28 lines
640 B
Rust
28 lines
640 B
Rust
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#![crate_type = "lib"]
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#![feature(transmutability)]
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mod assert {
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use std::mem::BikeshedIntrinsicFrom;
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struct Context;
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pub fn is_maybe_transmutable<Src, Dst>()
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where
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Dst: BikeshedIntrinsicFrom<Src, Context>,
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{
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}
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}
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fn main() {
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pub union Uninit {
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a: [u8; usize::MAX],
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}
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#[repr(C)]
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struct ExplicitlyPadded(Uninit);
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assert::is_maybe_transmutable::<(), ExplicitlyPadded>();
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//~^ ERROR `()` cannot be safely transmuted into `ExplicitlyPadded`
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assert::is_maybe_transmutable::<ExplicitlyPadded, ()>();
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//~^ ERROR `ExplicitlyPadded` cannot be safely transmuted into `()`
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}
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