X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fmidi_playlist.cc;fp=libs%2Fardour%2Fmidi_playlist.cc;h=67764d66aeefa5880d5c1a6f6ccd6c7336ba1925;hb=0f5a73a7fd00015b9d95bf05f5f4266ae782d469;hp=4c200f60b541d88595816087a8e6e670421eabdf;hpb=90fcdcfde9459f3bc65c48568dc2a5faf4cd7708;p=ardour.git

diff --git a/libs/ardour/midi_playlist.cc b/libs/ardour/midi_playlist.cc
index 4c200f60b5..67764d66ae 100644
--- a/libs/ardour/midi_playlist.cc
+++ b/libs/ardour/midi_playlist.cc
@@ -92,7 +92,7 @@ MidiPlaylist::~MidiPlaylist ()
 
 template<typename Time>
 struct EventsSortByTimeAndType {
-    bool operator() (Evoral::Event<Time>* a, Evoral::Event<Time>* b) {
+    bool operator() (const Evoral::Event<Time>* a, const Evoral::Event<Time>* b) {
 	    if (a->time() == b->time()) {
 		    if (parameter_is_midi ((AutomationType)a->event_type()) &&
 		        parameter_is_midi ((AutomationType)b->event_type())) {