1 files changed, 10 insertions, 0 deletions
diff --git a/components/util/lib.rs b/components/util/lib.rs
index 58289bfa581..e820c0e2c11 100644
--- a/components/util/lib.rs
+++ b/components/util/lib.rs
@@ -32,6 +32,8 @@ extern crate url;
 #[phase(plugin)]
 extern crate string_cache_macros;
 
+use std::sync::Arc;
+
 pub mod bloom;
 pub mod cache;
 pub mod debug_utils;
@@ -55,3 +57,11 @@ pub mod workqueue;
 pub fn breakpoint() {
     unsafe { ::std::intrinsics::breakpoint() };
 }
+
+// Workaround for lack of `ptr_eq` on Arcs...
+#[inline]
+pub fn arc_ptr_eq<T: 'static + Send + Sync>(a: &Arc<T>, b: &Arc<T>) -> bool {
+    let a: &T = a.deref();
+    let b: &T = b.deref();
+    (a as *const T) == (b as *const T)
+}