From 8d1f1186caf227edcd33dc60295b2ff50189dacc Mon Sep 17 00:00:00 2001
From: kriskowal <kris.kowal@cixar.com>
Date: Fri, 30 Apr 2010 17:30:14 -0700
Subject: [PATCH] Fixed/Completed buffer copy range checks.

---
 src/node_buffer.cc | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/node_buffer.cc b/src/node_buffer.cc
index 62c667b40c..d757b9623c 100644
--- a/src/node_buffer.cc
+++ b/src/node_buffer.cc
@@ -262,17 +262,17 @@ Handle<Value> Buffer::Copy(const Arguments &args) {
             "sourceEnd < sourceStart")));
   }
 
-  if (target_start >= target->length()) {
+  if (target_start < 0 || target_start > target->length()) {
     return ThrowException(Exception::Error(String::New(
             "targetStart out of bounds")));
   }
 
-  if (source_start >= source->length()) {
+  if (source_start < 0 || source_start > source->length()) {
     return ThrowException(Exception::Error(String::New(
             "sourceStart out of bounds")));
   }
 
-  if (source_end > source->length()) {
+  if (source_end < 0 || source_end > source->length()) {
     return ThrowException(Exception::Error(String::New(
             "sourceEnd out of bounds")));
   }