From 14848641c80bd2215635e1d692a10fa4681d6637 Mon Sep 17 00:00:00 2001
From: Tobias Bucher <tobiasbucher5991@gmail.com>
Date: Wed, 19 Apr 2017 20:22:18 +0200
Subject: [PATCH] Add `__rust_alloc_zeroed` to `naive_ralloc`

This is fallout from rust-lang/rust#40409 which requires that all
allocators provide a `__rust_alloc_zeroed` function.

Fixes #136.
---
 naive_ralloc/src/lib.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/naive_ralloc/src/lib.rs b/naive_ralloc/src/lib.rs
index 7285abe02..2cffaeda0 100644
--- a/naive_ralloc/src/lib.rs
+++ b/naive_ralloc/src/lib.rs
@@ -36,6 +36,16 @@ pub extern fn __rust_allocate(size: usize, _align: usize) -> *mut u8 {
     allocate(size)
 }
 
+#[linkage = "external"]
+#[no_mangle]
+pub extern fn __rust_allocate_zeroed(size: usize, align: usize) -> *mut u8 {
+    unsafe {
+        let result = __rust_allocate(size, align);
+        intrinsics::write_bytes(result, 0, size);
+        result
+    }
+}
+
 #[linkage = "external"]
 #[no_mangle]
 pub extern fn __rust_deallocate(_ptr: *mut u8, _old_size: usize, _align: usize) {