35 lines
1.3 KiB
Rust
35 lines
1.3 KiB
Rust
// Copyright 2012 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 #14893. Tests that casts from vectors don't behave strangely in the
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// presence of the `_` type shorthand notation.
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// Update: after a change to the way casts are done, we have more type information
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// around and so the errors here are no longer exactly the same.
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struct X {
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y: [u8; 2],
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}
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fn main() {
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let x1 = X { y: [0, 0] };
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// No longer a type mismatch - the `_` can be fully resolved by type inference.
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let p1: *const u8 = &x1.y as *const _;
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let t1: *const [u8; 2] = &x1.y as *const _;
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let h1: *const [u8; 2] = &x1.y as *const [u8; 2];
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let mut x1 = X { y: [0, 0] };
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// This is still an error since we don't allow casts from &mut [T; n] to *mut T.
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let p1: *mut u8 = &mut x1.y as *mut _; //~ ERROR casting
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let t1: *mut [u8; 2] = &mut x1.y as *mut _;
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let h1: *mut [u8; 2] = &mut x1.y as *mut [u8; 2];
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}
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