Bug#54483: valgrind errors when making warnings for

multiline inserts into partition
Bug#57071: EXTRACT(WEEK from date_col) cannot be
allowed as partitioning function

Renamed function according to reviewers comments.

sql/item.h:
  better name of processor function
sql/item_func.h:
  better name of processor function
sql/item_timefunc.h:
  better name of processor function
sql/sql_partition.cc:
  better name of processor function
  Updated comment.

sql/item.h

@@ -970,7 +970,7 @@ public:
     for date functions. Also used by partitioning code to reject
     timezone-dependent expressions in a (sub)partitioning function.
   */
-  virtual bool is_arguments_valid_processor(uchar *bool_arg)
+  virtual bool check_valid_arguments_processor(uchar *bool_arg)
   {
     return FALSE;
   }

sql/item_func.h

@@ -248,7 +248,7 @@ public:
     representation of a TIMESTAMP argument verbatim, and thus does not depend on
     the timezone.
    */
-  virtual bool is_arguments_valid_processor(uchar *bool_arg)
+  virtual bool check_valid_arguments_processor(uchar *bool_arg)
   {
     return has_timestamp_args();
   }

sql/item_timefunc.h

@@ -70,7 +70,7 @@ public:
   enum_monotonicity_info get_monotonicity_info() const;
   longlong val_int_endpoint(bool left_endp, bool *incl_endp);
   bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
-  bool is_arguments_valid_processor(uchar *int_arg)
+  bool check_valid_arguments_processor(uchar *int_arg)
   {
     return !has_date_args();
   }
@@ -90,7 +90,7 @@ public:
     maybe_null=1; 
   }
   bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
-  bool is_arguments_valid_processor(uchar *int_arg)
+  bool check_valid_arguments_processor(uchar *int_arg)
   {
     return !has_date_args();
   }
@@ -119,7 +119,7 @@ public:
     maybe_null=1; 
   }
   bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
-  bool is_arguments_valid_processor(uchar *int_arg)
+  bool check_valid_arguments_processor(uchar *int_arg)
   {
     return !has_date_args();
   }
@@ -152,7 +152,7 @@ public:
     maybe_null=1; 
   }
   bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
-  bool is_arguments_valid_processor(uchar *int_arg)
+  bool check_valid_arguments_processor(uchar *int_arg)
   {
     return !has_date_args();
   }
@@ -172,7 +172,7 @@ public:
     maybe_null=1;
   }
   bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
-  bool is_arguments_valid_processor(uchar *int_arg)
+  bool check_valid_arguments_processor(uchar *int_arg)
   {
     return !has_time_args();
   }
@@ -192,7 +192,7 @@ public:
     maybe_null=1;
   }
   bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
-  bool is_arguments_valid_processor(uchar *int_arg)
+  bool check_valid_arguments_processor(uchar *int_arg)
   {
     return !has_time_args();
   }
@@ -212,7 +212,7 @@ public:
      maybe_null=1;
   }
   bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
-  bool is_arguments_valid_processor(uchar *int_arg)
+  bool check_valid_arguments_processor(uchar *int_arg)
   {
     return !has_date_args();
   }
@@ -232,7 +232,7 @@ public:
     maybe_null=1;
   }
   bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
-  bool is_arguments_valid_processor(uchar *int_arg)
+  bool check_valid_arguments_processor(uchar *int_arg)
   {
     return !has_time_args();
   }
@@ -266,7 +266,7 @@ public:
     maybe_null=1;
   }
   bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
-  bool is_arguments_valid_processor(uchar *int_arg)
+  bool check_valid_arguments_processor(uchar *int_arg)
   {
     return !has_date_args();
   }
@@ -288,7 +288,7 @@ public:
     maybe_null=1;
   }
   bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
-  bool is_arguments_valid_processor(uchar *int_arg)
+  bool check_valid_arguments_processor(uchar *int_arg)
   {
     return !has_date_args();
   }
@@ -322,7 +322,7 @@ public:
     maybe_null=1;
   }
   bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
-  bool is_arguments_valid_processor(uchar *int_arg)
+  bool check_valid_arguments_processor(uchar *int_arg)
   {
     return !has_date_args();
   }
@@ -355,7 +355,7 @@ public:
     (and thus may not be used as a partitioning function)
     when its argument is NOT of the TIMESTAMP type.
   */
-  bool is_arguments_valid_processor(uchar *int_arg)
+  bool check_valid_arguments_processor(uchar *int_arg)
   {
     return !has_timestamp_args();
   }
@@ -380,7 +380,7 @@ public:
     max_length=10*MY_CHARSET_BIN_MB_MAXLEN;
   }
   bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
-  bool is_arguments_valid_processor(uchar *int_arg)
+  bool check_valid_arguments_processor(uchar *int_arg)
   {
     return !has_time_args();
   }
@@ -637,7 +637,7 @@ public:
   const char *func_name() const { return "from_days"; }
   bool get_date(MYSQL_TIME *res, uint fuzzy_date);
   bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
-  bool is_arguments_valid_processor(uchar *int_arg)
+  bool check_valid_arguments_processor(uchar *int_arg)
   {
     return has_date_args() || has_time_args();
   }
@@ -767,7 +767,7 @@ class Item_extract :public Item_int_func
   bool eq(const Item *item, bool binary_cmp) const;
   virtual void print(String *str, enum_query_type query_type);
   bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
-  bool is_arguments_valid_processor(uchar *int_arg)
+  bool check_valid_arguments_processor(uchar *int_arg)
   {
     switch (int_type) {
     case INTERVAL_YEAR:
@@ -1053,7 +1053,7 @@ public:
     maybe_null=1;
   }
   bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
-  bool is_arguments_valid_processor(uchar *int_arg)
+  bool check_valid_arguments_processor(uchar *int_arg)
   {
     return !has_time_args();
   }

sql/sql_partition.cc

@@ -1014,12 +1014,13 @@ static bool fix_fields_part_func(THD *thd, Item* func_expr, TABLE *table,
   }
 
   /*
-    We don't allow creating partitions with timezone-dependent expressions as
-    a (sub)partitioning function, but we want to allow such expressions when
-    opening existing tables for easier maintenance. This exception should be
-    deprecated at some point in future so that we always throw an error.
+    We don't allow creating partitions with expressions with non matching
+    arguments as a (sub)partitioning function,
+    but we want to allow such expressions when opening existing tables for
+    easier maintenance. This exception should be deprecated at some point
+    in future so that we always throw an error.
   */
-  if (func_expr->walk(&Item::is_arguments_valid_processor,
+  if (func_expr->walk(&Item::check_valid_arguments_processor,
                       0, NULL))
   {
     if (is_create_table_ind)