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1ad218f3af
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
30 lines
616 B
Rust
30 lines
616 B
Rust
//@ known-bug: rust-lang/rust#126377
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#![feature(effects)]
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#![feature(generic_const_exprs)]
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mod assert {
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use std::mem::{Assume, TransmuteFrom};
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pub fn is_transmutable<
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Src,
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Dst,
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const ASSUME_ALIGNMENT: bool,
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const ASSUME_LIFETIMES: bool,
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const ASSUME_SAFETY: bool,
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const ASSUME_VALIDITY: bool,
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>()
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where
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Dst: TransmuteFrom<
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Src,
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{ }
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>,
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{}
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}
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const fn from_options() -> Assume {
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#[repr(C)] struct Src;
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#[repr(C)] struct Dst;
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assert::is_transmutable::<Src, Dst, {0u8}, false, false, false>();
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}
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