What (if any) changes are made to the upstream allegro code for the Ubuntu package?

I'm having some trouble playing tracker files with Allegro, using the upstream package (on GitHub), but if I install it through Ubuntu's package, it plays fine. For reference, here is the code I'm using
https://pastebin.com/1UpwBA4i
Regular audio files play normally, but trying to play a tracker file causes it to segfault.