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As our implementation of MCP411 nears completion and we begin to solicit testing, it's no longer reasonable to expect testers to type or remember `BikeshedIntrinsicFrom`. The name degrades the ease-of-reading of documentation, and the overall experience of using compiler safe transmute. Tentatively, we'll instead adopt `TransmuteFrom`. This name seems to be the one most likely to be stabilized, after discussion on Zulip [1]. We may want to revisit the ordering of `Src` and `Dst` before stabilization, at which point we'd likely consider `TransmuteInto` or `Transmute`. [1] https://rust-lang.zulipchat.com/#narrow/stream/216762-project-safe-transmute/topic/What.20should.20.60BikeshedIntrinsicFrom.60.20be.20named.3F
31 lines
513 B
Rust
31 lines
513 B
Rust
//@ known-bug: rust-lang/rust#126267
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#![feature(transmutability)]
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#![crate_type = "lib"]
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pub enum ApiError {}
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pub struct TokioError {
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b: bool,
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}
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pub enum Error {
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Api { source: ApiError },
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Ethereum,
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Tokio { source: TokioError },
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}
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mod assert {
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use std::mem::TransmuteFrom;
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pub fn is_transmutable<Src, Dst>()
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where
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Dst: TransmuteFrom<Src>, // safety is NOT assumed
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{
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}
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}
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fn test() {
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struct Src;
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type Dst = Error;
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assert::is_transmutable::<Src, Dst>();
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}
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