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// check-pass
//! The implementation should behave correctly when the `ASSUME` parameters are
//! provided indirectly through an abstraction.
#![crate_type = "lib"]
#![feature(transmutability)]
#![allow(dead_code, incomplete_features, non_camel_case_types)]
mod assert {
use std::mem::BikeshedIntrinsicFrom;
pub fn is_transmutable<
Src,
Dst,
Context,
const ASSUME_ALIGNMENT: bool,
const ASSUME_LIFETIMES: bool,
const ASSUME_VALIDITY: bool,
const ASSUME_VISIBILITY: bool,
>()
where
Dst: BikeshedIntrinsicFrom<
Src,
Context,
ASSUME_ALIGNMENT,
ASSUME_LIFETIMES,
ASSUME_VALIDITY,
ASSUME_VISIBILITY,
>,
{}
}
fn direct() {
struct Context;
#[repr(C)] struct Src;
#[repr(C)] struct Dst;
assert::is_transmutable::<Src, Dst, Context, false, false, false, false>();
}
fn via_const() {
struct Context;
#[repr(C)] struct Src;
#[repr(C)] struct Dst;
const FALSE: bool = false;
assert::is_transmutable::<Src, Dst, Context, FALSE, FALSE, FALSE, FALSE>();
}
fn via_associated_const() {
struct Context;
#[repr(C)] struct Src;
#[repr(C)] struct Dst;
trait Trait {
const FALSE: bool = true;
}
struct Ty;
impl Trait for Ty {}
assert::is_transmutable::<
Src,
Dst,
Context,
{Ty::FALSE},
{Ty::FALSE},
{Ty::FALSE},
{Ty::FALSE}
>();
}
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