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Álvaro Herrera b1635c1666 pg_stat_statements: Fix handling of duplicate constant locations ... Two or more constants can have the same location. We handled this correctly for non squashed constants, but failed to do it if squashed (resulting in out-of-bounds memory access), because the code structure became broken by commit 0f65f3eec478: we failed to update 'last_loc' correctly when skipping these squashed constants. The simplest fix seems to be to get rid of 'last_loc' altogether -- in hindsight, it's quite pointless. Also, when ignoring a constant because of this, make sure to fulfill fill_in_constant_lengths's duty of setting its length to -1. Lastly, we can use == instead of <= because the locations have been sorted beforehand, so the < case cannot arise. Co-authored-by: Sami Imseih <samimseih@gmail.com> Co-authored-by: Dmitry Dolgov <9erthalion6@gmail.com> Reported-by: Konstantin Knizhnik <knizhnik@garret.ru> Backpatch-through: 18 Discussion: https://www.postgresql.org/message-id/2b91e358-0d99-43f7-be44-d2d4dbce37b3%40garret.ru		2 months ago
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expected	pg_stat_statements: Fix handling of duplicate constant locations	2 months ago
sql	pg_stat_statements: Fix handling of duplicate constant locations	2 months ago
t	Update copyright for 2025	12 months ago
.gitignore	…
Makefile	Introduce squashing of constant lists in query jumbling	9 months ago
meson.build	Introduce squashing of constant lists in query jumbling	9 months ago
pg_stat_statements--1.0--1.1.sql	…
pg_stat_statements--1.1--1.2.sql	…
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pg_stat_statements--1.8--1.9.sql	Merge v1.10 of pg_stat_statements into v1.9	5 years ago
pg_stat_statements--1.9--1.10.sql	Add JIT counters to pg_stat_statements	4 years ago
pg_stat_statements--1.10--1.11.sql	Track statement entry timestamp in contrib/pg_stat_statements	2 years ago
pg_stat_statements--1.11--1.12.sql	pg_stat_statements: Add wal_buffers_full	10 months ago
pg_stat_statements.c	pg_stat_statements: Fix handling of duplicate constant locations	2 months ago
pg_stat_statements.conf	Revert "pg_stat_statements: Add coverage for entry_dealloc()"	2 years ago
pg_stat_statements.control	pg_stat_statements: Add columns to track parallel worker activity	1 year ago