Stabilized vectored IO

This renames `std::io::IoVec` to `std::io::IoSlice` and
`std::io::IoVecMut` to `std::io::IoSliceMut`, and stabilizes
`std::io::IoSlice`, `std::io::IoSliceMut`,
`std::io::Read::read_vectored`, and `std::io::Write::write_vectored`.

Closes #58452

1 files changed, 3 insertions, 3 deletions

diff --git a/src/libstd/io/buffered.rs b/src/libstd/io/buffered.rs
index bf406bb9b0b..6a9f7b90fff 100644
--- a/src/libstd/io/buffered.rs
+++ b/src/libstd/io/buffered.rs
@@ -5,7 +5,7 @@ use crate::io::prelude::*;
 use crate::cmp;
 use crate::error;
 use crate::fmt;
-use crate::io::{self, Initializer, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom, IoVec, IoVecMut};
+use crate::io::{self, Initializer, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom, IoSlice, IoSliceMut};
 use crate::memchr;
 
 /// The `BufReader` struct adds buffering to any reader.
@@ -249,7 +249,7 @@ impl<R: Read> Read for BufReader<R> {
         Ok(nread)
     }
 
-    fn read_vectored(&mut self, bufs: &mut [IoVecMut<'_>]) -> io::Result<usize> {
+    fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> io::Result<usize> {
         let total_len = bufs.iter().map(|b| b.len()).sum::<usize>();
         if self.pos == self.cap && total_len >= self.buf.len() {
             self.discard_buffer();
@@ -609,7 +609,7 @@ impl<W: Write> Write for BufWriter<W> {
         }
     }
 
-    fn write_vectored(&mut self, bufs: &[IoVec<'_>]) -> io::Result<usize> {
+    fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> io::Result<usize> {
         let total_len = bufs.iter().map(|b| b.len()).sum::<usize>();
         if self.buf.len() + total_len > self.buf.capacity() {
             self.flush_buf()?;