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#![deny(unused_variables)]
macro_rules! make_var {
($struct:ident, $var:ident) => {
let $var = $struct.$var;
};
}
#[allow(unused)]
struct MyStruct {
var: i32,
}
fn main() {
let s = MyStruct { var: 42 };
make_var!(s, var); //~ ERROR unused variable: `var`
let a = 1; //~ ERROR unused variable: `a`
}
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