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fixed length of current database name if it is dropped (BUG#1986)

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mysql-test/r/query_cache.result:
  test of BUG#1986
mysql-test/t/query_cache.test:
  test of BUG#1986
sql/sql_db.cc:
  as far as we remove db name we should remove its length
This commit is contained in:
unknown
2003-12-04 23:57:10 +02:00
parent 2e939d77df
commit 4eb6fd537b
3 changed files with 24 additions and 2 deletions
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8
mysql-test/r/query_cache.result
View File

@ -809,4 +809,12 @@ show status like "Qcache_queries_in_cache";
Variable_name Value Variable_name Value
Qcache_queries_in_cache 4 Qcache_queries_in_cache 4
DROP TABLE t1; DROP TABLE t1;
CREATE TABLE t1 (a int(1));
CREATE DATABASE mysqltest;
USE mysqltest;
DROP DATABASE mysqltest;
SELECT * FROM test.t1;
a
USE test;
DROP TABLE t1;
SET GLOBAL query_cache_size=0; SET GLOBAL query_cache_size=0;

13
mysql-test/t/query_cache.test
View File

@ -585,4 +585,17 @@ show status like "Qcache_queries_in_cache";
# Keep things tidy # Keep things tidy
# #
DROP TABLE t1; DROP TABLE t1;
#
# DROP current database test
#
CREATE TABLE t1 (a int(1));
CREATE DATABASE mysqltest;
USE mysqltest;
DROP DATABASE mysqltest;
SELECT * FROM test.t1;
USE test;
DROP TABLE t1;
SET GLOBAL query_cache_size=0; SET GLOBAL query_cache_size=0;

5
sql/sql_db.cc
View File

@ -409,7 +409,7 @@ exit:
when the slave is replicating a DROP DATABASE: when the slave is replicating a DROP DATABASE:
- garbage characters in the error message: - garbage characters in the error message:
"Error 'Can't drop database 'test2'; database doesn't exist' on query "Error 'Can't drop database 'test2'; database doesn't exist' on query
'h4zI<7A>'" 'h4zI<7A><EFBFBD>'"
- segfault - segfault
- hang in "free(vio)" (yes!) in the I/O or SQL slave threads (so slave - hang in "free(vio)" (yes!) in the I/O or SQL slave threads (so slave
server hangs at shutdown etc). server hangs at shutdown etc).
@ -418,7 +418,8 @@ exit:
{ {
if (!(thd->slave_thread)) /* a slave thread will free it itself */ if (!(thd->slave_thread)) /* a slave thread will free it itself */
x_free(thd->db); x_free(thd->db);
thd->db= 0; thd->db= 0;
thd->db_length= 0;
} }
exit2: exit2:
VOID(pthread_mutex_unlock(&LOCK_mysql_create_db)); VOID(pthread_mutex_unlock(&LOCK_mysql_create_db));