From 04d4091dfa551475998c351e09858e5ebdcf4482 Mon Sep 17 00:00:00 2001
From: Alan Jenkins <alan.christopher.jenkins@gmail.com>
Date: Mon, 30 Apr 2012 16:04:43 +0100
Subject: fix backtrace filtering

The backtrace was filtered to remove CI system files,
but the filter was buggy.  It would also filter out
application files which happened to contain the string "system"...
or ALL files, if the application directory is under /system/
(Perhaps the latter comes as a surprise, but it's explicitly
 mentioned in index.php and <http://codeigniter.com/wiki/mod_rewrite>).

Instead, we should test whether the file is underneath BASEPATH
(using realpath() to make sure we have the same sort of slashes).
---
 application/errors/error_php.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/application/errors/error_php.php b/application/errors/error_php.php
index 3855720de..b76dc8a9e 100644
--- a/application/errors/error_php.php
+++ b/application/errors/error_php.php
@@ -40,12 +40,15 @@
 	<p>Backtrace: </p>
 	<?php foreach(debug_backtrace() as $error): ?>
 
-		<?php if(isset($error['file']) &&  ! stristr($error['file'], SYSDIR)): ?>
+		<?php if(isset($error['file']) &&
+		         strpos($error['file'], realpath(BASEPATH)) !== 0): ?>
+
 			<p style="margin-left:10px">
 			File: <?php echo $error['file'] ?><br />
 			Line: <?php echo $error['line'] ?><br />
 			Function: <?php echo $error['function'] ?>
 			</p>
+
 		<?php endif ?>
 
 	<?php endforeach ?></p>
-- 
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