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#![allow(unused, clippy::print_literal, clippy::write_literal)]
#![warn(clippy::print_in_format_impl)]
use std::fmt::{Debug, Display, Error, Formatter};
//@no-rustfix
macro_rules! indirect {
() => {{ println!() }};
}
macro_rules! nested {
($($tt:tt)*) => {
$($tt)*
};
}
struct Foo;
impl Debug for Foo {
fn fmt(&self, f: &mut Formatter) -> Result<(), Error> {
static WORKS_WITH_NESTED_ITEMS: bool = true;
print!("{}", 1);
//~^ ERROR: use of `print!` in `Debug` impl
//~| NOTE: `-D clippy::print-in-format-impl` implied by `-D warnings`
println!("{}", 2);
//~^ ERROR: use of `println!` in `Debug` impl
eprint!("{}", 3);
//~^ ERROR: use of `eprint!` in `Debug` impl
eprintln!("{}", 4);
//~^ ERROR: use of `eprintln!` in `Debug` impl
nested! {
println!("nested");
//~^ ERROR: use of `println!` in `Debug` impl
};
write!(f, "{}", 5);
writeln!(f, "{}", 6);
indirect!();
Ok(())
}
}
impl Display for Foo {
fn fmt(&self, f: &mut Formatter) -> Result<(), Error> {
print!("Display");
//~^ ERROR: use of `print!` in `Display` impl
write!(f, "Display");
Ok(())
}
}
struct UnnamedFormatter;
impl Debug for UnnamedFormatter {
fn fmt(&self, _: &mut Formatter) -> Result<(), Error> {
println!("UnnamedFormatter");
//~^ ERROR: use of `println!` in `Debug` impl
Ok(())
}
}
fn main() {
print!("outside fmt");
println!("outside fmt");
eprint!("outside fmt");
eprintln!("outside fmt");
}
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