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-rw-r--r--src/liballoc/heap.rs1
-rw-r--r--src/liballoc/lib.rs1
2 files changed, 2 insertions, 0 deletions
diff --git a/src/liballoc/heap.rs b/src/liballoc/heap.rs
index 3b93171386a..f9936b7a16a 100644
--- a/src/liballoc/heap.rs
+++ b/src/liballoc/heap.rs
@@ -198,6 +198,7 @@ mod imp {
     extern {}
 
     extern {
+        #[allocator]
         fn je_mallocx(size: size_t, flags: c_int) -> *mut c_void;
         fn je_rallocx(ptr: *mut c_void, size: size_t, flags: c_int) -> *mut c_void;
         fn je_xallocx(ptr: *mut c_void, size: size_t, extra: size_t, flags: c_int) -> size_t;
diff --git a/src/liballoc/lib.rs b/src/liballoc/lib.rs
index 5c9a42a8a71..34c0686fe37 100644
--- a/src/liballoc/lib.rs
+++ b/src/liballoc/lib.rs
@@ -69,6 +69,7 @@
 
 #![feature(no_std)]
 #![no_std]
+#![feature(allocator)]
 #![feature(lang_items, unsafe_destructor)]
 #![feature(box_syntax)]
 #![feature(optin_builtin_traits)]