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| author | Georgi Kodinov <joro@sun.com> | 2010-03-23 17:07:00 +0200 |
|---|---|---|
| committer | Georgi Kodinov <joro@sun.com> | 2010-03-23 17:07:00 +0200 |
| commit | d9175c214777ab3b37cd3752290c80f33c49be41 (patch) | |
| tree | 71054058de67ea839694187d4caf855a62f8131e /mysql-test/r/loaddata.result | |
| parent | a4332c256edded6a6d2378ad3edca945ea57a77f (diff) | |
| download | mariadb-git-d9175c214777ab3b37cd3752290c80f33c49be41.tar.gz | |
Bug #51850: crash/memory overlap when using load data infile and set
col equal to itself!
There's no need to copy the value of a field into itself.
While generally harmless (except for some performance penalties)
it may be dangerous when the copy code doesn't expect this.
Fixed by checking if the source field is the same as the destination
field before copying the data.
Note that we must preserve the order of assignment of the null
flags (hence the null_value assignment addition).
Diffstat (limited to 'mysql-test/r/loaddata.result')
| -rw-r--r-- | mysql-test/r/loaddata.result | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/mysql-test/r/loaddata.result b/mysql-test/r/loaddata.result index 1e488b320d7..0c3f8d04463 100644 --- a/mysql-test/r/loaddata.result +++ b/mysql-test/r/loaddata.result @@ -484,4 +484,15 @@ SET character_set_filesystem=default; select @@character_set_filesystem; @@character_set_filesystem binary +# +# Bug #51850: crash/memory overlap when using load data infile and set +# col equal to itself! +# +CREATE TABLE t1(col0 LONGBLOB); +SELECT 'test' INTO OUTFILE 't1.txt'; +LOAD DATA INFILE 't1.txt' IGNORE INTO TABLE t1 SET col0=col0; +SELECT * FROM t1; +col0 +test +DROP TABLE t1; End of 5.1 tests |