mirror of https://github.com/rust-lang/rust
25 lines
661 B
Rust
25 lines
661 B
Rust
//@ run-pass
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#![allow(dead_code)]
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#![allow(unused_variables)]
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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: &[&dyn 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 dyn Encoding { UTF_8 as &'static dyn Encoding }
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// Root of the problem: &Trait -> &Trait coercions:
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const FOO: &'static dyn Trait = &Bar;
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const BAR: &'static dyn Trait = FOO;
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fn foo() { let _x = BAR; }
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