1 files changed, 42 insertions, 0 deletions
diff --git a/src/test/run-pass/packed-struct-drop-aligned.rs b/src/test/run-pass/packed-struct-drop-aligned.rs
new file mode 100644
index 00000000000..bbe31a65e86
--- /dev/null
+++ b/src/test/run-pass/packed-struct-drop-aligned.rs
@@ -0,0 +1,42 @@
+// 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.
+
+use std::cell::Cell;
+use std::mem;
+
+struct Aligned<'a> {
+    drop_count: &'a Cell<usize>
+}
+
+#[inline(never)]
+fn check_align(ptr: *const Aligned) {
+    assert_eq!(ptr as usize % mem::align_of::<Aligned>(),
+               0);
+}
+
+impl<'a> Drop for Aligned<'a> {
+    fn drop(&mut self) {
+        check_align(self);
+        self.drop_count.set(self.drop_count.get() + 1);
+    }
+}
+
+#[repr(packed)]
+struct Packed<'a>(u8, Aligned<'a>);
+
+fn main() {
+    let drop_count = &Cell::new(0);
+    {
+        let mut p = Packed(0, Aligned { drop_count });
+        p.1 = Aligned { drop_count };
+        assert_eq!(drop_count.get(), 1);
+    }
+    assert_eq!(drop_count.get(), 2);
+}