1 files changed, 36 insertions, 0 deletions
diff --git a/src/test/ui/allocator/xcrate-use.rs b/src/test/ui/allocator/xcrate-use.rs
new file mode 100644
index 000000000..edd4df75e
--- /dev/null
+++ b/src/test/ui/allocator/xcrate-use.rs
@@ -0,0 +1,36 @@
+// run-pass
+
+// aux-build:custom.rs
+// aux-build:helper.rs
+// no-prefer-dynamic
+
+#![feature(allocator_api)]
+#![feature(slice_ptr_get)]
+
+extern crate custom;
+extern crate helper;
+
+use std::alloc::{Allocator, Global, Layout, System};
+use std::sync::atomic::{AtomicUsize, Ordering};
+
+#[global_allocator]
+static GLOBAL: custom::A = custom::A(AtomicUsize::new(0));
+
+fn main() {
+    unsafe {
+        let n = GLOBAL.0.load(Ordering::SeqCst);
+        let layout = Layout::from_size_align(4, 2).unwrap();
+
+        let memory = Global.allocate(layout.clone()).unwrap();
+        helper::work_with(&memory);
+        assert_eq!(GLOBAL.0.load(Ordering::SeqCst), n + 1);
+        Global.deallocate(memory.as_non_null_ptr(), layout);
+        assert_eq!(GLOBAL.0.load(Ordering::SeqCst), n + 2);
+
+        let memory = System.allocate(layout.clone()).unwrap();
+        assert_eq!(GLOBAL.0.load(Ordering::SeqCst), n + 2);
+        helper::work_with(&memory);
+        System.deallocate(memory.as_non_null_ptr(), layout);
+        assert_eq!(GLOBAL.0.load(Ordering::SeqCst), n + 2);
+    }
+}