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Bug#57279 updatexml dies with: Assertion failed: str_arg[length] == 0

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Problem: crash in Item_float constructor on DBUG_ASSERT due
to not null-terminated string parameter.

Fix: making Item_float::Item_float non-null-termintated parameter safe:
- Using temporary buffer when generating error

modified:
  @ mysql-test/r/xml.result
  @ mysql-test/t/xml.test
  @ sql/item.cc
This commit is contained in:
Alexander Barkov
2010-11-18 16:11:18 +03:00
parent aaa370f5d7
commit d720c49188
3 changed files with 31 additions and 8 deletions
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10
mysql-test/t/xml.test
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@@ -617,4 +617,14 @@ FROM t1 ORDER BY t1.id;
DROP TABLE t1;
--echo #
--echo # Bug#57279 updatexml dies with: Assertion failed: str_arg[length] == 0
--echo #
--error ER_ILLEGAL_VALUE_FOR_TYPE
SELECT UPDATEXML(NULL, (LPAD(0.1111E-15, '2011', 1)), 1);
--error ER_ILLEGAL_VALUE_FOR_TYPE
SELECT EXTRACTVALUE('', LPAD(0.1111E-15, '2011', 1));
--echo End of 5.1 tests