From c209eed3a64c60cc5795b57577beb437ace08151 Mon Sep 17 00:00:00 2001
From: edef <edef@edef.eu>
Date: Wed, 24 Dec 2014 06:30:54 +0100
Subject: [PATCH] top of stack is mutable

---
 src/stack.rs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/stack.rs b/src/stack.rs
index c465ba2..a911214 100644
--- a/src/stack.rs
+++ b/src/stack.rs
@@ -51,12 +51,12 @@ impl Stack {
     }
   }
 
-  pub fn top(&self) -> *const u8 {
+  pub fn top(&self) -> *mut u8 {
     unsafe {
       match *self {
-        Stack::Native { .. } => ptr::null(),
+        Stack::Native { .. } => ptr::null_mut(),
         Stack::Managed { ref buf, .. } => {
-          buf.data().offset(buf.len() as int) as *const _
+          buf.data().offset(buf.len() as int)
         }
       }
     }