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Álvaro Herrera 16edc1b94f 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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cleanup.sql	…
cursors.sql	Show sizes of FETCH queries as constants in pg_stat_statements	6 months ago
dml.sql	…
entry_timestamp.sql	…
extended.sql	Make query jumbling also squash PARAM_EXTERN params	6 months ago
level_tracking.sql	Fix regression with location calculation of nested statements	7 months ago
oldextversions.sql	pg_stat_statements: Add counters for generic and custom plans	5 months ago
parallel.sql	…
plancache.sql	pg_stat_statements: Add counters for generic and custom plans	5 months ago
planning.sql	Revert support for improved tracking of nested queries	6 months ago
privileges.sql	…
select.sql	Fix squashing algorithm for query texts	6 months ago
squashing.sql	pg_stat_statements: Fix handling of duplicate constant locations	2 months ago
user_activity.sql	…
utility.sql	…
wal.sql	…