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| author | Peter Geoghegan <pg@bowt.ie> | 2020-06-25 10:55:26 -0700 |
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| committer | Peter Geoghegan <pg@bowt.ie> | 2020-06-25 10:55:26 -0700 |
| commit | 8c2010f12344ed8834c6f63406a78e5843ebec69 (patch) | |
| tree | 58914891612ea35fc1f26028ca793491efd0640e /src/tutorial/funcs.c | |
| parent | 185c6bc4aef1201b7d0f2c4e9c8893c4a663dfd4 (diff) | |
| download | postgresql-8c2010f12344ed8834c6f63406a78e5843ebec69.tar.gz postgresql-8c2010f12344ed8834c6f63406a78e5843ebec69.zip | |
Fix misuse of table_index_fetch_tuple_check().
Commit 0d861bbb, which added deduplication to nbtree, had
_bt_check_unique() pass a TID to table_index_fetch_tuple_check() that
isn't safe to mutate. table_index_fetch_tuple_check()'s tid argument is
modified when the TID in question is not the latest visible tuple in a
hot chain, though this wasn't documented.
To fix, go back to using a local copy of the TID in _bt_check_unique(),
and update comments above table_index_fetch_tuple_check().
Backpatch: 13-, where B-Tree deduplication was introduced.
Diffstat (limited to 'src/tutorial/funcs.c')
0 files changed, 0 insertions, 0 deletions