1 files changed, 5 insertions, 5 deletions
diff --git a/src/libstd/sys/windows/backtrace.rs b/src/libstd/sys/windows/backtrace.rs
index ee2dd14955b..ce6af9fab8b 100644
--- a/src/libstd/sys/windows/backtrace.rs
+++ b/src/libstd/sys/windows/backtrace.rs
@@ -327,7 +327,7 @@ pub fn write(w: &mut Writer) -> IoResult<()> {
     let image = arch::init_frame(&mut frame, &context);
 
     // Initialize this process's symbols
-    let ret = SymInitialize(process, 0 as *mut libc::c_void, libc::TRUE);
+    let ret = SymInitialize(process, ptr::null_mut(), libc::TRUE);
     if ret != libc::TRUE { return Ok(()) }
     let _c = Cleanup { handle: process, SymCleanup: SymCleanup };
 
@@ -335,10 +335,10 @@ pub fn write(w: &mut Writer) -> IoResult<()> {
     let mut i = 0i;
     try!(write!(w, "stack backtrace:\n"));
     while StackWalk64(image, process, thread, &mut frame, &mut context,
-                      0 as *mut libc::c_void,
-                      0 as *mut libc::c_void,
-                      0 as *mut libc::c_void,
-                      0 as *mut libc::c_void) == libc::TRUE{
+                      ptr::null_mut(),
+                      ptr::null_mut(),
+                      ptr::null_mut(),
+                      ptr::null_mut()) == libc::TRUE{
         let addr = frame.AddrPC.Offset;
         if addr == frame.AddrReturn.Offset || addr == 0 ||
            frame.AddrReturn.Offset == 0 { break }