Merge ref 'a1dbb443527b' from rust-lang/rust

Pull recent changes from https://github.com/rust-lang/rust via Josh.

Upstream ref: a1dbb443527bd126452875eb5d5860c1d001d761
Filtered ref: c2339048a82c55166f9b9ee83fd618be252a6e23

This merge was created using https://github.com/rust-lang/josh-sync.

1 files changed, 52 insertions, 0 deletions

diff --git a/tests/ui/pattern/ref-in-function-parameter-patterns-8860.rs b/tests/ui/pattern/ref-in-function-parameter-patterns-8860.rs
new file mode 100644
index 00000000000..1a67caf021c
--- /dev/null
+++ b/tests/ui/pattern/ref-in-function-parameter-patterns-8860.rs
@@ -0,0 +1,52 @@
+// https://github.com/rust-lang/rust/issues/8860
+//@ run-pass
+// FIXME(static_mut_refs): this could use an atomic
+#![allow(static_mut_refs)]
+#![allow(dead_code)]
+
+static mut DROP: isize = 0;
+static mut DROP_S: isize = 0;
+static mut DROP_T: isize = 0;
+
+struct S;
+impl Drop for S {
+    fn drop(&mut self) {
+        unsafe {
+            DROP_S += 1;
+            DROP += 1;
+        }
+    }
+}
+fn f(ref _s: S) {}
+
+struct T { i: isize }
+impl Drop for T {
+    fn drop(&mut self) {
+        unsafe {
+            DROP_T += 1;
+            DROP += 1;
+        }
+    }
+}
+fn g(ref _t: T) {}
+
+fn do_test() {
+    let s = S;
+    f(s);
+    unsafe {
+        assert_eq!(1, DROP);
+        assert_eq!(1, DROP_S);
+    }
+    let t = T { i: 1 };
+    g(t);
+    unsafe { assert_eq!(1, DROP_T); }
+}
+
+fn main() {
+    do_test();
+    unsafe {
+        assert_eq!(2, DROP);
+        assert_eq!(1, DROP_S);
+        assert_eq!(1, DROP_T);
+    }
+}