From 1523298bc73b2ef9141163daae1f71d5908ade10 Mon Sep 17 00:00:00 2001
From: Brian Anderson <banderson@mozilla.com>
Date: Mon, 21 May 2012 18:35:35 -0700
Subject: [PATCH] core: Update vec_repr to include the box header

---
 src/libcore/vec.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/libcore/vec.rs b/src/libcore/vec.rs
index fdc8b1ed248..a743cbc5576 100644
--- a/src/libcore/vec.rs
+++ b/src/libcore/vec.rs
@@ -1162,7 +1162,12 @@ impl extensions<T> for [T] {
 mod unsafe {
     // FIXME: This should have crate visibility (#1893 blocks that)
     #[doc = "The internal representation of a vector"]
-    type vec_repr = {mut fill: uint, mut alloc: uint, data: u8};
+    type vec_repr = {
+        box_header: (uint, uint, uint, uint),
+        mut fill: uint,
+        mut alloc: uint,
+        data: u8
+    };
 
     #[doc = "
     Constructs a vector from an unsafe pointer to a buffer