1 files changed, 1 insertions, 0 deletions

diff --git a/lib/message.cc b/lib/message.cc
index 8f9e68a..6a5cfd6 100644
--- a/lib/message.cc
+++ b/lib/message.cc
@@ -1,50 +1,51 @@
 #include <algorithm>
 #include <iterator>
+#include <cassert>
 #include <midillo/message.h>
 #include <midillo/util.h>
 #include <midillo/exception.h>
 
 namespace midillo {
     using std::copy;
     using std::ostream_iterator;
 
     unsigned long message_t::calculate_save_size(int& rs) const {
         unsigned long rv = 0;
         if(status!=rs) {
             ++rv;
             rs = status;
         }else if((status&status_event_bits)==status_system) {
             rs = -1;
             ++rv; // XXX: is it really needed?
         }
         switch(status&status_event_bits) {
             case status_note_off:
             case status_note_on:
             case status_polyphonic_key_pressure: // aka status_aftertouch
             case status_control_change:
             case status_pitch_wheel_change:
                 rv += 2; break;
             case status_program_change:
             case status_channel_pressure:
                 ++rv; break;
             case status_system:
                 switch(status&status_system_bits) {
                     case status_system_sysex:
                     case status_system_end_of_sysex:
                         rv += data.size()+1; break;
                     case status_system_MTC_quarter_frame:
                     case status_system_song_select:
                         ++rv; break;
                     case status_system_song_position_pointer:
                         rv += 2; break;
                     case status_system_tune_request:
                     case status_system_timing_clock: // aka status_system_midi_clock
                     case status_system_midi_tick:
                     case status_system_start: // aka status_system_midi_start
                     case status_system_stop: // aka status_system_midi_stop
                     case status_system_continue: // aka status_system_midi_continue
                     case status_system_active_sense:
                         break; /* XXX: ensure there is no data? */
                     case status_system_meta: // also reset, but not for the purpose of midi file
                         ++rv;
                         rv += calcVLsize(data.size());