From 9b9eb0850b7d970070ae42089fbdfe15a36cc966 Mon Sep 17 00:00:00 2001
From: Michael Gage <gage@math.rochester.edu>
Date: Tue, 19 Jun 2012 11:17:53 -0400
Subject: [PATCH] Add use Carp; to file to prevent the program from dying when
 "croak" is called.

Minor fix.  There is an underlying issue, or possible issue, where there is a warning because
of a conflict between a login name and a cookie, possibly left over or stale.  Quitting the browser
fixes this. Is this a bug or a feature?  I suspect it's new behavior with the added LTI authentication.
---
 lib/WeBWorK/Authen.pm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/WeBWorK/Authen.pm b/lib/WeBWorK/Authen.pm
index ca2ca6deb0..84b459c739 100644
--- a/lib/WeBWorK/Authen.pm
+++ b/lib/WeBWorK/Authen.pm
@@ -57,6 +57,7 @@ use WeBWorK::Debug;
 use WeBWorK::Utils qw/writeCourseLog runtime_use/;
 use WeBWorK::Localize;
 use URI::Escape;
+use Carp;
 
 use mod_perl;
 use constant MP2 => ( exists $ENV{MOD_PERL_API_VERSION} and $ENV{MOD_PERL_API_VERSION} >= 2 );