From a3decc4cb9515ea36aed3df7392a0aaf7467a27f Mon Sep 17 00:00:00 2001
From: Anna Henningsen <anna@addaleax.net>
Date: Mon, 27 Mar 2017 20:57:22 +0200
Subject: [PATCH] =?UTF-8?q?[squash]=20fix=20bug=20from=20targos=E2=80=99?=
 =?UTF-8?q?=20review?=
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---
 lib/v8.js                       | 7 ++++++-
 test/parallel/test-v8-serdes.js | 5 +++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/lib/v8.js b/lib/v8.js
index 7334a372a80ae7..7790f9b3343087 100644
--- a/lib/v8.js
+++ b/lib/v8.js
@@ -140,7 +140,12 @@ class DefaultSerializer extends Serializer {
     if (abView.constructor === Buffer) {
       i = bufferConstructorIndex;
     } else {
-      i = arrayBufferViewTypeToIndex.get(objectToString(abView));
+      const tag = objectToString(abView);
+      i = arrayBufferViewTypeToIndex.get(tag);
+
+      if (i === undefined) {
+        throw this._getDataCloneError(`Unknown host object type: ${tag}`);
+      }
     }
     this.writeUint32(i);
     this.writeUint32(abView.byteLength);
diff --git a/test/parallel/test-v8-serdes.js b/test/parallel/test-v8-serdes.js
index 428883bb300a83..84037b6f8c8f6f 100644
--- a/test/parallel/test-v8-serdes.js
+++ b/test/parallel/test-v8-serdes.js
@@ -99,6 +99,11 @@ const objects = [
   }, /foobar/);
 }
 
+{
+  assert.throws(() => v8.serialize(process.stdin._handle),
+                /^Error: Unknown host object type: \[object .*\]$/);
+}
+
 {
   const buf = Buffer.from('ff0d6f2203666f6f5e007b01', 'hex');