| Ticket Hash: | 093420fc0eb7cba77b05230b2e79f27c74d91dcc | ||
| Title: | Virtual Machine references an uninitialized register | ||
| Status: | Fixed | Type: | Code_Defect |
| Severity: | Important | Priority: | Immediate |
| Subsystem: | Unknown | Resolution: | Fixed |
| Last Modified: |
2018-04-06 12:55:10 7.25 years ago |
Created: |
2018-04-05 11:47:39 7.25 years ago |
| Version Found In: | 3.23.0 | ||
| User Comments: | ||||
drh added on 2018-04-05 11:47:39:
(text/x-fossil-wiki)
In the following SQL, the virtual machine references an uninitialized register. This is harmless, but it still needs to be fixed. <blockquote><verbatim> 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=''; </verbatim></blockquote> 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. | ||||