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rust-clippy/tests/ui/unused_io_amount.rs
2020-01-09 23:46:55 +09:00

25 lines
576 B
Rust

#![allow(dead_code)]
#![warn(clippy::unused_io_amount)]
use std::io;
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 vectored<T: io::Read + io::Write>(s: &mut T) -> io::Result<()> {
s.read_vectored(&mut [io::IoSliceMut::new(&mut [])])?;
s.write_vectored(&[io::IoSlice::new(&[])])?;
Ok(())
}
fn main() {}