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BUG#29464 - load data infile into table with big5 chinese fulltext index

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hangs 100% cpu

Fulltext parser may fall into infinite loop when it gets illegal
multibyte sequence (or a sequence that doesn't have mapping to unicode).

Affects 5.1 only.


mysql-test/r/fulltext.result:
  A test case for BUG#29464.
mysql-test/t/fulltext.test:
  A test case for BUG#29464.
storage/myisam/ft_parser.c:
  ctype() may return negative value, which was stored in unsigned
  variable.
  
  Also ctype() may return negative length for correct multibyte
  sequence that doesn't have a mapping to unicode. These characters
  are skipped correctly with this patch.
This commit is contained in:
unknown
2007-07-05 15:17:06 +05:00
parent 435df1859f
commit 3bd52b0b7b
3 changed files with 23 additions and 6 deletions
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4
mysql-test/r/fulltext.result
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@ -476,3 +476,7 @@ ALTER TABLE t1 DISABLE KEYS;
SELECT * FROM t1 WHERE MATCH(a) AGAINST('test');
ERROR HY000: Can't find FULLTEXT index matching the column list
DROP TABLE t1;
CREATE TABLE t1(a VARCHAR(2) CHARACTER SET big5 COLLATE big5_chinese_ci,
FULLTEXT(a));
INSERT INTO t1 VALUES(0xA3C2);
DROP TABLE t1;