Transition to the new object lifetime defaults #27045
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defaults completely.
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Just to be clear, the description should probably say "this is a [breaking change], but all such breaking cases are currently flagged with a warning, as specified in RFC 1156." (Right?) That is, I find it less scary to spell that out explicitly to the person writing up the release notes for the associated release. |
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@nikomatsakis yay for removing tons of code. r=me after you revise the description as advised above. |
Updated. |
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@bors r=pnkfelix |
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📌 Commit de6b3c2 has been approved by |
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@bors: p=1 |
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⌛ Testing commit de6b3c2 with merge a146ab2... |
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💔 Test failed - auto-mac-64-nopt-t |
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@bors: retry On Fri, Jul 17, 2015 at 9:18 AM, bors notifications@github.com wrote:
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…nkfelix Transition to the new object lifetime defaults, replacing the old defaults completely. r? @pnkfelix This is a [breaking-change] as specified by [RFC 1156][1156] (though all cases that would break should have been receiving warnings starting in Rust 1.2). Types like `&'a Box<Trait>` (or `&'a Rc<Trait>`, etc) will change from being interpreted as `&'a Box<Trait+'a>` to `&'a Box<Trait+'static>`. To restore the old behavior, write the `+'a` explicitly. For example, the function: ```rust trait Trait { } fn foo(x: &Box<Trait>) { ... } ``` would be rewritten as: ```rust trait Trait { } fn foo(x: &'a Box<Trait+'a>) { ... } ``` if one wanted to preserve the current typing. [1156]: https://github.com/rust-lang/rfcs/blob/master/text/1156-adjust-default-object-bounds.md
Transition to the new object lifetime defaults, replacing the old defaults completely.
r? @pnkfelix
This is a [breaking-change] as specified by RFC 1156 (though all cases that would break should have been receiving warnings starting in Rust 1.2). Types like
&'a Box<Trait>(or&'a Rc<Trait>, etc) will change from being interpreted as&'a Box<Trait+'a>to&'a Box<Trait+'static>. To restore the old behavior, write the+'aexplicitly. For example, the function:would be rewritten as:
if one wanted to preserve the current typing.