diff options
| -rw-r--r-- | mysql-test/r/func_time.result | 12 | ||||
| -rw-r--r-- | mysql-test/t/func_time.test | 18 | ||||
| -rw-r--r-- | sql/sql_string.cc | 7 |
3 files changed, 36 insertions, 1 deletions
diff --git a/mysql-test/r/func_time.result b/mysql-test/r/func_time.result index fab0bf01f58..07a46f92469 100644 --- a/mysql-test/r/func_time.result +++ b/mysql-test/r/func_time.result @@ -688,3 +688,15 @@ t1 CREATE TABLE `t1` ( `from_unixtime(1) + 0` double(23,6) default NULL ) ENGINE=MyISAM DEFAULT CHARSET=latin1 drop table t1; +SET NAMES latin1; +SET character_set_results = NULL; +SHOW VARIABLES LIKE 'character_set_results'; +Variable_name Value +character_set_results +CREATE TABLE testBug8868 (field1 DATE, field2 VARCHAR(32) CHARACTER SET BINARY); +INSERT INTO testBug8868 VALUES ('2006-09-04', 'abcd'); +SELECT DATE_FORMAT(field1,'%b-%e %l:%i%p') as fmtddate, field2 FROM testBug8868; +fmtddate field2 +Sep-4 12:00AM abcd +DROP TABLE testBug8868; +SET NAMES DEFAULT; diff --git a/mysql-test/t/func_time.test b/mysql-test/t/func_time.test index b232fb14e1e..8a7f8792081 100644 --- a/mysql-test/t/func_time.test +++ b/mysql-test/t/func_time.test @@ -358,4 +358,22 @@ create table t1 select now() - now(), curtime() - curtime(), show create table t1; drop table t1; +# +# 21913: DATE_FORMAT() Crashes mysql server if I use it through +# mysql-connector-j driver. +# + +SET NAMES latin1; +SET character_set_results = NULL; +SHOW VARIABLES LIKE 'character_set_results'; + +CREATE TABLE testBug8868 (field1 DATE, field2 VARCHAR(32) CHARACTER SET BINARY); +INSERT INTO testBug8868 VALUES ('2006-09-04', 'abcd'); + +SELECT DATE_FORMAT(field1,'%b-%e %l:%i%p') as fmtddate, field2 FROM testBug8868; + +DROP TABLE testBug8868; + +SET NAMES DEFAULT; + # End of 4.1 tests diff --git a/sql/sql_string.cc b/sql/sql_string.cc index 939ffe8d9d2..aaa85b0d96c 100644 --- a/sql/sql_string.cc +++ b/sql/sql_string.cc @@ -248,6 +248,10 @@ bool String::copy(const char *str,uint32 arg_length, CHARSET_INFO *cs) 0 No conversion needed 1 Either character set conversion or adding leading zeros (e.g. for UCS-2) must be done + + NOTE + to_cs may be NULL for "no conversion" if the system variable + character_set_results is NULL. */ bool String::needs_conversion(uint32 arg_length, @@ -256,7 +260,8 @@ bool String::needs_conversion(uint32 arg_length, uint32 *offset) { *offset= 0; - if ((to_cs == &my_charset_bin) || + if (!to_cs || + (to_cs == &my_charset_bin) || (to_cs == from_cs) || my_charset_same(from_cs, to_cs) || ((from_cs == &my_charset_bin) && |