32 lines
1.0 KiB
Rust
32 lines
1.0 KiB
Rust
// Copyright 2015 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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// Issue #24644 - block causes a &Trait -> &Trait coercion:
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trait Trait {}
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struct Bar;
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impl Trait for Bar {}
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fn main() {
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let x: &[&Trait] = &[{ &Bar }];
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}
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// Issue #25748 - the cast causes an &Encoding -> &Encoding coercion:
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pub struct UTF8Encoding;
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pub const UTF_8: &'static UTF8Encoding = &UTF8Encoding;
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pub trait Encoding {}
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impl Encoding for UTF8Encoding {}
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pub fn f() -> &'static Encoding { UTF_8 as &'static Encoding }
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// Root of the problem: &Trait -> &Trait coercions:
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const FOO: &'static Trait = &Bar;
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const BAR: &'static Trait = FOO;
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fn foo() { let _x = BAR; }
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