$NetBSD: patch-kcalcore_icalformat_p.cpp,v 1.1 2018/04/26 07:55:21 markd Exp $

work with libical-3

--- kcalcore/icalformat_p.cpp.orig	2015-06-24 12:43:14.000000000 +0000
+++ kcalcore/icalformat_p.cpp
@@ -2301,7 +2301,6 @@ icaltimetype ICalFormatImpl::writeICalDa
     t.second = 0;
 
     t.is_date = 1;
-    t.is_utc = 0;
     t.zone = 0;
 
     return t;
@@ -2323,7 +2322,9 @@ icaltimetype ICalFormatImpl::writeICalDa
         t.second = datetime.time().second();
     }
     t.zone = 0;   // zone is NOT set
-    t.is_utc = datetime.isUtc() ? 1 : 0;
+    if (datetime.isUtc()) {
+        t = icaltime_convert_to_zone(t, icaltimezone_get_utc_timezone());
+    }
 
     // _dumpIcaltime( t );
 
@@ -2398,7 +2399,7 @@ icalproperty *ICalFormatImpl::writeICalD
     }
 
     KTimeZone ktz;
-    if (!t.is_utc) {
+    if (!icaltime_is_utc(t)) {
         ktz = dt.timeZone();
     }
 
@@ -2431,7 +2432,7 @@ KDateTime ICalFormatImpl::readICalDateTi
 //  _dumpIcaltime( t );
 
     KDateTime::Spec timeSpec;
-    if (t.is_utc  ||  t.zone == icaltimezone_get_utc_timezone()) {
+    if (icaltime_is_utc(t)  ||  t.zone == icaltimezone_get_utc_timezone()) {
         timeSpec = KDateTime::UTC;   // the time zone is UTC
         utc = false;    // no need to convert to UTC
     } else {