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Fix for bug #41868: crash or memory overrun with concat + upper,

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date_format functions

String::realloc() did not check whether the existing string data fits in
the newly allocated buffer for cases when reallocating a String object
with external buffer (i.e.alloced == FALSE).  This could lead to memory
overruns in some cases.
This commit is contained in:
Alexey Kopytov
2009-02-10 15:38:56 +03:00
parent 6a834d1f4f
commit a715b70278
5 changed files with 32 additions and 18 deletions
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6
mysql-test/r/func_str.result
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@@ -2181,4 +2181,10 @@ def format(a, 2) 253 20 4 Y 0 2 8
format(a, 2)
1.33
drop table t1;
CREATE TABLE t1 (c DATE, aa VARCHAR(30));
INSERT INTO t1 VALUES ('2008-12-31','aaaaaa');
SELECT DATE_FORMAT(c, GET_FORMAT(DATE, 'eur')) h, CONCAT(UPPER(aa),', ', aa) i FROM t1;
h i
31.12.2008 AAAAAA, aaaaaa
DROP TABLE t1;
End of 5.0 tests