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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
33 lines
593 B
Rust
33 lines
593 B
Rust
//@ check-pass
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//! Tests that we do not regress rust-lang/rust#125811
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#![feature(transmutability)]
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fn assert_transmutable<T>()
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where
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(): std::mem::TransmuteFrom<T>
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{}
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enum Uninhabited {}
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enum SingleInhabited {
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X,
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Y(Uninhabited)
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}
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enum SingleUninhabited {
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X(Uninhabited),
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Y(Uninhabited),
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}
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enum MultipleUninhabited {
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X(u8, Uninhabited),
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Y(Uninhabited, u16),
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}
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fn main() {
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assert_transmutable::<Uninhabited>();
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assert_transmutable::<SingleInhabited>();
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assert_transmutable::<SingleUninhabited>();
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assert_transmutable::<MultipleUninhabited>();
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}
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