[rustc.git] / src / tools / clippy / tests / ui / mem_replace_macro.rs

// aux-build:macro_rules.rs
#![warn(clippy::mem_replace_with_default)]

#[macro_use]
extern crate macro_rules;

macro_rules! take {
    ($s:expr) => {
        std::mem::replace($s, Default::default())
    };
}

fn replace_with_default() {
    let s = &mut String::from("foo");
    take!(s);
    take_external!(s);
}

fn main() {
    replace_with_default();
}
Commit	Line	Data
f20569fa XL	1	// aux-build:macro_rules.rs
	2	#![warn(clippy::mem_replace_with_default)]
	3
	4	#[macro_use]
	5	extern crate macro_rules;
	6
	7	macro_rules! take {
	8	($s:expr) => {
	9	std::mem::replace($s, Default::default())
	10	};
	11	}
	12
	13	fn replace_with_default() {
	14	let s = &mut String::from("foo");
	15	take!(s);
	16	take_external!(s);
	17	}
	18
	19	fn main() {
	20	replace_with_default();
	21	}