1 files changed, 24 insertions, 24 deletions
diff --git a/library/std/src/io/util/tests.rs b/library/std/src/io/util/tests.rs
index 08972a59a..ce5e2c9da 100644
--- a/library/std/src/io/util/tests.rs
+++ b/library/std/src/io/util/tests.rs
@@ -1,7 +1,7 @@
 use crate::cmp::{max, min};
 use crate::io::prelude::*;
 use crate::io::{
-    copy, empty, repeat, sink, BufWriter, Empty, ReadBuf, Repeat, Result, SeekFrom, Sink,
+    copy, empty, repeat, sink, BorrowedBuf, BufWriter, Empty, Repeat, Result, SeekFrom, Sink,
     DEFAULT_BUF_SIZE,
 };
 
@@ -79,29 +79,29 @@ fn empty_reads() {
     assert_eq!(e.read(&mut [0; 1024]).unwrap(), 0);
     assert_eq!(e.by_ref().read(&mut [0; 1024]).unwrap(), 0);
 
-    let mut buf = [];
-    let mut buf = ReadBuf::uninit(&mut buf);
-    e.read_buf(&mut buf).unwrap();
-    assert_eq!(buf.filled_len(), 0);
-    assert_eq!(buf.initialized_len(), 0);
-
-    let mut buf = [MaybeUninit::uninit()];
-    let mut buf = ReadBuf::uninit(&mut buf);
-    e.read_buf(&mut buf).unwrap();
-    assert_eq!(buf.filled_len(), 0);
-    assert_eq!(buf.initialized_len(), 0);
-
-    let mut buf = [MaybeUninit::uninit(); 1024];
-    let mut buf = ReadBuf::uninit(&mut buf);
-    e.read_buf(&mut buf).unwrap();
-    assert_eq!(buf.filled_len(), 0);
-    assert_eq!(buf.initialized_len(), 0);
-
-    let mut buf = [MaybeUninit::uninit(); 1024];
-    let mut buf = ReadBuf::uninit(&mut buf);
-    e.by_ref().read_buf(&mut buf).unwrap();
-    assert_eq!(buf.filled_len(), 0);
-    assert_eq!(buf.initialized_len(), 0);
+    let buf: &mut [MaybeUninit<_>] = &mut [];
+    let mut buf: BorrowedBuf<'_> = buf.into();
+    e.read_buf(buf.unfilled()).unwrap();
+    assert_eq!(buf.len(), 0);
+    assert_eq!(buf.init_len(), 0);
+
+    let buf: &mut [_] = &mut [MaybeUninit::uninit()];
+    let mut buf: BorrowedBuf<'_> = buf.into();
+    e.read_buf(buf.unfilled()).unwrap();
+    assert_eq!(buf.len(), 0);
+    assert_eq!(buf.init_len(), 0);
+
+    let buf: &mut [_] = &mut [MaybeUninit::uninit(); 1024];
+    let mut buf: BorrowedBuf<'_> = buf.into();
+    e.read_buf(buf.unfilled()).unwrap();
+    assert_eq!(buf.len(), 0);
+    assert_eq!(buf.init_len(), 0);
+
+    let buf: &mut [_] = &mut [MaybeUninit::uninit(); 1024];
+    let mut buf: BorrowedBuf<'_> = buf.into();
+    e.by_ref().read_buf(buf.unfilled()).unwrap();
+    assert_eq!(buf.len(), 0);
+    assert_eq!(buf.init_len(), 0);
 }
 
 #[test]