1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
// run-pass
#![allow(unused_braces)]
use std::cell::RefCell;
use std::fmt::Debug;
use std::rc::Rc;
// Check that coercions apply at the pointer level and don't cause
// rvalue expressions to be unsized. See #20169 for more information.
pub fn main() {
let _: Box<[isize]> = Box::new({ [1, 2, 3] });
let _: Box<[isize]> = Box::new(if true { [1, 2, 3] } else { [1, 3, 4] });
let _: Box<[isize]> = Box::new(match true { true => [1, 2, 3], false => [1, 3, 4] });
let _: Box<dyn Fn(isize) -> _> = Box::new({ |x| (x as u8) });
let _: Box<dyn Debug> = Box::new(if true { false } else { true });
let _: Box<dyn Debug> = Box::new(match true { true => 'a', false => 'b' });
let _: &[isize] = &{ [1, 2, 3] };
let _: &[isize] = &if true { [1, 2, 3] } else { [1, 3, 4] };
let _: &[isize] = &match true { true => [1, 2, 3], false => [1, 3, 4] };
let _: &dyn Fn(isize) -> _ = &{ |x| (x as u8) };
let _: &dyn Debug = &if true { false } else { true };
let _: &dyn Debug = &match true { true => 'a', false => 'b' };
let _: &str = &{ String::new() };
let _: &str = &if true { String::from("...") } else { 5.to_string() };
let _: &str = &match true {
true => format!("{}", false),
false => ["x", "y"].join("+")
};
let _: Box<[isize]> = Box::new([1, 2, 3]);
let _: Box<dyn Fn(isize) -> _> = Box::new(|x| (x as u8));
let _: Rc<RefCell<[isize]>> = Rc::new(RefCell::new([1, 2, 3]));
let _: Rc<RefCell<dyn FnMut(isize) -> _>> = Rc::new(RefCell::new(|x| (x as u8)));
let _: Vec<Box<dyn Fn(isize) -> _>> = vec![
Box::new(|x| (x as u8)),
Box::new(|x| (x as i16 as u8)),
];
}
|
