rust/tests/ui/must_use_unit.rs

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//run-rustfix
// aux-build:macro_rules.rs
#![warn(clippy::must_use_unit)]
#![allow(clippy::unused_unit)]
#[macro_use]
extern crate macro_rules;
#[must_use]
pub fn must_use_default() {}
#[must_use]
pub fn must_use_unit() -> () {}
#[must_use = "With note"]
pub fn must_use_with_note() {}
fn main() {
must_use_default();
must_use_unit();
must_use_with_note();
// We should not lint in external macros
must_use_unit!();
}