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Bug#38999 valgrind warnings for update statement in function compare_record()

Browse Source 
(InnoDB plugin branch)
This commit is contained in:
Sergey Glukhov
2010-06-09 16:17:18 +04:00
parent d2db80c8d4
commit 58f1c5fef3
3 changed files with 31 additions and 0 deletions
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12
mysql-test/suite/innodb_plugin/r/innodb_mysql.result
View File

@ -2378,4 +2378,16 @@ SELECT SECOND(c)-@bug47453 FROM t1 JOIN t2 ON d=a;
SECOND(c)-@bug47453
0
DROP TABLE t1, t2;
#
# Bug#38999 valgrind warnings for update statement in function compare_record()
#
CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
CREATE TABLE t2 (a INT PRIMARY KEY) ENGINE=InnoDB;
INSERT INTO t1 values (1),(2),(3),(4),(5);
INSERT INTO t2 values (1);
SELECT * FROM t1 WHERE a = 2;
a
2
UPDATE t1,t2 SET t1.a = t1.a + 100 WHERE t1.a = 1;
DROP TABLE t1,t2;
End of 5.1 tests

13
mysql-test/suite/innodb_plugin/t/innodb_mysql.test
View File

@ -618,5 +618,18 @@ SELECT SECOND(c)-@bug47453 FROM t1 JOIN t2 ON d=a;
DROP TABLE t1, t2;
--echo #
--echo # Bug#38999 valgrind warnings for update statement in function compare_record()
--echo #
CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
CREATE TABLE t2 (a INT PRIMARY KEY) ENGINE=InnoDB;
INSERT INTO t1 values (1),(2),(3),(4),(5);
INSERT INTO t2 values (1);
SELECT * FROM t1 WHERE a = 2;
UPDATE t1,t2 SET t1.a = t1.a + 100 WHERE t1.a = 1;
DROP TABLE t1,t2;
--echo End of 5.1 tests

6
storage/innodb_plugin/row/row0sel.c
View File

@ -2678,6 +2678,12 @@ row_sel_store_mysql_rec(
prebuilt->blob_heap = NULL;
}
/* init null bytes with default values as they might be
left uninitialized in some cases and these uninited bytes
might be copied into mysql record buffer that leads to
valgrind warnings */
memcpy(mysql_rec, prebuilt->default_rec, prebuilt->null_bitmap_len);
for (i = 0; i < prebuilt->n_template; i++) {
templ = prebuilt->mysql_template + i;