Replace `0 as *const/mut T` with `ptr::null/null_mut()`

1 files changed, 9 insertions, 8 deletions

diff --git a/src/libstd/sync/mpsc/select.rs b/src/libstd/sync/mpsc/select.rs
index 62a7b823ec8..3331411eee7 100644
--- a/src/libstd/sync/mpsc/select.rs
+++ b/src/libstd/sync/mpsc/select.rs
@@ -59,6 +59,7 @@ use core::prelude::*;
 use core::cell::Cell;
 use core::marker;
 use core::mem;
+use core::ptr;
 use core::uint;
 
 use sync::mpsc::{Receiver, RecvError};
@@ -130,8 +131,8 @@ impl Select {
     pub fn new() -> Select {
         Select {
             marker1: marker::NoSend,
-            head: 0 as *mut Handle<'static, ()>,
-            tail: 0 as *mut Handle<'static, ()>,
+            head: ptr::null_mut(),
+            tail: ptr::null_mut(),
             next_id: Cell::new(1),
         }
     }
@@ -144,8 +145,8 @@ impl Select {
     #[cfg(not(stage0))] // NOTE remove cfg after next snapshot
     pub fn new() -> Select {
         Select {
-            head: 0 as *mut Handle<'static, ()>,
-            tail: 0 as *mut Handle<'static, ()>,
+            head: ptr::null_mut(),
+            tail: ptr::null_mut(),
             next_id: Cell::new(1),
         }
     }
@@ -159,8 +160,8 @@ impl Select {
         Handle {
             id: id,
             selector: self,
-            next: 0 as *mut Handle<'static, ()>,
-            prev: 0 as *mut Handle<'static, ()>,
+            next: ptr::null_mut(),
+            prev: ptr::null_mut(),
             added: false,
             rx: rx,
             packet: rx,
@@ -325,8 +326,8 @@ impl<'rx, T: Send> Handle<'rx, T> {
             (*self.next).prev = self.prev;
         }
 
-        self.next = 0 as *mut Handle<'static, ()>;
-        self.prev = 0 as *mut Handle<'static, ()>;
+        self.next = ptr::null_mut();
+        self.prev = ptr::null_mut();
 
         self.added = false;
     }