From e01d8c1ad193df010be299254f2c2568544b32d0 Mon Sep 17 00:00:00 2001
From: Alan Somers <asomers@gmail.com>
Date: Mon, 19 Aug 2019 16:53:27 -0600
Subject: [PATCH] Implement Default for FdSet

---
 CHANGELOG.md          | 3 +++
 src/sys/select.rs     | 6 ++++++
 src/sys/socket/mod.rs | 2 ++
 3 files changed, 11 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 187f16449a..d5a0d66b64 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,9 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 ## [Unreleased] - ReleaseDate
 ### Added
 
+- Implemented `Default` for `FdSet`
+  ([#TODO](https://github.com/nix-rust/nix/pull/TODO))
+
 - Added `NixPath::is_empty`.
   ([#TODO](https://github.com/nix-rust/nix/pull/TODO))
 
diff --git a/src/sys/select.rs b/src/sys/select.rs
index 1b518e29f6..9d60ffaf66 100644
--- a/src/sys/select.rs
+++ b/src/sys/select.rs
@@ -69,6 +69,12 @@ impl FdSet {
     }
 }
 
+impl Default for FdSet {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 /// Monitors file descriptors for readiness
 ///
 /// Returns the total number of ready file descriptors in all sets. The sets are changed so that all
diff --git a/src/sys/socket/mod.rs b/src/sys/socket/mod.rs
index 8dc8a5caff..662d880353 100644
--- a/src/sys/socket/mod.rs
+++ b/src/sys/socket/mod.rs
@@ -344,6 +344,8 @@ impl<T> CmsgSpace<T> {
     /// Create a CmsgSpace<T>. The structure is used only for space, so
     /// the fields are uninitialized.
     #[deprecated( since="0.14.0", note="Use the cmsg_space! macro instead")]
+    // It's deprecated anyway; no sense adding Default
+    #[allow(clippy::new_without_default)]
     pub fn new() -> Self {
         // Safe because the fields themselves aren't accessible.
         unsafe { mem::uninitialized() }