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Fix hang/crash with Boolean full-text search against an unindexed field for

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which the query contained more words than we allocated space. (Bug #7858)


myisam/ft_boolean_search.c:
  Fix calculation of max number of elements -- "words" may not have spaces
  between them.
mysql-test/t/fulltext.test:
  Modify test to be specific to reported bug (fix for old bug wasn't quite enough)
mysql-test/r/fulltext.result:
  Update results
This commit is contained in:
unknown 2005-06-17 21:44:17 +02:00
parent 6de6d3ad5c
commit 61b2a6b083
3 changed files with 4 additions and 4 deletions
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2
myisam/ft_boolean_search.c
View file

@ -398,7 +398,7 @@ FT_INFO * ft_init_boolean_search(MI_INFO *info, uint keynr, byte *query,
Hack: instead of init_queue, we'll use reinit queue to be able
to alloc queue with alloc_root()
*/
res=ftb->queue.max_elements=1+query_len/(min(ft_min_word_len,2)+1);
res=ftb->queue.max_elements=1+query_len/2;
if (!(ftb->queue.root=
(byte **)alloc_root(&ftb->mem_root, (res+1)*sizeof(void*))))
goto err;

2
mysql-test/r/fulltext.result
View file

@ -338,7 +338,7 @@ insert into t2 values (3, 1, 'xxbuz');
select * from t1 join t2 using(`t1_id`) where match (t1.name, t2.name) against('xxfoo' in boolean mode);
t1_id name t2_id t1_id name
1 data1 1 1 xxfoo
select * from t2 where match name against ('a* b* c* d* e* f*' in boolean mode);
select * from t2 where match name against ('*a*b*c*d*e*f*' in boolean mode);
t2_id t1_id name
drop table t1,t2;
create table t1 (a text, fulltext key (a));

4
mysql-test/t/fulltext.test
View file

@ -253,9 +253,9 @@ insert into t2 values (3, 1, 'xxbuz');
select * from t1 join t2 using(`t1_id`) where match (t1.name, t2.name) against('xxfoo' in boolean mode);
#
# bug with many short (< ft_min_word_len) words in boolean search
# Bug #7858: bug with many short (< ft_min_word_len) words in boolean search
#
select * from t2 where match name against ('a* b* c* d* e* f*' in boolean mode);
select * from t2 where match name against ('*a*b*c*d*e*f*' in boolean mode);
drop table t1,t2;
#