Polishing: use constants instead of magic numbers.

include/my_global.h:
  Introduce constants to be used instead of magic numbers.
sql/field.cc:
  Polishing: use contants instead of magic numbers.
sql/ha_innodb.cc:
  Polishing: use contants instead of magic numbers.
sql/handler.cc:
  Polishing: use contants instead of magic numbers.
sql/item.cc:
  Polishing: use contants instead of magic numbers.
sql/item.h:
  Polishing: use contants instead of magic numbers.
sql/item_func.cc:
  Polishing: use contants instead of magic numbers.
sql/item_subselect.cc:
  Polishing: use contants instead of magic numbers.
sql/log_event.cc:
  Polishing: use contants instead of magic numbers.
sql/sql_base.cc:
  Polishing: use contants instead of magic numbers.
sql/sql_select.cc:
  Polishing: use contants instead of magic numbers.
sql/sql_show.cc:
  Polishing: use contants instead of magic numbers.
sql/sql_table.cc:
  Polishing: use contants instead of magic numbers.

1 files changed, 3 insertions, 3 deletions

diff --git a/sql/field.cc b/sql/field.cc
index 367cbdaa0e5..aabb0ff6061 100644
--- a/sql/field.cc
+++ b/sql/field.cc
@@ -1203,12 +1203,12 @@ static bool test_if_real(const char *str,int length, CHARSET_INFO *cs)
 String *Field::val_int_as_str(String *val_buffer, my_bool unsigned_val)
 {
   CHARSET_INFO *cs= &my_charset_bin;
-  uint length= 21;
+  uint length;
   longlong value= val_int();
-  if (val_buffer->alloc(length))
+  if (val_buffer->alloc(MY_INT64_NUM_DECIMAL_DIGITS))
     return 0;
   length= (uint) (*cs->cset->longlong10_to_str)(cs, (char*) val_buffer->ptr(),
-                                                length,
+                                                MY_INT64_NUM_DECIMAL_DIGITS,
                                                 unsigned_val ? 10 : -10,
                                                 value);
   val_buffer->length(length);