From 3ca7f919e01617c4685efce285299aa351ff1dac Mon Sep 17 00:00:00 2001
From: Timo Tijhof <krinklemail@gmail.com>
Date: Fri, 11 Oct 2013 20:18:07 +0200
Subject: [PATCH] exception: Account for $call['file'] and $call['line'] being
 unset

Bug: 55634
Change-Id: I1173216cade73216848816f6bb51e54096abdfde
---
 includes/Exception.php | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/includes/Exception.php b/includes/Exception.php
index 39fe6f4b30..6724c4adec 100644
--- a/includes/Exception.php
+++ b/includes/Exception.php
@@ -737,7 +737,15 @@ class MWExceptionHandler {
 				}
 			}
 
-			$finalExceptionText .= "#{$i} {$call['file']}({$call['line']}): ";
+			if ( isset( $call['file'] ) && isset( $call['line'] ) ) {
+				$finalExceptionText .= "#{$i} {$call['file']}({$call['line']}): ";
+			} else {
+				// 'file' and 'line' are unset for calls via call_user_func (bug 55634)
+				// This matches behaviour of Exception::getTraceAsString to instead
+				// display "[internal function]".
+				$finalExceptionText .= "#{$i} [internal function]: ";
+			}
+
 			if ( isset( $call['class'] ) ) {
 				$finalExceptionText .= $call['class'] . $call['type'] . $call['function'];
 			} else {
-- 
2.20.1