mirror of https://github.com/rust-lang/rust
25 lines
670 B
Rust
25 lines
670 B
Rust
//@ revisions: current next
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//@ ignore-compare-mode-next-solver (explicit revisions)
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//@[next] compile-flags: -Znext-solver
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#![feature(transmutability)]
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mod assert {
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use std::mem::{Assume, BikeshedIntrinsicFrom};
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pub fn is_transmutable<Src, Dst>()
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where
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Dst: BikeshedIntrinsicFrom<Src, { Assume::SAFETY }>
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{}
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pub fn is_maybe_transmutable<Src, Dst>()
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where
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Dst: BikeshedIntrinsicFrom<Src, { Assume::SAFETY.and(Assume::VALIDITY) }>
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{}
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}
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fn main() {
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assert::is_transmutable::<u8, bool>(); //~ ERROR cannot be safely transmuted
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assert::is_maybe_transmutable::<u8, bool>();
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assert::is_transmutable::<bool, u8>();
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}
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