Dan G Knutson (Nov 15 2024 at 23:35): Dan G Knutson (Nov 15 2024 at 23:35):When working on roc-ray examples, I ran into what looks like a couple of bugs with try and ? early returns with effectful functions. It seems like the backpassing-style continuation that gets generated is required to be pure. When using ? this makes multiple early returns from fallible effectful functions into a compile error. When using try, roc check passes but roc build crashes.
These are two minimal-ish repros in roc-ray examples. They can be run with:
just dev examples/early-return-question-mark.roc
just dev examples/early-return-try.roc
Edit: I made a github issue
Sam Mohr (Nov 15 2024 at 23:44):Known issue, I'll try to crack out a fix this weekend. Thanks for reporting, I kept saying I'd do it but didn't get around to it
Last updated: Jul 26 2025 at 12:14 UTC