diff --git a/ZCppMain/ZtCObjList.H b/ZCppMain/ZtCObjList.H
index e87035b..f7e0d1d 100644
--- a/ZCppMain/ZtCObjList.H
+++ b/ZCppMain/ZtCObjList.H
@@ -578,9 +578,10 @@ namespace ZNsMain
                 {
                     if(ml_UseSize<1) return ;
 
-                    ZCLink* VP_DelLink = mp_NoUseHead;
+                    ZCLink*  VP_DelLink = mp_NoUseHead;
+                    TypeSize VI_UseSize = ml_UseSize  ;
 
-                    do /*+++++++++++++++++++++++++++*/
+                    do /*++++++++++++++++++++++++++++*/
                     {
                         mp_NoUseHead =
                         mp_NoUseHead->GetNextPtr() ;
@@ -589,7 +590,7 @@ namespace ZNsMain
 
                         VP_DelLink = mp_NoUseHead  ;
                     }
-                    while(--ml_UseSize>0); /*+++++++*/
+                    while(--VI_UseSize>0); /*++++++++*/
 
                     ml_AllSize  -= ml_UseSize;
                     ml_UseSize   = 0         ;
diff --git a/ZCppMain/ZtCSimList.H b/ZCppMain/ZtCSimList.H
index 19d1966..3cb014a 100644
--- a/ZCppMain/ZtCSimList.H
+++ b/ZCppMain/ZtCSimList.H
@@ -579,9 +579,10 @@ namespace ZNsMain
                 {
                     if(ml_UseSize<1) return ;
 
-                    ZCLink* VP_DelLink = mp_NoUseHead;
+                    ZCLink*  VP_DelLink = mp_NoUseHead;
+                    TypeSize VI_UseSize = ml_UseSize  ;
 
-                    do /*+++++++++++++++++++++++++++*/
+                    do /*++++++++++++++++++++++++++++*/
                     {
                         mp_NoUseHead =
                         mp_NoUseHead->GetNextPtr() ;
@@ -590,7 +591,7 @@ namespace ZNsMain
 
                         VP_DelLink = mp_NoUseHead  ;
                     }
-                    while(--ml_UseSize>0); /*+++++++*/
+                    while(--VI_UseSize>0); /*++++++++*/
 
                     ml_AllSize  -= ml_UseSize;
                     ml_UseSize   = 0         ;
diff --git a/ZCppMainTest/ZtCObjList_000.cpp b/ZCppMainTest/ZtCObjList_000.cpp
index 3c24878..b488134 100644
--- a/ZCppMainTest/ZtCObjList_000.cpp
+++ b/ZCppMainTest/ZtCObjList_000.cpp
@@ -187,6 +187,28 @@ namespace ZNsMain
                 cout<<"# list10 IterElement after list10 = list11"<<endl;
                     VO_ListOfStr10.IterElement(&ShowDataInNode);
 
+                cout<<"# list10 size     : " <<VO_ListOfStr10.size        ()<<endl;
+                cout<<"# list11 size     : " <<VO_ListOfStr11.size        ()<<endl;
+                cout<<"# list10 free size: " <<VO_ListOfStr10.GetFreeSize ()<<endl;
+                cout<<"# list11 free size: " <<VO_ListOfStr11.GetFreeSize ()<<endl;
+                cout<<"# list10 capacity : " <<VO_ListOfStr10.capacity    ()<<endl;
+                cout<<"# list11 capacity : " <<VO_ListOfStr11.capacity    ()<<endl;
+
+
+                VO_ListOfStr11.AddHead(VO_CStringBase("list11 add99"));
+                VO_ListOfStr10 = VO_ListOfStr11 ;
+
+                cout<<"# list10 IterElement after list11.addhead, list10 = list11"<<endl;
+                    VO_ListOfStr10.IterElement(&ShowDataInNode);
+
+
+                cout<<"# list10 size     : " <<VO_ListOfStr10.size        ()<<endl;
+                cout<<"# list11 size     : " <<VO_ListOfStr11.size        ()<<endl;
+                cout<<"# list10 free size: " <<VO_ListOfStr10.GetFreeSize ()<<endl;
+                cout<<"# list11 free size: " <<VO_ListOfStr11.GetFreeSize ()<<endl;
+                cout<<"# list10 capacity : " <<VO_ListOfStr10.capacity    ()<<endl;
+                cout<<"# list11 capacity : " <<VO_ListOfStr11.capacity    ()<<endl;
+
 
                 return 0;
             }/*