Merge Bug#28323 to mysql-5.1.29-rc

mysql-test/t/xa.test

@@ -74,3 +74,47 @@ xa start 'zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz';
 select * from t1;
 drop table t1;
 
+disconnect con1;
+
+#
+# Bug#28323: Server crashed in xid cache operations
+#
+
+--disable_warnings
+drop table if exists t1;
+--enable_warnings
+
+create table t1(a int, b int, c varchar(20), primary key(a)) engine = innodb;
+insert into t1 values(1, 1, 'a');
+insert into t1 values(2, 2, 'b');
+
+connect (con1,localhost,root,,);
+connect (con2,localhost,root,,);
+
+--connection con1
+xa start 'a','b';
+update t1 set c = 'aa' where a = 1;
+--connection con2
+xa start 'a','c';
+update t1 set c = 'bb' where a = 2;
+--connection con1
+--send update t1 set c = 'bb' where a = 2
+--connection con2
+--sleep 1
+--error ER_LOCK_DEADLOCK
+update t1 set c = 'aa' where a = 1;
+select count(*) from t1;
+--error ER_XA_RBDEADLOCK
+xa end 'a','c';
+xa rollback 'a','c';
+--disconnect con2
+
+connect (con3,localhost,root,,);
+--connection con3
+xa start 'a','c';
+
+--disconnect con1
+--disconnect con3
+--connection default
+
+--echo End of 5.0 tests