diff --git a/extensions/transformiix/source/xpath/AdditiveExpr.cpp b/extensions/transformiix/source/xpath/AdditiveExpr.cpp
index d191551ef01..58931d2b3af 100644
--- a/extensions/transformiix/source/xpath/AdditiveExpr.cpp
+++ b/extensions/transformiix/source/xpath/AdditiveExpr.cpp
@@ -38,13 +38,16 @@
 /**
  * Creates a new AdditiveExpr using the given operator
 **/
-AdditiveExpr::AdditiveExpr(nsAutoPtr<Expr> aLeftExpr,
-                           nsAutoPtr<Expr> aRightExpr, short aOp)
-    : op(aOp),
-      leftExpr(aLeftExpr),
-      rightExpr(aRightExpr)
-{
-}
+AdditiveExpr::AdditiveExpr(Expr* leftExpr, Expr* rightExpr, short op) {
+    this->op = op;
+    this->leftExpr = leftExpr;
+    this->rightExpr = rightExpr;
+} //-- AdditiveExpr
+
+AdditiveExpr::~AdditiveExpr() {
+    delete leftExpr;
+    delete rightExpr;
+} //-- ~AdditiveExpr
 
 /**
  * Evaluates this Expr based on the given context node and processor state
diff --git a/extensions/transformiix/source/xpath/AttributeValueTemplate.cpp b/extensions/transformiix/source/xpath/AttributeValueTemplate.cpp
index 5b16b49e33e..ae04266b9e9 100644
--- a/extensions/transformiix/source/xpath/AttributeValueTemplate.cpp
+++ b/extensions/transformiix/source/xpath/AttributeValueTemplate.cpp
@@ -31,6 +31,11 @@
 #include "ExprResult.h"
 #include "txIXPathContext.h"
 
+/**
+ * Create a new AttributeValueTemplate
+**/
+AttributeValueTemplate::AttributeValueTemplate() {};
+
 /**
  * Default destructor
 **/
@@ -44,15 +49,8 @@ AttributeValueTemplate::~AttributeValueTemplate() {
 /**
  * Adds the given Expr to this AttributeValueTemplate
 **/
-nsresult
-AttributeValueTemplate::addExpr(nsAutoPtr<Expr> aExpr)
-{
-    nsresult rv = expressions.add(aExpr);
-    NS_ENSURE_SUCCESS(rv, rv);
-
-    aExpr.forget();
-
-    return NS_OK;
+void AttributeValueTemplate::addExpr(Expr* expr) {
+    if (expr) expressions.add(expr);
 } //-- addExpr
 
 /**
diff --git a/extensions/transformiix/source/xpath/BooleanExpr.cpp b/extensions/transformiix/source/xpath/BooleanExpr.cpp
index 836a7b3253f..a6071f6474f 100644
--- a/extensions/transformiix/source/xpath/BooleanExpr.cpp
+++ b/extensions/transformiix/source/xpath/BooleanExpr.cpp
@@ -41,12 +41,15 @@
 /**
  * Creates a new BooleanExpr using the given operator
 **/
-BooleanExpr::BooleanExpr(nsAutoPtr<Expr> aLeftExpr,
-                         nsAutoPtr<Expr> aRightExpr, short aOp)
-    : op(aOp),
-      leftExpr(aLeftExpr),
-      rightExpr(aRightExpr)
-{
+BooleanExpr::BooleanExpr(Expr* leftExpr, Expr* rightExpr, short op) {
+    this->op = op;
+    this->leftExpr = leftExpr;
+    this->rightExpr = rightExpr;
+} //-- BooleanExpr
+
+BooleanExpr::~BooleanExpr() {
+    delete leftExpr;
+    delete rightExpr;
 } //-- ~BooleanExpr
 
 /**
diff --git a/extensions/transformiix/source/xpath/Expr.h b/extensions/transformiix/source/xpath/Expr.h
index 23b517c26a1..e703b12276a 100644
--- a/extensions/transformiix/source/xpath/Expr.h
+++ b/extensions/transformiix/source/xpath/Expr.h
@@ -119,7 +119,7 @@ public:
      * Adds the given parameter to this FunctionCall's parameter list
      * @param expr the Expr to add to this FunctionCall's parameter list
     **/
-    nsresult addParam(nsAutoPtr<Expr> aExpr);
+    nsresult addParam(Expr* aExpr);
 
     /**
      * Check if the number of parameters falls within a range.
@@ -140,6 +140,8 @@ protected:
 
     txList params;
 
+    FunctionCall();
+
     /*
      * Evaluates the given Expression and converts its result to a String.
      * The value is appended to the given destination String
@@ -177,12 +179,15 @@ protected:
 class AttributeValueTemplate: public Expr {
 
 public:
+
+    AttributeValueTemplate();
+
     virtual ~AttributeValueTemplate();
 
     /**
      * Adds the given Expr to this AttributeValueTemplate
     **/
-    nsresult addExpr(nsAutoPtr<Expr> expr);
+    void addExpr(Expr* expr);
 
     TX_DECL_EXPR;
 
@@ -227,8 +232,11 @@ public:
     txNameTest(nsIAtom* aPrefix, nsIAtom* aLocalName, PRInt32 aNSID,
                Node::NodeType aNodeType);
 
+    ~txNameTest();
+
     TX_DECL_NODE_TEST;
 
+private:
     nsCOMPtr<nsIAtom> mPrefix;
     nsCOMPtr<nsIAtom> mLocalName;
     PRInt32 mNamespace;
@@ -253,6 +261,8 @@ public:
      */
     txNodeTypeTest(NodeType aNodeType);
 
+    ~txNodeTypeTest();
+
     /*
      * Sets the name of the node to match. Only availible for pi nodes
      */
@@ -272,6 +282,11 @@ private:
 class PredicateList  {
 
 public:
+
+    /**
+     * Creates a new PredicateList
+    **/
+    PredicateList();
     /**
      * Destructor, will delete all Expressions in the list, so remove
      * any you may need
@@ -282,7 +297,7 @@ public:
      * Adds the given Expr to the list
      * @param expr the Expr to add to the list
     **/
-    nsresult add(nsAutoPtr<Expr> aExpr);
+    void add(Expr* expr);
 
     nsresult evaluatePredicates(NodeSet* aNodes, txIMatchContext* aContext);
 
@@ -358,12 +373,17 @@ public:
      * Creates a new FilterExpr using the given Expr
      * @param expr the Expr to use for evaluation
     **/
-    FilterExpr(nsAutoPtr<Expr> aExpr);
+    FilterExpr(Expr* aExpr);
+
+    /**
+     * Destructor, will delete all predicates and the given Expr
+    **/
+    virtual ~FilterExpr();
 
     TX_DECL_EXPR;
 
 private:
-    nsAutoPtr<Expr> expr;
+    Expr* expr;
 
 }; //-- FilterExpr
 
@@ -393,15 +413,15 @@ public:
     //-- LF, changed from static const short to enum
     enum _AdditiveExprType { ADDITION = 1, SUBTRACTION };
 
-     AdditiveExpr(nsAutoPtr<Expr> aLeftExpr, nsAutoPtr<Expr> aRightExpr,
-                  short aOp);
+     AdditiveExpr(Expr* leftExpr, Expr* rightExpr, short op);
+     ~AdditiveExpr();
 
     TX_DECL_EXPR;
 
 private:
     short op;
-    nsAutoPtr<Expr> leftExpr;
-    nsAutoPtr<Expr> rightExpr;
+    Expr* leftExpr;
+    Expr* rightExpr;
 }; //-- AdditiveExpr
 
 /**
@@ -411,12 +431,13 @@ class UnaryExpr : public Expr {
 
 public:
 
-    UnaryExpr(nsAutoPtr<Expr> aExpr);
+     UnaryExpr(Expr* expr);
+     ~UnaryExpr();
 
     TX_DECL_EXPR;
 
 private:
-    nsAutoPtr<Expr> expr;
+    Expr* expr;
 }; //-- UnaryExpr
 
 /**
@@ -430,15 +451,15 @@ public:
     //-- BooleanExpr Types
     enum _BooleanExprType { AND = 1, OR };
 
-    BooleanExpr(nsAutoPtr<Expr> aLeftExpr, nsAutoPtr<Expr> aRightExpr,
-                short aOp);
+     BooleanExpr(Expr* leftExpr, Expr* rightExpr, short op);
+     ~BooleanExpr();
 
     TX_DECL_EXPR;
 
 private:
     short op;
-    nsAutoPtr<Expr> leftExpr;
-    nsAutoPtr<Expr> rightExpr;
+    Expr* leftExpr;
+    Expr* rightExpr;
 }; //-- BooleanExpr
 
 /**
@@ -457,15 +478,15 @@ public:
     //-- LF, changed from static const short to enum
     enum _MultiplicativeExprType { DIVIDE = 1, MULTIPLY, MODULUS };
 
-    MultiplicativeExpr(nsAutoPtr<Expr> aLeftExpr, nsAutoPtr<Expr> aRightExpr,
-                       short aOp);
+     MultiplicativeExpr(Expr* leftExpr, Expr* rightExpr, short op);
+     ~MultiplicativeExpr();
 
     TX_DECL_EXPR;
 
 private:
     short op;
-    nsAutoPtr<Expr> leftExpr;
-    nsAutoPtr<Expr> rightExpr;
+    Expr* leftExpr;
+    Expr* rightExpr;
 }; //-- MultiplicativeExpr
 
 /**
@@ -490,8 +511,7 @@ public:
         GREATER_OR_EQUAL
     };
 
-    RelationalExpr(nsAutoPtr<Expr> aLeftExpr, nsAutoPtr<Expr> aRightExpr,
-                   RelationalExprType aOp);
+    RelationalExpr(Expr* aLeftExpr, Expr* aRightExpr, RelationalExprType aOp);
 
     TX_DECL_EXPR;
 
@@ -513,6 +533,7 @@ class VariableRefExpr : public Expr {
 public:
 
     VariableRefExpr(nsIAtom* aPrefix, nsIAtom* aLocalName, PRInt32 aNSID);
+    ~VariableRefExpr();
 
     TX_DECL_EXPR;
 
@@ -534,6 +555,11 @@ public:
     //-- LF, changed from static const short to enum
     enum PathOperator { RELATIVE_OP, DESCENDANT_OP };
 
+    /**
+     * Creates a new PathExpr
+    **/
+    PathExpr();
+
     /**
      * Destructor, will delete all Expressions
     **/
@@ -543,13 +569,13 @@ public:
      * Adds the Expr to this PathExpr
      * @param expr the Expr to add to this PathExpr
     **/
-    nsresult addExpr(nsAutoPtr<Expr> aExpr, PathOperator aPathOp);
+    void addExpr(Expr* expr, PathOperator pathOp);
 
     TX_DECL_EXPR;
 
 private:
     struct PathExprItem {
-        nsAutoPtr<Expr> expr;
+        Expr* expr;
         PathOperator pathOp;
     };
 
@@ -593,6 +619,11 @@ class UnionExpr : public Expr {
 
 public:
 
+    /**
+     * Creates a new UnionExpr
+    **/
+    UnionExpr();
+
     /**
      * Destructor, will delete all Path Expressions
     **/
@@ -602,7 +633,7 @@ public:
      * Adds the PathExpr to this UnionExpr
      * @param expr the Expr to add to this UnionExpr
     **/
-    nsresult addExpr(nsAutoPtr<Expr> aExpr);
+    void addExpr(Expr* expr);
 
     TX_DECL_EXPR;
 
diff --git a/extensions/transformiix/source/xpath/FilterExpr.cpp b/extensions/transformiix/source/xpath/FilterExpr.cpp
index a0f33a26660..9f77dc58056 100644
--- a/extensions/transformiix/source/xpath/FilterExpr.cpp
+++ b/extensions/transformiix/source/xpath/FilterExpr.cpp
@@ -35,11 +35,17 @@
  * Creates a new FilterExpr using the given Expr
  * @param expr the Expr to use for evaluation
 **/
-FilterExpr::FilterExpr(nsAutoPtr<Expr> aExpr)
-    : expr(aExpr)
-{
+FilterExpr::FilterExpr(Expr* expr) : PredicateList() {
+    this->expr = expr;
 } //-- FilterExpr
 
+/**
+ * Destroys this FilterExpr, all predicates and the expr will be deleted
+**/
+FilterExpr::~FilterExpr() {
+    delete expr;
+} //-- ~FilterExpr
+
   //-----------------------------/
  //- Virtual methods from Expr -/
 //-----------------------------/
diff --git a/extensions/transformiix/source/xpath/FunctionCall.cpp b/extensions/transformiix/source/xpath/FunctionCall.cpp
index f5f4714fa31..f8d75c52fae 100644
--- a/extensions/transformiix/source/xpath/FunctionCall.cpp
+++ b/extensions/transformiix/source/xpath/FunctionCall.cpp
@@ -33,6 +33,10 @@
  * This class represents a FunctionCall as defined by the XSL Working Draft
 **/
 
+FunctionCall::FunctionCall()
+{
+}
+
 /**
  * Destructor
 **/
@@ -52,14 +56,10 @@ FunctionCall::~FunctionCall()
  * Adds the given parameter to this FunctionCall's parameter list
  * @param expr the Expr to add to this FunctionCall's parameter list
 **/
-nsresult
-FunctionCall::addParam(nsAutoPtr<Expr> aExpr)
+nsresult FunctionCall::addParam(Expr* aExpr)
 {
-    nsresult rv = params.add(aExpr);
-    NS_ENSURE_SUCCESS(rv, rv);
-
-    aExpr.forget();
-    
+    if (aExpr)
+        params.add(aExpr);
     return NS_OK;
 } //-- addParam
 
diff --git a/extensions/transformiix/source/xpath/MultiplicativeExpr.cpp b/extensions/transformiix/source/xpath/MultiplicativeExpr.cpp
index 7118bcf7b6c..1618a77c4c3 100644
--- a/extensions/transformiix/source/xpath/MultiplicativeExpr.cpp
+++ b/extensions/transformiix/source/xpath/MultiplicativeExpr.cpp
@@ -44,13 +44,16 @@
 /**
  * Creates a new MultiplicativeExpr using the given operator
 **/
-MultiplicativeExpr::MultiplicativeExpr(nsAutoPtr<Expr> aLeftExpr,
-                                       nsAutoPtr<Expr> aRightExpr, short aOp)
-    : op(aOp),
-      leftExpr(aLeftExpr),
-      rightExpr(aRightExpr)
-{
-}
+MultiplicativeExpr::MultiplicativeExpr(Expr* leftExpr, Expr* rightExpr, short op) {
+    this->op = op;
+    this->leftExpr = leftExpr;
+    this->rightExpr = rightExpr;
+} //-- MultiplicativeExpr
+
+MultiplicativeExpr::~MultiplicativeExpr() {
+    delete leftExpr;
+    delete rightExpr;
+} //-- ~MultiplicativeExpr
 
 /**
  * Evaluates this Expr based on the given context node and processor state
diff --git a/extensions/transformiix/source/xpath/PathExpr.cpp b/extensions/transformiix/source/xpath/PathExpr.cpp
index faca90b4103..27c6fc538d6 100644
--- a/extensions/transformiix/source/xpath/PathExpr.cpp
+++ b/extensions/transformiix/source/xpath/PathExpr.cpp
@@ -41,6 +41,14 @@
  //- PathExpr -/
 //------------/
 
+/**
+ * Creates a new PathExpr
+**/
+PathExpr::PathExpr()
+{
+    //-- do nothing
+}
+
 /**
  * Destructor, will delete all Expressions
 **/
@@ -49,6 +57,7 @@ PathExpr::~PathExpr()
     txListIterator iter(&expressions);
     while (iter.hasNext()) {
          PathExprItem* pxi = (PathExprItem*)iter.next();
+         delete pxi->expr;
          delete pxi;
     }
 } //-- ~PathExpr
@@ -57,20 +66,21 @@ PathExpr::~PathExpr()
  * Adds the Expr to this PathExpr
  * @param expr the Expr to add to this PathExpr
 **/
-nsresult
-PathExpr::addExpr(nsAutoPtr<Expr> aExpr, PathOperator aPathOp)
+void PathExpr::addExpr(Expr* expr, PathOperator pathOp)
 {
-    NS_ASSERTION(expressions.getLength() > 0 || aPathOp == RELATIVE_OP,
+    NS_ASSERTION(expressions.getLength() > 0 || pathOp == RELATIVE_OP,
                  "First step has to be relative in PathExpr");
-    nsAutoPtr<PathExprItem> pxi(new PathExprItem);
-    NS_ENSURE_TRUE(pxi, NS_ERROR_OUT_OF_MEMORY);
-
-    pxi->expr = aExpr;
-    pxi->pathOp = aPathOp;
-    nsresult rv = expressions.add(pxi);
-    NS_ENSURE_SUCCESS(rv, rv);
-    
-    return NS_OK;
+    if (expr) {
+        PathExprItem* pxi = new PathExprItem;
+        if (!pxi) {
+            // XXX ErrorReport: out of memory
+            NS_ASSERTION(0, "out of memory");
+            return;
+        }
+        pxi->expr = expr;
+        pxi->pathOp = pathOp;
+        expressions.add(pxi);
+    }
 } //-- addPattenExpr
 
     //-----------------------------/
diff --git a/extensions/transformiix/source/xpath/PredicateList.cpp b/extensions/transformiix/source/xpath/PredicateList.cpp
index 00c02598349..51e92963e95 100644
--- a/extensions/transformiix/source/xpath/PredicateList.cpp
+++ b/extensions/transformiix/source/xpath/PredicateList.cpp
@@ -32,6 +32,10 @@
  * for use with Step and Filter Expressions
  */
 
+PredicateList::PredicateList()
+{
+} // PredicateList
+
 /*
  * Destructor, will delete all Expressions in the list
  */
@@ -47,15 +51,9 @@ PredicateList::~PredicateList()
  * Adds the given Expr to the list
  * @param expr the Expr to add to the list
  */
-nsresult
-PredicateList::add(nsAutoPtr<Expr> aExpr)
+void PredicateList::add(Expr* expr)
 {
-    nsresult rv = predicates.add(aExpr);
-    NS_ENSURE_SUCCESS(rv, rv);
-    
-    aExpr.forget();
-    
-    return NS_OK;
+    predicates.add(expr);
 } // add
 
 nsresult
diff --git a/extensions/transformiix/source/xpath/RelationalExpr.cpp b/extensions/transformiix/source/xpath/RelationalExpr.cpp
index ecad2ea00c6..1f45fbdf7a2 100644
--- a/extensions/transformiix/source/xpath/RelationalExpr.cpp
+++ b/extensions/transformiix/source/xpath/RelationalExpr.cpp
@@ -32,12 +32,9 @@
 #include "XMLDOMUtils.h"
 #include "txIXPathContext.h"
 
-RelationalExpr::RelationalExpr(nsAutoPtr<Expr> aLeftExpr,
-                               nsAutoPtr<Expr> aRightExpr,
+RelationalExpr::RelationalExpr(Expr* aLeftExpr, Expr* aRightExpr,
                                RelationalExprType aOp)
-    : mLeftExpr(aLeftExpr),
-      mRightExpr(aRightExpr),
-      mOp(aOp)
+    : mLeftExpr(aLeftExpr), mRightExpr(aRightExpr), mOp(aOp)
 {
 }
 
diff --git a/extensions/transformiix/source/xpath/UnaryExpr.cpp b/extensions/transformiix/source/xpath/UnaryExpr.cpp
index 0c035fd93e2..2b659847233 100644
--- a/extensions/transformiix/source/xpath/UnaryExpr.cpp
+++ b/extensions/transformiix/source/xpath/UnaryExpr.cpp
@@ -27,9 +27,14 @@
 #include "ExprResult.h"
 #include "txIXPathContext.h"
 
-UnaryExpr::UnaryExpr(nsAutoPtr<Expr> aExpr)
-    : expr(aExpr)
+UnaryExpr::UnaryExpr(Expr* expr)
 {
+    this->expr = expr;
+}
+
+UnaryExpr::~UnaryExpr()
+{
+    delete expr;
 }
 
 /*
diff --git a/extensions/transformiix/source/xpath/UnionExpr.cpp b/extensions/transformiix/source/xpath/UnionExpr.cpp
index 11d37c93bc5..12153e62529 100644
--- a/extensions/transformiix/source/xpath/UnionExpr.cpp
+++ b/extensions/transformiix/source/xpath/UnionExpr.cpp
@@ -32,6 +32,13 @@
 //-------------/
 
 
+/**
+ * Creates a new UnionExpr
+**/
+UnionExpr::UnionExpr() {
+    //-- do nothing
+}
+
 /**
  * Destructor, will delete all Path Expressions
 **/
@@ -46,15 +53,9 @@ UnionExpr::~UnionExpr() {
  * Adds the Expr to this UnionExpr
  * @param expr the Expr to add to this UnionExpr
 **/
-nsresult
-UnionExpr::addExpr(nsAutoPtr<Expr> aExpr)
-{
-    nsresult rv = expressions.add(aExpr);
-    NS_ENSURE_SUCCESS(rv, rv);
-    
-    aExpr.forget();
-    
-    return NS_OK;
+void UnionExpr::addExpr(Expr* expr) {
+    if (expr)
+      expressions.add(expr);
 } //-- addExpr
 
     //-----------------------------/
diff --git a/extensions/transformiix/source/xpath/VariableRefExpr.cpp b/extensions/transformiix/source/xpath/VariableRefExpr.cpp
index 1e9cea6bddb..828f9da1974 100644
--- a/extensions/transformiix/source/xpath/VariableRefExpr.cpp
+++ b/extensions/transformiix/source/xpath/VariableRefExpr.cpp
@@ -44,6 +44,13 @@ VariableRefExpr::VariableRefExpr(nsIAtom* aPrefix, nsIAtom* aLocalName,
         mPrefix = 0;
 }
 
+/*
+ * Release the local name atom
+ */
+VariableRefExpr::~VariableRefExpr()
+{
+}
+
 /**
  * Evaluates this Expr based on the given context node and processor state
  * @param context the context node for evaluation of this Expr
diff --git a/extensions/transformiix/source/xpath/txNameTest.cpp b/extensions/transformiix/source/xpath/txNameTest.cpp
index c54c73adf65..bff91f825b3 100644
--- a/extensions/transformiix/source/xpath/txNameTest.cpp
+++ b/extensions/transformiix/source/xpath/txNameTest.cpp
@@ -37,6 +37,10 @@ txNameTest::txNameTest(nsIAtom* aPrefix, nsIAtom* aLocalName, PRInt32 aNSID,
     NS_ASSERTION(aLocalName, "txNameTest without a local name?");
 }
 
+txNameTest::~txNameTest()
+{
+}
+
 /*
  * Determines whether this txNodeTest matches the given node
  */
diff --git a/extensions/transformiix/source/xpath/txNodeTypeTest.cpp b/extensions/transformiix/source/xpath/txNodeTypeTest.cpp
index 06e39d39258..76e8fd5132b 100644
--- a/extensions/transformiix/source/xpath/txNodeTypeTest.cpp
+++ b/extensions/transformiix/source/xpath/txNodeTypeTest.cpp
@@ -35,6 +35,10 @@ txNodeTypeTest::txNodeTypeTest(NodeType aNodeType)
 {
 }
 
+txNodeTypeTest::~txNodeTypeTest()
+{
+}
+
 void txNodeTypeTest::setNodeName(const nsAString& aName)
 {
     mNodeName = do_GetAtom(aName);
diff --git a/extensions/transformiix/source/xslt/txXSLTPatterns.cpp b/extensions/transformiix/source/xslt/txXSLTPatterns.cpp
index 4f9ee84a55c..62067d1be0e 100644
--- a/extensions/transformiix/source/xslt/txXSLTPatterns.cpp
+++ b/extensions/transformiix/source/xslt/txXSLTPatterns.cpp
@@ -459,6 +459,11 @@ void txKeyPattern::toString(nsAString& aDest)
  * a txPattern to hold the NodeTest and the Predicates of a StepPattern
  */
 
+txStepPattern::~txStepPattern()
+{
+    delete mNodeTest;
+}
+
 MBool txStepPattern::matches(Node* aNode, txIMatchContext* aContext)
 {
     NS_ASSERTION(mNodeTest && aNode, "Internal error");
diff --git a/extensions/transformiix/source/xslt/txXSLTPatterns.h b/extensions/transformiix/source/xslt/txXSLTPatterns.h
index 56e4f5e013f..3b06d7b37dc 100644
--- a/extensions/transformiix/source/xslt/txXSLTPatterns.h
+++ b/extensions/transformiix/source/xslt/txXSLTPatterns.h
@@ -131,7 +131,12 @@ private:
         {
         }
 
-        nsAutoPtr<txPattern> pattern;
+        ~Step()
+        {
+            delete pattern;
+        }
+
+        txPattern* pattern;
         MBool isChild;
     };
 
@@ -193,9 +198,12 @@ public:
     {
     }
 
+    ~txStepPattern();
+
     TX_DECL_PATTERN;
 
-    nsAutoPtr<txNodeTest> mNodeTest;
+private:
+    txNodeTest* mNodeTest;
     MBool mIsAttr;
 };