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Bug#52164 Assertion failed: param.sort_length, file .\filesort.cc, line 149

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The crash happens because of incorrect max_length calculation
in QUOTE function(due to overflow). max_length is set
to 0 and it leads to assert failure.
The fix is to cast expression result to
ulonglong variable and adjust it if the
result exceeds MAX_BLOB_WIDTH.


mysql-test/r/func_str.result:
  test case
mysql-test/t/func_str.test:
  test case
sql/item_strfunc.h:
  cast expression result to ulonglong variable and
  adjust it if the result exceeds MAX_BLOB_WIDTH.
This commit is contained in:
Sergey Glukhov
2010-03-26 09:49:35 +04:00
parent 251be0170d
commit d5325c7793
3 changed files with 27 additions and 1 deletions
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14
mysql-test/r/func_str.result
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@ -2587,3 +2587,17 @@ FROM t2 WHERE t2.b = 1 GROUP BY t2.b;
DECODE((SELECT ENCODE('secret', t1.a) FROM t1,t2 WHERE t1.a = t2.a GROUP BY t1.b LIMIT 1), t2.a)
secret
DROP TABLE t1, t2;
#
# Bug#52164 Assertion failed: param.sort_length, file .\filesort.cc, line 149
#
CREATE TABLE t1 (a LONGBLOB NOT NULL);
INSERT INTO t1 VALUES (''),('');
SELECT 1 FROM t1, t1 t2
ORDER BY QUOTE(t1.a);
1
1
1
1
1
DROP TABLE t1;
End of 5.1 tests