diff --git a/sql/item_cmpfunc.h b/sql/item_cmpfunc.h
index 5105eb9279d..c33042e11ab 100644
--- a/sql/item_cmpfunc.h
+++ b/sql/item_cmpfunc.h
@@ -449,17 +449,19 @@ public:
   void update_used_tables()
   {
     if (!args[0]->maybe_null)
-      used_tables_cache=0;			/* is always false */
+    {
+      used_tables_cache= 0;			/* is always false */
+      cached_value= (longlong) 0;
+    }
     else
     {
       args[0]->update_used_tables();
-      used_tables_cache=args[0]->used_tables();
-    }
-    if (!used_tables_cache)
-    {
-      /* Remember if the value is always NULL or never NULL */
-      args[0]->val();
-      cached_value= args[0]->null_value ? (longlong) 1 : (longlong) 0;
+      if (!(used_tables_cache=args[0]->used_tables()))
+      {
+	/* Remember if the value is always NULL or never NULL */
+	args[0]->val();
+	cached_value= args[0]->null_value ? (longlong) 1 : (longlong) 0;
+      }
     }
   }
   optimize_type select_optimize() const { return OPTIMIZE_NULL; }
diff --git a/sql/sql_analyse.cc b/sql/sql_analyse.cc
index 457356d4253..6227b1251db 100644
--- a/sql/sql_analyse.cc
+++ b/sql/sql_analyse.cc
@@ -58,6 +58,7 @@ proc_analyse_init(THD *thd, ORDER *param, select_result *result,
     if ((*param->item)->type() != Item::INT_ITEM ||
 	(*param->item)->val() < 0)
     {
+      delete pc;
       net_printf(&thd->net, ER_WRONG_PARAMETERS_TO_PROCEDURE, proc_name);
       return 0;
     }
@@ -65,6 +66,7 @@ proc_analyse_init(THD *thd, ORDER *param, select_result *result,
     param = param->next;
     if (param->next)  // no third parameter possible
     {
+      delete pc;
       net_printf(&thd->net, ER_WRONG_PARAMCOUNT_TO_PROCEDURE, proc_name);
       return 0;
     }
@@ -72,6 +74,7 @@ proc_analyse_init(THD *thd, ORDER *param, select_result *result,
     if ((*param->item)->type() != Item::INT_ITEM ||
 	(*param->item)->val() < 0)
     {
+      delete pc;
       net_printf(&thd->net, ER_WRONG_PARAMETERS_TO_PROCEDURE, proc_name);
       return 0;
     }
@@ -80,6 +83,7 @@ proc_analyse_init(THD *thd, ORDER *param, select_result *result,
   else if ((*param->item)->type() != Item::INT_ITEM ||
 	   (*param->item)->val() < 0)
   {
+    delete pc;
     net_printf(&thd->net, ER_WRONG_PARAMETERS_TO_PROCEDURE, proc_name);
     return 0;
   }
diff --git a/sql/sql_analyse.h b/sql/sql_analyse.h
index ce5c0af6a96..c826b69e53c 100644
--- a/sql/sql_analyse.h
+++ b/sql/sql_analyse.h
@@ -288,13 +288,14 @@ protected:
 public:
   uint max_tree_elements, max_treemem;
 
-  analyse(select_result *res) :Procedure(res, PROC_NO_SORT), rows(0),
-    output_str_length(0) {}
+  analyse(select_result *res) :Procedure(res, PROC_NO_SORT), f_info(0),
+    rows(0), output_str_length(0) {}
 
   ~analyse()
-  { 
-    for (field_info **f=f_info; f != f_end; f++)
-      delete (*f);
+  {
+    if (f_info)
+      for (field_info **f=f_info; f != f_end; f++)
+	delete (*f);
   }
   virtual void add() {}
   virtual bool change_columns(List<Item> &fields);