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| author | Thomas Munro <tmunro@postgresql.org> | 2023-09-13 14:32:24 +1200 |
|---|---|---|
| committer | Thomas Munro <tmunro@postgresql.org> | 2023-09-13 15:06:07 +1200 |
| commit | f899c7f1eae43a95ae5d221e754283d8fcfe8bc1 (patch) | |
| tree | f042fe8d8e9073dee302ece3afe74d7c116f7f35 /src/backend/executor/nodeBitmapOr.c | |
| parent | 3f7b7d9df2dc7aa14add615c7af8fbc1092509b9 (diff) | |
| download | postgresql-f899c7f1eae43a95ae5d221e754283d8fcfe8bc1.tar.gz postgresql-f899c7f1eae43a95ae5d221e754283d8fcfe8bc1.zip | |
Fix exception safety bug in typcache.c.
If an out-of-memory error was thrown at an unfortunate time,
ensure_record_cache_typmod_slot_exists() could leak memory and leave
behind a global state that produced an infinite loop on the next call.
Fix by merging RecordCacheArray and RecordIdentifierArray into a single
array. With only one allocation or re-allocation, there is no
intermediate state.
Back-patch to all supported releases.
Reported-by: "James Pang (chaolpan)" <chaolpan@cisco.com>
Reviewed-by: Michael Paquier <michael@paquier.xyz>
Discussion: https://postgr.es/m/PH0PR11MB519113E738814BDDA702EDADD6EFA%40PH0PR11MB5191.namprd11.prod.outlook.com
Diffstat (limited to 'src/backend/executor/nodeBitmapOr.c')
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