Merge pull request #20 from ordian/change_mutability_to_match_c_lib

libmimalloc-sys: change ptr mutability to match the mimalloc c lib

Author: octavonce

libmimalloc-sys/src/lib.rs

@@ -3,13 +3,13 @@
 use core::ffi::c_void;
 
 extern "C" {
-    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;
+    pub fn mi_zalloc(size: usize) -> *mut c_void;
+    pub fn mi_malloc(size: usize) -> *mut c_void;
+    pub fn mi_realloc(p: *mut c_void, size: usize) -> *mut c_void;
+    pub fn mi_zalloc_aligned(size: usize, alignment: usize) -> *mut c_void;
+    pub fn mi_malloc_aligned(size: usize, alignment: usize) -> *mut c_void;
+    pub fn mi_realloc_aligned(p: *mut c_void, size: usize, alignment: usize) -> *mut c_void;
+    pub fn mi_free(p: *mut c_void) -> c_void;
     pub fn mi_usable_size(p: *mut c_void) -> usize;
 }
 
@@ -20,20 +20,20 @@ mod tests {
     #[test]
     fn it_frees_memory_malloc() {
         let ptr = unsafe { mi_malloc_aligned(8, 8) } as *mut u8;
-        unsafe { mi_free(ptr as *const c_void) };
+        unsafe { mi_free(ptr as *mut c_void) };
     }
 
     #[test]
     fn it_frees_memory_zalloc() {
         let ptr = unsafe { mi_zalloc_aligned(8, 8) } as *mut u8;
-        unsafe { mi_free(ptr as *const c_void) };
+        unsafe { mi_free(ptr as *mut c_void) };
     }
 
     #[test]
     fn it_frees_memory_realloc() {
         let ptr = unsafe { mi_malloc_aligned(8, 8) } as *mut u8;
-        let ptr = unsafe { mi_realloc_aligned(ptr as *const c_void, 8, 8) } as *mut u8;
-        unsafe { mi_free(ptr as *const c_void) };
+        let ptr = unsafe { mi_realloc_aligned(ptr as *mut c_void, 8, 8) } as *mut u8;
+        unsafe { mi_free(ptr as *mut c_void) };
     }
 
     #[test]

src/lib.rs

@@ -94,15 +94,15 @@ unsafe impl GlobalAlloc for MiMalloc {
 
     #[inline]
     unsafe fn dealloc(&self, ptr: *mut u8, _layout: Layout) {
-        mi_free(ptr as *const c_void);
+        mi_free(ptr as *mut c_void);
     }
 
     #[inline]
     unsafe fn realloc(&self, ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8 {
         if layout.align() <= MIN_ALIGN && layout.align() <= layout.size() {
-            mi_realloc(ptr as *const c_void, new_size) as *mut u8
+            mi_realloc(ptr as *mut c_void, new_size) as *mut u8
         } else {
-            mi_realloc_aligned(ptr as *const c_void, new_size, layout.align()) as *mut u8
+            mi_realloc_aligned(ptr as *mut c_void, new_size, layout.align()) as *mut u8
         }
     }
 }