Removed libc dependency

Cargo.toml

@@ -20,7 +20,6 @@ members = ["libmimalloc-sys" ]
 travis-ci = { repository = "purpleprotocol/mimalloc_rust" }
 
 [dependencies]
-libc = "0.2"
 libmimalloc-sys = { path = "libmimalloc-sys", version = "0.1.10" }
 
 [features]

libmimalloc-sys/Cargo.toml

@@ -10,7 +10,6 @@ description = "Sys crate wrapping the mimalloc allocator"
 license = "MIT"
 
 [dependencies]
-libc = "0.2"
 
 [build-dependencies]
 cmake = "0.1"

libmimalloc-sys/src/lib.rs

@@ -1,14 +1,14 @@
 // Copyright 2019 Octavian Oncescu
 
-use libc::{c_void, size_t};
+use core::ffi::c_void;
 
 extern "C" {
-    pub fn mi_zalloc(size: size_t) -> *const c_void;
-    pub fn mi_malloc(size: size_t) -> *const c_void;
-    pub fn mi_realloc(p: *const c_void, size: size_t) -> *const c_void;
-    pub fn mi_zalloc_aligned(size: size_t, alignment: size_t) -> *const c_void;
-    pub fn mi_malloc_aligned(size: size_t, alignment: size_t) -> *const c_void;
-    pub fn mi_realloc_aligned(p: *const c_void, size: size_t, alignment: size_t) -> *const c_void;
+    pub fn mi_zalloc(size: usize) -> *const c_void;
+    pub fn mi_malloc(size: usize) -> *const c_void;
+    pub fn mi_realloc(p: *const c_void, size: usize) -> *const c_void;
+    pub fn mi_zalloc_aligned(size: usize, alignment: usize) -> *const c_void;
+    pub fn mi_malloc_aligned(size: usize, alignment: usize) -> *const c_void;
+    pub fn mi_realloc_aligned(p: *const c_void, size: usize, alignment: usize) -> *const c_void;
     pub fn mi_free(p: *const c_void) -> c_void;
 }
 

src/lib.rs

@@ -27,7 +27,7 @@ extern crate libmimalloc_sys as ffi;
 
 use core::alloc::{GlobalAlloc, Layout};
 use ffi::*;
-use libc::c_void;
+use core::ffi::c_void;
 
 // Copied from https://github.com/rust-lang/rust/blob/master/src/libstd/sys_common/alloc.rs
 #[cfg(all(any(