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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
23 lines
522 B
Rust
23 lines
522 B
Rust
#![crate_type = "lib"]
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#![feature(transmutability)]
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#![allow(dead_code)]
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mod assert {
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use std::mem::{Assume, TransmuteFrom};
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pub fn is_maybe_transmutable<Src, Dst>()
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where
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Dst: TransmuteFrom<
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Src,
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{ Assume { alignment: true, lifetimes: true, safety: true, validity: true } },
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>,
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{
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}
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}
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fn test() {
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type NaughtyLenArray = [u32; 3.14159]; //~ ERROR mismatched types
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type JustUnit = ();
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assert::is_maybe_transmutable::<JustUnit, NaughtyLenArray>();
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}
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