add regression test for #27592. Fixes #27592.

diff --git a/src/test/compile-fail/issue-27592.rs b/src/test/compile-fail/issue-27592.rs
new file mode 100644 (file)
index 0000000..ccf5eab
--- /dev/null
+++ b/src/test/compile-fail/issue-27592.rs
@@ -0,0 +1,29 @@
+// 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.
+
+// Regression test for issue #27591.
+
+fn write<'a, F: ::std::ops::FnOnce()->::std::fmt::Arguments<'a> + 'a>(fcn: F) {
+    use std::fmt::Write;
+    let _ = match fcn() { a => write!(&mut Stream, "{}", a), };
+}
+
+struct Stream;
+impl ::std::fmt::Write for Stream {
+    fn write_str(&mut self, _s: &str) -> ::std::fmt::Result {
+        Ok( () )
+    }
+}
+
+fn main() {
+    write(|| format_args!("{}", "Hello world"));
+    //~^ ERROR borrowed value does not live long enough
+    //~| ERROR borrowed value does not live long enough
+}