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Bug#52199 utf32: mbminlen=4, mbmaxlen=4, type->mbminlen=0, type->mbmaxlen=4

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Merge and adjust a forgotten change to fix this bug.
rb://393 approved by Jimmy Yang
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  r3794 | marko | 2009-01-07 14:14:53 +0000 (Wed, 07 Jan 2009) | 18 lines

  branches/6.0: Allow the minimum length of a multi-byte character to be
  up to 4 bytes. (Bug #35391)

  dtype_t, dict_col_t: Replace mbminlen:2, mbmaxlen:3 with mbminmaxlen:5.
  In this way, the 5 bits can hold two values of 0..4, and the storage size
  of the fields will not cross the 64-bit boundary.  Encode the values as
  DATA_MBMAX * mbmaxlen + mbminlen.  Define the auxiliary macros
  DB_MBMINLEN(mbminmaxlen), DB_MBMAXLEN(mbminmaxlen), and
  DB_MINMAXLEN(mbminlen, mbmaxlen).

  Try to trim and pad UTF-16 and UTF-32 with spaces as appropriate.

  Alexander Barkov suggested the use of cs->cset->fill(cs, buff, len, 0x20).
  ha_innobase::store_key_val_for_row() now does that, but the added function
  row_mysql_pad_col() does not, because it doesn't have the MySQL TABLE object.

  rb://49 approved by Heikki Tuuri
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This commit is contained in:
Marko Mäkelä
2010-06-29 14:32:48 +03:00
parent 8847387ecd
commit 142e8417dc
20 changed files with 364 additions and 185 deletions
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5
mysql-test/suite/innodb/r/innodb_bug52199.result Normal file
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@ -0,0 +1,5 @@
CREATE TABLE bug52199 (a INT NOT NULL,
b CHAR(125) CHARACTER SET utf32 COLLATE utf32_bin NOT NULL
)ENGINE=InnoDB;
CREATE UNIQUE INDEX idx ON bug52199(a);
DROP TABLE bug52199;