From 009d6a8863fae350c8b95f1a6f0936f7b3fbf12d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ionu=C8=9B=20G=2E=20Stan?= <ionut.g.stan@gmail.com>
Date: Fri, 28 Oct 2011 14:27:41 +0300
Subject: [PATCH] Log error stacktrace only when available

Safari does not provide a `stack` property on Error instances.
---
 pdf.js | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/pdf.js b/pdf.js
index cb3ca3dc5..4a8b9a091 100644
--- a/pdf.js
+++ b/pdf.js
@@ -22,16 +22,15 @@ function warn(msg) {
 }
 
 function backtrace() {
-  var stackStr;
   try {
     throw new Error();
   } catch (e) {
-    stackStr = e.stack;
+    return e.stack ? e.stack.split('\n').slice(2).join('\n') : "";
   }
-  return stackStr.split('\n').slice(1).join('\n');
 }
 
 function error(msg) {
+  log("Error: " + msg);
   log(backtrace());
   throw new Error(msg);
 }