[svn-r15395] When an attribute was opened twice and data was written with one of the handles,

the file didn't have the data.  It happened because each handle had its own
object structure, and the empty one overwrote the data with fill value.  This is
fixed by making some attribute information like the data be shared in the
attribute structure.

Tested on smirom, kagiso, and linew.

1 files changed, 6 insertions, 5 deletions

diff --git a/c++/src/H5DataSet.cpp b/c++/src/H5DataSet.cpp
index be80949..5ee84b1 100644
--- a/c++/src/H5DataSet.cpp
+++ b/c++/src/H5DataSet.cpp
@@ -69,11 +69,10 @@ 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()
+DataSet::DataSet(const DataSet& original) : AbstractDs(original), H5Object(original)
 {
     id = original.getId();
     incRefCount(); // increment number of references to this id
-
 }
 
 //--------------------------------------------------------------------------
@@ -559,7 +558,7 @@ void DataSet::setId(const hid_t new_id)
    id = new_id;
 
    // increment the reference counter of the new id
-   incRefCount();
+   //incRefCount();
 }
 
 //--------------------------------------------------------------------------
@@ -578,8 +577,10 @@ void DataSet::close()
 	{
 	    throw DataSetIException("DataSet::close", "H5Dclose failed");
 	}
-	// reset the id because the dataset that it represents is now closed
-	id = 0;
+	// reset the id when the dataset that it represents is no longer
+	// referenced
+	if (getCounter() == 0)
+	    id = 0;
     }
 }