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
Branch
------
REL_15_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/a26cc0334f8b02c949b68d6ba9061eeb1fa75498
Modified Files
--------------
src/backend/utils/cache/typcache.c | 52 +++++++++++++++++++-------------------
src/tools/pgindent/typedefs.list | 1 +
2 files changed, 27 insertions(+), 26 deletions(-)