Re: [PATCH 5/5] rust: error: Add from_kernel_result!() macro

[Miguel Ojeda]

On Sun, Feb 26, 2023 at 3:22 AM Boqun Feng <boqun.feng@xxxxxxxxx> wrote:
>
> Hmm.. looks like the `?` only "propagating them (the errors) to the
> calling *function*":
>
>         https://doc.rust-lang.org/reference/expressions/operator-expr.html#the-question-mark-operator
>
> , so this doesn't work as we expect:
>
>         https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=64c9039e1da2c436f9f4f5ea46e97e90
>
> Hope I didn't miss something subtle here..

There is `feature(try_blocks)` [1] for that:

    https://play.rust-lang.org/?version=nightly&mode=debug&edition=2021&gist=8f40663d2ad51e04a13f2da5c4580fc0

[1] https://github.com/rust-lang/rust/issues/31436.

Cheers,
Miguel