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Overview
| Comment: | Change the way a comparison used to detect corrupt databases in fts3 is done to avoid potential pointer overflow in 32-bit builds. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: | 95a9a39ff784b960b62dd6298e722a62 |
| User & Date: | dan 2018-12-24 13:34:36 |
References
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2018-12-26
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| 14:15 | Fix a problem with corrupt fts3 database detection introduced by [95a9a39f]. check-in: c80bb15b user: dan tags: trunk | |
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2018-12-24
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| 13:39 | Change the way a comparison used to detect corrupt databases in fts3 is done to avoid potential pointer overflow in 32-bit builds. Cherrypick of [95a9a39ff7]. check-in: 27199380 user: dan tags: branch-3.22 | |
Context
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2018-12-24
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| 15:22 | Copy some extra test infrastructure from the mutexfree-shmlock branch to trunk. check-in: 883337ff user: dan tags: trunk | |
| 15:15 | Merge latest trunk with this branch. Leaf check-in: 606b1ead user: dan tags: mutexfree-shmlock | |
| 13:39 | Change the way a comparison used to detect corrupt databases in fts3 is done to avoid potential pointer overflow in 32-bit builds. Cherrypick of [95a9a39ff7]. check-in: 27199380 user: dan tags: branch-3.22 | |
| 13:34 | Change the way a comparison used to detect corrupt databases in fts3 is done to avoid potential pointer overflow in 32-bit builds. check-in: 95a9a39f user: dan tags: trunk | |
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2018-12-23
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| 21:27 | Split the code generation for the RHS of IN operators and for SELECT and EXISTS expressions into two separate subroutines, because there is now little commonality between those to functions. This is intended to help make the code easier to read and maintain. check-in: 2b6494b1 user: drh tags: trunk | |
Changes
Changes to ext/fts3/fts3_write.c.
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pReader->aDoclist = pNext; pReader->pOffsetList = 0; /* Check that the doclist does not appear to extend past the end of the ** b-tree node. And that the final byte of the doclist is 0x00. If either ** of these statements is untrue, then the data structure is corrupt. */ if( (&pReader->aNode[pReader->nNode] - pReader->aDoclist)<pReader->nDoclist || (pReader->nPopulate==0 && pReader->aDoclist[pReader->nDoclist-1]) ){ return FTS_CORRUPT_VTAB; } return SQLITE_OK; } |
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1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 |
pReader->aDoclist = pNext; pReader->pOffsetList = 0; /* Check that the doclist does not appear to extend past the end of the ** b-tree node. And that the final byte of the doclist is 0x00. If either ** of these statements is untrue, then the data structure is corrupt. */ if( pReader->nDoclist-(pReader->aDoclist-pReader->aNode) > pReader->nNode || (pReader->nPopulate==0 && pReader->aDoclist[pReader->nDoclist-1]) ){ return FTS_CORRUPT_VTAB; } return SQLITE_OK; } |