Merge with MySQL 5.1.55

- Fixed some issues with partitions and connection_string, which also fixed lp:716890 "Pre- and post-recovery crash in Aria"
- Fixed wrong assert in Aria

Now need to merge with latest xtradb before pushing 

sql/ha_partition.cc:
  Ensure that m_ordered_rec_buffer is not freed before close.
sql/mysqld.cc:
  Changed to use opt_stack_trace instead of opt_pstack.
  Removed references to pstack
sql/partition_element.h:
  Ensure that connect_string is initialized
storage/maria/ma_key_recover.c:
  Fixed wrong assert

1 files changed, 10 insertions, 0 deletions

diff --git a/mysql-test/t/subselect4.test b/mysql-test/t/subselect4.test
index 41edd7f1216..bb97f246488 100644
--- a/mysql-test/t/subselect4.test
+++ b/mysql-test/t/subselect4.test
@@ -161,5 +161,15 @@ SELECT * FROM t1 WHERE NULL NOT IN ( SELECT c FROM t2 WHERE c = 1 AND c <> 1 );
 DROP TABLE t1, t2, t3, t4, t5;
 
 --echo #
+--echo # Bug#58207: invalid memory reads when using default column value and 
+--echo # tmptable needed
+--echo #
+CREATE TABLE t(a VARCHAR(245) DEFAULT
+'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa');
+INSERT INTO t VALUES (''),(''),(''),(''),(''),(''),(''),(''),(''),(''),('');
+SELECT * FROM (SELECT default(a) FROM t GROUP BY a) d;
+DROP TABLE t;
+
+--echo #
 --echo # End of 5.1 tests.
 --echo #