From 6a3619aaadbb4c333e16ac940e4d32ba6836b43d Mon Sep 17 00:00:00 2001
From: Jamie McClymont <jamiemcclymont@catalyst.net.nz>
Date: Thu, 10 Jan 2019 16:51:40 +1300
Subject: [PATCH] Swallow errors when updating instance ranges on TZ changes

---
 inc/instance_range.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/inc/instance_range.php b/inc/instance_range.php
index c1cdee17..a2ea3565 100644
--- a/inc/instance_range.php
+++ b/inc/instance_range.php
@@ -26,7 +26,12 @@ function update_instance_ranges(string $collection_dav_name) {
   );
 
   while( $row = $qry->Fetch() ) {
-    $range = getVCalendarRange(new vCalendar($row->caldav_data), $row->timezone);
+    try {
+      $range = getVCalendarRange(new vCalendar($row->caldav_data), $row->timezone);
+    } catch (Exception $e) {
+      dbg_error_log('instance_range','Error parsing calendar item, skipping update');
+      continue;
+    }
 
     $new_start = isset($range->from)  ? $range->from->UTC()  : null;
     $new_end   = isset($range->until) ? $range->until->UTC() : null;