3 files changed, 5 insertions, 0 deletions
diff --git a/src/libstd/io/util.rs b/src/libstd/io/util.rs
index 7c4eae6512d..2bfd3e4ad20 100644
--- a/src/libstd/io/util.rs
+++ b/src/libstd/io/util.rs
@@ -44,6 +44,7 @@ pub fn copy<R: ?Sized, W: ?Sized>(reader: &mut R, writer: &mut W) -> io::Result<
     where R: Read, W: Write
 {
     let mut buf = unsafe {
+        #[allow(deprecated)]
         let mut buf: [u8; super::DEFAULT_BUF_SIZE] = mem::uninitialized();
         reader.initializer().initialize(&mut buf);
         buf
diff --git a/src/libstd/sys/cloudabi/mod.rs b/src/libstd/sys/cloudabi/mod.rs
index c3b8bbd0426..3fef7552259 100644
--- a/src/libstd/sys/cloudabi/mod.rs
+++ b/src/libstd/sys/cloudabi/mod.rs
@@ -1,3 +1,5 @@
+#![allow(deprecated)] // mem::uninitialized
+
 use crate::io::ErrorKind;
 use crate::mem;
 
diff --git a/src/libstd/sys/sgx/mod.rs b/src/libstd/sys/sgx/mod.rs
index 01f5536ed7a..3bf9ecf4080 100644
--- a/src/libstd/sys/sgx/mod.rs
+++ b/src/libstd/sys/sgx/mod.rs
@@ -3,6 +3,8 @@
 //! This module contains the facade (aka platform-specific) implementations of
 //! OS level functionality for Fortanix SGX.
 
+#![allow(deprecated)]
+
 use crate::io::ErrorKind;
 use crate::os::raw::c_char;
 use crate::sync::atomic::{AtomicBool, Ordering};