diff --git a/src/lib.rs b/src/lib.rs
index 4791b2c..7147522 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -97,6 +97,18 @@ pub extern "C" fn __rust_allocate(size: usize, align: usize) -> *mut u8 {
     })
 }
 
+#[doc(hidden)]
+#[no_mangle]
+pub extern fn __rust_allocate_zeroed(size: usize, align: usize) -> *mut u8 {
+    let ptr = __rust_allocate(size, align);
+    if !ptr.is_null() {
+        unsafe {
+            ptr::write_bytes(ptr, 0, size);
+        }
+    }
+    ptr
+}
+
 /// Rust de-allocation function (c.f. free)
 #[doc(hidden)]
 #[no_mangle]