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authorTomas Vondra <tomas.vondra@postgresql.org>2022-01-23 03:36:55 +0100
committerTomas Vondra <tomas.vondra@postgresql.org>2022-01-23 04:05:08 +0100
commit72ac4d71b54fdac5efc9ecfc23663f26c20ddcf9 (patch)
tree2d5e366382a0b4bd92b3d5b9f3fd2fc704724724
parenta192243c75be0f142f829b3e73548bc7cbd3b90d (diff)
downloadpostgresql-72ac4d71b54fdac5efc9ecfc23663f26c20ddcf9.tar.gz
postgresql-72ac4d71b54fdac5efc9ecfc23663f26c20ddcf9.zip
Correct type of front_pathkey to PathKey
In sort_inner_and_outer we iterate a list of PathKey elements, but the variable is declared as (List *). This mistake is benign, because we only pass the pointer to lcons() and never dereference it. This exists since ~2004, but it's confusing. So fix and backpatch to all supported branches. Backpatch-through: 10 Discussion: https://postgr.es/m/bf3a6ea1-a7d8-7211-0669-189d5c169374%40enterprisedb.com
-rw-r--r--src/backend/optimizer/path/joinpath.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/backend/optimizer/path/joinpath.c b/src/backend/optimizer/path/joinpath.c
index c5640b4d3a1..6e25fbeba1c 100644
--- a/src/backend/optimizer/path/joinpath.c
+++ b/src/backend/optimizer/path/joinpath.c
@@ -1243,7 +1243,7 @@ sort_inner_and_outer(PlannerInfo *root,
foreach(l, all_pathkeys)
{
- List *front_pathkey = (List *) lfirst(l);
+ PathKey *front_pathkey = (PathKey *) lfirst(l);
List *cur_mergeclauses;
List *outerkeys;
List *innerkeys;