From 4dda632faf777e415977d28b9697df6cff09b01b Mon Sep 17 00:00:00 2001
From: Without Boats <woboats@gmail.com>
Date: Tue, 24 Mar 2020 00:33:25 +0100
Subject: [PATCH 1/3] IoSlice/IoSliceMut should be Send and Sync

---
 src/libstd/io/mod.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/libstd/io/mod.rs b/src/libstd/io/mod.rs
index 83c492fecf974..4323dfff26f62 100644
--- a/src/libstd/io/mod.rs
+++ b/src/libstd/io/mod.rs
@@ -951,6 +951,12 @@ pub trait Read {
 #[repr(transparent)]
 pub struct IoSliceMut<'a>(sys::io::IoSliceMut<'a>);
 
+#[stable(feature = "iovec-send-sync", since = "1.44.0")]
+unsafe impl<'a> Send for IoSliceMut<'a> { }
+
+#[stable(feature = "iovec-send-sync", since = "1.44.0")]
+unsafe impl<'a> Sync for IoSliceMut<'a> { }
+
 #[stable(feature = "iovec", since = "1.36.0")]
 impl<'a> fmt::Debug for IoSliceMut<'a> {
     fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
@@ -1054,6 +1060,12 @@ impl<'a> DerefMut for IoSliceMut<'a> {
 #[repr(transparent)]
 pub struct IoSlice<'a>(sys::io::IoSlice<'a>);
 
+#[stable(feature = "iovec-send-sync", since = "1.43.0")]
+unsafe impl<'a> Send for IoSlice<'a> { }
+
+#[stable(feature = "iovec-send-sync", since = "1.43.0")]
+unsafe impl<'a> Sync for IoSlice<'a> { }
+
 #[stable(feature = "iovec", since = "1.36.0")]
 impl<'a> fmt::Debug for IoSlice<'a> {
     fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {

From 3cc4ef93260adc89eca3799d93757ff1a4c7b43f Mon Sep 17 00:00:00 2001
From: Without Boats <woboats@gmail.com>
Date: Tue, 24 Mar 2020 00:34:48 +0100
Subject: [PATCH 2/3] correct rustc version

---
 src/libstd/io/mod.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/libstd/io/mod.rs b/src/libstd/io/mod.rs
index 4323dfff26f62..1022123347ee5 100644
--- a/src/libstd/io/mod.rs
+++ b/src/libstd/io/mod.rs
@@ -1060,10 +1060,10 @@ impl<'a> DerefMut for IoSliceMut<'a> {
 #[repr(transparent)]
 pub struct IoSlice<'a>(sys::io::IoSlice<'a>);
 
-#[stable(feature = "iovec-send-sync", since = "1.43.0")]
+#[stable(feature = "iovec-send-sync", since = "1.44.0")]
 unsafe impl<'a> Send for IoSlice<'a> { }
 
-#[stable(feature = "iovec-send-sync", since = "1.43.0")]
+#[stable(feature = "iovec-send-sync", since = "1.44.0")]
 unsafe impl<'a> Sync for IoSlice<'a> { }
 
 #[stable(feature = "iovec", since = "1.36.0")]

From 03c64bf532ceec915f74460daf5344bb8ccf23d3 Mon Sep 17 00:00:00 2001
From: Without Boats <woboats@gmail.com>
Date: Tue, 24 Mar 2020 15:39:29 +0100
Subject: [PATCH 3/3] spaces between braces really ruin readability

---
 src/libstd/io/mod.rs | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/libstd/io/mod.rs b/src/libstd/io/mod.rs
index 1022123347ee5..88d556229e4cb 100644
--- a/src/libstd/io/mod.rs
+++ b/src/libstd/io/mod.rs
@@ -952,10 +952,10 @@ pub trait Read {
 pub struct IoSliceMut<'a>(sys::io::IoSliceMut<'a>);
 
 #[stable(feature = "iovec-send-sync", since = "1.44.0")]
-unsafe impl<'a> Send for IoSliceMut<'a> { }
+unsafe impl<'a> Send for IoSliceMut<'a> {}
 
 #[stable(feature = "iovec-send-sync", since = "1.44.0")]
-unsafe impl<'a> Sync for IoSliceMut<'a> { }
+unsafe impl<'a> Sync for IoSliceMut<'a> {}
 
 #[stable(feature = "iovec", since = "1.36.0")]
 impl<'a> fmt::Debug for IoSliceMut<'a> {
@@ -1061,10 +1061,10 @@ impl<'a> DerefMut for IoSliceMut<'a> {
 pub struct IoSlice<'a>(sys::io::IoSlice<'a>);
 
 #[stable(feature = "iovec-send-sync", since = "1.44.0")]
-unsafe impl<'a> Send for IoSlice<'a> { }
+unsafe impl<'a> Send for IoSlice<'a> {}
 
 #[stable(feature = "iovec-send-sync", since = "1.44.0")]
-unsafe impl<'a> Sync for IoSlice<'a> { }
+unsafe impl<'a> Sync for IoSlice<'a> {}
 
 #[stable(feature = "iovec", since = "1.36.0")]
 impl<'a> fmt::Debug for IoSlice<'a> {