debuginfo: Add test case for recursive enum types (issue #11083)

Author: michaelwoerister

src/test/debug-info/recursive-enum.rs

@@ -0,0 +1,33 @@
+// 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.
+
+// xfail-android: FIXME(#10381)
+
+// compile-flags:-Z extra-debug-info
+// debugger:run
+
+// Test whether compiling a recursive enum definition crashes debug info generation. The test case
+// is taken from issue #11083.
+
+#[allow(unused_variable)];
+
+pub struct Window<'a> {
+    callbacks: WindowCallbacks<'a>
+}
+
+struct WindowCallbacks<'a> {
+    pos_callback: Option<WindowPosCallback<'a>>,
+}
+
+pub type WindowPosCallback<'a> = 'a |&Window, i32, i32|;
+
+fn main() {
+    let x = WindowCallbacks { pos_callback: None };
+}