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
21 lines
360 B
Rust
21 lines
360 B
Rust
#![feature(transmutability)]
|
|
|
|
use std::mem::{Assume, TransmuteFrom};
|
|
|
|
#[repr(C)]
|
|
struct W<'a>(&'a ());
|
|
|
|
fn test<'a>()
|
|
where
|
|
W<'a>: TransmuteFrom<
|
|
(),
|
|
{ Assume { alignment: true, lifetimes: true, safety: true, validity: true } },
|
|
>,
|
|
{
|
|
}
|
|
|
|
fn main() {
|
|
test();
|
|
//~^ ERROR `()` cannot be safely transmuted into `W<'_>`
|
|
}
|