Add regression test for #23281

Closes #23281

src/test/compile-fail/issue-23281.rs

@@ -0,0 +1,20 @@
+// Copyright 2016 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.
+
+// ignore-tidy-linelength
+
+pub struct Struct;
+
+impl Struct {
+    pub fn function(funs: Vec<Fn() -> ()>) {}
+    //~^ ERROR the trait bound `std::ops::Fn() + 'static: std::marker::Sized` is not satisfied
+}
+
+fn main() {}