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Fix WriteFmtFuture not taking into account already written bytes (#964)

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This commit is contained in:
Rolf Karp 2021-03-13 16:22:33 +01:00
parent d395607761
commit 5bc34cb6ba
1 changed files with 4 additions and 4 deletions
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8
src/io/write/write_fmt.rs
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@ -11,7 +11,7 @@ pub struct WriteFmtFuture<'a, T: Unpin + ?Sized> {
pub(crate) writer: &'a mut T,
pub(crate) res: Option<io::Result<Vec<u8>>>,
pub(crate) buffer: Option<Vec<u8>>,
pub(crate) amt: u64,
pub(crate) amt: usize,
}
impl<T: Write + Unpin + ?Sized> Future for WriteFmtFuture<'_, T> {
@ -37,15 +37,15 @@ impl<T: Write + Unpin + ?Sized> Future for WriteFmtFuture<'_, T> {
// Copy the data from the buffer into the writer until it's done.
loop {
if *amt == buffer.len() as u64 {
if *amt == buffer.len() {
futures_core::ready!(Pin::new(&mut **writer).poll_flush(cx))?;
return Poll::Ready(Ok(()));
}
let i = futures_core::ready!(Pin::new(&mut **writer).poll_write(cx, buffer))?;
let i = futures_core::ready!(Pin::new(&mut **writer).poll_write(cx, &buffer[*amt..]))?;
if i == 0 {
return Poll::Ready(Err(io::ErrorKind::WriteZero.into()));
}
*amt += i as u64;
*amt += i;
}
}
}