slavapestov/factor — comment on commit c536c84c13686c2329baaca883f6b3a851cd6e74
File:  line 0
By jckarter:

@slavapestov One suspicious thing in the Factor backtrace is the `scan` value for the callstack entry on

```text

frame: 112e97fa8
executing: kernel.private:set-context-object
scan: -1
word/quot addr: 101c42b2c
word/quot xt: 10eb04e50
return address: 10eb04e50
```

scan should be >= 0 or f, shouldn't it? Is this a quirk in the way primitive words are jit-ed? Could it break `scrub_return_address` or `general_error`?