Merge moonlight.intranet:/home/tomash/src/mysql_ab/mysql-5.1

into  moonlight.intranet:/home/tomash/src/mysql_ab/mysql-5.1-bug18819


mysql-test/include/mix1.inc:
  Auto merged
mysql-test/r/innodb_mysql.result:
  Auto merged
sql/sql_delete.cc:
  Auto merged

mysql-test/include/mix1.inc

@@ -259,6 +259,36 @@ select distinct a1 from t4 where pk_col not in (1,2,3,4);
 
 drop table t1,t4;
 
+
+#
+# BUG#18819: DELETE IGNORE hangs on foreign key parent delete
+#
+# The bug itself does not relate to InnoDB, but we have to use foreign
+# keys to reproduce it.
+#
+--disable_warnings
+DROP TABLE IF EXISTS t2, t1;
+--enable_warnings
+
+CREATE TABLE t1 (i INT NOT NULL PRIMARY KEY) ENGINE= InnoDB;
+CREATE TABLE t2 (
+  i INT NOT NULL,
+  FOREIGN KEY (i) REFERENCES t1 (i) ON DELETE NO ACTION
+) ENGINE= InnoDB;
+
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (1);
+
+DELETE IGNORE FROM t1 WHERE i = 1;
+
+SELECT * FROM t1, t2;
+
+DROP TABLE t2, t1;
+
+
+--echo End of 4.1 tests.
+
+
 #
 # Bug #6142: a problem with the empty innodb table
 # (was part of group_min_max.test)

mysql-test/r/innodb_mysql.result

@@ -248,6 +248,22 @@ b
 c
 d
 drop table t1,t4;
+DROP TABLE IF EXISTS t2, t1;
+CREATE TABLE t1 (i INT NOT NULL PRIMARY KEY) ENGINE= InnoDB;
+CREATE TABLE t2 (
+i INT NOT NULL,
+FOREIGN KEY (i) REFERENCES t1 (i) ON DELETE NO ACTION
+) ENGINE= InnoDB;
+INSERT INTO t1 VALUES (1);
+INSERT INTO t2 VALUES (1);
+DELETE IGNORE FROM t1 WHERE i = 1;
+Warnings:
+Error	1451	Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t2`, CONSTRAINT `t2_ibfk_1` FOREIGN KEY (`i`) REFERENCES `t1` (`i`) ON DELETE NO ACTION)
+SELECT * FROM t1, t2;
+i	i
+1	1
+DROP TABLE t2, t1;
+End of 4.1 tests.
 create table t1 (
 a varchar(30), b varchar(30), primary key(a), key(b)
 );

sql/sql_delete.cc

@@ -350,7 +350,7 @@ bool mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds,
     mysql_unlock_tables(thd, thd->lock);
     thd->lock=0;
   }
-  if (error < 0)
+  if (error < 0 || (thd->lex->ignore && !thd->is_fatal_error))
   {
     thd->row_count_func= deleted;
     send_ok(thd,deleted);