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Overview
| Comment: | Ensure that the btree cursor is correctly set up prior to backing it up as part of a delete operation on a divider cell in an index. |
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| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
a3ea1a822d3a110f4f186f2fc8550f43 |
| User & Date: | drh 2019-01-26 23:34:50.536 |
Context
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2019-01-27
| ||
| 01:11 | Update fuzzcheck so that with the --load-dbsql options it screens its inputs to ensure that they are valid dbsqlfuzz cases. Add new dbsqlfuzz finds to the test/fuzzdata8.db database. (check-in: 004f7d9bbe user: drh tags: trunk) | |
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2019-01-26
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| 23:34 | Ensure that the btree cursor is correctly set up prior to backing it up as part of a delete operation on a divider cell in an index. (check-in: a3ea1a822d user: drh tags: trunk) | |
| 21:05 | Fix a broken assert() in fts3. Also some test script issues causing failures with builds that do not support fts3. (check-in: d59567dda2 user: dan tags: trunk) | |
Changes
Changes to src/btree.c.
| ︙ | ︙ | |||
8766 8767 8768 8769 8770 8771 8772 8773 8774 8775 8776 8777 8778 8779 |
** the cursor to the largest entry in the tree that is smaller than
** the entry being deleted. This cell will replace the cell being deleted
** from the internal node. The 'previous' entry is used for this instead
** of the 'next' entry, as the previous entry is always a part of the
** sub-tree headed by the child page of the cell being deleted. This makes
** balancing the tree following the delete operation easier. */
if( !pPage->leaf ){
rc = sqlite3BtreePrevious(pCur, 0);
assert( rc!=SQLITE_DONE );
if( rc ) return rc;
}
/* Save the positions of any other cursors open on this table before
** making any modifications. */
| > | 8766 8767 8768 8769 8770 8771 8772 8773 8774 8775 8776 8777 8778 8779 8780 |
** the cursor to the largest entry in the tree that is smaller than
** the entry being deleted. This cell will replace the cell being deleted
** from the internal node. The 'previous' entry is used for this instead
** of the 'next' entry, as the previous entry is always a part of the
** sub-tree headed by the child page of the cell being deleted. This makes
** balancing the tree following the delete operation easier. */
if( !pPage->leaf ){
pCur->skipNext = 0;
rc = sqlite3BtreePrevious(pCur, 0);
assert( rc!=SQLITE_DONE );
if( rc ) return rc;
}
/* Save the positions of any other cursors open on this table before
** making any modifications. */
|
| ︙ | ︙ |