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AggInfo objects might be referenced even after the sqlite3Select() function

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that created them has exited.  So AggInfo cannot be a stack variable.  And it
must not be freed until the Parse object is destroyed.

FossilOrigin-Name: 3c840b4df306e2db1da08673e9ede973b4cb6d2b3f9eeeab5835e39452ee3056
This commit is contained in:
drh
2020-06-07 20:18:07 +00:00
parent 896366282d
commit bf7909734a
7 changed files with 103 additions and 84 deletions
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11
test/window1.test
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@ -1877,7 +1877,16 @@ do_execsql_test 60.1 {
SELECT EXISTS(SELECT count(*) OVER() FROM t1 ORDER BY sum(x) OVER());
} {1}
# 2020-06-07 test case generated by dbsqlfuzz showing how an AggInfo
# object might be referenced after the sqlite3Select() call that created
# it returns. This proves the need to persist all AggInfo objects until
# the Parse object is destroyed.
#
reset_db
do_execsql_test 61.1 {
CREATE TABLE t1(a);
INSERT INTO t1 VALUES(5),(NULL),('seventeen');
SELECT (SELECT max(x)OVER(ORDER BY x) % min(x)OVER(ORDER BY CASE x WHEN 889 THEN x WHEN x THEN x END)) FROM (SELECT (SELECT sum(CAST(a IN(SELECT (SELECT max(x)OVER(ORDER BY CASE x WHEN 889 THEN 299 WHEN 863 THEN 863 END)) FROM (SELECT (SELECT sum(CAST((SELECT (SELECT max(x)OVER(ORDER BY x) / min(x)OVER(ORDER BY CASE x WHEN 889 THEN 299 WHEN -true THEN 863 END)) FROM (SELECT (SELECT sum(CAST(a IN(SELECT (SELECT max(x) & sum ( a )OVER(ORDER BY CASE x WHEN -8 THEN 299 WHEN 863 THEN 863 END)) FROM (SELECT (SELECT sum(CAST(a AS )) FROM t1) AS x FROM t1)) AS t1 )) FROM t1) AS x FROM t1)) AS x )) FROM t1) AS x FROM t1)) AS real)) FROM t1) AS x FROM t1);
} {{} {} {}}
finish_test