From 9b4ca246e4ab63bdf8a8ee2ea35d1a5153ace906 Mon Sep 17 00:00:00 2001
From: Yury Delendik <ydelendik@mozilla.com>
Date: Thu, 16 May 2013 08:56:22 -0500
Subject: [PATCH] Ensure we don't modify the original PDF data when sanitizing
 TrueType

---
 src/fonts.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/fonts.js b/src/fonts.js
index e86be2d20..22d2a1cd9 100644
--- a/src/fonts.js
+++ b/src/fonts.js
@@ -3870,6 +3870,9 @@ var Font = (function FontClosure() {
         }
       }
 
+      // The following steps modify the original font data, making copy
+      font = new Stream(new Uint8Array(font.getBytes()));
+
       // Check that required tables are present
       var requiredTables = ['OS/2', 'cmap', 'head', 'hhea',
                              'hmtx', 'maxp', 'name', 'post'];