From: Bas van Meurs <bvanmeurs1985@gmail.com>
Date: Fri, 4 Dec 2020 23:03:10 +0000 (+0100)
Subject: fix(runtime-core): component mount anchor memory leak (#2459)
X-Git-Tag: v3.0.5~33
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3867bb4c14131ef94098a62bffba97a5b7d1fe66;p=thirdparty%2Fvuejs%2Fcore.git

fix(runtime-core): component mount anchor memory leak (#2459)

fix #2458
---

diff --git a/packages/runtime-core/src/renderer.ts b/packages/runtime-core/src/renderer.ts
index 3baaf2405e..da86040d0a 100644
--- a/packages/runtime-core/src/renderer.ts
+++ b/packages/runtime-core/src/renderer.ts
@@ -1395,8 +1395,9 @@ function baseCreateRenderer(
         }
         // onVnodeMounted
         if ((vnodeHook = props && props.onVnodeMounted)) {
+          const scopedInitialVNode = initialVNode
           queuePostRenderEffect(() => {
-            invokeVNodeHook(vnodeHook!, parent, initialVNode)
+            invokeVNodeHook(vnodeHook!, parent, scopedInitialVNode)
           }, parentSuspense)
         }
         // activated hook for keep-alive roots.
@@ -1410,6 +1411,9 @@ function baseCreateRenderer(
           queuePostRenderEffect(a, parentSuspense)
         }
         instance.isMounted = true
+
+        // #2458: deference mount-only object parameters to prevent memleaks
+        initialVNode = container = anchor = null as any
       } else {
         // updateComponent
         // This is triggered by mutation of component's own state (next: null)