handle dtors having generics in an order different from their ADT

Fixes #27997.

1 files changed, 48 insertions, 0 deletions

diff --git a/src/test/run-pass/issue-27997.rs b/src/test/run-pass/issue-27997.rs
new file mode 100644
index 00000000000..cd81f689693
--- /dev/null
+++ b/src/test/run-pass/issue-27997.rs
@@ -0,0 +1,48 @@
+// Copyright 2015 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.
+
+#![feature(const_fn)]
+
+use std::sync::atomic::{Ordering, AtomicUsize};
+
+use std::mem;
+struct S<U,V> {
+    _u: U,
+    size_of_u: usize,
+    _v: V,
+    size_of_v: usize
+}
+
+impl<U, V> S<U, V> {
+    fn new(u: U, v: V) -> Self {
+        S {
+            _u: u,
+            size_of_u: mem::size_of::<U>(),
+            _v: v,
+            size_of_v: mem::size_of::<V>()
+        }
+    }
+}
+
+static COUNT: AtomicUsize = AtomicUsize::new(0);
+
+impl<V, U> Drop for S<U, V> {
+    fn drop(&mut self) {
+        assert_eq!(mem::size_of::<U>(), self.size_of_u);
+        assert_eq!(mem::size_of::<V>(), self.size_of_v);
+        COUNT.store(COUNT.load(Ordering::SeqCst)+1, Ordering::SeqCst);
+    }
+}
+
+fn main() {
+    assert_eq!(COUNT.load(Ordering::SeqCst), 0);
+    { S::new(0u8, 1u16); }
+    assert_eq!(COUNT.load(Ordering::SeqCst), 1);
+}