diff --git a/pvDataApp/factory/PVStructure.cpp b/pvDataApp/factory/PVStructure.cpp
index bc8872d..e266737 100644
--- a/pvDataApp/factory/PVStructure.cpp
+++ b/pvDataApp/factory/PVStructure.cpp
@@ -192,6 +192,7 @@ namespace epics { namespace pvData {
         }
         Structure *structure = const_cast<Structure *>(getStructure().get());
         structure->removeField(indRemove);
+        delete origPVFields[indRemove];
         delete[] pImpl->pvFields;
         pImpl->pvFields = newPVFields;
         pImpl->numberFields = newLength;
diff --git a/testApp/pv/Makefile b/testApp/pv/Makefile
index b1d5bd9..3d5489c 100644
--- a/testApp/pv/Makefile
+++ b/testApp/pv/Makefile
@@ -2,9 +2,9 @@ TOP=../..
 
 include $(TOP)/configure/CONFIG
 
-#PROD_HOST += temp
-#temp_SRCS += temp.cpp
-#temp_LIBS += pvData Com
+PROD_HOST += temp
+temp_SRCS += temp.cpp
+temp_LIBS += pvData Com
 
 PROD_HOST += testPVAppend
 testPVAppend_SRCS += testPVAppend.cpp
diff --git a/testApp/pv/temp.cpp b/testApp/pv/temp.cpp
index cb9cc62..3cd1667 100644
--- a/testApp/pv/temp.cpp
+++ b/testApp/pv/temp.cpp
@@ -35,11 +35,32 @@ static String alarmTimeStamp("alarm,timeStamp");
 static String alarmTimeStampValueAlarm("alarm,timeStamp,valueAlarm");
 static String allProperties("alarm,timeStamp,display,control,valueAlarm");
 
+static void testAppendSimple(FILE * fd)
+{
+    FieldConstPtrArray fields = new FieldConstPtr[0];
+    PVStructure *pvParent = pvDataCreate->createPVStructure(
+        0,String("request"),0,fields);
+    PVString* pvStringField = static_cast<PVString*>(
+        pvDataCreate->createPVScalar(pvParent, "fieldList", pvString));
+    pvStringField->put(String("value,timeStamp"));
+    pvParent->appendPVField(pvStringField);
+    builder.clear();
+    pvParent->toString(&builder);
+    fprintf(fd,"%s\n",builder.c_str());
+    pvStringField = static_cast<PVString*>(
+        pvDataCreate->createPVScalar(pvParent, "extra", pvString));
+    pvStringField->put(String("junk"));
+    pvParent->appendPVField(pvStringField);
+    builder.clear();
+    pvParent->toString(&builder);
+    fprintf(fd,"%s\n",builder.c_str());
+    delete pvParent;
+}
 
 static void testAppendMore(FILE * fd)
 {
     PVStructure* pvStructure = pvDataCreate->createPVStructure(
-        0,"top", 0);
+        0,"parent", 0);
     PVStructure* pvChild1 = pvDataCreate->createPVStructure(
           pvStructure, "child1", 0);
     PVString *pvStringField = static_cast<PVString*>(
@@ -57,8 +78,51 @@ static void testAppendMore(FILE * fd)
     builder.clear();
     pvStructure->toString(&builder);
     fprintf(fd,"%s\n",builder.c_str());
-    PVField *pvField = pvStructure->getSubField(String("child1.value"));
-    pvField->message(String("test message"),infoMessage);
+    delete pvStructure;
+}
+
+static void append2(PVStructure* pvStructure,
+    const char *oneName,const char *twoName,
+    const char *oneValue,const char *twoValue)
+{
+     PVField* array[2];
+     PVString *pvStringField = static_cast<PVString*>(
+        pvDataCreate->createPVScalar(0,oneName, pvString));
+     pvStringField->put(oneValue);
+     array[0] = pvStringField;
+     pvStringField = static_cast<PVString*>(
+        pvDataCreate->createPVScalar(0,twoName, pvString));
+     pvStringField->put(twoValue);
+     array[1] = pvStringField;
+     pvStructure->appendPVFields(2,array);
+}
+static void testAppends(FILE * fd)
+{
+    PVField** array = new PVField*[2];
+    PVStructure* pvChild = pvDataCreate->createPVStructure(
+          0, "child1", 0);
+    append2(pvChild,"Joe","Mary","Good Guy","Good Girl");
+    array[0] = pvChild;
+    pvChild = pvDataCreate->createPVStructure(
+          0, "child2", 0);
+    append2(pvChild,"Bill","Jane","Bad Guy","Bad Girl");
+    array[1] = pvChild;
+    PVStructure* pvStructure = pvDataCreate->createPVStructure(
+        0,"parent", 2,array);
+    builder.clear();
+    pvStructure->toString(&builder);
+    fprintf(fd,"%s\n",builder.c_str());
+    PVField *pvField = pvStructure->getSubField("child2.Bill");
+    assert(pvField!=0);
+    bool ok = pvField->renameField("Joe");
+    assert(ok);
+    builder.clear();
+    pvStructure->toString(&builder);
+    fprintf(fd,"%s\n",builder.c_str());
+    pvField->getParent()->removePVField("Joe");
+    builder.clear();
+    pvStructure->toString(&builder);
+    fprintf(fd,"%s\n",builder.c_str());
     delete pvStructure;
 }
 
@@ -75,7 +139,9 @@ int main(int argc,char *argv[])
     standardField = getStandardField();
     standardPVField = getStandardPVField();
     convert = getConvert();
-    testAppendMore(fd);
+    //testAppendSimple(fd);
+    //testAppendMore(fd);
+    testAppends(fd);
     epicsExitCallAtExits();
     CDRMonitor::get().show(fd);
     return(0);
diff --git a/testApp/pv/testPVAppend.cpp b/testApp/pv/testPVAppend.cpp
index 50e716e..9626f09 100644
--- a/testApp/pv/testPVAppend.cpp
+++ b/testApp/pv/testPVAppend.cpp
@@ -86,30 +86,31 @@ static void append2(PVStructure* pvStructure,
     const char *oneValue,const char *twoValue)
 {
      PVField* array[2];
+    // make parent null to test setParent
      PVString *pvStringField = static_cast<PVString*>(
-        pvDataCreate->createPVScalar(pvStructure,oneName, pvString));
+        pvDataCreate->createPVScalar(0,oneName, pvString));
      pvStringField->put(oneValue);
      array[0] = pvStringField;
      pvStringField = static_cast<PVString*>(
-        pvDataCreate->createPVScalar(pvStructure,twoName, pvString));
+        pvDataCreate->createPVScalar(0,twoName, pvString));
      pvStringField->put(twoValue);
      array[1] = pvStringField;
      pvStructure->appendPVFields(2,array);
 }
 static void testAppends(FILE * fd)
 {
-    PVField* array[2];
-    PVStructure* pvStructure = pvDataCreate->createPVStructure(
-        0,"parent", 0);
+    PVField** array = new PVField*[2];
+    // make parent null to test setParent
     PVStructure* pvChild = pvDataCreate->createPVStructure(
-          pvStructure, "child1", 0);
+          0, "child1", 0);
     append2(pvChild,"Joe","Mary","Good Guy","Good Girl");
     array[0] = pvChild;
     pvChild = pvDataCreate->createPVStructure(
-          pvStructure, "child2", 0);
+          0, "child2", 0);
     append2(pvChild,"Bill","Jane","Bad Guy","Bad Girl");
     array[1] = pvChild;
-    pvStructure->appendPVFields(2,array);
+    PVStructure* pvStructure = pvDataCreate->createPVStructure(
+        0,"parent", 2,array);
     builder.clear();
     pvStructure->toString(&builder);
     fprintf(fd,"%s\n",builder.c_str());