rust/tests/ui/box/into-boxed-slice-fail.rs
2023-01-11 09:32:08 +00:00

15 lines
650 B
Rust

#![feature(box_into_boxed_slice)]
use std::boxed::Box;
use std::fmt::Debug;
fn main() {
let boxed_slice = Box::new([1,2,3]) as Box<[u8]>;
let _ = Box::into_boxed_slice(boxed_slice);
//~^ ERROR the size for values of type `[u8]` cannot be known at compilation time
//~^^ ERROR the size for values of type `[u8]` cannot be known at compilation time
let boxed_trait: Box<dyn Debug> = Box::new(5u8);
let _ = Box::into_boxed_slice(boxed_trait);
//~^ ERROR the size for values of type `dyn Debug` cannot be known at compilation time
//~^^ ERROR the size for values of type `dyn Debug` cannot be known at compilation time
}