From 0ed24f3a0516627b19eeb7abb6265809bc55a973 Mon Sep 17 00:00:00 2001
From: Max Kellermann <mk@cm4all.com>
Date: Thu, 2 Dec 2021 14:57:48 +0100
Subject: [PATCH] util/IntrusiveList: disallow copying IntrusiveListHook

---
 src/util/IntrusiveList.hxx | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/util/IntrusiveList.hxx b/src/util/IntrusiveList.hxx
index a016c63e0..14f8f6679 100644
--- a/src/util/IntrusiveList.hxx
+++ b/src/util/IntrusiveList.hxx
@@ -49,6 +49,11 @@ protected:
 	IntrusiveListNode siblings;
 
 public:
+	IntrusiveListHook() noexcept = default;
+
+	IntrusiveListHook(const IntrusiveListHook &) = delete;
+	IntrusiveListHook &operator=(const IntrusiveListHook &) = delete;
+
 	void unlink() noexcept {
 		siblings.next->prev = siblings.prev;
 		siblings.prev->next = siblings.next;