rust-clippy/tests/ui/toplevel_ref_arg.fixed

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// run-rustfix
// aux-build:macro_rules.rs
#![warn(clippy::toplevel_ref_arg)]
#[macro_use]
extern crate macro_rules;
macro_rules! gen_binding {
() => {
let _y = &42;
};
}
fn main() {
// Closures should not warn
let y = |ref x| println!("{:?}", x);
y(1u8);
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let _x = &1;
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let _y: &(&_, u8) = &(&1, 2);
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let _z = &(1 + 2);
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let _z = &mut (1 + 2);
let (ref x, _) = (1, 2); // ok, not top level
println!("The answer is {}.", x);
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let _x = &vec![1, 2, 3];
// Make sure that allowing the lint works
#[allow(clippy::toplevel_ref_arg)]
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let ref mut _x = 1_234_543;
// ok
for ref _x in 0..10 {}
// lint in macro
#[allow(unused)]
{
gen_binding!();
}
// do not lint in external macro
{
ref_arg_binding!();
}
}