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Merge salvation.intern.azundris.com:/home/tnurnberg/21913/my41-21913

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into  salvation.intern.azundris.com:/home/tnurnberg/21913/my50-21913

21913: DATE_FORMAT() Crashes mysql server if I use it through mysql-connector-j driver.

Variable character_set_results can legally be NULL (for "no conversion.")
This could result in a NULL deref that crashed the server.  Fixed.

(Although ran some additional precursory tests to see whether I could break
anything else, but no breakage so far.)


mysql-test/r/func_time.result:
  Bug#21913: DATE_FORMAT() Crashes mysql server if I use it through mysql-connector-j driver.
  
  Prove DATE_FORMAT() no longer crashes the server when character_set_results is
  NULL (which is a legal value and means, "no conversion").
mysql-test/t/func_time.test:
  Bug#21913: DATE_FORMAT() Crashes mysql server if I use it through mysql-connector-j driver.
  
  Prove DATE_FORMAT() no longer crashes the server when character_set_results is
  NULL (which is a legal value and means, "no conversion").
sql/sql_string.cc:
  Bug#21913: DATE_FORMAT() Crashes mysql server if I use it through mysql-connector-j driver.
  
  Avoid NULL deref in my_charset_same() -- if !to_cs, we won't need to compare
  because it is magic for, "no conversion."
This commit is contained in:
unknown
2006-09-04 07:01:15 +02:00
parent 9e145670c4 617189958b
commit 8ce43f8d23
3 changed files with 36 additions and 1 deletions
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12
mysql-test/r/func_time.result
View File

@ -960,3 +960,15 @@ id day id day
3 2005-07-01 3 2005-07-15
DROP TABLE t1,t2;
set time_zone= @@global.time_zone;
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;

18
mysql-test/t/func_time.test
View File

@ -534,3 +534,21 @@ DROP TABLE t1,t2;
# Restore timezone to default
set time_zone= @@global.time_zone;
#
# 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;