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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
19 lines
794 B
Plaintext
19 lines
794 B
Plaintext
error[E0277]: `Superset` cannot be safely transmuted into `Subset`
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--> $DIR/should_reject_contraction.rs:34:41
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LL | assert::is_transmutable::<Superset, Subset>();
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| ^^^^^^ at least one value of `Superset` isn't a bit-valid value of `Subset`
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note: required by a bound in `is_transmutable`
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--> $DIR/should_reject_contraction.rs:12:14
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LL | pub fn is_transmutable<Src, Dst>()
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| --------------- required by a bound in this function
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LL | where
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LL | Dst: TransmuteFrom<Src, { Assume::SAFETY }>
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `is_transmutable`
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0277`.
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