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MDEV-14929 - AddressSanitizer: memcpy-param-overlap in Field_longstr::compress

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Handle overlaping "from" and Field_blob_compressed::value for compressed
blobs similarily to regular blobs.
This commit is contained in:
Sergey Vojtovich
2018-03-21 13:54:15 +04:00
parent 69efa1343a
commit 443b9a418c
3 changed files with 36 additions and 6 deletions
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13
mysql-test/main/column_compression.result
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@ -1360,3 +1360,16 @@ SELECT a, LENGTH(a) FROM t1;
a LENGTH(a)
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 255
DROP TABLE t1;
#
# MDEV-14929 - AddressSanitizer: memcpy-param-overlap in
# Field_longstr::compress
#
CREATE TABLE t1(b BLOB COMPRESSED);
INSERT INTO t1 VALUES('foo'),('bar');
SET SESSION optimizer_switch = 'derived_merge=off';
SELECT * FROM ( SELECT * FROM t1 ) AS sq ORDER BY b;
b
bar
foo
SET SESSION optimizer_switch=DEFAULT;
DROP TABLE t1;