// Programmer   Binh-Minh Ribler - May 2004
-//--------------------------------------------------------------------------
-ssize_t H5File::getObjCount() const
-{
-   ssize_t num_objs = H5Fget_obj_count(id, H5F_OBJ_ALL);
-   if( num_objs < 0 )
-   {
-      throw FileIException("H5File::getObjCount", "H5Fget_obj_count failed");
-   }
-   return (num_objs);
-}
-
-//--------------------------------------------------------------------------
 // Function:	H5File::getObjIDs
 ///\brief	Retrieves a list of opened object IDs (files, datasets,
 ///		groups and datatypes) in the same file.
diff --git a/c++/src/H5File.h b/c++/src/H5File.h
index 0ef85b5..939ac8e 100644
--- a/c++/src/H5File.h
+++ b/c++/src/H5File.h
@@ -59,8 +59,7 @@ class H5_DLLCPP H5File : public H5Location, public CommonFG {
 
 	// Returns the number of opened object IDs (files, datasets, groups
 	// and datatypes) in the same file.
-	ssize_t getObjCount(unsigned types) const;
-	ssize_t getObjCount() const;
+	ssize_t getObjCount(unsigned types = H5F_OBJ_ALL) const;
 
 	// Retrieves a list of opened object IDs (files, datasets, groups
 	// and datatypes) in the same file.
@@ -84,6 +83,10 @@ class H5_DLLCPP H5File : public H5Location, public CommonFG {
 	// Gets the file id
 	virtual hid_t getLocId() const;
 
+	// Creates an H5File using an existing file id.  Not recommended
+	// in applications.
+	H5File(hid_t existing_id);
+
 #endif // DOXYGEN_SHOULD_SKIP_THIS
 
 	///\brief Returns this class name.
diff --git a/c++/src/H5Group.cpp b/c++/src/H5Group.cpp
index cad5e29..4d1d61c 100644
--- a/c++/src/H5Group.cpp
+++ b/c++/src/H5Group.cpp
@@ -51,7 +51,7 @@ namespace H5 {
 ///\brief	Default constructor: creates a stub Group.
 // Programmer	Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
-Group::Group() : H5Object(), id(H5I_INVALID_HID) {}
+Group::Group() : H5Object(), CommonFG(), id(H5I_INVALID_HID) {}
 
 //--------------------------------------------------------------------------
 // Function:	Group copy constructor
@@ -59,7 +59,7 @@ Group::Group() : H5Object(), id(H5I_INVALID_HID) {}
 ///\param	original - IN: Original group to copy
 // Programmer	Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
-Group::Group(const Group& original) : H5Object(original)
+Group::Group(const Group& original) : H5Object(), CommonFG()
 {
     id = original.getId();
     incRefCount(); // increment number of references to this id
@@ -82,9 +82,10 @@ hid_t Group::getLocId() const
 ///\param	existing_id - IN: Id of an existing group
 // Programmer	Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
-Group::Group(const hid_t existing_id) : H5Object()
+Group::Group(const hid_t existing_id) : H5Object(), CommonFG()
 {
     id = existing_id;
+    incRefCount(); // increment number of references to this id
 }
 
 //--------------------------------------------------------------------------
@@ -100,7 +101,7 @@ Group::Group(const hid_t existing_id) : H5Object()
 ///		is a datatype that has been named by DataType::commit.
 // Programmer	Binh-Minh Ribler - Oct, 2006
 //--------------------------------------------------------------------------
-Group::Group(const H5Location& loc, const void* ref, H5R_type_t ref_type, const PropList& plist) : H5Object(), id(H5I_INVALID_HID)
+Group::Group(const H5Location& loc, const void* ref, H5R_type_t ref_type, const PropList& plist) : H5Object(), CommonFG(), id(H5I_INVALID_HID)
 {
     id = H5Location::p_dereference(loc.getId(), ref, ref_type, plist, "constructor - by dereference");
 }
@@ -115,7 +116,7 @@ Group::Group(const H5Location& loc, const void* ref, H5R_type_t ref_type, const
 ///\exception	H5::ReferenceException
 // Programmer	Binh-Minh Ribler - Oct, 2006
 //--------------------------------------------------------------------------
-Group::Group(const Attribute& attr, const void* ref, H5R_type_t ref_type, const PropList& plist) : H5Object(), id(H5I_INVALID_HID)
+Group::Group(const Attribute& attr, const void* ref, H5R_type_t ref_type, const PropList& plist) : H5Object(), CommonFG(), id(H5I_INVALID_HID)
 {
     id = H5Location::p_dereference(attr.getId(), ref, ref_type, plist, "constructor - by dereference");
 }
diff --git a/c++/src/H5IdComponent.cpp b/c++/src/H5IdComponent.cpp
index 4a9dcac..c01d41e 100644
--- a/c++/src/H5IdComponent.cpp
+++ b/c++/src/H5IdComponent.cpp
@@ -37,16 +37,33 @@ namespace H5 {
 ///\param	h5_id - IN: Id of an existing object
 ///\exception	H5::DataTypeIException
 // Programmer	Binh-Minh Ribler - 2000
+//
+// *** Deprecation warning ***
+// This constructor is no longer appropriate because the data member "id" had
+// been moved to the sub-classes.  It will be removed in 1.10 release.  If its
+// removal does not raise any problems in 1.10, it will be removed from 1.8 in
+// subsequent releases.
 //--------------------------------------------------------------------------
 IdComponent::IdComponent(const hid_t h5_id) {}
 
+//void IdComponent::p_setId(const hid_t new_id)
+//{
+    //p_setId(new_id);
+//}
+
 //--------------------------------------------------------------------------
 // Function:	IdComponent copy constructor
-///\brief	Copy constructor: makes a copy of the original IdComponent object.
-///\param	original - IN: IdComponent instance to copy
+// Purpose:	This noop copy constructor is removed as a result of the data
+//		member "id" being moved down to sub-classes. (Mar 2015)
+// Parameters:	original - IN: IdComponent instance to copy
 // Programmer	Binh-Minh Ribler - 2000
+//
+// *** Deprecation warning ***
+// This constructor is no longer appropriate because the data member "id" had
+// been moved to the sub-classes.  It is removed from 1.8.15 because it is
+// a noop and it can be generated by the compiler if needed.
 //--------------------------------------------------------------------------
-IdComponent::IdComponent( const IdComponent& original ) {}
+// IdComponent::IdComponent(const IdComponent& original) {}
 
 //--------------------------------------------------------------------------
 // Function:	IdComponent::incRefCount
@@ -82,12 +99,14 @@ void IdComponent::decRefCount(const hid_t obj_id) const
 {
     if (p_valid_id(obj_id))
 	if (H5Idec_ref(obj_id) < 0)
+	{
 	    if (H5Iget_ref(obj_id) <= 0)
 		throw IdComponentException(inMemFunc("decRefCount"),
 					"object ref count is 0 or negative");
 	    else
 		throw IdComponentException(inMemFunc("decRefCount"),
 					"decrementing object ref count failed");
+	}
 }
 
 //--------------------------------------------------------------------------
diff --git a/c++/src/H5IdComponent.h b/c++/src/H5IdComponent.h
index 3208a39..068fb74 100644
--- a/c++/src/H5IdComponent.h
+++ b/c++/src/H5IdComponent.h
@@ -60,11 +60,18 @@ class H5_DLLCPP IdComponent {
 	// Sets the identifier of this object to a new value.
 	void setId(const hid_t new_id);
 
+	// *** Deprecation warning ***
+	// The following two constructors are no longer appropriate after the
+	// data member "id" had been moved to the sub-classes.
+	// The copy constructor is a noop and is removed in 1.8.15 and the
+	// other will be removed from 1.10 release, and then from 1.8 if its
+	// removal does not raise any problems in two 1.10 releases.
+
 	// Creates an object to hold an HDF5 identifier.
 	IdComponent( const hid_t h5_id );
 
 	// Copy constructor: makes copy of the original IdComponent object.
-	IdComponent( const IdComponent& original );
+	// IdComponent( const IdComponent& original );
 
 #ifndef DOXYGEN_SHOULD_SKIP_THIS
 	// Pure virtual function for there are various H5*close for the
@@ -97,6 +104,7 @@ class H5_DLLCPP IdComponent {
 	// Sets the identifier of this object to a new value. - this one
 	// doesn't increment reference count
 	virtual void p_setId(const hid_t new_id) = 0;
+	//virtual void p_setId(const hid_t new_id);
 
 #endif // DOXYGEN_SHOULD_SKIP_THIS
 
diff --git a/c++/src/H5Include.h b/c++/src/H5Include.h
index 87cb182..1e0e952 100644
--- a/c++/src/H5Include.h
+++ b/c++/src/H5Include.h
@@ -28,3 +28,15 @@ typedef int bool;
 const bool  false = 0;
 const bool  true  = 1;
 #endif
+
+// These are defined in H5Opkg.h, which should not be included in the C++ API,
+// so re-define them here for now.
+
+/* Initial version of the object header format */
+#define H5O_VERSION_1	1
+
+/* Revised version - leaves out reserved bytes and alignment padding, and adds
+ *      magic number as prefix and checksum as suffix for all chunks.
+ */
+#define H5O_VERSION_2	2
+
diff --git a/c++/src/H5IntType.h b/c++/src/H5IntType.h
index 95fa642..e28f5c2 100644
--- a/c++/src/H5IntType.h
+++ b/c++/src/H5IntType.h
@@ -24,7 +24,7 @@ namespace H5 {
 //! Class IntType operates on HDF5 integer datatype.
 class H5_DLLCPP IntType : public AtomType {
    public:
-	// Creates a integer type using a predefined type
+	// Creates an integer type using a predefined type
 	IntType(const PredType& pred_type);
 
 	// Gets the integer datatype of the specified dataset
diff --git a/c++/src/H5Location.cpp b/c++/src/H5Location.cpp
index cd733c4..5100e12 100644
--- a/c++/src/H5Location.cpp
+++ b/c++/src/H5Location.cpp
@@ -70,17 +70,28 @@ H5Location::H5Location() : IdComponent() {}
 //		object.
 // Parameters	object_id - IN: Id of an existing HDF5 object
 // Programmer	Binh-Minh Ribler - 2000
+
+// *** Deprecation warning ***
+// This constructor is no longer appropriate because the data member "id" had
+// been moved to the sub-classes.  It will be removed in 1.10 release.  If its
+// removal does not raise any problems in 1.10, it will be removed from 1.8 in
+// subsequent releases.
 //--------------------------------------------------------------------------
-H5Location::H5Location(const hid_t object_id) : IdComponent(object_id) {}
+H5Location::H5Location(const hid_t object_id) : IdComponent() {}
 
 //--------------------------------------------------------------------------
 // Function:	H5Location copy constructor
-///\brief	Copy constructor: makes a copy of the original H5Location
-///		instance.
+// Purpose:	This noop copy constructor is removed as a result of the data
+//		member "id" being moved down to sub-classes. (Mar 2015)
 ///\param	original - IN: H5Location instance to copy
 // Programmer	Binh-Minh Ribler - 2000
+//
+// *** Deprecation warning ***
+// This constructor is no longer appropriate because the data member "id" had
+// been moved to the sub-classes.  It is removed from 1.8.15 because it is
+// a noop and it can be generated by the compiler if needed.
 //--------------------------------------------------------------------------
-H5Location::H5Location( const H5Location& original ) : IdComponent( original ) {}
+// H5Location::H5Location(const H5Location& original) : IdComponent() {}
 
 #endif // DOXYGEN_SHOULD_SKIP_THIS
 
@@ -115,8 +126,9 @@ Attribute H5Location::createAttribute( const char* name, const DataType& data_ty
    // If the attribute id is valid, create and return the Attribute object
    if( attr_id > 0 )
    {
-      Attribute attr( attr_id );
-      return( attr );
+	Attribute attr;
+	f_Attribute_setId(&attr, attr_id);
+	return( attr );
    }
    else
       throw AttributeIException(inMemFunc("createAttribute"), "H5Acreate2 failed");
@@ -147,8 +159,9 @@ Attribute H5Location::openAttribute( const char* name ) const
    hid_t attr_id = H5Aopen(getId(), name, H5P_DEFAULT);
    if( attr_id > 0 )
    {
-      Attribute attr( attr_id );
-      return( attr );
+	Attribute attr;
+	f_Attribute_setId(&attr, attr_id);
+	return( attr );
    }
    else
    {
@@ -182,12 +195,13 @@ Attribute H5Location::openAttribute( const unsigned int idx ) const
 			H5_ITER_INC, (hsize_t)idx, H5P_DEFAULT, H5P_DEFAULT);
    if( attr_id > 0 )
    {
-      Attribute attr( attr_id );
-      return( attr );
+	Attribute attr;
+	f_Attribute_setId(&attr, attr_id);
+	return(attr);
    }
    else
    {
-      throw AttributeIException(inMemFunc("openAttribute"), "H5Aopen_by_idx failed");
+	throw AttributeIException(inMemFunc("openAttribute"), "H5Aopen_by_idx failed");
    }
 }
 
@@ -893,6 +907,12 @@ H5O_type_t H5Location::p_get_ref_obj_type(void *ref, H5R_type_t ref_type) const
 ///\return	DataSpace object
 ///\exception	H5::ReferenceException
 // Programmer	Binh-Minh Ribler - May, 2004
+// Modification
+//	Mar 29, 2015
+//		Used friend function to set id for DataSpace instead of the
+//		existing id constructor or the setId method to avoid incrementing
+//		ref count, as a work-around for a problem described in the JIRA
+//		issue HDFFV-7947. -BMR
 //--------------------------------------------------------------------------
 DataSpace H5Location::getRegion(void *ref, H5R_type_t ref_type) const
 {
@@ -902,8 +922,9 @@ DataSpace H5Location::getRegion(void *ref, H5R_type_t ref_type) const
       throw ReferenceException(inMemFunc("getRegion"), "H5Rget_region failed");
    }
    try {
-      DataSpace dataspace(space_id);
-      return(dataspace);
+	DataSpace dataspace;
+	f_DataSpace_setId(&dataspace, space_id);
+	return(dataspace);
    }
    catch (DataSpaceIException E) {
       throw ReferenceException(inMemFunc("getRegion"), E.getDetailMsg());
@@ -918,6 +939,36 @@ DataSpace H5Location::getRegion(void *ref, H5R_type_t ref_type) const
 //--------------------------------------------------------------------------
 H5Location::~H5Location() {}
 
+//--------------------------------------------------------------------------
+// Function:	f_Attribute_setId - friend
+// Purpose:	This function is friend to class H5::Attribute so that it
+//		can set Attribute::id in order to work around a problem
+//		described in the JIRA issue HDFFV-7947.
+//		Applications shouldn't need to use it.
+// param	attr   - IN/OUT: Attribute object to be changed
+// param	new_id - IN: New id to set
+// Programmer	Binh-Minh Ribler - 2015
+//--------------------------------------------------------------------------
+void f_Attribute_setId(Attribute* attr, hid_t new_id)
+{
+    attr->id = new_id;
+}
+
+//--------------------------------------------------------------------------
+// Function:	f_DataSpace_setId - friend
+// Purpose:	This function is friend to class H5::DataSpace so that it can
+//		can set DataSpace::id in order to work around a problem
+//		described in the JIRA issue HDFFV-7947.
+//		Applications shouldn't need to use it.
+// param	dspace   - IN/OUT: DataSpace object to be changed
+// param	new_id - IN: New id to set
+// Programmer	Binh-Minh Ribler - 2015
+//--------------------------------------------------------------------------
+void f_DataSpace_setId(DataSpace* dspace, hid_t new_id)
+{
+    dspace->id = new_id;
+}
+
 #endif // DOXYGEN_SHOULD_SKIP_THIS
 
 #ifndef H5_NO_NAMESPACE
diff --git a/c++/src/H5Location.h b/c++/src/H5Location.h
index e015825..79a8d5c 100644
--- a/c++/src/H5Location.h
+++ b/c++/src/H5Location.h
@@ -138,13 +138,21 @@ class H5_DLLCPP H5Location : public IdComponent {
 	// Default constructor
 	H5Location();
 
+#ifndef DOXYGEN_SHOULD_SKIP_THIS
+
+	// *** Deprecation warning ***
+	// The following two constructors are no longer appropriate after the
+	// data member "id" had been moved to the sub-classes.
+	// The copy constructor is a noop and is removed in 1.8.15 and the
+	// other will be removed from 1.10 release, and then from 1.8 if its
+	// removal does not raise any problems in two 1.10 releases.
+
 	// Creates a copy of an existing object giving the location id.
 	H5Location(const hid_t loc_id);
 
 	// Copy constructor.
-	H5Location(const H5Location& original);
+	// H5Location(const H5Location& original);
 
-#ifndef DOXYGEN_SHOULD_SKIP_THIS
 	// Creates a reference to an HDF5 object or a dataset region.
 	void p_reference(void* ref, const char* name, hid_t space_id, H5R_type_t ref_type) const;
 
@@ -159,6 +167,10 @@ class H5_DLLCPP H5Location : public IdComponent {
 	// Retrieves the type of object that an object reference points to.
 	H5O_type_t p_get_ref_obj_type(void *ref, H5R_type_t ref_type) const;
 
+        // Sets the identifier of this object to a new value. - this one
+        // doesn't increment reference count
+        virtual void p_setId(const hid_t new_id) = 0;
+
 #endif // DOXYGEN_SHOULD_SKIP_THIS
 
 	// Noop destructor.
diff --git a/c++/src/H5Object.cpp b/c++/src/H5Object.cpp
index 94b03ab..df3f565 100644
--- a/c++/src/H5Object.cpp
+++ b/c++/src/H5Object.cpp
@@ -50,8 +50,26 @@ H5Object::H5Object() : H5Location() {}
 // 		object.
 // Parameters	object_id - IN: Id of an existing HDF5 object
 // Programmer	Binh-Minh Ribler - 2000
+// *** Deprecation warning ***
+// This constructor is no longer appropriate because the data member "id" had
+// been moved to the sub-classes.  It will be removed in 1.10 release.  If its
+// removal does not raise any problems in 1.10, it will be removed from 1.8 in
+// subsequent releases.
 //--------------------------------------------------------------------------
-H5Object::H5Object( const hid_t object_id ) : H5Location( object_id ) {}
+H5Object::H5Object(const hid_t object_id) : H5Location() {}
+
+//--------------------------------------------------------------------------
+// Function:	H5Object copy constructor
+///\brief	Copy constructor: makes a copy of the original H5Object
+///		instance.
+///\param	original - IN: H5Object instance to copy
+// Programmer	Binh-Minh Ribler - 2000
+// *** Deprecation warning ***
+// This constructor is no longer appropriate because the data member "id" had
+// been moved to the sub-classes.  It is removed from 1.8.15 because it is
+// a noop and it can be generated by the compiler if needed.
+//--------------------------------------------------------------------------
+// H5Object::H5Object(const H5Object& original) : H5Location() {}
 
 //--------------------------------------------------------------------------
 // Function:    getObjName
@@ -165,15 +183,6 @@ ssize_t H5Object::getObjName(H5std_string& obj_name, size_t len) const
 }
 
 //--------------------------------------------------------------------------
-// Function:	H5Object copy constructor
-///\brief	Copy constructor: makes a copy of the original H5Object
-///		instance.
-///\param	original - IN: H5Object instance to copy
-// Programmer	Binh-Minh Ribler - 2000
-//--------------------------------------------------------------------------
-H5Object::H5Object( const H5Object& original ) : H5Location( original ) {}
-
-//--------------------------------------------------------------------------
 // Function:	H5Object destructor
 ///\brief	Noop destructor.
 // Programmer	Binh-Minh Ribler - 2000
diff --git a/c++/src/H5Object.h b/c++/src/H5Object.h
index 5576d13..f8ac792 100644
--- a/c++/src/H5Object.h
+++ b/c++/src/H5Object.h
@@ -47,9 +47,6 @@ namespace H5 {
 class H5_DLLCPP H5Object : public H5Location {
    public:
 #ifndef DOXYGEN_SHOULD_SKIP_THIS
-	// Copy constructor: makes copy of an H5Object object.
-	H5Object(const H5Object& original);
-
 	// Gets the name of this HDF5 object, i.e., Group, DataSet, or
 	// DataType.
 	ssize_t getObjName(char *obj_name, size_t buf_size = 0) const;
@@ -63,9 +60,19 @@ class H5_DLLCPP H5Object : public H5Location {
 	// Default constructor
 	H5Object();
 
+        // *** Deprecation warning ***
+        // The following two constructors are no longer appropriate after the
+        // data member "id" had been moved to the sub-classes.
+        // The copy constructor is a noop and is removed in 1.8.15 and the
+        // other will be removed from 1.10 release, and then from 1.8 if its
+        // removal does not raise any problems in two 1.10 releases.
+
 	// Creates a copy of an existing object giving the object id
 	H5Object( const hid_t object_id );
 
+	// Copy constructor: makes copy of an H5Object object.
+	// H5Object(const H5Object& original);
+
 #endif // DOXYGEN_SHOULD_SKIP_THIS
 
 }; /* end class H5Object */
diff --git a/c++/src/H5PropList.cpp b/c++/src/H5PropList.cpp
index 5afe80f..70ec629 100644
--- a/c++/src/H5PropList.cpp
+++ b/c++/src/H5PropList.cpp
@@ -54,7 +54,7 @@ PropList::PropList() : IdComponent(), id(H5P_DEFAULT) {}
 ///\param	original - IN: The original property list to copy
 // Programmer	Binh-Minh Ribler - 2000
 //--------------------------------------------------------------------------
-PropList::PropList(const PropList& original) : IdComponent(original)
+PropList::PropList(const PropList& original) : IdComponent()
 {
     id = original.getId();
     incRefCount(); // increment number of references to this id
@@ -258,6 +258,7 @@ void PropList::p_setId(const hid_t new_id)
    // reset object's id to the given id
    id = new_id;
 }
+
 #endif // DOXYGEN_SHOULD_SKIP_THIS
 
 //--------------------------------------------------------------------------
diff --git a/c++/src/H5VarLenType.h b/c++/src/H5VarLenType.h
index 40c597f..672b3db 100644
--- a/c++/src/H5VarLenType.h
+++ b/c++/src/H5VarLenType.h
@@ -40,7 +40,6 @@ class H5_DLLCPP VarLenType : public DataType {
 	// Noop destructor
 	virtual ~VarLenType();
 
-   protected:
 	// Default constructor
 	VarLenType();
 };
diff --git a/c++/src/cpp_doc_config b/c++/src/cpp_doc_config
index f2caed2..4072c1b 100644
--- a/c++/src/cpp_doc_config
+++ b/c++/src/cpp_doc_config
@@ -38,7 +38,7 @@ PROJECT_NAME           = "HDF5 C++ API"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 1.8.13
+PROJECT_NUMBER         = HDF5 version 1.9.218 currently under development
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/c++/test/CMakeLists.txt b/c++/test/CMakeLists.txt
index fe463fa..dcdf3a3 100644
--- a/c++/test/CMakeLists.txt
+++ b/c++/test/CMakeLists.txt
@@ -36,7 +36,7 @@ configure_file (${HDF5_CPP_TEST_SOURCE_DIR}/H5srcdir_str.h.in H5srcdir_str.h  @O
 
 add_executable (cpp_testhdf5 ${CPP_TEST_SRCS} )
 TARGET_NAMING (cpp_testhdf5 ${LIB_TYPE})
-TARGET_C_PROPERTIES (cpp_testhdf5 " " " ")
+TARGET_C_PROPERTIES (cpp_testhdf5 ${LIB_TYPE} " " " ")
 target_link_libraries (cpp_testhdf5
     ${HDF5_CPP_LIB_TARGET}
     ${HDF5_LIB_TARGET}
diff --git a/c++/test/dsets.cpp b/c++/test/dsets.cpp
index fc0ea3a..9f1916d 100644
--- a/c++/test/dsets.cpp
+++ b/c++/test/dsets.cpp
@@ -56,11 +56,12 @@ const H5std_string	DSET_TCONV_NAME	("tconv");
 const H5std_string	DSET_COMPRESS_NAME("compressed");
 const H5std_string	DSET_BOGUS_NAME	("bogus");
 
+/* Temporary filter IDs used for testing */
 const int H5Z_FILTER_BOGUS = 305;
 
-// Local prototypes
 static size_t filter_bogus(unsigned int flags, size_t cd_nelmts,
     const unsigned int *cd_values, size_t nbytes, size_t *buf_size, void **buf);
+// UNUSED variables caused warning, but taking them out caused failure.
 
 /*-------------------------------------------------------------------------
  * Function:	test_create
@@ -458,13 +459,10 @@ const H5Z_class2_t H5Z_BOGUS[1] = {{
  *-------------------------------------------------------------------------
  */
 static size_t
-/*bogus(unsigned int UNUSED flags, size_t UNUSED cd_nelmts,
-      const unsigned int UNUSED cd_values[], size_t nbytes,
-      size_t UNUSED *buf_size, void UNUSED **buf)
-BMR: removed UNUSED for now until asking Q. or R. to pass compilation*/
 filter_bogus(unsigned int flags, size_t cd_nelmts,
       const unsigned int cd_values[], size_t nbytes,
       size_t *buf_size, void **buf)
+// UNUSED variables caused warning, but taking them out caused failure.
 {
     return nbytes;
 }
diff --git a/c++/test/tattr.cpp b/c++/test/tattr.cpp
index 29f50f8..c9422ce 100644
--- a/c++/test/tattr.cpp
+++ b/c++/test/tattr.cpp
@@ -53,9 +53,9 @@ const size_t		ATTR_MAX_DIMS = 7;
 
 /* 3-D dataset with fixed dimensions */
 const int SPACE1_RANK = 3;
-const int SPACE1_DIM1 = 3;
-const int SPACE1_DIM2 = 15;
-const int SPACE1_DIM3 = 13;
+const hsize_t SPACE1_DIM1 = 3;
+const hsize_t SPACE1_DIM2 = 15;
+const hsize_t SPACE1_DIM3 = 13;
 
 /* Object names */
 const H5std_string DSET1_NAME("Dataset1");
@@ -65,7 +65,7 @@ const H5std_string TYPE1_NAME("/Type");
 /* Attribute Rank & Dimensions */
 const H5std_string ATTR1_NAME("Attr1");
 const int ATTR1_RANK = 1;
-const int ATTR1_DIM1 = 3;
+const hsize_t ATTR1_DIM1 = 3;
 int attr_data1[ATTR1_DIM1]={512,-234,98123}; /* Test data for 1st attribute */
 
 // File attribute, using the same rank and dimensions as ATTR1_NAME's
@@ -74,8 +74,8 @@ const H5std_string FATTR2_NAME("File Attr2");
 
 const H5std_string ATTR2_NAME("Attr2");
 const int ATTR2_RANK = 2;
-const int ATTR2_DIM1 = 2;
-const int ATTR2_DIM2 = 2;
+const hsize_t ATTR2_DIM1 = 2;
+const hsize_t ATTR2_DIM2 = 2;
 int attr_data2[ATTR2_DIM1][ATTR2_DIM2]={{7614,-416},{197814,-3}}; /* Test data for 2nd attribute */
 
 const H5std_string ATTR3_NAME("Attr3");
@@ -123,7 +123,7 @@ static void test_attr_basic_write()
     hsize_t dims2[] = {ATTR1_DIM1};
     hsize_t dims3[] = {ATTR2_DIM1,ATTR2_DIM2};
     int     read_data1[ATTR1_DIM1]={0}; // Buffer for reading 1st attribute
-    int     i;
+    hsize_t i;
 
     // Output message about test being performed
     SUBTEST("Basic Attribute Writing Functions");
@@ -384,7 +384,7 @@ static void test_attr_getname()
 static void test_attr_rename()
 {
     int read_data1[ATTR1_DIM1]={0}; // Buffer for reading the attribute
-    int i;
+    hsize_t i;
 
     // Output message about test being performed
     SUBTEST("Checking for Existence and Renaming Attribute");
@@ -493,7 +493,7 @@ static void test_attr_rename()
 ********************************************************************/
 static void test_attr_basic_read()
 {
-    int i, j;
+    hsize_t i, j;
 
     // Output message about test being performed
     SUBTEST("Basic Attribute Reading Functions");
@@ -624,7 +624,6 @@ static void test_attr_compound_read()
     size_t      size;   // Attribute datatype size as stored in file
     size_t      offset; // Attribute datatype field offset
     struct attr4_struct read_data4[ATTR4_DIM1][ATTR4_DIM2]; // Buffer for reading 4th attribute
-    hsize_t i,j;
 
     // Output message about test being performed
     SUBTEST("Basic Attribute Functions");
@@ -654,7 +653,7 @@ static void test_attr_compound_read()
 
 	// Get the dims of the dataspace and verify them
 	int ndims = space.getSimpleExtentDims(dims);
-	if(dims[0]!=ATTR4_DIM1)
+	verify_val(ndims, ATTR4_RANK, "DataSpace::getSimpleExtentDims", __LINE__, __FILE__);
         verify_val((long)dims[0], (long)ATTR4_DIM1, "DataSpace::getSimpleExtentDims",__LINE__, __FILE__);
         verify_val((long)dims[1], (long)ATTR4_DIM2, "DataSpace::getSimpleExtentDims",__LINE__, __FILE__);
 
@@ -673,13 +672,14 @@ static void test_attr_compound_read()
 
 	// Verify that the fields have the same names as when the type
 	// was created
-	for(i=0; i<fields; i++)
+	int j;
+	for(j=0; j<fields; j++)
 	{
-	    H5std_string fieldname = datatype.getMemberName(i);
+	    H5std_string fieldname = datatype.getMemberName(j);
 	    if(!((fieldname == ATTR4_FIELDNAME1) ||
 		(fieldname == ATTR4_FIELDNAME2) ||
 		(fieldname == ATTR4_FIELDNAME3)))
-            TestErrPrintf("%d:invalid field name for field #%d: %s\n",__LINE__,i,fieldname.c_str());
+            TestErrPrintf("%d:invalid field name for field #%d: %s\n",__LINE__,j,fieldname.c_str());
 	} /* end for */
 
 	offset = datatype.getMemberOffset(0);
@@ -729,23 +729,38 @@ static void test_attr_compound_read()
 	attr.read(datatype, read_data4);
 
 	// Verify values read in
-	for(i=0; i<ATTR4_DIM1; i++)
-	    for(j=0; j<ATTR4_DIM2; j++)
-		if(HDmemcmp(&attr_data4[i][j],&read_data4[i][j],sizeof(struct attr4_struct))) {
-		    TestErrPrintf("%d:attribute data different: attr_data4[%d][%d].i=%d, read_data4[%d][%d].i=%d\n",__LINE__,i,j,attr_data4[i][j].i,i,j,read_data4[i][j].i);
-		    TestErrPrintf("%d:attribute data different: attr_data4[%d][%d].d=%f, read_data4[%d][%d].d=%f\n",__LINE__,i,j,attr_data4[i][j].d,i,j,read_data4[i][j].d);
-		    TestErrPrintf("%d:attribute data different: attr_data4[%d][%d].c=%c, read_data4[%d][%d].c=%c\n",__LINE__,i,j,attr_data4[i][j].c,i,j,read_data4[i][j].c);
+	hsize_t ii, jj;
+	for(ii=0; ii<ATTR4_DIM1; ii++)
+	    for(jj=0; jj<ATTR4_DIM2; jj++)
+		if(HDmemcmp(&attr_data4[ii][jj],&read_data4[ii][jj],sizeof(struct attr4_struct))) {
+		    TestErrPrintf("%d:attribute data different: attr_data4[%d][%d].i=%d, read_data4[%d][%d].i=%d\n",__LINE__,ii,jj,attr_data4[ii][jj].i,ii,jj,read_data4[ii][jj].i);
+		    TestErrPrintf("%d:attribute data different: attr_data4[%d][%d].d=%f, read_data4[%d][%d].d=%f\n",__LINE__,ii,jj,attr_data4[ii][jj].d,ii,jj,read_data4[ii][jj].d);
+		    TestErrPrintf("%d:attribute data different: attr_data4[%d][%d].c=%c, read_data4[%d][%d].c=%c\n",__LINE__,ii,jj,attr_data4[ii][jj].c,ii,jj,read_data4[ii][jj].c);
              } /* end if */
 
 	// Verify name
 	H5std_string attr_name = attr.getName();
 	verify_val(attr_name, ATTR4_NAME, "Attribute::getName", __LINE__, __FILE__);
-	PASSED();
     } // end try block
 
     catch (Exception E) {
 	issue_fail_msg("test_attr_compound_read()", __LINE__, __FILE__, E.getCDetailMsg());
     }
+
+    try
+    {
+	// Now, try truncating the file to make sure reference counting is good.
+	// If any references to ids in the previous block are left unterminated,
+	// the truncating will fail, because the file will not be closed in
+	// the file.close() above.
+	H5File file1(FILE_COMPOUND, H5F_ACC_TRUNC);
+
+	PASSED();
+    } // end try block
+
+    catch (FileIException E) {
+	issue_fail_msg("test_attr_compound_read()", __LINE__, __FILE__, "Unable to truncate file, possibly because some objects are left opened");
+    }
 }   // test_attr_compound_read()
 
 /****************************************************************
@@ -928,7 +943,7 @@ static void test_attr_mult_read()
     int     read_data1[ATTR1_DIM1]={0}; // Buffer for reading 1st attribute
     int     read_data2[ATTR2_DIM1][ATTR2_DIM2]={{0}}; // Buffer for reading 2nd attribute
     double  read_data3[ATTR3_DIM1][ATTR3_DIM2][ATTR3_DIM3]={{{0}}}; // Buffer for reading 3rd attribute
-    int     i,j,k;
+    hsize_t i,j,k;
 
 	// Output message about test being performed
     SUBTEST("Multiple Attribute Reading Functions");
@@ -959,7 +974,7 @@ static void test_attr_mult_read()
 	// Get the dims of the dataspace and verify them
 	hsize_t dims[ATTR_MAX_DIMS];    // Attribute dimensions
 	int ndims = space.getSimpleExtentDims(dims);
-	if(dims[0]!=ATTR1_DIM1)
+	if ((long)dims[0] != (long)ATTR1_DIM1)
 	    TestErrPrintf("%d:attribute dimensions different: dims[0]=%d, should be %d\n",__LINE__,(int)dims[0],ATTR1_DIM1);
 
 	/* Verify Datatype */
@@ -1010,10 +1025,9 @@ static void test_attr_mult_read()
 
 	// Get the dims of the dataspace and verify them
 	ndims = space.getSimpleExtentDims(dims);
-	if(dims[0]!=ATTR2_DIM1)
-	    TestErrPrintf("%d:attribute dimensions different: dims[0]=%d, should be %d\n",__LINE__,(int)dims[0],ATTR2_DIM1);
-	if(dims[1]!=ATTR2_DIM2)
-	    TestErrPrintf("%d:attribute dimensions different: dims[1]=%d, should be %d\n",__LINE__,(int)dims[1],ATTR2_DIM2);
+
+        verify_val((long)dims[0], (long)ATTR2_DIM1, "DataSpace::getSimpleExtentDims",__LINE__, __FILE__);
+        verify_val((long)dims[1], (long)ATTR2_DIM2, "DataSpace::getSimpleExtentDims",__LINE__, __FILE__);
 
 	/* Verify Datatype */
 
diff --git a/c++/test/tcompound.cpp b/c++/test/tcompound.cpp
index 156f438..dbf2f0c 100644
--- a/c++/test/tcompound.cpp
+++ b/c++/test/tcompound.cpp
@@ -780,7 +780,7 @@ static void test_compound_set_size()
 	CompType dtype_tmp = file.openCompType("dtype");
 
 	// Make a copy of the data type
-	dtype = dtype_tmp;
+	dtype.copy(dtype_tmp);
 
 	// Verify that the compound is not packed
 	// packed = dtype_tmp.packed(); // not until C library provides API
diff --git a/c++/test/tfile.cpp b/c++/test/tfile.cpp
index ad5e6fc..f3bbb16 100644
--- a/c++/test/tfile.cpp
+++ b/c++/test/tfile.cpp
@@ -330,6 +330,32 @@ static void test_file_open()
         verify_val(iparm1, F2_SYM_INTERN_K, "FileCreatPropList::getSymk", __LINE__, __FILE__);
         verify_val(iparm2, F2_SYM_LEAF_K, "FileCreatPropList::getSymk", __LINE__, __FILE__);
 
+	// Test H5File constructor with existing file id
+	H5File file2(file1.getId());
+	file1.close();
+
+	// Try truncating the file, and it should fail because the file is
+	// still opened with file2.
+    	try {
+	    H5File file3 (FILE2, H5F_ACC_TRUNC);  // should throw E
+
+	    // Should FAIL but didn't, so throw an invalid action exception
+	    throw InvalidActionException("H5File constructor", "Attempt truncating an opened file.");
+    	}
+	catch( FileIException E ) // catching H5F_ACC_TRUNC on opened file
+	{} // do nothing, FAIL expected
+
+	// Now, really close the file.
+	file2.close();
+
+	// Truncating should succeed now.
+	H5File file3(FILE2, H5F_ACC_TRUNC);
+
+	// Opening another file to file3 object, FILE2 should be closed, so
+	// the next attempt to truncate FILE2 should succeed.
+	file3.openFile(FILE1, H5F_ACC_RDONLY);
+	H5File file4(FILE2, H5F_ACC_TRUNC);
+
 	PASSED();
     }   // end of try block
 
@@ -501,6 +527,7 @@ const H5std_string	FATTR1_NAME ("file attribute 1");
 const H5std_string	FATTR2_NAME ("file attribute 2");
 int fattr_data[ATTR1_DIM1]={512,-234,98123}; /* Test data for file attribute */
 int dattr_data[ATTR1_DIM1]={256,-123,1000}; /* Test data for dataset attribute */
+
 static void test_file_attribute()
 {
     int rdata[ATTR1_DIM1];
@@ -602,6 +629,119 @@ static void test_file_attribute()
     }
 }   // test_file_attribute()
 
+const H5std_string	FILE6("tfile5.h5");
+const H5std_string	ROOTGROUP("/");
+const H5std_string	GROUP1("/G1");
+const H5std_string	SUBGROUP3("/G1/G3");
+
+/*-------------------------------------------------------------------------
+ * Function:	test_libver_bounds_real
+ *
+ * Purpose:	Verify that a file created and modified with the
+ *		specified libver bounds has the specified object header
+ *		versions for the right objects.
+ *
+ * Return:	None
+ *
+ * Programmer:	Binh-Minh Ribler (use C version)
+ *		March, 2015
+ *
+ *-------------------------------------------------------------------------
+ */
+static void test_libver_bounds_real(
+		H5F_libver_t libver_create, unsigned oh_vers_create,
+		H5F_libver_t libver_mod, unsigned oh_vers_mod)
+{
+    try {
+
+    /*
+     * Create a new file using the default creation property and access property
+     * with latest library version.
+     */
+    FileAccPropList fapl;
+    fapl.setLibverBounds(libver_create, H5F_LIBVER_LATEST);
+    H5File file(FILE6, H5F_ACC_TRUNC, FileCreatPropList::DEFAULT, fapl);
+
+    /*
+     * Make sure the root group has the correct object header version
+     */
+    unsigned obj_version = file.childObjVersion(ROOTGROUP);
+    verify_val(obj_version, oh_vers_create, "H5File::childObjVersion", __LINE__, __FILE__);
+
+    /*
+     * Reopen the file and make sure the root group still has the correct version
+     */
+    file.close();
+
+    fapl.setLibverBounds(libver_mod, H5F_LIBVER_LATEST);
+
+    file.openFile(FILE6, H5F_ACC_RDWR, fapl);
+
+    obj_version = file.childObjVersion(ROOTGROUP);
+    verify_val(obj_version, oh_vers_create, "H5File::childObjVersion", __LINE__, __FILE__);
+
+    /*
+     * Create a group named "/G1" in the file, and make sure it has the correct
+     * object header version
+     */
+    Group group = file.createGroup(GROUP1);
+
+    obj_version = file.childObjVersion(GROUP1);
+    verify_val(obj_version, oh_vers_mod, "H5File::childObjVersion", __LINE__, __FILE__);
+
+    group.close(); // close "/G1"
+
+    /*
+     * Create a group named "/G1/G3" in the file, and make sure it has the
+     * correct object header version
+     */
+    group = file.createGroup(SUBGROUP3);
+
+    obj_version = group.childObjVersion(SUBGROUP3);
+    verify_val(obj_version, oh_vers_mod, "H5File::childObjVersion", __LINE__, __FILE__);
+
+    group.close(); // close "/G1/G3"
+
+    /*
+     * Make sure the root group still has the correct object header version
+     */
+    obj_version = file.childObjVersion(ROOTGROUP);
+    verify_val(obj_version, oh_vers_create, "H5File::childObjVersion", __LINE__, __FILE__);
+
+    // Everything should be closed as they go out of scope
+    }   // end of try block
+
+    catch (Exception E) {
+        issue_fail_msg("test_libver_bounds_real()", __LINE__, __FILE__, E.getCDetailMsg());
+    }
+
+} /* end test_libver_bounds_real() */
+
+/*-------------------------------------------------------------------------
+ *
+ * Function:    test_libver_bounds
+ *
+ * Purpose:     Verify that a file created and modified with various
+ *		libver bounds is handled correctly.
+ *
+ * Return:      None
+ *
+ * Programmer:  Binh-Minh Ribler (use C version)
+ *              March 2015
+ *
+ *-------------------------------------------------------------------------
+ */
+static void test_libver_bounds()
+{
+    // Output message about test being performed
+    SUBTEST("Setting library version bounds");
+
+    /* Run the tests */
+    test_libver_bounds_real(H5F_LIBVER_EARLIEST, H5O_VERSION_1, H5F_LIBVER_LATEST, H5O_VERSION_2);
+    test_libver_bounds_real(H5F_LIBVER_LATEST, H5O_VERSION_2, H5F_LIBVER_EARLIEST, H5O_VERSION_1);
+    PASSED();
+} /* end test_libver_bounds() */
+
 /*-------------------------------------------------------------------------
  * Function:    test_file
  *
@@ -629,6 +769,7 @@ void test_file()
     test_file_size();	// Test file size
     test_file_name();	// Test getting file's name
     test_file_attribute();	// Test file attribute feature
+    test_libver_bounds();	// Test format version
 }   // test_file()
 
 
@@ -655,4 +796,5 @@ void cleanup_file()
     HDremove(FILE3.c_str());
     HDremove(FILE4.c_str());
     HDremove(FILE5.c_str());
+    HDremove(FILE6.c_str());
 }   // cleanup_file
diff --git a/c++/test/tfilter.cpp b/c++/test/tfilter.cpp
index 854c7bb..3edb83a 100644
--- a/c++/test/tfilter.cpp
+++ b/c++/test/tfilter.cpp
@@ -57,9 +57,13 @@ static herr_t test_filter_internal(hid_t fid, const char *name, hid_t dcpl,
 #endif
 
 /* Temporary filter IDs used for testing */
-#define H5Z_FILTER_BOGUS        305
+const int H5Z_FILTER_BOGUS = 305;
+
+#if 0 // UNUSED variables caused warning, so duplicated below with NULL instead
 static size_t filter_bogus(unsigned int flags, size_t cd_nelmts,
     const unsigned int *cd_values, size_t nbytes, size_t *buf_size, void **buf);
+#endif
+static size_t filter_bogus(size_t nbytes);
 /* This message derives from H5Z */
 const H5Z_class2_t H5Z_BOGUS[1] = {{
     H5Z_CLASS_T_VERS,       /* H5Z_class_t version */
@@ -88,9 +92,12 @@ const H5Z_class2_t H5Z_BOGUS[1] = {{
  *-------------------------------------------------------------------------
  */
 static size_t
+#if 0 // UNUSED variables caused warning, so duplicated below with NULL instead
 filter_bogus(unsigned int UNUSED flags, size_t UNUSED cd_nelmts,
       const unsigned int UNUSED *cd_values, size_t nbytes,
       size_t UNUSED *buf_size, void UNUSED **buf)
+#endif
+filter_bogus(size_t nbytes)
 {
     return nbytes;
 }
@@ -239,7 +246,8 @@ static void test_szip_filter(H5File& file1)
 #else /* H5_HAVE_FILTER_SZIP */
     SUBTEST("szip filter");
     SKIPPED();
-    puts("    Szip filter not enabled");
+    H5std_string fname = file1.getFileName();
+    cerr << "    Szip filter not enabled for file '" << fname << "'" << endl;
 #endif /* H5_HAVE_FILTER_SZIP */
 }  // test_szip_filter
 
diff --git a/c++/test/tobject.cpp b/c++/test/tobject.cpp
index b86d7cb..2381ec2 100644
--- a/c++/test/tobject.cpp
+++ b/c++/test/tobject.cpp
@@ -181,19 +181,39 @@ static void test_get_objname_ontypes()
 	Group grp = file.createGroup ("typetests");
 
 	// Create a datatype and save it
+	IntType inttype(PredType::STD_B8LE);
+	inttype.commit(file, "INT type of STD_B8LE");
+
+	// Close the type then open it again to test getting its name
+	inttype.close();
+	inttype = file.openIntType("INT type of STD_B8LE");
+
+	// Get and verify its name
+	H5std_string inttype_name = inttype.getObjName();
+	verify_val(inttype_name, "/INT type of STD_B8LE", "DataType::getObjName", __LINE__, __FILE__);
+
+	// Make copy of a predefined type and save it
 	DataType dtype(PredType::STD_B8LE);
 	dtype.commit(file, "STD_B8LE");
 
+	// Close the data type and file
+	dtype.close();
+	file.close();
+
+	// Re-open the file and the data type to test getting its name
+	file.openFile(FILE_OBJECTS, H5F_ACC_RDWR);
+	dtype = file.openDataType("STD_B8LE");
+
 	// Get and verify its name
 	H5std_string type_name = dtype.getObjName();
-	verify_val(type_name, "/STD_B8LE", "DataSet::getObjName", __LINE__, __FILE__);
+	verify_val(type_name, "/STD_B8LE", "DataType::getObjName", __LINE__, __FILE__);
 
 	// Test getting type's name from copied type
 	DataType copied_type;
 	copied_type.copy(dtype);
 	copied_type.commit(file, "copy of STD_B8LE");
 	type_name = copied_type.getObjName();
-	verify_val(type_name, "/copy of STD_B8LE", "DataSet::getObjName", __LINE__, __FILE__);
+	verify_val(type_name, "/copy of STD_B8LE", "DataType::getObjName", __LINE__, __FILE__);
 
 	// Test copying an integer predefined type
 	IntType new_int_type(PredType::NATIVE_INT);
@@ -201,14 +221,14 @@ static void test_get_objname_ontypes()
 	// Name this datatype
 	new_int_type.commit(grp, "IntType NATIVE_INT");
 	ssize_t name_len = new_int_type.getObjName(type_name); // default len
-	verify_val(type_name, "/typetests/IntType NATIVE_INT", "DataSet::getObjName", __LINE__, __FILE__);
+	verify_val(name_len, (ssize_t)HDstrlen("/typetests/IntType NATIVE_INT"), "DataType::getObjName", __LINE__, __FILE__);
+	verify_val(type_name, "/typetests/IntType NATIVE_INT", "DataType::getObjName", __LINE__, __FILE__);
 
 	// Close everything or they can be closed when objects go out of scope
 	dtype.close();
 	copied_type.close();
 	new_int_type.close();
 	grp.close();
-	file.close();
 
 	PASSED();
     } // end top try block
diff --git a/c++/test/trefer.cpp b/c++/test/trefer.cpp
index dcfb644..9d072be 100644
--- a/c++/test/trefer.cpp
+++ b/c++/test/trefer.cpp
@@ -462,11 +462,11 @@ test_reference_group(void)
 
 	// Check number of objects in the group dereferenced by constructor
 	hsize_t nobjs = refgroup.getNumObjs();
-	verify_val(nobjs, 3, "H5Group::getNumObjs",__LINE__,__FILE__);
+	verify_val(nobjs, (hsize_t)3, "H5Group::getNumObjs",__LINE__,__FILE__);
 
 	// Check number of objects in the group dereferenced by ::reference
 	nobjs = group.getNumObjs();
-	verify_val(nobjs, 3, "H5Group::getNumObjs",__LINE__,__FILE__);
+	verify_val(nobjs, (hsize_t)3, "H5Group::getNumObjs",__LINE__,__FILE__);
 
 	// Check getting file name given the group dereferenced via constructor
 	H5std_string fname = refgroup.getFileName();
@@ -479,7 +479,7 @@ test_reference_group(void)
 	// Unlink one of the objects in the dereferenced group, and re-check
 	refgroup.unlink(GROUPNAME2);
 	nobjs = refgroup.getNumObjs();
-	verify_val(nobjs, 2, "H5Group::getNumObjs",__LINE__,__FILE__);
+	verify_val(nobjs, (hsize_t)2, "H5Group::getNumObjs",__LINE__,__FILE__);
 
 	// Close resources
 	group.close();
@@ -686,43 +686,43 @@ test_reference_region_1D(void)
 	reg_sp.getSelectHyperBlocklist((hsize_t)0, (hsize_t)nelms, coords);
 
 	// Verify values in the list
-	verify_val(coords[0],   2, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[1],   3, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[2],   7, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[3],   8, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[4],  12, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[5],  13, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[6],  17, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[7],  18, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[8],  22, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[9],  23, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[10], 27, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[11], 28, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[12], 32, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[13], 33, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[14], 37, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[15], 38, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[16], 42, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[17], 43, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[18], 47, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[19], 48, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[20], 52, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[21], 53, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[22], 57, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[23], 58, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[24], 62, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[25], 63, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[26], 67, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[27], 68, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[28], 72, "Hyperslab Coordinates",__LINE__,__FILE__);
-	verify_val(coords[29], 73, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[0], (hsize_t)2, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[1], (hsize_t)3, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[2], (hsize_t)7, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[3], (hsize_t)8, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[4],(hsize_t)12, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[5],(hsize_t)13, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[6],(hsize_t)17, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[7],(hsize_t)18, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[8],(hsize_t)22, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[9],(hsize_t)23, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[10],(hsize_t)27, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[11],(hsize_t)28, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[12],(hsize_t)32, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[13],(hsize_t)33, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[14],(hsize_t)37, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[15],(hsize_t)38, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[16],(hsize_t)42, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[17],(hsize_t)43, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[18],(hsize_t)47, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[19],(hsize_t)48, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[20],(hsize_t)52, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[21],(hsize_t)53, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[22],(hsize_t)57, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[23],(hsize_t)58, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[24],(hsize_t)62, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[25],(hsize_t)63, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[26],(hsize_t)67, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[27],(hsize_t)68, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[28],(hsize_t)72, "Hyperslab Coordinates",__LINE__,__FILE__);
+	verify_val(coords[29],(hsize_t)73, "Hyperslab Coordinates",__LINE__,__FILE__);
 
 	HDfree(coords);
 
 	// Check boundaries
 	reg_sp.getSelectBounds(low, high);
-	verify_val(low[0], 2, "DataSpace::getSelectBounds",__LINE__,__FILE__);
-	verify_val(high[0], 73, "DataSpace::getSelectBounds",__LINE__,__FILE__);
+	verify_val(low[0],(hsize_t)2, "DataSpace::getSelectBounds",__LINE__,__FILE__);
+	verify_val(high[0],(hsize_t)73, "DataSpace::getSelectBounds",__LINE__,__FILE__);
 
 	/* Close region space */
 	reg_sp.close();
@@ -760,8 +760,8 @@ test_reference_region_1D(void)
 
 	// Check boundaries
 	elm_sp.getSelectBounds(low, high);
-	verify_val(low[0], 3, "DataSpace::getSelectBounds",__LINE__,__FILE__);
-	verify_val(high[0], 97, "DataSpace::getSelectBounds",__LINE__,__FILE__);
+	verify_val(low[0],(hsize_t)3, "DataSpace::getSelectBounds",__LINE__,__FILE__);
+	verify_val(high[0],(hsize_t)97, "DataSpace::getSelectBounds",__LINE__,__FILE__);
 
 	// Close element space
 	elm_sp.close();
diff --git a/c++/test/ttypes.cpp b/c++/test/ttypes.cpp
index e9e1427..2e64051 100644
--- a/c++/test/ttypes.cpp
+++ b/c++/test/ttypes.cpp
@@ -109,7 +109,7 @@ static void test_classes()
 {
     SUBTEST("PredType::getClass()");
     try {
-	int curr_nerrors = GetTestNumErrs();
+	// maybe later, int curr_nerrors = GetTestNumErrs();
 
 	// PredType::NATIVE_INT should be in H5T_INTEGER class
 	H5T_class_t tcls = PredType::NATIVE_INT.getClass();
@@ -283,10 +283,16 @@ static void test_query()
 	tid2.close();
 	file.close();
 
+	// Try truncating the file to make sure reference counting is good.
+	// If any references to ids of tid1 and tid2 are left unterminated,
+	// the truncating will fail, because the file will not be closed in
+	// the file.close() above.
+	H5File file1(FILENAME[2], H5F_ACC_TRUNC);
+
 	PASSED();
     }   // end of try block
     catch (Exception E) {
-        issue_fail_msg("test_query", __LINE__, __FILE__, E.getCDetailMsg());
+	issue_fail_msg("test_query", __LINE__, __FILE__, E.getCDetailMsg());
     }
 }   // test_query
 
@@ -467,27 +473,20 @@ static void test_named ()
 	trans_type.setPrecision(256);
 	trans_type.close();
 
-    /*
-     * Close the committed type and reopen it.  It should return a named type.
-* This had something to do with the way IntType was returned and assigned
-and caused itype.committed not working correctly.  So, use another_type for
-now.
+	// Close the committed type and reopen it.  It should be a named type.
 	itype.close();
 	itype = file.openIntType("native-int");
 	iscommitted = itype.committed();
-*/
-	IntType another_type = file.openIntType("native-int");
-	iscommitted = another_type.committed();
 	if (!iscommitted)
 	    throw InvalidActionException("IntType::committed()", "Opened named types should be named types!");
 
 	// Create a dataset that uses the named type, then get the dataset's
 	// datatype and make sure it's a named type.
-	DataSet dset = file.createDataSet("dset1", another_type, space);
+	DataSet dset = file.createDataSet("dset1", itype, space);
 	ds_type = new DataType(dset.getDataType());
 	iscommitted = ds_type->committed();
 	if (!iscommitted)
-	    throw InvalidActionException("IntType::committed()", "1 Dataset type should be named type!");
+	    throw InvalidActionException("IntType::committed()", "Dataset type should be named type!");
 	dset.close();
 	ds_type->close();
         delete ds_type;
diff --git a/c++/test/tvlstr.cpp b/c++/test/tvlstr.cpp
index a2669db..7c81a8e 100644
--- a/c++/test/tvlstr.cpp
+++ b/c++/test/tvlstr.cpp
@@ -60,6 +60,7 @@ const hsize_t SPACE1_DIM1 = 4;
 **  Note: exact copy from the C version.
 **  (Not used now)
 ****************************************************************/
+#if 0 // not used now
 static void *test_vlstr_alloc_custom(size_t size, void *info)
 {
     void *ret_value=NULL;	// Pointer to return
@@ -81,6 +82,7 @@ static void *test_vlstr_alloc_custom(size_t size, void *info)
 
     return(ret_value);
 }
+#endif
 
 /****************************************************************
 **
@@ -92,6 +94,7 @@ static void *test_vlstr_alloc_custom(size_t size, void *info)
 **  Note: exact copy from the C version.
 **  (Not used now)
 ****************************************************************/
+#if 0 // not used now
 static void test_vlstr_free_custom(void *_mem, void *info)
 {
     unsigned char *mem;
@@ -111,6 +114,7 @@ static void test_vlstr_free_custom(void *_mem, void *info)
         HDfree(mem);
     } // end if
 }
+#endif
 
 /*-------------------------------------------------------------------------
  * Function:	test_vlstring_dataset
@@ -256,7 +260,7 @@ static void test_vlstring_array_dataset()
 	char *string_ds_check[SPACE1_DIM1];
 	dataset.read(string_ds_check, vlst);
 
-	int ii;
+	hsize_t ii;
 	for (ii = 0; ii < SPACE1_DIM1; ii++)
 	{
 	    if(HDstrcmp(string_ds_check[ii], string_ds_array[ii])!=0)
@@ -351,25 +355,25 @@ static void test_vlstrings_special()
 	dataset.read(rdata, vlst);
 
 	// Check data read in.
-	hsize_t i;      	// counting variable
-	for (i=0; i<SPACE1_DIM1; i++)
-	    if(rdata[i]!=NULL)
-		TestErrPrintf("VL doesn't match!, rdata[%d]=%p\n",(int)i,rdata[i]);
+	hsize_t ii;      	// counting variable
+	for (ii=0; ii<SPACE1_DIM1; ii++)
+	    if(rdata[ii]!=NULL)
+		TestErrPrintf("VL doesn't match!, rdata[%d]=%p\n",(int)ii,rdata[ii]);
 
 	// Write dataset to disk, then read it back.
 	dataset.write(wdata, vlst);
 	dataset.read(rdata, vlst);
 
 	// Compare data read in.
-	for (i = 0; i < SPACE1_DIM1; i++) {
-	    size_t wlen = HDstrlen(wdata[i]);
-	    size_t rlen = HDstrlen(rdata[i]);
+	for (ii = 0; ii < SPACE1_DIM1; ii++) {
+	    size_t wlen = HDstrlen(wdata[ii]);
+	    size_t rlen = HDstrlen(rdata[ii]);
 	    if(wlen != rlen) {
-		TestErrPrintf("VL data lengths don't match!, strlen(wdata[%d])=%u, strlen(rdata[%d])=%u\n", (int)i, (unsigned)wlen, (int)i, (unsigned)rlen);
+		TestErrPrintf("VL data lengths don't match!, strlen(wdata[%d])=%u, strlen(rdata[%d])=%u\n", (int)ii, (unsigned)wlen, (int)ii, (unsigned)rlen);
 		continue;
 	    } // end if
-	    if(HDstrcmp(wdata[i],rdata[i]) != 0) {
-		TestErrPrintf("VL data values don't match!, wdata[%d]=%s, rdata[%d]=%s\n", (int)i, wdata[i], (int)i, rdata[i]);
+	    if(HDstrcmp(wdata[ii],rdata[ii]) != 0) {
+		TestErrPrintf("VL data values don't match!, wdata[%d]=%s, rdata[%d]=%s\n", (int)ii, wdata[ii], (int)ii, rdata[ii]);
 		continue;
 	    } // end if
 	} // end for
@@ -398,9 +402,9 @@ static void test_vlstrings_special()
 	dataset.read(rdata, vlst);
 
 	// Check data read in.
-	for (i=0; i<SPACE1_DIM1; i++)
-	  if(rdata[i]!=NULL)
-	    TestErrPrintf("VL doesn't match!, rdata[%d]=%p\n",(int)i,rdata[i]);
+	for (ii=0; ii<SPACE1_DIM1; ii++)
+	  if(rdata[ii]!=NULL)
+	    TestErrPrintf("VL doesn't match!, rdata[%d]=%p\n",(int)ii,rdata[ii]);
 
 	// Try to write nil strings to disk.
 	dataset.write(wdata2, vlst);
@@ -409,9 +413,9 @@ static void test_vlstrings_special()
 	dataset.read(rdata, vlst);
 
 	// Check data read in.
-	for (i=0; i<SPACE1_DIM1; i++)
-	  if(rdata[i]!=NULL)
-	    TestErrPrintf("VL doesn't match!, rdata[%d]=%p\n",(int)i,rdata[i]);
+	for (ii=0; ii<SPACE1_DIM1; ii++)
+	  if(rdata[ii]!=NULL)
+	    TestErrPrintf("VL doesn't match!, rdata[%d]=%p\n",(int)ii,rdata[ii]);
 
 	// Close objects and file.
 	dataset.close();
@@ -793,7 +797,7 @@ static void test_vlstring_array_attribute()
 	char *string_att_check[SPACE1_DIM1];
 	gr_attr.read(vlst, &string_att_check);
 
-	int ii;
+	hsize_t ii;
 	for (ii = 0; ii < SPACE1_DIM1; ii++)
 	{
 	    if(HDstrcmp(string_att_check[ii], string_att_array[ii])!=0)