I’d love to see what else is in your 3d emulation system. But I’d also like to see what causes that error. Do you have a ROM that will reliably reproduce it? Does the error result in a ROM crash or does it continue normally after the error?
Blib_buf is used for sound. I find it strange that it would error like that. It does lots of checks before hitting that line to insure it won’t read out of bounds.
If you’d like to file a bug on gitlab that would probably be easier to talk about code with.
I don’t think it’ll make a difference but: did you download an old version or do you have the latest version here.