postgresql/contrib/pg_trgm
Tom Lane ad87bf3552 Avoid some other O(N^2) hazards in list manipulation.
In the same spirit as 6301c3ada, fix some more places where we were
using list_delete_first() in a loop and thereby risking O(N^2)
behavior.  It's not clear that the lists manipulated in these spots
can get long enough to be really problematic ... but it's not clear
that they can't, either, and the fixes are simple enough.

As before, back-patch to v13.

Discussion: https://postgr.es/m/CD2F0E7F-9822-45EC-A411-AE56F14DEA9F@amazon.com
2021-11-01 16:24:40 -04:00
..
data
expected
sql
.gitignore
Makefile
pg_trgm--1.0--1.1.sql
pg_trgm--1.1--1.2.sql
pg_trgm--1.2--1.3.sql
pg_trgm--1.3--1.4.sql
pg_trgm--1.3.sql
pg_trgm--1.4--1.5.sql
pg_trgm--1.5--1.6.sql
pg_trgm.control
trgm_gin.c
trgm_gist.c
trgm_op.c
trgm_regexp.c Avoid some other O(N^2) hazards in list manipulation. 2021-11-01 16:24:40 -04:00
trgm.h