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// check-pass
use std::fmt::{self, Display};
struct Mutex;
impl Mutex {
fn lock(&self) -> MutexGuard {
MutexGuard(self)
}
}
struct MutexGuard<'a>(&'a Mutex);
impl<'a> Drop for MutexGuard<'a> {
fn drop(&mut self) {
// Empty but this is a necessary part of the repro. Otherwise borrow
// checker is fine with 'a dangling at the time that MutexGuard goes out
// of scope.
}
}
impl<'a> Display for MutexGuard<'a> {
fn fmt(&self, _formatter: &mut fmt::Formatter) -> fmt::Result {
Ok(())
}
}
fn main() {
let _print = {
let mutex = Mutex;
print!("{}", mutex.lock()) /* no semicolon */
};
let _println = {
let mutex = Mutex;
println!("{}", mutex.lock()) /* no semicolon */
};
let _eprint = {
let mutex = Mutex;
eprint!("{}", mutex.lock()) /* no semicolon */
};
let _eprintln = {
let mutex = Mutex;
eprintln!("{}", mutex.lock()) /* no semicolon */
};
let _panic = {
let mutex = Mutex;
panic!("{}", mutex.lock()) /* no semicolon */
};
}
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