From: Trevor Norris <trev.norris@gmail.com>
Date: Mon, 16 Feb 2015 21:09:50 +0000 (-0700)
Subject: buffer: fix pool offset adjustment
X-Git-Tag: v1.3.0~11
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c6fd2c5e95350c4aece2300f77b3942d8fd55daa;p=platform%2Fupstream%2Fnodejs.git

buffer: fix pool offset adjustment

If the Buffer allocation isn't a slice then there's no need to adjust
the pool offset after realloc'ing the space available.

Fixes: 6462519 "buffer, doc: misc. fix and cleanup"
---

diff --git a/lib/buffer.js b/lib/buffer.js
index 3e69090..bb30475 100644
--- a/lib/buffer.js
+++ b/lib/buffer.js
@@ -84,7 +84,9 @@ function Buffer(subject, encoding) {
       var prevLen = this.length;
       this.length = len;
       truncate(this, this.length);
-      poolOffset -= (prevLen - len);
+      // Only need to readjust the poolOffset if the allocation is a slice.
+      if (this.parent != undefined)
+        poolOffset -= (prevLen - len);
     }
 
   } else if (subject instanceof Buffer) {