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// run-rustfix
#![allow(unreachable_code)]
#![allow(unused_macros)]
#![allow(unused_variables)]
#![allow(clippy::assertions_on_constants)]
#![allow(clippy::eq_op)]
#![allow(clippy::print_literal)]
#![warn(clippy::to_string_in_format_args)]
use std::io::{stdout, Write};
use std::ops::Deref;
use std::panic::Location;
struct Somewhere;
impl ToString for Somewhere {
fn to_string(&self) -> String {
String::from("somewhere")
}
}
struct X(u32);
impl Deref for X {
type Target = u32;
fn deref(&self) -> &u32 {
&self.0
}
}
struct Y<'a>(&'a X);
impl<'a> Deref for Y<'a> {
type Target = &'a X;
fn deref(&self) -> &Self::Target {
&self.0
}
}
struct Z(u32);
impl Deref for Z {
type Target = u32;
fn deref(&self) -> &u32 {
&self.0
}
}
impl std::fmt::Display for Z {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "Z")
}
}
macro_rules! my_macro {
() => {
// here be dragons, do not enter (or lint)
println!("error: something failed at {}", Location::caller().to_string());
};
}
macro_rules! my_other_macro {
() => {
Location::caller().to_string()
};
}
fn main() {
let x = &X(1);
let x_ref = &x;
let _ = format!("error: something failed at {}", Location::caller());
let _ = write!(
stdout(),
"error: something failed at {}",
Location::caller()
);
let _ = writeln!(
stdout(),
"error: something failed at {}",
Location::caller()
);
print!("error: something failed at {}", Location::caller());
println!("error: something failed at {}", Location::caller());
eprint!("error: something failed at {}", Location::caller());
eprintln!("error: something failed at {}", Location::caller());
let _ = format_args!("error: something failed at {}", Location::caller());
assert!(true, "error: something failed at {}", Location::caller());
assert_eq!(0, 0, "error: something failed at {}", Location::caller());
assert_ne!(0, 0, "error: something failed at {}", Location::caller());
panic!("error: something failed at {}", Location::caller());
println!("{}", *X(1));
println!("{}", ***Y(&X(1)));
println!("{}", Z(1));
println!("{}", **x);
println!("{}", ***x_ref);
// https://github.com/rust-lang/rust-clippy/issues/7903
println!("{foo}{bar}", foo = "foo", bar = "bar");
println!("{foo}{bar}", foo = "foo", bar = "bar");
println!("{foo}{bar}", bar = "bar", foo = "foo");
println!("{foo}{bar}", bar = "bar", foo = "foo");
// negative tests
println!("error: something failed at {}", Somewhere.to_string());
// The next two tests are negative because caching the string might be faster than calling `<X as
// Display>::fmt` twice.
println!("{} and again {0}", x.to_string());
println!("{foo}{foo}", foo = "foo".to_string());
my_macro!();
println!("error: something failed at {}", my_other_macro!());
// https://github.com/rust-lang/rust-clippy/issues/7903
println!("{foo}{foo:?}", foo = "foo".to_string());
}
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