blob: c0b32621505756b0693d6780ce8e47233d563e7b (
plain)
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
|
// stderr-per-bitwidth
const fn foo() -> ! {
unsafe { std::mem::transmute(()) }
//~^ ERROR evaluation of constant value failed
//~| WARN the type `!` does not permit zero-initialization [invalid_value]
}
// Type defined in a submodule, so that it is not "visibly"
// uninhabited (which would change interpreter behavior).
pub mod empty {
#[derive(Clone, Copy)]
enum Void {}
#[derive(Clone, Copy)]
pub struct Empty(Void);
}
const FOO: [empty::Empty; 3] = [foo(); 3];
const BAR: [empty::Empty; 3] = [unsafe { std::mem::transmute(()) }; 3];
//~^ ERROR it is undefined behavior to use this value
//~| WARN the type `empty::Empty` does not permit zero-initialization
fn main() {
FOO;
BAR;
}
|
