1 files changed, 43 insertions, 0 deletions
diff --git a/src/test/ui/run-pass/allocator/xcrate-use.rs b/src/test/ui/run-pass/allocator/xcrate-use.rs
new file mode 100644
index 00000000000..482e3b04aae
--- /dev/null
+++ b/src/test/ui/run-pass/allocator/xcrate-use.rs
@@ -0,0 +1,43 @@
+// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// aux-build:custom.rs
+// aux-build:helper.rs
+// no-prefer-dynamic
+
+#![feature(allocator_api)]
+
+extern crate custom;
+extern crate helper;
+
+use std::alloc::{Global, Alloc, System, Layout};
+use std::sync::atomic::{Ordering, ATOMIC_USIZE_INIT};
+
+#[global_allocator]
+static GLOBAL: custom::A = custom::A(ATOMIC_USIZE_INIT);
+
+fn main() {
+    unsafe {
+        let n = GLOBAL.0.load(Ordering::SeqCst);
+        let layout = Layout::from_size_align(4, 2).unwrap();
+
+        let ptr = Global.alloc(layout.clone()).unwrap();
+        helper::work_with(&ptr);
+        assert_eq!(GLOBAL.0.load(Ordering::SeqCst), n + 1);
+        Global.dealloc(ptr, layout.clone());
+        assert_eq!(GLOBAL.0.load(Ordering::SeqCst), n + 2);
+
+        let ptr = System.alloc(layout.clone()).unwrap();
+        assert_eq!(GLOBAL.0.load(Ordering::SeqCst), n + 2);
+        helper::work_with(&ptr);
+        System.dealloc(ptr, layout);
+        assert_eq!(GLOBAL.0.load(Ordering::SeqCst), n + 2);
+    }
+}