4 files changed, 10 insertions, 3 deletions
diff --git a/src/libstd/sys/windows/backtrace.rs b/src/libstd/sys/windows/backtrace.rs
index 8de2fe1336f..b464ba70911 100644
--- a/src/libstd/sys/windows/backtrace.rs
+++ b/src/libstd/sys/windows/backtrace.rs
@@ -23,6 +23,7 @@
 //! this takes the route of using StackWalk64 in order to walk the stack.
 
 #![allow(dead_code)]
+#![allow(deprecated)] // for old path for dynamic lib
 
 use prelude::v1::*;
 
diff --git a/src/libstd/sys/windows/ext.rs b/src/libstd/sys/windows/ext.rs
index b30aec08439..1d63da813c9 100644
--- a/src/libstd/sys/windows/ext.rs
+++ b/src/libstd/sys/windows/ext.rs
@@ -122,7 +122,7 @@ impl AsRawSocket for net::UdpSocket {
     fn as_raw_socket(&self) -> Socket { *self.as_inner().socket().as_inner() }
 }
 
-// Windows-specific extensions to `OsString`.
+/// Windows-specific extensions to `OsString`.
 pub trait OsStringExt {
     /// Create an `OsString` from a potentially ill-formed UTF-16 slice of 16-bit code units.
     ///
@@ -137,8 +137,12 @@ impl OsStringExt for OsString {
     }
 }
 
-// Windows-specific extensions to `OsStr`.
+/// Windows-specific extensions to `OsStr`.
 pub trait OsStrExt {
+    /// Re-encode an `OsStr` as a wide character sequence,
+    /// i.e. potentially ill-formed UTF-16.
+    ///
+    /// This is lossless. Note that the encoding does not include a final null.
     fn encode_wide(&self) -> EncodeWide;
 }
 
diff --git a/src/libstd/sys/windows/fs.rs b/src/libstd/sys/windows/fs.rs
index 5e6fcc66407..a218fb26fda 100644
--- a/src/libstd/sys/windows/fs.rs
+++ b/src/libstd/sys/windows/fs.rs
@@ -10,6 +10,8 @@
 
 //! Blocking Windows-based file I/O
 
+#![allow(deprecated)] // this module itself is essentially deprecated
+
 use libc::{self, c_int};
 
 use mem;
diff --git a/src/libstd/sys/windows/process.rs b/src/libstd/sys/windows/process.rs
index 119ff3dbcc8..e465ecaa5f6 100644
--- a/src/libstd/sys/windows/process.rs
+++ b/src/libstd/sys/windows/process.rs
@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![allow(deprecated)]
+#![allow(deprecated)] // this module itself is essentially deprecated
 
 use prelude::v1::*;