BUG#50474: rpl_slave_load_remove_tmpfile failed on windows debug

enabled binary

The test case injects an error in the server by deleting the
temporary file that it uses during the load data statement
execution. The error consisted of closing, deleting and setting
the file descriptor to -1 right before calling mysql_file_write.

Although, this error injection seems to work OK in Unix like
environments, in Windows, this would cause the server to hit an
assertion in 'my_get_open_flags':

  DBUG_ASSERT(fd >= MY_FILE_MIN && fd < (int)my_file_limit)

We fix this by changing the error injection to just call the
macro my_delete_allow_opened, instead of the close + delete + set
fd=-1. The macro deletes the file and is platform
independent. Additionally, this required some changes to how the
assertion is handled in the test case to make it cope with this
change.

mysql-test/suite/rpl/r/rpl_slave_load_remove_tmpfile.result

@@ -10,47 +10,7 @@ insert into t1(b) values (1);
 insert into t1(b) values (2);
 load data infile '../../std_data/rpl_loaddata.dat' into table t1;
 commit;
-show slave status;
-Slave_IO_State	#
-Master_Host	127.0.0.1
-Master_User	root
-Master_Port	MASTER_MYPORT
-Connect_Retry	1
-Master_Log_File	master-bin.000001
-Read_Master_Log_Pos	#
-Relay_Log_File	#
-Relay_Log_Pos	#
-Relay_Master_Log_File	master-bin.000001
-Slave_IO_Running	Yes
-Slave_SQL_Running	No
-Replicate_Do_DB	
-Replicate_Ignore_DB	
-Replicate_Do_Table	
-Replicate_Ignore_Table	
-Replicate_Wild_Do_Table	
-Replicate_Wild_Ignore_Table	
-Last_Errno	9
-Last_Error	Error in Begin_load_query event: write to '../../tmp/SQL_LOAD.data' failed
-Skip_Counter	0
-Exec_Master_Log_Pos	#
-Relay_Log_Space	#
-Until_Condition	None
-Until_Log_File	
-Until_Log_Pos	0
-Master_SSL_Allowed	No
-Master_SSL_CA_File	
-Master_SSL_CA_Path	
-Master_SSL_Cert	
-Master_SSL_Cipher	
-Master_SSL_Key	
-Seconds_Behind_Master	#
-Master_SSL_Verify_Server_Cert	No
-Last_IO_Errno	#
-Last_IO_Error	#
-Last_SQL_Errno	9
-Last_SQL_Error	Error in Begin_load_query event: write to '../../tmp/SQL_LOAD.data' failed
-Replicate_Ignore_Server_Ids	
-Master_Server_Id	1
 drop table t1;
 drop table t1;
-call mtr.add_suppression("Slave: Error writing file 'UNKNOWN' .Errcode: 9. Error_code: 3");
+call mtr.add_suppression("Slave: Can't get stat of .*");
+call mtr.add_suppression("Slave: File.* not found.*");

mysql-test/suite/rpl/t/rpl_slave_load_remove_tmpfile.test

@@ -33,10 +33,17 @@ commit;
 connection slave;
 source include/wait_for_slave_sql_to_stop.inc;
 
---replace_result $MASTER_MYPORT MASTER_MYPORT
---replace_column 1 # 7 # 8 # 9 # 22 # 23 # 33 # 35 # 36 #
---replace_regex /SQL_LOAD-[0-9]-[0-9]-[0-9]*/SQL_LOAD/
-query_vertical show slave status;
+--let $error= query_get_value(SHOW SLAVE STATUS, Last_Errno, 1)
+# windows and linux different error numbers here:
+# Windows:
+#  - Last_Errno     29 (File not found)
+# Unix like OS: 
+#  - Last_Errno      13 (Can't stat file)
+--let $assertion= `SELECT $error=29 OR $error=13`
+if (!$assertion)
+{
+  --echo UNEXPECTED ERROR NUMBER: $error
+}
 
 ##########################################################################
 #                             Clean up
@@ -49,4 +56,5 @@ connection slave;
 
 drop table t1;
 
-call mtr.add_suppression("Slave: Error writing file 'UNKNOWN' .Errcode: 9. Error_code: 3");
+call mtr.add_suppression("Slave: Can't get stat of .*");
+call mtr.add_suppression("Slave: File.* not found.*");

sql/log_event.cc

@@ -6355,9 +6355,7 @@ int Append_block_log_event::do_apply_event(Relay_log_info const *rli)
 
   DBUG_EXECUTE_IF("remove_slave_load_file_before_write",
                   {
-                    mysql_file_close(fd, MYF(0));
-                    fd= -1;
-                    mysql_file_delete(0, fname, MYF(0));
+                    my_delete_allow_opened(fname, MYF(0));
                   });
 
   if (mysql_file_write(fd, (uchar*) block, block_len, MYF(MY_WME+MY_NABP)))