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due to merge

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This commit is contained in:
Horst Hunger
2009-01-23 19:26:59 +01:00
parent 2775f86773 93991b6be9
commit 02c57a12f3
4 changed files with 24 additions and 0 deletions
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5
mysql-test/r/user_var.result
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@ -399,4 +399,9 @@ select @lastid != id, @lastid, @lastid := id from t1;
0 3 3 0 3 3
1 3 4 1 3 4
drop table t1; drop table t1;
CREATE TABLE t1 (i INT);
CREATE TRIGGER t_after_insert AFTER INSERT ON t1 FOR EACH ROW SET @bug42188 = 10;
INSERT INTO t1 VALUES (1);
INSERT INTO t1 VALUES (1);
DROP TABLE t1;
End of 5.1 tests End of 5.1 tests

11
mysql-test/t/user_var.test
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@ -285,4 +285,15 @@ set @lastid=-1;
select @lastid != id, @lastid, @lastid := id from t1; select @lastid != id, @lastid, @lastid := id from t1;
drop table t1; drop table t1;
#
# Bug#42188: crash and/or memory corruption with user variables in trigger
#
CREATE TABLE t1 (i INT);
CREATE TRIGGER t_after_insert AFTER INSERT ON t1 FOR EACH ROW SET @bug42188 = 10;
INSERT INTO t1 VALUES (1);
--change_user
INSERT INTO t1 VALUES (1);
DROP TABLE t1;
--echo End of 5.1 tests --echo End of 5.1 tests

7
sql/item_func.cc
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@ -3808,6 +3808,13 @@ static user_var_entry *get_variable(HASH *hash, LEX_STRING &name,
} }
void Item_func_set_user_var::cleanup()
{
Item_func::cleanup();
entry= NULL;
}
bool Item_func_set_user_var::set_entry(THD *thd, bool create_if_not_exists) bool Item_func_set_user_var::set_entry(THD *thd, bool create_if_not_exists)
{ {
if (entry && thd->thread_id == entry_thread_id) if (entry && thd->thread_id == entry_thread_id)

1
sql/item_func.h
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@ -1357,6 +1357,7 @@ public:
void save_org_in_field(Field *field) { (void)save_in_field(field, 1, 0); } void save_org_in_field(Field *field) { (void)save_in_field(field, 1, 0); }
bool register_field_in_read_map(uchar *arg); bool register_field_in_read_map(uchar *arg);
bool set_entry(THD *thd, bool create_if_not_exists); bool set_entry(THD *thd, bool create_if_not_exists);
void cleanup();
}; };