Use `null()`/`null_mut()` instead of `0 as *const T`/`0 as *mut T`

2 files changed, 5 insertions, 3 deletions

diff --git a/src/libstd/rt/at_exit_imp.rs b/src/libstd/rt/at_exit_imp.rs
index 17d2940a6f1..54e5b499e53 100644
--- a/src/libstd/rt/at_exit_imp.rs
+++ b/src/libstd/rt/at_exit_imp.rs
@@ -18,6 +18,7 @@
 
 use alloc::boxed::FnBox;
 use boxed::Box;
+use ptr;
 use sys_common::mutex::Mutex;
 use vec::Vec;
 
@@ -28,7 +29,7 @@ type Queue = Vec<Box<FnBox()>>;
 // the thread infrastructure to be in place (useful on the borders of
 // initialization/destruction).
 static LOCK: Mutex = Mutex::new();
-static mut QUEUE: *mut Queue = 0 as *mut Queue;
+static mut QUEUE: *mut Queue = ptr::null_mut();
 
 // The maximum number of times the cleanup routines will be run. While running
 // the at_exit closures new ones may be registered, and this count is the number
diff --git a/src/libstd/rt/unwind/seh.rs b/src/libstd/rt/unwind/seh.rs
index ed44f9a8bda..8c793758166 100644
--- a/src/libstd/rt/unwind/seh.rs
+++ b/src/libstd/rt/unwind/seh.rs
@@ -53,6 +53,7 @@ use prelude::v1::*;
 
 use any::Any;
 use libc::{c_ulong, DWORD, c_void};
+use ptr;
 use sys_common::thread_local::StaticKey;
 
 //                        0x R U S T
@@ -98,7 +99,7 @@ pub unsafe fn panic(data: Box<Any + Send + 'static>) -> ! {
     rtassert!(PANIC_DATA.get().is_null());
     PANIC_DATA.set(Box::into_raw(exception) as *mut u8);
 
-    RaiseException(RUST_PANIC, 0, 0, 0 as *const _);
+    RaiseException(RUST_PANIC, 0, 0, ptr::null());
     rtabort!("could not unwind stack");
 }
 
@@ -108,7 +109,7 @@ pub unsafe fn cleanup(ptr: *mut u8) -> Box<Any + Send + 'static> {
     rtassert!(ptr as DWORD == RUST_PANIC);
 
     let data = PANIC_DATA.get() as *mut Box<Any + Send + 'static>;
-    PANIC_DATA.set(0 as *mut u8);
+    PANIC_DATA.set(ptr::null_mut());
     rtassert!(!data.is_null());
 
     *Box::from_raw(data)