Ensure an error is raised on infinite recursion

Author: flaper87

src/test/compile-fail/issue-8727.rs

@@ -0,0 +1,24 @@
+// Copyright 2014 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.
+
+
+// Verify the compiler fails with an error on infinite function
+// recursions.
+
+struct Data(~Option<Data>);
+
+fn generic<T>( _ : ~[(Data,T)] ) {let rec : ~[(Data,(bool,T))] = ~[]; generic( rec ); } //~ ERROR overly deep expansion of inlined function
+
+
+fn main () {
+    // Use generic<T> at least once to trigger instantiation.
+    let input : ~[(Data,())] = ~[];
+    generic(input);
+}