From 0d5bd5b26a3b289f7c8463d02c3b9caefd15205c Mon Sep 17 00:00:00 2001
From: Jacob Lifshay <programmerjake@gmail.com>
Date: Tue, 5 Jul 2022 13:45:15 -0700
Subject: [PATCH] add `ReadBuf::buf*` accessor functions for getting the
 original buffer

---
 library/std/src/io/readbuf.rs | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/library/std/src/io/readbuf.rs b/library/std/src/io/readbuf.rs
index 78d1113f8375..ad35b5502587 100644
--- a/library/std/src/io/readbuf.rs
+++ b/library/std/src/io/readbuf.rs
@@ -246,4 +246,25 @@ impl<'a> ReadBuf<'a> {
     pub fn initialized_len(&self) -> usize {
         self.initialized
     }
+
+    /// Returns the buffer
+    #[inline]
+    pub fn buf(&self) -> &[MaybeUninit<u8>] {
+        &*self.buf
+    }
+
+    /// Returns the buffer
+    ///
+    /// # Safety
+    /// You must not write unitialized bytes to positions less than `self.initialized_len()`
+    #[inline]
+    pub unsafe fn buf_mut(&mut self) -> &mut [MaybeUninit<u8>] {
+        self.buf
+    }
+
+    /// Returns the buffer
+    #[inline]
+    pub fn into_buf(self) -> &'a mut [MaybeUninit<u8>] {
+        self.buf
+    }
 }