From 5c8b76ed6cfbbcee4cbaac0b72beab7291044e4f Mon Sep 17 00:00:00 2001
From: Evan You <evan@vuejs.org>
Date: Fri, 20 Sep 2024 19:59:39 +0800
Subject: [PATCH] fix(reactivity): fix dev-only memory leak by updating
 dep.subsHead on sub removal

ref #11956
---
 packages/reactivity/src/effect.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/packages/reactivity/src/effect.ts b/packages/reactivity/src/effect.ts
index b8dd62a0f..64e4e94be 100644
--- a/packages/reactivity/src/effect.ts
+++ b/packages/reactivity/src/effect.ts
@@ -413,6 +413,10 @@ function removeSub(link: Link) {
     // was previous tail, point new tail to prev
     dep.subs = prevSub
   }
+  if (__DEV__ && dep.subsHead === link) {
+    // was previous head, point new head to next
+    dep.subsHead = nextSub
+  }
 
   if (!dep.subs && dep.computed) {
     // last subscriber removed