48 lines
1.1 KiB
Rust
48 lines
1.1 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// Test that overloaded index expressions with DST result types
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// can't be used as rvalues
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use std::ops::Index;
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use std::fmt::Debug;
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#[derive(Copy)]
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struct S;
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impl Index<usize> for S {
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type Output = str;
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fn index(&self, _: usize) -> &str {
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"hello"
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}
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}
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#[derive(Copy)]
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struct T;
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impl Index<usize> for T {
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type Output = Debug + 'static;
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fn index<'a>(&'a self, idx: usize) -> &'a (Debug + 'static) {
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static x: usize = 42;
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&x
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}
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}
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fn main() {
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S[0];
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//~^ ERROR cannot move out of indexed content
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//~^^ ERROR E0161
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T[0];
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//~^ ERROR cannot move out of indexed content
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//~^^ ERROR E0161
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}
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