JuliaLang/julia — comment on commit 7bb95bca20412c35007324b87b891ebc23551d9e
File:  line 0
By StefanKarpinski:

I tried adding this to `sysimg.j`:

```
compile_hint(dup2, (FileDes, FileDes))
compile_hint(close, (FileDes,))
```

No speedup, however.