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implement pattern-binding-modes RFC

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See the [RFC] and [tracking issue].

[tracking issue]: https://github.com/rust-lang/rust/issues/42640
[RFC]: 491e0af/text/2005-match-ergonomics.md
This commit is contained in:
Tobias Schottdorf 2017-10-06 16:30:23 -04:00
parent a8feaee5b6
commit de55b4f077
46 changed files with 1406 additions and 75 deletions
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21
src/test/ui/rfc-2005-default-binding-mode/no-double-error.rs Normal file
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@ -0,0 +1,21 @@
// Copyright 2017 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.
// Without caching type lookups in FnCtxt.resolve_ty_and_def_ufcs
// the error below would be reported twice (once when checking
// for a non-ref pattern, once when processing the pattern).
fn main() {
let foo = 22;
match foo {
u32::XXX => { }
_ => { }
}
}