9851b4fbbf
This commit performs a pass over the implementations of the new `String` trait
in the formatting module. Some implementations were removed as a conservative
move pending an upcoming convention about `String` implementations, and some
were added in order to retain consistency across the libraries. Specifically:
* All "smart pointers" implement `String` now, adding missing implementations
for `Arc` and `Rc`.
* The `Vec<T>` and `[T]` types no longer implement `String`.
* The `*const T` and `*mut T` type no longer implement `String`.
* The `()` type no longer implements `String`.
* The `Path` type's `Show` implementation does not surround itself with `Path
{}` (a minor tweak).
All implementations of `String` in this PR were also marked `#[stable]` to
indicate that the types will continue to implement the `String` trait regardless
of what it looks like.
40 lines
1.0 KiB
Rust
40 lines
1.0 KiB
Rust
// Copyright 2013 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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// This assumes the packed and non-packed structs are different sizes.
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// the error points to the start of the file, not the line with the
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// transmute
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// error-pattern: transmute called on types with different size
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#![feature(slicing_syntax)]
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use std::mem;
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#[repr(packed)]
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struct Foo<T,S> {
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bar: T,
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baz: S
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}
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struct Oof<T, S> {
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rab: T,
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zab: S
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}
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fn main() {
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let foo = Foo { bar: [1u8, 2, 3, 4, 5], baz: 10i32 };
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unsafe {
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let oof: Oof<[u8; 5], i32> = mem::transmute(foo);
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println!("{:?} {:?}", &oof.rab[], oof.zab);
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}
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}
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