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Bug#45168: assertion with convert() and empty set value

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The assertion in String::copy was added in order to avoid
valgrind errors when the destination was the same as the source.
Eased restriction to allow for the case when str == NULL.


mysql-test/r/func_set.result:
  Bug#45168: Test result
mysql-test/t/func_set.test:
  Bug#45168: Test case
sql/item_strfunc.cc:
  Bug#45168: Code cleanup and grammar correction in comment
sql/sql_string.cc:
  Bug#45168: Fix
This commit is contained in:
Martin Hansson
2009-06-16 16:36:15 +02:00
parent ed7f0f3023
commit aa8677bc32
4 changed files with 40 additions and 6 deletions
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13
mysql-test/t/func_set.test
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@@ -84,3 +84,16 @@ engine=myisam default charset=latin1;
insert into t1 values (''),(null),(null),(''),(''),('');
select find_in_set(f1,f1) as a from t1,(select find_in_set(f1,f1) as b from t1) a;
drop table t1;
#
# Bug#45168: assertion with convert() and empty set value
#
CREATE TABLE t1( a SET('a', 'b', 'c') );
CREATE TABLE t2( a SET('a', 'b', 'c') );
INSERT INTO t1 VALUES ('d');
INSERT INTO t2 VALUES ('');
SELECT CONVERT( a USING latin1 ) FROM t1;
SELECT CONVERT( a USING latin1 ) FROM t2;
DROP TABLE t1, t2;