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rust-clippy/tests/ui/unused_io_amount.rs
2017-10-03 12:07:24 +02:00

31 lines
624 B
Rust

#![allow(dead_code)]
#![warn(unused_io_amount)]
use std::io;
// FIXME: compiletest doesn't understand errors from macro invocation span
fn try_macro<T: io::Read + io::Write>(s: &mut T) -> io::Result<()> {
try!(s.write(b"test"));
let mut buf = [0u8; 4];
try!(s.read(&mut buf));
Ok(())
}
fn question_mark<T: io::Read + io::Write>(s: &mut T) -> io::Result<()> {
s.write(b"test")?;
let mut buf = [0u8; 4];
s.read(&mut buf)?;
Ok(())
}
fn unwrap<T: io::Read + io::Write>(s: &mut T) {
s.write(b"test").unwrap();
let mut buf = [0u8; 4];
s.read(&mut buf).unwrap();
}
fn main() {
}