From aca025823221f2c7d52fcc8893f69f5042edafbc Mon Sep 17 00:00:00 2001
From: Lzu Tao <taolzu@gmail.com>
Date: Mon, 3 Aug 2020 06:51:41 +0000
Subject: [PATCH] Use u32::from_le_bytes to fix a FIXME

---
 library/std/src/net/ip.rs | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/library/std/src/net/ip.rs b/library/std/src/net/ip.rs
index a64b43ca3ad45..6fdf635039f68 100644
--- a/library/std/src/net/ip.rs
+++ b/library/std/src/net/ip.rs
@@ -319,15 +319,7 @@ impl Ipv4Addr {
     #[stable(feature = "rust1", since = "1.0.0")]
     #[rustc_const_stable(feature = "const_ipv4", since = "1.32.0")]
     pub const fn new(a: u8, b: u8, c: u8, d: u8) -> Ipv4Addr {
-        // FIXME: should just be u32::from_be_bytes([a, b, c, d]),
-        // once that method is no longer rustc_const_unstable
-        Ipv4Addr {
-            inner: c::in_addr {
-                s_addr: u32::to_be(
-                    ((a as u32) << 24) | ((b as u32) << 16) | ((c as u32) << 8) | (d as u32),
-                ),
-            },
-        }
+        Ipv4Addr { inner: c::in_addr { s_addr: u32::from_le_bytes([a, b, c, d]) } }
     }
 
     /// An IPv4 address with the address pointing to localhost: 127.0.0.1.