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Bug #13601: Wrong int type for bit

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The wrong value was being reported as the field_length for BIT
  fields, resulting in confusion for at least Connector/J. The
  field_length is now always the number of bits in the field, as
  it should be.
This commit is contained in:
jimw@mysql.com
2006-04-04 17:54:58 -07:00
parent 0903941d05
commit 1a59580dcd
8 changed files with 75 additions and 39 deletions
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14
sql/field.h
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@@ -1303,17 +1303,18 @@ public:
uchar *bit_ptr; // position in record where 'uneven' bits store
uchar bit_ofs; // offset to 'uneven' high bits
uint bit_len; // number of 'uneven' high bits
uint bytes_in_rec;
Field_bit(char *ptr_arg, uint32 len_arg, uchar *null_ptr_arg,
uchar null_bit_arg, uchar *bit_ptr_arg, uchar bit_ofs_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg);
enum_field_types type() const { return FIELD_TYPE_BIT; }
enum ha_base_keytype key_type() const { return HA_KEYTYPE_BIT; }
uint32 key_length() const { return (uint32) field_length + (bit_len > 0); }
uint32 max_length() { return (uint32) field_length * 8 + bit_len; }
uint32 key_length() const { return (uint32) (field_length + 7) / 8; }
uint32 max_length() { return field_length; }
uint size_of() const { return sizeof(*this); }
Item_result result_type () const { return INT_RESULT; }
void reset(void) { bzero(ptr, field_length); }
void reset(void) { bzero(ptr, bytes_in_rec); }
int store(const char *to, uint length, CHARSET_INFO *charset);
int store(double nr);
int store(longlong nr, bool unsigned_val);
@@ -1335,9 +1336,8 @@ public:
{ Field_bit::store(buff, length, &my_charset_bin); }
void sort_string(char *buff, uint length)
{ get_key_image(buff, length, itRAW); }
uint32 pack_length() const
{ return (uint32) field_length + (bit_len > 0); }
uint32 pack_length_in_rec() const { return field_length; }
uint32 pack_length() const { return (uint32) (field_length + 7) / 8; }
uint32 pack_length_in_rec() const { return bytes_in_rec; }
void sql_type(String &str) const;
char *pack(char *to, const char *from, uint max_length=~(uint) 0);
const char *unpack(char* to, const char *from);
@@ -1354,13 +1354,11 @@ public:
class Field_bit_as_char: public Field_bit {
public:
uchar create_length;
Field_bit_as_char(char *ptr_arg, uint32 len_arg, uchar *null_ptr_arg,
uchar null_bit_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg);
enum ha_base_keytype key_type() const { return HA_KEYTYPE_BINARY; }
uint32 max_length() { return (uint32) create_length; }
uint size_of() const { return sizeof(*this); }
int store(const char *to, uint length, CHARSET_INFO *charset);
int store(double nr) { return Field_bit::store(nr); }