commit da12d29b40bc9ac10bcdeb5696b69c3ed0d3133f
author Ben Murdoch <benm@google.com> Thu Jun 02 14:46:10 2016 +0100
committer Dirk Vogt <dirk@fairphone.com> Fri Mar 17 16:06:11 2017 +0100
tree f11e06aa13d44d9524519b744c8a645b7578ffd9
parent 097c5b25f8b57b92e6c94f25383a883ff242344f

Upgrade V8 to 5.1.281.57  DO NOT MERGE

FPIIM-449

Change-Id: Id981b686b4d587ac31697662eb98bb34be42ad90
(cherry picked from commit 3b9bc31999c9787eb726ecdbfd5796bfdec32a18)

src/string-stream.cc

diff --git a/src/string-stream.cc b/src/string-stream.cc
index 43be8f1..02f6f1c 100644
--- a/src/string-stream.cc
+++ b/src/string-stream.cc
@@ -537,6 +537,7 @@
     for (PrototypeIterator iter(isolate, JSObject::cast(receiver),
                                 PrototypeIterator::START_AT_RECEIVER);
          !iter.IsAtEnd(); iter.Advance()) {
+      if (iter.GetCurrent()->IsJSProxy()) break;
       Object* key = iter.GetCurrent<JSObject>()->SlowReverseLookup(fun);
       if (!key->IsUndefined()) {
         if (!name->IsString() ||