From ef8524ab7db8d64ac449ce74f5858aa9d91357ad Mon Sep 17 00:00:00 2001
From: Subhash <subhash_28@hotmail.com>
Date: Sat, 1 Dec 2018 11:03:59 +0530
Subject: [PATCH] fix(compiler):  wrap scoped slots v-if conditions in parens
 (#9119)

fix #9114
---
 src/compiler/codegen/index.js              |  2 +-
 test/unit/modules/compiler/codegen.spec.js | 11 +++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/compiler/codegen/index.js b/src/compiler/codegen/index.js
index f75d6300f66..d5b0aa09bd0 100644
--- a/src/compiler/codegen/index.js
+++ b/src/compiler/codegen/index.js
@@ -367,7 +367,7 @@ function genScopedSlot (
   const fn = `function(${String(el.slotScope)}){` +
     `return ${el.tag === 'template'
       ? el.if
-        ? `${el.if}?${genChildren(el, state) || 'undefined'}:undefined`
+        ? `(${el.if})?${genChildren(el, state) || 'undefined'}:undefined`
         : genChildren(el, state) || 'undefined'
       : genElement(el, state)
     }}`
diff --git a/test/unit/modules/compiler/codegen.spec.js b/test/unit/modules/compiler/codegen.spec.js
index 0758142ed27..57caa60ada1 100644
--- a/test/unit/modules/compiler/codegen.spec.js
+++ b/test/unit/modules/compiler/codegen.spec.js
@@ -208,6 +208,17 @@ describe('codegen', () => {
     )
   })
 
+  it('generate scoped slot with multiline v-if', () => {
+    assertCodegen(
+      '<foo><template v-if="\nshow\n" slot-scope="bar">{{ bar }}</template></foo>',
+      `with(this){return _c('foo',{scopedSlots:_u([{key:"default",fn:function(bar){return (\nshow\n)?[_v(_s(bar))]:undefined}}])})}`
+    )
+    assertCodegen(
+      '<foo><div v-if="\nshow\n" slot="foo" slot-scope="bar">{{ bar }}</div></foo>',
+      `with(this){return _c(\'foo\',{scopedSlots:_u([{key:"foo",fn:function(bar){return (\nshow\n)?_c(\'div\',{},[_v(_s(bar))]):_e()}}])})}`
+    )
+  })
+
   it('generate class binding', () => {
     // static
     assertCodegen(