Commit 29989705 authored by zkasheff's avatar zkasheff

Merge branch 'bugs/61'

parents 1ea2216f 9f691995
...@@ -27,6 +27,7 @@ CREATE TABLE t (a TINYBLOB NULL); ...@@ -27,6 +27,7 @@ CREATE TABLE t (a TINYBLOB NULL);
ALTER TABLE t CHANGE COLUMN a a TEXT NULL; ALTER TABLE t CHANGE COLUMN a a TEXT NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version
ALTER TABLE t CHANGE COLUMN a a BLOB NULL; ALTER TABLE t CHANGE COLUMN a a BLOB NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this MySQL version
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a TINYBLOB NULL); CREATE TABLE t (a TINYBLOB NULL);
ALTER TABLE t CHANGE COLUMN a a TEXT NOT NULL; ALTER TABLE t CHANGE COLUMN a a TEXT NOT NULL;
...@@ -44,11 +45,13 @@ CREATE TABLE t (a TINYBLOB NOT NULL); ...@@ -44,11 +45,13 @@ CREATE TABLE t (a TINYBLOB NOT NULL);
ALTER TABLE t CHANGE COLUMN a a TEXT NOT NULL; ALTER TABLE t CHANGE COLUMN a a TEXT NOT NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version
ALTER TABLE t CHANGE COLUMN a a BLOB NOT NULL; ALTER TABLE t CHANGE COLUMN a a BLOB NOT NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this MySQL version
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a TINYBLOB NULL); CREATE TABLE t (a TINYBLOB NULL);
ALTER TABLE t CHANGE COLUMN a a MEDIUMTEXT NULL; ALTER TABLE t CHANGE COLUMN a a MEDIUMTEXT NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version
ALTER TABLE t CHANGE COLUMN a a MEDIUMBLOB NULL; ALTER TABLE t CHANGE COLUMN a a MEDIUMBLOB NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this MySQL version
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a TINYBLOB NULL); CREATE TABLE t (a TINYBLOB NULL);
ALTER TABLE t CHANGE COLUMN a a MEDIUMTEXT NOT NULL; ALTER TABLE t CHANGE COLUMN a a MEDIUMTEXT NOT NULL;
...@@ -66,11 +69,13 @@ CREATE TABLE t (a TINYBLOB NOT NULL); ...@@ -66,11 +69,13 @@ CREATE TABLE t (a TINYBLOB NOT NULL);
ALTER TABLE t CHANGE COLUMN a a MEDIUMTEXT NOT NULL; ALTER TABLE t CHANGE COLUMN a a MEDIUMTEXT NOT NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version
ALTER TABLE t CHANGE COLUMN a a MEDIUMBLOB NOT NULL; ALTER TABLE t CHANGE COLUMN a a MEDIUMBLOB NOT NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this MySQL version
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a TINYBLOB NULL); CREATE TABLE t (a TINYBLOB NULL);
ALTER TABLE t CHANGE COLUMN a a LONGTEXT NULL; ALTER TABLE t CHANGE COLUMN a a LONGTEXT NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version
ALTER TABLE t CHANGE COLUMN a a LONGBLOB NULL; ALTER TABLE t CHANGE COLUMN a a LONGBLOB NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this MySQL version
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a TINYBLOB NULL); CREATE TABLE t (a TINYBLOB NULL);
ALTER TABLE t CHANGE COLUMN a a LONGTEXT NOT NULL; ALTER TABLE t CHANGE COLUMN a a LONGTEXT NOT NULL;
...@@ -88,6 +93,7 @@ CREATE TABLE t (a TINYBLOB NOT NULL); ...@@ -88,6 +93,7 @@ CREATE TABLE t (a TINYBLOB NOT NULL);
ALTER TABLE t CHANGE COLUMN a a LONGTEXT NOT NULL; ALTER TABLE t CHANGE COLUMN a a LONGTEXT NOT NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version
ALTER TABLE t CHANGE COLUMN a a LONGBLOB NOT NULL; ALTER TABLE t CHANGE COLUMN a a LONGBLOB NOT NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this MySQL version
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a BLOB NULL); CREATE TABLE t (a BLOB NULL);
ALTER TABLE t CHANGE COLUMN a a TINYTEXT NULL; ALTER TABLE t CHANGE COLUMN a a TINYTEXT NULL;
...@@ -139,6 +145,7 @@ CREATE TABLE t (a BLOB NULL); ...@@ -139,6 +145,7 @@ CREATE TABLE t (a BLOB NULL);
ALTER TABLE t CHANGE COLUMN a a MEDIUMTEXT NULL; ALTER TABLE t CHANGE COLUMN a a MEDIUMTEXT NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version
ALTER TABLE t CHANGE COLUMN a a MEDIUMBLOB NULL; ALTER TABLE t CHANGE COLUMN a a MEDIUMBLOB NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this MySQL version
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a BLOB NULL); CREATE TABLE t (a BLOB NULL);
ALTER TABLE t CHANGE COLUMN a a MEDIUMTEXT NOT NULL; ALTER TABLE t CHANGE COLUMN a a MEDIUMTEXT NOT NULL;
...@@ -156,11 +163,13 @@ CREATE TABLE t (a BLOB NOT NULL); ...@@ -156,11 +163,13 @@ CREATE TABLE t (a BLOB NOT NULL);
ALTER TABLE t CHANGE COLUMN a a MEDIUMTEXT NOT NULL; ALTER TABLE t CHANGE COLUMN a a MEDIUMTEXT NOT NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version
ALTER TABLE t CHANGE COLUMN a a MEDIUMBLOB NOT NULL; ALTER TABLE t CHANGE COLUMN a a MEDIUMBLOB NOT NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this MySQL version
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a BLOB NULL); CREATE TABLE t (a BLOB NULL);
ALTER TABLE t CHANGE COLUMN a a LONGTEXT NULL; ALTER TABLE t CHANGE COLUMN a a LONGTEXT NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version
ALTER TABLE t CHANGE COLUMN a a LONGBLOB NULL; ALTER TABLE t CHANGE COLUMN a a LONGBLOB NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this MySQL version
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a BLOB NULL); CREATE TABLE t (a BLOB NULL);
ALTER TABLE t CHANGE COLUMN a a LONGTEXT NOT NULL; ALTER TABLE t CHANGE COLUMN a a LONGTEXT NOT NULL;
...@@ -178,6 +187,7 @@ CREATE TABLE t (a BLOB NOT NULL); ...@@ -178,6 +187,7 @@ CREATE TABLE t (a BLOB NOT NULL);
ALTER TABLE t CHANGE COLUMN a a LONGTEXT NOT NULL; ALTER TABLE t CHANGE COLUMN a a LONGTEXT NOT NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version
ALTER TABLE t CHANGE COLUMN a a LONGBLOB NOT NULL; ALTER TABLE t CHANGE COLUMN a a LONGBLOB NOT NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this MySQL version
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a MEDIUMBLOB NULL); CREATE TABLE t (a MEDIUMBLOB NULL);
ALTER TABLE t CHANGE COLUMN a a TINYTEXT NULL; ALTER TABLE t CHANGE COLUMN a a TINYTEXT NULL;
...@@ -253,6 +263,7 @@ CREATE TABLE t (a MEDIUMBLOB NULL); ...@@ -253,6 +263,7 @@ CREATE TABLE t (a MEDIUMBLOB NULL);
ALTER TABLE t CHANGE COLUMN a a LONGTEXT NULL; ALTER TABLE t CHANGE COLUMN a a LONGTEXT NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version
ALTER TABLE t CHANGE COLUMN a a LONGBLOB NULL; ALTER TABLE t CHANGE COLUMN a a LONGBLOB NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this MySQL version
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a MEDIUMBLOB NULL); CREATE TABLE t (a MEDIUMBLOB NULL);
ALTER TABLE t CHANGE COLUMN a a LONGTEXT NOT NULL; ALTER TABLE t CHANGE COLUMN a a LONGTEXT NOT NULL;
...@@ -270,6 +281,7 @@ CREATE TABLE t (a MEDIUMBLOB NOT NULL); ...@@ -270,6 +281,7 @@ CREATE TABLE t (a MEDIUMBLOB NOT NULL);
ALTER TABLE t CHANGE COLUMN a a LONGTEXT NOT NULL; ALTER TABLE t CHANGE COLUMN a a LONGTEXT NOT NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version ERROR 42000: Table 't' uses an extension that doesn't exist in this XYZ version
ALTER TABLE t CHANGE COLUMN a a LONGBLOB NOT NULL; ALTER TABLE t CHANGE COLUMN a a LONGBLOB NOT NULL;
ERROR 42000: Table 't' uses an extension that doesn't exist in this MySQL version
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a LONGBLOB NULL); CREATE TABLE t (a LONGBLOB NULL);
ALTER TABLE t CHANGE COLUMN a a TINYTEXT NULL; ALTER TABLE t CHANGE COLUMN a a TINYTEXT NULL;
......
...@@ -37,6 +37,7 @@ CREATE TABLE t (a TINYBLOB NULL); ...@@ -37,6 +37,7 @@ CREATE TABLE t (a TINYBLOB NULL);
--replace_regex /MariaDB/XYZ/ /MySQL/XYZ/ --replace_regex /MariaDB/XYZ/ /MySQL/XYZ/
--error ER_UNSUPPORTED_EXTENSION --error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a TEXT NULL; ALTER TABLE t CHANGE COLUMN a a TEXT NULL;
--error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a BLOB NULL; ALTER TABLE t CHANGE COLUMN a a BLOB NULL;
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a TINYBLOB NULL); CREATE TABLE t (a TINYBLOB NULL);
...@@ -59,12 +60,14 @@ CREATE TABLE t (a TINYBLOB NOT NULL); ...@@ -59,12 +60,14 @@ CREATE TABLE t (a TINYBLOB NOT NULL);
--replace_regex /MariaDB/XYZ/ /MySQL/XYZ/ --replace_regex /MariaDB/XYZ/ /MySQL/XYZ/
--error ER_UNSUPPORTED_EXTENSION --error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a TEXT NOT NULL; ALTER TABLE t CHANGE COLUMN a a TEXT NOT NULL;
--error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a BLOB NOT NULL; ALTER TABLE t CHANGE COLUMN a a BLOB NOT NULL;
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a TINYBLOB NULL); CREATE TABLE t (a TINYBLOB NULL);
--replace_regex /MariaDB/XYZ/ /MySQL/XYZ/ --replace_regex /MariaDB/XYZ/ /MySQL/XYZ/
--error ER_UNSUPPORTED_EXTENSION --error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a MEDIUMTEXT NULL; ALTER TABLE t CHANGE COLUMN a a MEDIUMTEXT NULL;
--error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a MEDIUMBLOB NULL; ALTER TABLE t CHANGE COLUMN a a MEDIUMBLOB NULL;
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a TINYBLOB NULL); CREATE TABLE t (a TINYBLOB NULL);
...@@ -87,12 +90,14 @@ CREATE TABLE t (a TINYBLOB NOT NULL); ...@@ -87,12 +90,14 @@ CREATE TABLE t (a TINYBLOB NOT NULL);
--replace_regex /MariaDB/XYZ/ /MySQL/XYZ/ --replace_regex /MariaDB/XYZ/ /MySQL/XYZ/
--error ER_UNSUPPORTED_EXTENSION --error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a MEDIUMTEXT NOT NULL; ALTER TABLE t CHANGE COLUMN a a MEDIUMTEXT NOT NULL;
--error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a MEDIUMBLOB NOT NULL; ALTER TABLE t CHANGE COLUMN a a MEDIUMBLOB NOT NULL;
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a TINYBLOB NULL); CREATE TABLE t (a TINYBLOB NULL);
--replace_regex /MariaDB/XYZ/ /MySQL/XYZ/ --replace_regex /MariaDB/XYZ/ /MySQL/XYZ/
--error ER_UNSUPPORTED_EXTENSION --error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a LONGTEXT NULL; ALTER TABLE t CHANGE COLUMN a a LONGTEXT NULL;
--error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a LONGBLOB NULL; ALTER TABLE t CHANGE COLUMN a a LONGBLOB NULL;
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a TINYBLOB NULL); CREATE TABLE t (a TINYBLOB NULL);
...@@ -115,6 +120,7 @@ CREATE TABLE t (a TINYBLOB NOT NULL); ...@@ -115,6 +120,7 @@ CREATE TABLE t (a TINYBLOB NOT NULL);
--replace_regex /MariaDB/XYZ/ /MySQL/XYZ/ --replace_regex /MariaDB/XYZ/ /MySQL/XYZ/
--error ER_UNSUPPORTED_EXTENSION --error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a LONGTEXT NOT NULL; ALTER TABLE t CHANGE COLUMN a a LONGTEXT NOT NULL;
--error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a LONGBLOB NOT NULL; ALTER TABLE t CHANGE COLUMN a a LONGBLOB NOT NULL;
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a BLOB NULL); CREATE TABLE t (a BLOB NULL);
...@@ -181,6 +187,7 @@ CREATE TABLE t (a BLOB NULL); ...@@ -181,6 +187,7 @@ CREATE TABLE t (a BLOB NULL);
--replace_regex /MariaDB/XYZ/ /MySQL/XYZ/ --replace_regex /MariaDB/XYZ/ /MySQL/XYZ/
--error ER_UNSUPPORTED_EXTENSION --error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a MEDIUMTEXT NULL; ALTER TABLE t CHANGE COLUMN a a MEDIUMTEXT NULL;
--error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a MEDIUMBLOB NULL; ALTER TABLE t CHANGE COLUMN a a MEDIUMBLOB NULL;
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a BLOB NULL); CREATE TABLE t (a BLOB NULL);
...@@ -203,12 +210,14 @@ CREATE TABLE t (a BLOB NOT NULL); ...@@ -203,12 +210,14 @@ CREATE TABLE t (a BLOB NOT NULL);
--replace_regex /MariaDB/XYZ/ /MySQL/XYZ/ --replace_regex /MariaDB/XYZ/ /MySQL/XYZ/
--error ER_UNSUPPORTED_EXTENSION --error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a MEDIUMTEXT NOT NULL; ALTER TABLE t CHANGE COLUMN a a MEDIUMTEXT NOT NULL;
--error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a MEDIUMBLOB NOT NULL; ALTER TABLE t CHANGE COLUMN a a MEDIUMBLOB NOT NULL;
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a BLOB NULL); CREATE TABLE t (a BLOB NULL);
--replace_regex /MariaDB/XYZ/ /MySQL/XYZ/ --replace_regex /MariaDB/XYZ/ /MySQL/XYZ/
--error ER_UNSUPPORTED_EXTENSION --error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a LONGTEXT NULL; ALTER TABLE t CHANGE COLUMN a a LONGTEXT NULL;
--error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a LONGBLOB NULL; ALTER TABLE t CHANGE COLUMN a a LONGBLOB NULL;
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a BLOB NULL); CREATE TABLE t (a BLOB NULL);
...@@ -231,6 +240,7 @@ CREATE TABLE t (a BLOB NOT NULL); ...@@ -231,6 +240,7 @@ CREATE TABLE t (a BLOB NOT NULL);
--replace_regex /MariaDB/XYZ/ /MySQL/XYZ/ --replace_regex /MariaDB/XYZ/ /MySQL/XYZ/
--error ER_UNSUPPORTED_EXTENSION --error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a LONGTEXT NOT NULL; ALTER TABLE t CHANGE COLUMN a a LONGTEXT NOT NULL;
--error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a LONGBLOB NOT NULL; ALTER TABLE t CHANGE COLUMN a a LONGBLOB NOT NULL;
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a MEDIUMBLOB NULL); CREATE TABLE t (a MEDIUMBLOB NULL);
...@@ -329,6 +339,7 @@ CREATE TABLE t (a MEDIUMBLOB NULL); ...@@ -329,6 +339,7 @@ CREATE TABLE t (a MEDIUMBLOB NULL);
--replace_regex /MariaDB/XYZ/ /MySQL/XYZ/ --replace_regex /MariaDB/XYZ/ /MySQL/XYZ/
--error ER_UNSUPPORTED_EXTENSION --error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a LONGTEXT NULL; ALTER TABLE t CHANGE COLUMN a a LONGTEXT NULL;
--error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a LONGBLOB NULL; ALTER TABLE t CHANGE COLUMN a a LONGBLOB NULL;
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a MEDIUMBLOB NULL); CREATE TABLE t (a MEDIUMBLOB NULL);
...@@ -351,6 +362,7 @@ CREATE TABLE t (a MEDIUMBLOB NOT NULL); ...@@ -351,6 +362,7 @@ CREATE TABLE t (a MEDIUMBLOB NOT NULL);
--replace_regex /MariaDB/XYZ/ /MySQL/XYZ/ --replace_regex /MariaDB/XYZ/ /MySQL/XYZ/
--error ER_UNSUPPORTED_EXTENSION --error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a LONGTEXT NOT NULL; ALTER TABLE t CHANGE COLUMN a a LONGTEXT NOT NULL;
--error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN a a LONGBLOB NOT NULL; ALTER TABLE t CHANGE COLUMN a a LONGBLOB NOT NULL;
DROP TABLE t; DROP TABLE t;
CREATE TABLE t (a LONGBLOB NULL); CREATE TABLE t (a LONGBLOB NULL);
......
...@@ -1017,19 +1017,6 @@ static bool change_field_type_is_supported(Field *old_field, Field *new_field, T ...@@ -1017,19 +1017,6 @@ static bool change_field_type_is_supported(Field *old_field, Field *new_field, T
// varchar(X) -> varchar(Y) and varbinary(X) -> varbinary(Y) expansion where X < 256 <= Y // varchar(X) -> varchar(Y) and varbinary(X) -> varbinary(Y) expansion where X < 256 <= Y
// the ALTER_COLUMN_TYPE handler flag is set for these cases // the ALTER_COLUMN_TYPE handler flag is set for these cases
return change_varchar_length_is_supported(old_field, new_field, table, altered_table, ha_alter_info, ctx); return change_varchar_length_is_supported(old_field, new_field, table, altered_table, ha_alter_info, ctx);
} else if (old_type == MYSQL_TYPE_BLOB) {
// blob -> longer blob
if (new_type == MYSQL_TYPE_BLOB && old_field->binary() && new_field->binary() &&
old_field->pack_length() <= new_field->pack_length()) {
return true;
}
// text -> longer text
if (new_type == MYSQL_TYPE_BLOB && !old_field->binary() && !new_field->binary() &&
old_field->pack_length() <= new_field->pack_length() &&
old_field->charset()->number == new_field->charset()->number) {
return true;
}
return false;
} else } else
return false; return false;
} }
......
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