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MDEV-23991 fixup: Initialize the memory

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Also, revert the work-around for the test that was attempted in
commit 85613a3247.

This issue was caught by MemorySanitizer as well as on the
Microsoft Windows debug builds, thanks to /MD being used
starting with 10.4.

The code fix will also be applied to 10.2 because the regression
was introduced in commit afc9d00c66.
This commit is contained in:
Marko Mäkelä
2020-10-30 11:04:16 +02:00
parent 9936235985
commit 199863d72b
4 changed files with 23 additions and 5 deletions
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6
mysql-test/main/innodb_ext_key.result
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@ -204,6 +204,12 @@ Handler_read_retry 0
Handler_read_rnd 3
Handler_read_rnd_deleted 0
Handler_read_rnd_next 0
explain
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000
or l_receiptdate='1992-07-01' and l_orderkey between 5001 and 6000;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE lineitem index_merge PRIMARY,i_l_shipdate,i_l_receiptdate,i_l_orderkey,i_l_orderkey_quantity i_l_shipdate,i_l_receiptdate # NULL # Using
flush status;
select l_orderkey, l_linenumber from lineitem
where l_shipdate='1992-07-01' and l_orderkey between 1 and 1000