1 files changed, 30 insertions, 0 deletions
diff --git a/src/liballoc/util.rs b/src/liballoc/util.rs
new file mode 100644
index 00000000000..7e35af79eab
--- /dev/null
+++ b/src/liballoc/util.rs
@@ -0,0 +1,30 @@
+// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![doc(hidden)]
+
+use core::mem;
+use core::raw;
+
+#[inline]
+#[deprecated]
+pub fn get_box_size(body_size: uint, body_align: uint) -> uint {
+    let header_size = mem::size_of::<raw::Box<()>>();
+    let total_size = align_to(header_size, body_align) + body_size;
+    total_size
+}
+
+// Rounds size to the next alignment. Alignment is required to be a power of
+// two.
+#[inline]
+fn align_to(size: uint, align: uint) -> uint {
+    assert!(align != 0);
+    (size + align - 1) & !(align - 1)
+}