diff --git a/src/get_malloc_id.awk b/src/get_malloc_id.awk
index 27d4bc3b..8a99d702 100755
--- a/src/get_malloc_id.awk
+++ b/src/get_malloc_id.awk
@@ -61,4 +61,8 @@ xinit.c \
                                   print
   } else  print
   prev = $1
-}'
+}
+END{
+  print ">>>>>>>>>>> FREE  >>>>>>>>> " n " ..."
+}
+'
diff --git a/src/netlist.c b/src/netlist.c
index 3e201b4d..22b05451 100644
--- a/src/netlist.c
+++ b/src/netlist.c
@@ -1011,8 +1011,8 @@ static void name_pass_through_nets(int for_netlist)
   int lev = 1;
   
   dbg(1, "name_pass_through_nets() start...\n");
-  pt_symbol = my_calloc(973, xctx->symbols, sizeof(int));
-  symtable = my_calloc(1581,  xctx->symbols, sizeof(int));
+  pt_symbol = my_calloc(0, xctx->symbols, sizeof(int));
+  symtable = my_calloc(0,  xctx->symbols, sizeof(int));
   /* we can not loop over xctx->symbols since we keep symbols of parent circuit while netlisting */
   for(i = 0; i < xctx->instances; i++) {
     k = xctx->inst[i].ptr;
@@ -1034,9 +1034,9 @@ static void name_pass_through_nets(int for_netlist)
     str_hash_free(&table);
     if(pt_symbol[k]) dbg(1, "duplicated pins: %s\n", xctx->sym[i].name);
   }
-  my_free(1582, &symtable);
+  my_free(0, &symtable);
   if(!there_are_pt) { /* nothing to do: no pass through symbols */
-    my_free(1573, &pt_symbol);
+    my_free(0, &pt_symbol);
     return;
   }
   do { /* keep looping until propagation of nets occurs */
@@ -1047,7 +1047,7 @@ static void name_pass_through_nets(int for_netlist)
       if(inst[i].ptr<0) continue;
       if(!pt_symbol[ inst[i].ptr ]) continue;
       str_hash_init(&table, 37);
-      my_strdup(1565, &type, (inst[i].ptr + xctx->sym)->type);
+      my_strdup(0, &type, (inst[i].ptr + xctx->sym)->type);
       if (type && !IS_LABEL_OR_PIN(type) ) {
         if ((rects = (inst[i].ptr+ xctx->sym)->rects[PINLAYER]) > 0) {
           /* 1st loop: hash symbol pins that are attached to named nets/pins/labels */
@@ -1106,7 +1106,7 @@ static void name_pass_through_nets(int for_netlist)
                 iptr=iptr->next;
                 continue;
               }
-              my_strdup(1566, &type2, (inst[iptr->n].ptr + xctx->sym)->type);
+              my_strdup(0, &type2, (inst[iptr->n].ptr + xctx->sym)->type);
               if (!type2 || !IS_LABEL_OR_PIN(type2) ) {
                 iptr=iptr->next;
                 continue;
@@ -1171,8 +1171,8 @@ static void name_pass_through_nets(int for_netlist)
                   dbg(lev, "inst %s pin %s(%s) --> net %s\n",
                       inst[i].instname, entry->token, entry->value, 
                       xctx->wire[wptr->n].node ? xctx->wire[wptr->n].node : "<NULL>");
-                  my_strdup(1568,  &xctx->wire[wptr->n].node, entry->value);
-                  my_strdup(1569, &xctx->wire[wptr->n].prop_ptr,
+                  my_strdup(0,  &xctx->wire[wptr->n].node, entry->value);
+                  my_strdup(0, &xctx->wire[wptr->n].prop_ptr,
                   subst_token(xctx->wire[wptr->n].prop_ptr, "lab", entry->value));
                   wirecheck(wptr->n);
                   changed = 1;
@@ -1186,9 +1186,9 @@ static void name_pass_through_nets(int for_netlist)
       str_hash_free(&table);
     } /* for (i=0;i<instances;i++) */
   } while(changed);
-  my_free(1570, &type);
-  my_free(1571, &type2);
-  my_free(1572, &pt_symbol);
+  my_free(0, &type);
+  my_free(0, &type2);
+  my_free(0, &pt_symbol);
   dbg(lev, "name_pass_through_nets() end...\n");
 }
 
diff --git a/src/scheduler.c b/src/scheduler.c
index d4f0acab..57cf4c90 100644
--- a/src/scheduler.c
+++ b/src/scheduler.c
@@ -2758,6 +2758,16 @@ int xschem(ClientData clientdata, Tcl_Interp *interp, int argc, const char * arg
     case 't': /*----------------------------------------------*/
     if(!strcmp(argv[1], "test"))
     {
+      Ptr_hashtable table = {NULL, 0};
+      Ptr_hashentry *entry;
+      double a = 10.1;
+      ptr_hash_init(&table, 37);
+      ptr_hash_lookup(&table, "val", &a, XINSERT);
+    
+      entry = ptr_hash_lookup(&table, "val", NULL, XLOOKUP);
+      dbg(0, "val=%g\n", *(double *)entry->value);
+      ptr_hash_free(&table);
+    
       Tcl_ResetResult(interp);
     }
 
diff --git a/src/spice_netlist.c b/src/spice_netlist.c
index 90ad10d4..6b2d3607 100644
--- a/src/spice_netlist.c
+++ b/src/spice_netlist.c
@@ -786,10 +786,10 @@ Ptr_hashentry *ptr_hash_lookup(Ptr_hashtable *hashtable, const char *token, void
       if(what==XINSERT || what == XINSERT_NOREPLACE)            /* insert data */
       {
         s=sizeof( Ptr_hashentry );
-        entry=(Ptr_hashentry *)my_malloc(659, s);
+        entry=(Ptr_hashentry *)my_malloc(253, s);
         entry->next=NULL;
         entry->token=NULL;
-        my_strdup(658, &entry->token, token);
+        my_strdup(252, &entry->token, token);
         entry->value = value;
         entry->hash=hashcode;
         *preventry=entry;
@@ -801,8 +801,8 @@ Ptr_hashentry *ptr_hash_lookup(Ptr_hashtable *hashtable, const char *token, void
       if(what==XDELETE)             /* remove token from the hash table ... */
       {
         saveptr=entry->next;
-        my_free(896, &entry->token);
-        my_free(897, &entry);
+        my_free(273, &entry->token);
+        my_free(274, &entry);
         *preventry=saveptr;
       }
       else if(what == XINSERT ) {
@@ -821,7 +821,7 @@ void ptr_hash_init(Ptr_hashtable *hashtable, int size)
     dbg(0, "ptr_hash_init(): Warning hash table not empty, possible data leak\n");
   }
   hashtable->size = size;
-  hashtable->table = my_calloc(1576, size, sizeof(Ptr_hashentry *));
+  hashtable->table = my_calloc(1583, size, sizeof(Ptr_hashentry *));
 }
 
 static void ptr_hash_free_entry(Ptr_hashentry *entry)
@@ -829,8 +829,8 @@ static void ptr_hash_free_entry(Ptr_hashentry *entry)
   Ptr_hashentry *tmp;
   while( entry ) {
     tmp = entry -> next;
-    my_free(1171, &(entry->token));
-    my_free(1172, &entry);
+    my_free(1584, &(entry->token));
+    my_free(1585, &entry);
     entry = tmp;
   }
 }
@@ -846,7 +846,7 @@ void ptr_hash_free(Ptr_hashtable *hashtable)
       ptr_hash_free_entry( table[i] );
       table[i] = NULL;
     }
-    my_free(1575, &(hashtable->table));
+    my_free(1586, &(hashtable->table));
     hashtable->size = 0;
   }
 }