[skywhopper]

Is it clear that the “dark bytes” are “useless” debug information? It sounds like it’s just stuff not in the symbol table.

[tyingq]

I did keep waiting for some point in the blog post where they would null out the "dark bytes" and see if/how the binary runs.

[jeffbee]

It won't. If you try to remove this information your program will crash as soon as the GC runs or someone calls systemstack, i.e. pretty much instantly.