mirror of https://github.com/rust-lang/rust
23 lines
521 B
Rust
23 lines
521 B
Rust
//! Unless safety is assumed, a transmutation should be rejected if the
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//! destination type may have a safety invariant.
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#![crate_type = "lib"]
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#![feature(transmutability)]
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#![allow(dead_code)]
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mod assert {
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use std::mem::BikeshedIntrinsicFrom;
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pub fn is_transmutable<Src, Dst>()
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where
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Dst: BikeshedIntrinsicFrom<Src> // safety is NOT assumed
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{}
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}
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fn test() {
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type Src = ();
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#[repr(C)]
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struct Dst;
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assert::is_transmutable::<Src, Dst>(); //~ ERROR cannot be safely transmuted
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}
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