Add a test for #29071

Fixes #29071

Author: nagisa

src/test/run-pass/issue-29071.rs

@@ -0,0 +1,21 @@
+// 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.
+fn ret() -> u32 {
+    static x: u32 = 10;
+    x & if true { 10u32 } else { 20u32 } & x
+}
+
+fn ret2() -> &'static u32 {
+    static x: u32 = 10;
+    if true { 10u32; } else { 20u32; }
+    &x
+}
+
+fn main() {}