From 10456fa75814d5bb0cd0e8d76e58046e27490ff7 Mon Sep 17 00:00:00 2001
From: yushangjiang <504427021@qq.com>
Date: Tue, 25 Feb 2020 20:37:30 +0800
Subject: [PATCH] =?UTF-8?q?fix(transformElement):=20sub-component=E2=80=98?=
 =?UTF-8?q?s=20direct=20child=20should=20openBlock=20(fix=20#766)?=
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---
 packages/compiler-core/src/transforms/transformElement.ts | 5 +++++
 packages/runtime-core/src/helpers/renderSlot.ts           | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/packages/compiler-core/src/transforms/transformElement.ts b/packages/compiler-core/src/transforms/transformElement.ts
index 905268dee31..fe0a5afb7b9 100644
--- a/packages/compiler-core/src/transforms/transformElement.ts
+++ b/packages/compiler-core/src/transforms/transformElement.ts
@@ -134,6 +134,11 @@ export const transformElement: NodeTransform = (node, context) => {
         if (hasDynamicSlots) {
           patchFlag |= PatchFlags.DYNAMIC_SLOTS
         }
+
+        // sub-component‘s direct child should openBlock
+        for (let i = 0; i < node.children.length; i++) {
+          node.children[i].codegenNode!.isBlock = true
+        }
       } else if (node.children.length === 1) {
         const child = node.children[0]
         const type = child.type
diff --git a/packages/runtime-core/src/helpers/renderSlot.ts b/packages/runtime-core/src/helpers/renderSlot.ts
index a6c2d47e7aa..eb16bc02200 100644
--- a/packages/runtime-core/src/helpers/renderSlot.ts
+++ b/packages/runtime-core/src/helpers/renderSlot.ts
@@ -35,7 +35,7 @@ export function renderSlot(
       Fragment,
       { key: props.key },
       slot ? slot(props) : fallback || [],
-      slots._ ? PatchFlags.STABLE_FRAGMENT : PatchFlags.BAIL
+      slots._ ? 0 : PatchFlags.BAIL
     )
   )
 }