05d3526132
Add support to `rustc_on_unimplemented` to reference the full path of
the annotated trait. For the following code:
```rust
pub mod Bar {
#[rustc_on_unimplemented = "test error `{Self}` with `{Bar}` `{Baz}` `{Quux}` in `{Foo}`"]
pub trait Foo<Bar, Baz, Quux> {}
}
```
the error message will be:
```
test error `std::string::String` with `u8` `_` `u32` in `Bar::Foo`
```
28 lines
1.0 KiB
Rust
28 lines
1.0 KiB
Rust
// Copyright 2016 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 new Index error message for slices
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// ignore-tidy-linelength
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#![feature(rustc_attrs)]
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use std::ops::Index;
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#[rustc_error]
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fn main() {
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let x = &[1, 2, 3] as &[i32];
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x[1i32]; //~ ERROR E0277
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//~| NOTE slice indices are of type `usize` or ranges of `usize`
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//~| NOTE required because of the requirements on the impl of `std::ops::Index<i32>`
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x[..1i32]; //~ ERROR E0277
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//~| NOTE slice indices are of type `usize` or ranges of `usize`
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//~| NOTE requirements on the impl of `std::ops::Index<std::ops::RangeTo<i32>>`
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}
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