Merge mysql.com:/home/cps/mysql/trees/mysql-5.0-virgin

into  mysql.com:/home/cps/mysql/trees/mysql-5.1-virgin

mysql-test/r/csv.result

@@ -5195,3 +5195,13 @@ select * from t1 where i between 2 and 4 and v in ('def','3r4f','lmn');
 i	v
 4	3r4f
 drop table t1;
+create table bug15205 (val int(11) default null) engine=csv;
+create table bug15205_2 (val int(11) default null) engine=csv;
+select * from bug15205;
+ERROR HY000: Can't get stat of './test/bug15205.CSV' (Errcode: 2)
+select * from bug15205_2;
+val
+select * from bug15205;
+val
+drop table bug15205;
+drop table bug15205_2;

mysql-test/t/csv.test

@@ -1558,3 +1558,27 @@ select * from t1;
 alter table t1 add unique key (i, v);
 select * from t1 where i between 2 and 4 and v in ('def','3r4f','lmn');
 drop table t1;
+
+#
+# Bug #15205   Select from CSV table without the datafile causes crash
+#
+# NOTE: the bug is not deterministic
+
+# The crash happens because the necessary cleanup after an error wasn't
+# performed. Namely, the table share, inserted in the hash during table
+# open, was not deleted from hash. At the same time the share was freed
+# when an error was encountered. Thus, subsequent access to the hash
+# resulted in scanning through deleted memory and we were geting a crash.
+# that's why we need two tables in the bugtest
+
+create table bug15205 (val int(11) default null) engine=csv;
+create table bug15205_2 (val int(11) default null) engine=csv;
+--exec rm $MYSQLTEST_VARDIR/master-data/test/bug15205.CSV
+# system error (can't open the datafile)
+--error ER_GET_ERRNO
+select * from bug15205;
+select * from bug15205_2;
+--exec touch $MYSQLTEST_VARDIR/master-data/test/bug15205.CSV
+select * from bug15205;
+drop table bug15205;
+drop table bug15205_2;