use nallocx instead of sallocx

Author: gnzlbg

src/liballoc_jemalloc/lib.rs

@@ -67,10 +67,6 @@ mod contents {
                        target_os = "dragonfly", target_os = "windows", target_env = "musl"),
                    link_name = "je_nallocx")]
         fn nallocx(size: size_t, flags: c_int) -> size_t;
-        #[cfg_attr(any(target_os = "macos", target_os = "android", target_os = "ios",
-                       target_os = "dragonfly", target_os = "windows", target_env = "musl"),
-                   link_name = "je_sallocx")]
-        fn sallocx(ptr: *mut c_void, flags: c_int) -> size_t;
     }
 
     const MALLOCX_ZERO: c_int = 0x40;
@@ -215,29 +211,18 @@ mod contents {
     #[no_mangle]
     #[linkage = "external"]
     pub unsafe extern fn __rde_realloc_excess(ptr: *mut u8,
-                                              _old_size: usize,
+                                              old_size: usize,
                                               old_align: usize,
                                               new_size: usize,
                                               new_align: usize,
                                               excess: *mut usize,
                                               err: *mut u8) -> *mut u8 {
-        if new_align != old_align {
-            ptr::write(err as *mut AllocErr,
-                       AllocErr::Unsupported { details: "can't change alignments" });
-            return 0 as *mut u8
-        }
-
-        let flags = align_to_flags(new_align);
-        let ptr = rallocx(ptr as *mut c_void, new_size, flags) as *mut u8;
-        if ptr.is_null() {
-            let layout = Layout::from_size_align_unchecked(new_size, new_align);
-            ptr::write(err as *mut AllocErr,
-                       AllocErr::Exhausted { request: layout });
-        } else {
-            let alloc_size = sallocx(ptr as *mut c_void, flags);
-            *excess = alloc_size;
+        let p = __rde_realloc(ptr, old_size, old_align, new_size, new_align, err);
+        if !p.is_null() {
+            let flags = align_to_flags(new_align);
+            *excess = nallocx(new_size, flags) as usize;
         }
-        ptr
+        p
     }
 
     #[no_mangle]