From 037291e31f3d7eb86dc0997bd612e2ab4dd962d3 Mon Sep 17 00:00:00 2001
From: Anna Henningsen <anna@addaleax.net>
Date: Thu, 2 Jun 2016 02:13:04 +0200
Subject: [PATCH] src: make sure Utf8Value always zero-terminates

Make sure dereferencing a `Utf8Value` instance always returns
a zero-terminated string, even if the conversion to string failed.

The corresponding bugfix in the master branch happened in 44a40325da40
(https://github.com/nodejs/node/pull/6357).

Ref: https://github.com/nodejs/node/pull/6357
PR-URL: https://github.com/nodejs/node/pull/7101
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Myles Borins <myles.borins@gmail.com>
---
 src/util.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/util.cc b/src/util.cc
index 903fbbba134bd9..858e4b396534b3 100644
--- a/src/util.cc
+++ b/src/util.cc
@@ -5,6 +5,10 @@ namespace node {
 
 Utf8Value::Utf8Value(v8::Isolate* isolate, v8::Local<v8::Value> value)
     : length_(0), str_(str_st_) {
+  // Make sure result is always zero-terminated, even if conversion to string
+  // fails.
+  str_st_[0] = '\0';
+
   if (value.IsEmpty())
     return;