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
|
//@ build-fail
//~^ ERROR: a cycle occurred during layout computation
//~| ERROR: cycle detected when computing layout of
// Issue #111176 -- ensure that we do not emit ICE on layout cycles
use std::mem;
pub struct S<T: Tr> {
pub f: <T as Tr>::I,
}
pub trait Tr {
type I: Tr;
}
impl<T: Tr> Tr for S<T> {
type I = S<S<T>>;
}
impl Tr for () {
type I = ();
}
fn foo<T: Tr>() -> usize {
mem::size_of::<S<T>>()
}
fn main() {
println!("{}", foo::<S<()>>());
}
|
