1 files changed, 31 insertions, 0 deletions
diff --git a/src/test/ui/run-pass/structs-enums/enum-alignment.rs b/src/test/ui/run-pass/structs-enums/enum-alignment.rs
new file mode 100644
index 00000000000..827894f8f32
--- /dev/null
+++ b/src/test/ui/run-pass/structs-enums/enum-alignment.rs
@@ -0,0 +1,31 @@
+// Copyright 2013 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.
+
+
+use std::mem;
+
+fn addr_of<T>(ptr: &T) -> usize {
+    ptr as *const T as usize
+}
+
+fn is_aligned<T>(ptr: &T) -> bool {
+    unsafe {
+        let addr: usize = mem::transmute(ptr);
+        (addr % mem::min_align_of::<T>()) == 0
+    }
+}
+
+pub fn main() {
+    let x = Some(0u64);
+    match x {
+        None => panic!(),
+        Some(ref y) => assert!(is_aligned(y))
+    }
+}