X-Git-Url: http://git.moodle.org/gw?p=moodle.git;a=blobdiff_plain;f=lib%2Fquestionlib.php;h=446fa95783badfefcdfccfc3846989b5fb1558f5;hp=fe52dfefff75181fde3ce96db35c8c6f9cf7acd9;hb=2a73f863ffc3b2da65355f1132485ed18ff3ae07;hpb=4f3632441a239b039669402446d5afc1fca3313a

diff --git a/lib/questionlib.php b/lib/questionlib.php
index fe52dfefff7..446fa95783b 100644
--- a/lib/questionlib.php
+++ b/lib/questionlib.php
@@ -1343,6 +1343,11 @@ function question_has_capability_on($question, $cap, $cachecat = -1) {
         }
         $question = $questions[$question];
     }
+    if (empty($question->category)) {
+        // This can happen when we have created a fake 'missingtype' question to
+        // take the place of a deleted question.
+        return false;
+    }
     if (!isset($categories[$question->category])) {
         if (!$categories[$question->category] = $DB->get_record('question_categories',
                 array('id'=>$question->category))) {