From f65a5cbcde51ef7da0ff5617dcab1a164b9a217b Mon Sep 17 00:00:00 2001
From: Vladimir Kurchatkin <vladimir.kurchatkin@gmail.com>
Date: Sat, 1 Nov 2014 01:15:12 +0300
Subject: [PATCH] smalloc: check if obj has external data

PR-URL: https://github.com/joyent/node/pull/8655
Reviewed-by: Trevor Norris <trev.norris@gmail.com>
---
 lib/smalloc.js              | 2 ++
 test/simple/test-smalloc.js | 8 ++++++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/lib/smalloc.js b/lib/smalloc.js
index ba042c6c4c..fd82ba8c42 100644
--- a/lib/smalloc.js
+++ b/lib/smalloc.js
@@ -86,6 +86,8 @@ function dispose(obj) {
     throw new TypeError('obj must be an Object');
   if (util.isBuffer(obj))
     throw new TypeError('obj cannot be a Buffer');
+  if (!smalloc.hasExternalData(obj))
+    throw new Error('obj has no external array data');
 
   smalloc.dispose(obj);
 }
diff --git a/test/simple/test-smalloc.js b/test/simple/test-smalloc.js
index ea6f7bf4ad..091f5aa7e0 100644
--- a/test/simple/test-smalloc.js
+++ b/test/simple/test-smalloc.js
@@ -314,11 +314,15 @@ for (var i = 0; i < 5; i++)
 
 // only allow object to be passed to dispose
 assert.throws(function() {
-  alloc.dispose(null);
+  smalloc.dispose(null);
 });
 
 
 // can't dispose a Buffer
 assert.throws(function() {
-  alloc.dispose(new Buffer());
+  smalloc.dispose(new Buffer());
+});
+
+assert.throws(function() {
+  smalloc.dispose({});
 });