From 016a2c695a55f32a9df0e77ee9142c86c9a8f70d Mon Sep 17 00:00:00 2001 From: Lei Yang Date: Tue, 17 Mar 2026 20:51:28 +0800 Subject: [PATCH] dlist_check: add check for nodes pointing to themselves --- src/backend/lib/ilist.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/src/backend/lib/ilist.c b/src/backend/lib/ilist.c index d238858e24f..27dac796fd2 100644 --- a/src/backend/lib/ilist.c +++ b/src/backend/lib/ilist.c @@ -91,7 +91,8 @@ dlist_check(const dlist_head *head) cur->next == NULL || cur->prev == NULL || cur->prev->next != cur || - cur->next->prev != cur) + cur->next->prev != cur || + cur->next == cur) elog(ERROR, "doubly linked list is corrupted"); } @@ -102,7 +103,8 @@ dlist_check(const dlist_head *head) cur->next == NULL || cur->prev == NULL || cur->prev->next != cur || - cur->next->prev != cur) + cur->next->prev != cur || + cur->prev == cur) elog(ERROR, "doubly linked list is corrupted"); } } -- 2.34.1