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2014-02-25
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| 21:56 | • Fixed ticket [8c63ff0e]: Incorrect query result on a UNION ALL plus 6 other changes (artifact: 45daabfe user: drh) | |
| 21:55 | Do not allow temporary registers to be in use across an OP_Yield within a co-routine. Fix for ticket [8c63ff0eca81a9132d8]. (check-in: 97a8c973 user: drh tags: trunk) | |
| 19:38 | Make sure temporary registers used within a co-routine are not also used outside of that co-routine, in order to prevent concurrent use of the same register for two different things. Ticket [8c63ff0eca81a9132d8] (Closed-Leaf check-in: cc5eda54 user: drh tags: tkt-8c63ff0eca) | |
| 18:46 | • Add attachment b2.txt to ticket [8c63ff0e] (artifact: dc9c8fcf user: drh) | |
| 18:46 | • New ticket [8c63ff0e] Incorrect query result on a UNION ALL. (artifact: d0eedcee user: drh) | |
| Ticket Hash: | 8c63ff0eca81a9132d8d67b31cd6ae9712a2cc6f | |||
| Title: | Incorrect query result on a UNION ALL | |||
| Status: | Fixed | Type: | Code_Defect | |
| Severity: | Severe | Priority: | Immediate | |
| Subsystem: | Unknown | Resolution: | Fixed | |
| Last Modified: | 2014-02-25 21:56:00 | |||
| Version Found In: | 3.8.3.1 | |||
| User Comments: | ||||
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drh added on 2014-02-25 18:46:01:
Temp registers can sometimes be used in concurrent co-routines, resulting in a incorrect answer. The attached script demonstrations one manifestation of this. The attachment fails with any check-in after the introduction of the NGQP. But the register allocation problem predates that change. The cut-over of the NGQP only makes the attached test case work. Probably other test cases can be made to fail for versions prior to the NGQP. | ||||
Attachments:
- b2.txt [download] added by drh on 2014-02-25 18:46:49. [details]