From ab0e4dd42f433a5b0ed501c0a3daebc108ed1941 Mon Sep 17 00:00:00 2001
From: gustav_delius <gustav_delius>
Date: Wed, 24 Nov 2004 09:16:39 +0000
Subject: [PATCH] If a block is unknown then ignore it rather than throwing
 fatal error. In future one might want to have a dummy block that is displayed
 in this case to alert the user to the fact that some block code is missing.

---
 lib/blocklib.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/blocklib.php b/lib/blocklib.php
index 59af30d340c..3d26dee8073 100644
--- a/lib/blocklib.php
+++ b/lib/blocklib.php
@@ -198,7 +198,10 @@ function blocks_print_group(&$page, &$instances) {
             continue;
         }
 
-        $obj = block_instance($block->name, $instance);
+        if (!$obj = block_instance($block->name, $instance)) {
+            // Invalid block
+            continue;
+        }
 
         if ($isediting) {
             $options = 0;