That error is coming not from Str, but rather from csoundDie/csoundMessage.
If message contains percent chars, random parts of the stack can be printed, so yes, you need to pass "%s" everywhere. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1240227 Title: Sync csound 1:6.00.1~dfsg-2 (universe) from Debian unstable (main) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/csound/+bug/1240227/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs