|12:55||• Fixed ticket [093420fc]: Virtual Machine references an uninitialized register plus 5 other changes (artifact: 31842ae5 user: drh)|
|16:26||Fix an instance where an uninitialized VM register might be accessed. Fix for [093420fc0]. This problem was found by OSSFuzz. (check-in: a3b02db7 user: dan tags: trunk)|
|11:47||• New ticket [093420fc] Virtual Machine references an uninitialized register. (artifact: 4524671d user: drh)|
|Title:||Virtual Machine references an uninitialized register|
|Last Modified:||2018-04-06 12:55:10|
|Version Found In:||3.23.0|
drh added on 2018-04-05 11:47:39:
In the following SQL, the virtual machine references an uninitialized register. This is harmless, but it still needs to be fixed.
CREATE TABLE t1(b, c, PRIMARY KEY(b,c)) WITHOUT ROWID; CREATE UNIQUE INDEX t1b ON t1(b); UPDATE t1 SET b=1 WHERE b='';
This problem has existed in the code since support for WITHOUT ROWID tables was added with SQLite 3.8.2 (2013-12-06). The problem was discovered by OSSFuzz.