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issues
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issue-15189.rs
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// run-pass
macro_rules
!
third
{
(
$e
:
expr
)
=>
({
let
x
=
2
;
$e
[
x
]})
}
fn
main
()
{
let
x
=
vec
![
10
_usize
,
11
_usize
,
12
_usize
,
13
_usize
];
let
t
=
third
!(
x
);
assert_eq
!(
t
,
12
_usize
);
}