[svn-r28052] Purpose: Fix memory leaks

Description:
    - Implemented the friend function
        void f_PropList_setId(PropList* plist, hid_t new_id)
      to work around the same problem described in trunk r26655, for the
      API DataSet::getCreatePlist()
    - Cleaned up some comments and obsolete functions
    Merged from trunk r28047
Platforms tested:
    Linux/32 2.6 (jam)
    Darwin (osx1010test)

7 files changed, 36 insertions, 39 deletions

diff --git a/c++/src/H5AbstractDs.cpp b/c++/src/H5AbstractDs.cpp
index 5929444..06b3e22 100644
--- a/c++/src/H5AbstractDs.cpp
+++ b/c++/src/H5AbstractDs.cpp
@@ -52,18 +52,6 @@ AbstractDs::AbstractDs(){}
 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){}
-
-//--------------------------------------------------------------------------
 // Function:	AbstractDs::getTypeClass
 ///\brief	Returns the class of the datatype that is used by this
 ///		object, which can be a dataset or an attribute.
diff --git a/c++/src/H5CppDoc.h b/c++/src/H5CppDoc.h
index 388fc25..2420586 100644
--- a/c++/src/H5CppDoc.h
+++ b/c++/src/H5CppDoc.h
@@ -29,10 +29,10 @@
  * The C++ API provides C++ wrappers for the HDF5 C Library.
  * 
  * It is assumed that the user has knowledge of the 
- * <a href="http://www.hdfgroup.org/HDF5/doc/H5.format.html">
+ * <a href="https://www.hdfgroup.org/HDF5/doc/H5.format.html">
  * HDF5 file format</a> and its components. 
  * For more information on the HDF5 C Library, see the 
- * <a href="http://www.hdfgroup.org/HDF5/doc/index.html"> 
+ * <a href="https://www.hdfgroup.org/HDF5/doc/index.html"> 
  * HDF5 Software Documentation</a> page.
  *
  * Because the HDF5 C Library maps very well to
@@ -57,8 +57,8 @@
  *
  * The HDF5 C++ API is included with the HDF5 source code and can 
  * be obtained from 
- * <a href="http://www.hdfgroup.org/HDF5/release/obtainsrc.html">
- * http://www.hdfgroup.org/HDF5/release/obtainsrc.html</a>.
+ * <a href="https://www.hdfgroup.org/HDF5/release/obtainsrc.html">
+ * https://www.hdfgroup.org/HDF5/release/obtainsrc.html</a>.
  * 
  * Please refer to the release_docs/INSTALL file under the top directory 
  * of the HDF5 source code for information about installing, building, 
diff --git a/c++/src/H5DataSet.cpp b/c++/src/H5DataSet.cpp
index 9497a08..af1277a 100644
--- a/c++/src/H5DataSet.cpp
+++ b/c++/src/H5DataSet.cpp
@@ -60,6 +60,12 @@ DataSet::DataSet() : H5Object(), AbstractDs(), id(H5I_INVALID_HID) {}
 ///\brief	Creates an DataSet object using the id of an existing dataset.
 ///\param	existing_id - IN: Id of an existing dataset
 // Programmer	Binh-Minh Ribler - 2000
+// Description
+//		incRefCount() is needed here to prevent the id from being closed
+//		prematurely.  That is, when application uses the id of an
+//		existing DataSet object to create another DataSet object.  So,
+//		when one of those objects is deleted, the id will be closed if
+//		the reference counter is only 1.
 //--------------------------------------------------------------------------
 DataSet::DataSet(const hid_t existing_id) : H5Object(), AbstractDs()
 {
@@ -170,8 +176,10 @@ DSetCreatPropList DataSet::getCreatePlist() const
    {
       throw DataSetIException("DataSet::getCreatePlist", "H5Dget_create_plist failed");
    }
+
    // create and return the DSetCreatPropList object
-   DSetCreatPropList create_plist(create_plist_id); // ok to use existing id const
+   DSetCreatPropList create_plist;
+   f_PropList_setId(&create_plist, create_plist_id);
    return(create_plist);
 }
 
@@ -770,6 +778,22 @@ void DataSet::p_setId(const hid_t new_id)
    // reset object's id to the given id
    id = new_id;
 }
+
+//--------------------------------------------------------------------------
+// Function:    f_PropList_setId - friend
+// Purpose:     This function is friend to class H5::PropList so that it
+//              can set PropList::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_PropList_setId(PropList* plist, hid_t new_id)
+{
+    plist->p_setId(new_id);
+}
+
 #endif // DOXYGEN_SHOULD_SKIP_THIS
 
 //--------------------------------------------------------------------------
diff --git a/c++/src/H5DataType.cpp b/c++/src/H5DataType.cpp
index 47aaa14..d98a0cf 100644
--- a/c++/src/H5DataType.cpp
+++ b/c++/src/H5DataType.cpp
@@ -237,8 +237,7 @@ DataType& DataType::operator=( const DataType& rhs )
 {
     if (this != &rhs)
     {
-	id = rhs.id;
-	incRefCount(); // increment number of references to this id
+	setId(rhs.id);
     }
     return(*this);
 }
diff --git a/c++/src/H5IdComponent.cpp b/c++/src/H5IdComponent.cpp
index 19d68cf..60735f0 100644
--- a/c++/src/H5IdComponent.cpp
+++ b/c++/src/H5IdComponent.cpp
@@ -52,20 +52,6 @@ bool IdComponent::H5dontAtexit_called = false;
 IdComponent::IdComponent(const hid_t h5_id) {}
 
 //--------------------------------------------------------------------------
-// Function:	IdComponent copy constructor
-// 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) {}
-
-//--------------------------------------------------------------------------
 // Function:	IdComponent::incRefCount
 ///\brief	Increment reference counter for a given id.
 // Programmer	Binh-Minh Ribler - May 2005
@@ -231,7 +217,7 @@ IdComponent& IdComponent::operator=( const IdComponent& rhs )
 //--------------------------------------------------------------------------
 // Function:	IdComponent::setId
 ///\brief	Sets the identifier of this object to a new value.
-///
+///\param	new_id - IN: New identifier to be set to
 ///\exception	H5::IdComponentException when the attempt to close the HDF5
 ///		object fails
 // Description:
@@ -246,8 +232,8 @@ IdComponent& IdComponent::operator=( const IdComponent& rhs )
 //		C++ API object, which will be destroyed properly, and so
 //		p_setId does not call incRefCount.  On the other hand, the
 //		public version setId is used by other applications, in which
-//		the id passed to setId already has a reference count, so setId
-//		must call incRefCount.
+//		the id passed to setId is that of another C++ API object, so
+//		setId must call incRefCount.
 //--------------------------------------------------------------------------
 void IdComponent::setId(const hid_t new_id)
 {
diff --git a/c++/src/H5Location.h b/c++/src/H5Location.h
index dc6ae51..37571c5 100644
--- a/c++/src/H5Location.h
+++ b/c++/src/H5Location.h
@@ -148,9 +148,6 @@ class H5_DLLCPP H5Location : public IdComponent {
 	// Creates a copy of an existing object giving the location id.
 	H5Location(const hid_t loc_id);
 
-	// Copy constructor.
-	// H5Location(const H5Location& original);
-
 	// 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;
 
diff --git a/c++/src/H5PropList.h b/c++/src/H5PropList.h
index be04451..7f6ee31 100644
--- a/c++/src/H5PropList.h
+++ b/c++/src/H5PropList.h
@@ -127,6 +127,9 @@ class H5_DLLCPP PropList : public IdComponent {
 	// Dynamically allocates the PropList global constant
 	static PropList* getConstant();
 
+	// Friend function to set PropList id.  For library use only.
+	friend void f_PropList_setId(PropList* plist, hid_t new_id);
+
 #endif // DOXYGEN_SHOULD_SKIP_THIS
 };