From 205f84f13c69dd20caa6ecb6fc1bbed9171f0703 Mon Sep 17 00:00:00 2001
From: Brian Koropoff <bkoropoff@gmail.com>
Date: Sat, 1 Nov 2014 01:56:09 -0700
Subject: [PATCH] Add compile-fail test of DST rvalues resulting from
overloaded index
---
src/test/compile-fail/dst-index.rs | 40 ++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
create mode 100644 src/test/compile-fail/dst-index.rs
diff --git a/src/test/compile-fail/dst-index.rs b/src/test/compile-fail/dst-index.rs
new file mode 100644
index 00000000000..542562b69e6
--- /dev/null
+++ b/src/test/compile-fail/dst-index.rs
@@ -0,0 +1,40 @@
+// 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.
+
+// Test that overloaded index expressions with DST result types
+// can't be used as rvalues
+
+use std::ops::Index;
+use std::fmt::Show;
+
+struct S;
+
+impl Index<uint, str> for S {
+ fn index<'a>(&'a self, _: &uint) -> &'a str {
+ "hello"
+ }
+}
+
+struct T;
+
+impl Index<uint, Show + 'static> for T {
+ fn index<'a>(&'a self, idx: &uint) -> &'a Show + 'static {
+ static x: uint = 42;
+ &x
+ }
+}
+
+fn main() {
+ S[0];
+ //~^ ERROR E0161
+ T[0];
+ //~^ ERROR cannot move out of dereference
+ //~^^ ERROR E0161
+}