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-rw-r--r--mysql-test/main/distinct.test18
1 files changed, 18 insertions, 0 deletions
diff --git a/mysql-test/main/distinct.test b/mysql-test/main/distinct.test
index c11f8b501bc..d41340c29fd 100644
--- a/mysql-test/main/distinct.test
+++ b/mysql-test/main/distinct.test
@@ -798,4 +798,22 @@ CREATE TABLE t1 (b1 BIT, b2 BIT, b3 BIT, b4 BIT , b5 BIT, b6 BIT);
INSERT INTO t1 VALUES (1,0,0,1,0,1),(0,1,0,0,1,0);
SELECT DISTINCT b1+'0', b2+'0', b3+'0', b4+'0', b5+'0', b6 +'0' FROM t1;
DROP TABLE t1;
+
+--echo #
+--echo # MDEV-12575: Server crash in AGGR_OP::put_record or in JOIN_CACHE::free
+--echo # or Invalid write in JOIN::make_aggr_tables_info
+--echo #
+
+CREATE TABLE t1 (pk INT PRIMARY KEY);
+INSERT INTO t1 VALUES (1),(2);
+explain
+( SELECT DISTINCT 1 FROM t1 ORDER BY BENCHMARK(1, MIN(pk)) )
+UNION
+( SELECT DISTINCT 1 FROM t1 ORDER BY BENCHMARK(1, MIN(pk)) );
+
+( SELECT DISTINCT 1 FROM t1 ORDER BY BENCHMARK(1, MIN(pk)) )
+UNION
+( SELECT DISTINCT 1 FROM t1 ORDER BY BENCHMARK(1, MIN(pk)) );
+drop table t1;
+
--echo End of 5.5 tests