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Fixes possible illegal writes/segfaults in compressToType0 (added a comment about the changes).

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svn-id: r21853
This commit is contained in:
Johannes Schickel 2006-04-13 23:13:56 +00:00
parent 1444a1ab9f
commit fac96dfb34
1 changed files with 9 additions and 3 deletions
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12
sound/midiparser_smf.cpp
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@ -238,9 +238,15 @@ bool MidiParser_SMF::loadMusic(byte *data, uint32 size) {
void MidiParser_SMF::compressToType0() {
// We assume that _buffer has been allocated
// to sufficient size for this operation.
byte *track_pos[16];
byte running_status[16];
uint32 track_timer[16];
// using 0xFF since it could write track_pos[0 to _num_tracks] here
// this would cause some illegal writes and could lead to segfaults
// (it crashed for some midis for me, they're not used in any game
// scummvm supports though). *Maybe* handle this in another way,
// it's at the moment only to be sure, that nothing goes wrong.
byte *track_pos[0xFF];
byte running_status[0xFF];
uint32 track_timer[0xFF];
uint32 delta;
int i;