From ab5128112dece685aa1d62c668f29d7b863905ae Mon Sep 17 00:00:00 2001
From: Jean-Michel Vedrine <vedrine@vedrine.org>
Date: Fri, 24 May 2019 19:07:18 +0200
Subject: Uninitialized array in combinable

---
 combinable/combinable.php | 1 +
 1 file changed, 1 insertion(+)

(limited to 'combinable/combinable.php')

diff --git a/combinable/combinable.php b/combinable/combinable.php
index cbc06e7..650f49d 100644
--- a/combinable/combinable.php
+++ b/combinable/combinable.php
@@ -138,6 +138,7 @@ class qtype_combined_combinable_algebra extends qtype_combined_combinable_text_e
 
     public function data_to_form($context, $fileoptions) {
         $answers = array('answer' => array());
+        $variables = array('variable' => array(), 'varmin' => array(), 'varmax' => array());
         if ($this->questionrec !== null) {
             foreach ($this->questionrec->options->answers as $answer) {
                 $answers['answer'][] = $answer->answer;
-- 
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