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extern-types-size_of_val.rs
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// run-pass
#![
feature
(
extern_types
)]
use
std
::
mem
::{
size_of_val
,
align_of_val
};
extern
{
type
A
;
}
fn
main
()
{
let
x
:
&
A
=
unsafe
{
&*(
1usize
as
*
const
A
)
};
assert_eq
!(
size_of_val
(
x
),
0
);
assert_eq
!(
align_of_val
(
x
),
1
);
}