Merge pull request #2 from djmcgill/master

Update to remove Opaque type and fix on nightly

Author: jmcomets

Cargo.lock

@@ -1,6 +1,6 @@
 #![feature(allocator_api)]
 
-use std::alloc::{GlobalAlloc, Layout, Opaque};
+use std::alloc::{GlobalAlloc, Layout};
 
 use std::os::raw::c_void;
 
@@ -15,11 +15,11 @@ extern "C" {
 pub struct TCMalloc;
 
 unsafe impl GlobalAlloc for TCMalloc {
-    unsafe fn alloc(&self, layout: Layout) -> *mut Opaque {
-        tc_memalign(layout.align(), layout.size()) as *mut Opaque
+    unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
+        tc_memalign(layout.align(), layout.size()) as *mut u8
     }
 
-    unsafe fn dealloc(&self, ptr: *mut Opaque, _layout: Layout) {
+    unsafe fn dealloc(&self, ptr: *mut u8, _layout: Layout) {
         tc_free(ptr as *mut c_void);
         // tc_free_sized(ptr as *mut c_void, layout.size());
     }