From e971005638f41e7b0f67e91f6e85552e164e13ce Mon Sep 17 00:00:00 2001
From: adamk <adamk@chromium.org>
Date: Fri, 13 Nov 2015 09:10:37 -0800
Subject: [PATCH] Run the materialized literal reindexer on default parameter
 initializers

R=rossberg@chromium.org
BUG=chromium:554865
LOG=n

Review URL: https://codereview.chromium.org/1442653004

Cr-Commit-Position: refs/heads/master@{#31989}
---
 src/parser.cc                          |  1 +
 test/mjsunit/regress/regress-554865.js | 10 ++++++++++
 2 files changed, 11 insertions(+)
 create mode 100644 test/mjsunit/regress/regress-554865.js

diff --git a/src/parser.cc b/src/parser.cc
index 22efbac101..2ee9444054 100644
--- a/src/parser.cc
+++ b/src/parser.cc
@@ -4148,6 +4148,7 @@ void ParserTraits::ReindexLiterals(const ParserFormalParameters& parameters) {
 
     for (const auto p : parameters.params) {
       if (p.pattern != nullptr) reindexer.Reindex(p.pattern);
+      if (p.initializer != nullptr) reindexer.Reindex(p.initializer);
     }
 
     if (parameters.has_rest) {
diff --git a/test/mjsunit/regress/regress-554865.js b/test/mjsunit/regress/regress-554865.js
new file mode 100644
index 0000000000..9b66d79b35
--- /dev/null
+++ b/test/mjsunit/regress/regress-554865.js
@@ -0,0 +1,10 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// Flags: --harmony-default-parameters
+
+(function() {
+  var x = {};
+  ((y = [42]) => assertEquals(42, y[0]))();
+})();