mirror of https://github.com/rust-lang/rust
27 lines
781 B
Rust
27 lines
781 B
Rust
// An unknown destination type should be gracefully handled.
|
|
|
|
#![crate_type = "lib"]
|
|
#![feature(transmutability)]
|
|
#![allow(dead_code, incomplete_features, non_camel_case_types)]
|
|
|
|
mod assert {
|
|
use std::mem::TransmuteFrom;
|
|
|
|
pub fn is_transmutable<Src, Dst>()
|
|
where
|
|
Dst: TransmuteFrom<Src>
|
|
{}
|
|
}
|
|
|
|
fn should_gracefully_handle_unknown_src_field() {
|
|
#[repr(C)] struct Src(Missing); //~ cannot find type
|
|
#[repr(C)] struct Dst();
|
|
assert::is_transmutable::<Src, Dst>(); //~ ERROR cannot be safely transmuted
|
|
}
|
|
|
|
fn should_gracefully_handle_unknown_src_ref_field() {
|
|
#[repr(C)] struct Src(&'static Missing); //~ cannot find type
|
|
#[repr(C)] struct Dst(&'static Dst);
|
|
assert::is_transmutable::<Src, Dst>(); //~ ERROR cannot be safely transmuted
|
|
}
|