Uploaded image for project: 'MariaDB Server'
  1. MariaDB Server
  2. MDEV-6776

ujis and eucjmps erroneously accept 0x8EA0 as a valid byte sequence

        Details

        • Type: Bug
        • Status: Closed
        • Priority: Minor
        • Resolution: Fixed
        • Affects Version/s: 5.5.39, 10.0.13
        • Fix Version/s: 10.0.14
        • Component/s: Character Sets
        • Labels:
          None

          Description

          Byte sequence 0x8EA0 is erroneously accepted as a valid ujis/eucjpms code:

          DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (a VARCHAR(10) CHARACTER SET ujis);
INSERT INTO t1 VALUES (0x8EA0);
SELECT HEX(a), CHAR_LENGTH(a) FROM t1;

          returns:

          +--------+----------------+
| HEX(a) | CHAR_LENGTH(a) |
+--------+----------------+
| 8EA0   |              2 |
+--------+----------------+

          This is wrong. The correct code ranges for ujis are:

            [x00-x7F]                     # ASCII/JIS-Roman (one-byte/character)  
  [x8E][xA1-xDF]                # half-width katakana (two bytes/char)  
  [x8F][xA1-xFE][xA1-xFE]       # JIS X 0212-1990 (three bytes/char)  
  [xA1-xFE][xA1-xFE]            # JIS X 0208:1997 (two bytes/char)

          The same problem is observed with eucjpms.

            Gliffy Diagrams

              Attachments

                Activity

                There are no comments yet on this issue.

                  People

                  • Assignee:
                    bar Alexander Barkov
                    Reporter:
                    bar Alexander Barkov
                  • Votes:
                    0 Vote for this issue
                    Watchers:
                    1 Start watching this issue

                    Dates

                    • Created:
                      Updated:
                      Resolved: