35 lines
846 B
Rust
35 lines
846 B
Rust
// Copyright 2017 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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use std::ops::{Index, IndexMut};
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struct S;
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struct H;
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impl S {
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fn f(&mut self) {}
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}
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impl Index<u32> for H {
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type Output = S;
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fn index(&self, index: u32) -> &S {
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unimplemented!()
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}
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}
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impl IndexMut<u32> for H {
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fn index_mut(&mut self, index: u32) -> &mut S {
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unimplemented!()
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}
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}
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fn main() {
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H["?"].f(); //~ ERROR mismatched types
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}
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