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Postgres REL_18_4

Postgres: REL_18_4 Release

Release date:
May 11, 2026
Previous version:
REL_18_3 (released February 23, 2026)
Magnitude:
4,053 Diff Delta
Contributors:
20 total committers
Data confidence:
Commits:
113 impacting commits

113 Commits in this Release

Ordered by the degree to which they evolved the repo in this version.

Fix more multibyte issues in ltree
Authored February 26, 2026
Consider collation when proving subquery uniqueness
Authored May 5, 2026
Make palloc_array() and friends safe against integer overflow
Authored May 11, 2026
Fix HAVING-to-WHERE pushdown with nondeterministic collations
Authored May 1, 2026
Harden astreamer tar parsing logic against archives it can't handle
Authored April 2, 2026
Add pg_add_size_overflow() and friends
Authored May 11, 2026
test_custom_types: Test module with fancy custom data types
Authored March 2, 2026
Fix slotsync worker blocking promotion when stuck in wait
Authored April 8, 2026
Consider opfamily and collation when removing redundant GROUP BY columns
Authored May 8, 2026
Add missing connection validation in ECPG
Authored May 1, 2026
Fix incorrect NEW references to generated columns in rule rewriting
Authored April 21, 2026
Guard against overly-long numeric formatting symbols from locale
Authored April 22, 2026
Fix multixact backwards-compatibility with CHECKPOINT race condition
Authored March 23, 2026
Prevent buffer overrun in spell.c's CheckAffix()
Authored April 22, 2026
Allow PG_PRINTF_ATTRIBUTE to be different in C and C++ code
Authored February 25, 2026
Fix size underestimation of DSA pagemap for odd-sized segments
Authored March 9, 2026
Fix integer overflow in nodeWindowAgg.c
Authored April 9, 2026
Fix premature NULL lag reporting in pg_stat_replication
Authored March 26, 2026
In pg_dumpall, don't skip role GRANTs with dangling grantor OIDs
Authored March 2, 2026
Add tests for low-level PGLZ [de]compression routines
Authored April 14, 2026
Fix null-bitmap combining in array_agg_array_combine()
Authored April 6, 2026
Fix HAVING-to-WHERE pushdown for simple-CASE form
Authored May 8, 2026
Fix assorted places that need to use palloc_array()
Authored May 11, 2026
Prevent some buffer overruns in spell.c's parsing of affix files
Authored April 22, 2026
Consider collation when proving uniqueness from unique indexes
Authored May 5, 2026
Fix unsafe RTE_GROUP removal in simplify_EXISTS_query
Authored February 25, 2026
Fix incremental JSON parser numeric token reassembly across chunks
Authored April 9, 2026
Fix unbounded recursive handling of SSL/GSS in ProcessStartupPacket()
Authored May 11, 2026
basic_archive: Allow archive directory to be missing at startup
Authored March 2, 2026
Fix some cases of indirectly casting away const
Authored February 25, 2026
Fix multiple bugs in astreamer pipeline code
Authored March 23, 2026
Prevent buffer overrun in unicode_normalize()
Authored May 11, 2026
jit: Stop emitting lifetime.end for LLVM 22
Authored April 2, 2026
pg_upgrade: Use max_protocol_version=3.0 for older servers
Authored February 24, 2026
Prevent restore of incremental backup from bloating VM fork
Authored March 9, 2026
jit: No backport::SectionMemoryManager for LLVM 22
Authored April 3, 2026
Check for unterminated strings when calling uloc_getLanguage()
Authored April 14, 2026
Fix WITHOUT OVERLAPS' interaction with domains
Authored April 7, 2026
Fix yet another bug in archive streamer with LZ4 decompression
Authored March 4, 2026
Use GetXLogInsertEndRecPtr in gistGetFakeLSN
Authored March 13, 2026

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Top Contributors in REL_18_4

tglsfdc
richard-guo-5f72
michaelpq
jeff-davis
adunstan
MasaoFujii
hlinnaka
robertmhaas
macdice
nathan-bossart

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