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The current indentation level would indicate that Boolean literals are on the same level as Integer and Float literals under Number literals, unindenting moves it to the same scope as Character and string literals, Byte and byte string literals, and Number literals under Literals.
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In the HTML version of the documentation, it isn't rendered so might as well use the unicode representation.
Part of the problem was that putting a math unicode character wasn't
rendering properly in the pdf, so extra steps were needed to define
the unicode charecter ⊥ in reference.tex
closes #15285
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The current indentation level would indicate that Boolean literals are on the same level as Integer and Float literals under Number literals, unindenting moves it to the same scope as Character and string literals, Byte and byte string literals, and Number literals under Literals.
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This is a revival of #19517 (per request of @alexcrichton) now that the new snapshots have landed. We can now remove the last feature gates for if_let, while_let, and tuple_indexing scattered throughout the test sources since these features have been added to Rust.
Closes #19473.
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Fixes #9266
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cc @steveklabnick
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Fixes #9266
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Fixes #19595.
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This change makes the compiler no longer infer whether types (structures
and enumerations) implement the `Copy` trait (and thus are implicitly
copyable). Rather, you must implement `Copy` yourself via `impl Copy for
MyType {}`.
A new warning has been added, `missing_copy_implementations`, to warn
you if a non-generic public type has been added that could have
implemented `Copy` but didn't.
For convenience, you may *temporarily* opt out of this behavior by using
`#![feature(opt_out_copy)]`. Note though that this feature gate will never be
accepted and will be removed by the time that 1.0 is released, so you should
transition your code away from using it.
This breaks code like:
#[deriving(Show)]
struct Point2D {
x: int,
y: int,
}
fn main() {
let mypoint = Point2D {
x: 1,
y: 1,
};
let otherpoint = mypoint;
println!("{}{}", mypoint, otherpoint);
}
Change this code to:
#[deriving(Show)]
struct Point2D {
x: int,
y: int,
}
impl Copy for Point2D {}
fn main() {
let mypoint = Point2D {
x: 1,
y: 1,
};
let otherpoint = mypoint;
println!("{}{}", mypoint, otherpoint);
}
This is the backwards-incompatible part of #13231.
Part of RFC #3.
[breaking-change]
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Fixes #19595.
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In regards to:
https://github.com/rust-lang/rust/issues/19253#issuecomment-64836729
This commit:
* Changes the #deriving code so that it generates code that utilizes fewer
reexports (in particur Option::* and Result::*), which is necessary to
remove those reexports in the future
* Changes other areas of the codebase so that fewer reexports are utilized
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Descriptions and licenses are handled by Cargo now, so there's no reason
to keep these attributes around.
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An example of how implementations work without traits would be handy
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An example of how type definitions work would be handy
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This PR completes the removal of the runtime system and green-threaded abstractions as part of implementing [RFC 230](https://github.com/rust-lang/rfcs/pull/230).
Specifically:
* It removes the `Runtime` trait, welding the scheduling infrastructure directly to native threads.
* It removes `libgreen` and `libnative` entirely.
* It rewrites `sync::mutex` as a trivial layer on top of native mutexes. Eventually, the two modules will be merged.
* It hides the vast majority of `std::rt`.
This completes the basic task of removing the runtime system (I/O and scheduling) and components that depend on it.
After this lands, a follow-up PR will pull the `rustrt` crate back into `std`, turn `std::task` into `std::thread` (with API changes to go along with it), and completely cut out the remaining startup/teardown sequence. Other changes, including new [TLS](https://github.com/rust-lang/rfcs/pull/461) and synchronization are in the RFC or pre-RFC phase.
Closes #17325
Closes #18687
[breaking-change]
r? @alexcrichton
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As discussed in pull #19068, trying to make the wording more clear for unsafe code vs undefined behavior.
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Futureproof Rust for fancier suffixed literals. The Rust compiler tokenises a literal followed immediately (no whitespace) by an identifier as a single token: (for example) the text sequences `"foo"bar`, `1baz` and `1u1024` are now a single token rather than the pairs `"foo"` `bar`, `1` `baz` and `1u` `1024` respectively.
The compiler rejects all such suffixes in the parser, except for the 12 numeric suffixes we have now.
I'm fairly sure this will affect very few programs, since it's not currently legal to have `<literal><identifier>` in a Rust program, except in a macro invocation. Any macro invocation relying on this behaviour can simply separate the two tokens with whitespace: `foo!("bar"baz)` becomes `foo!("bar" baz)`.
This implements [RFC 463](https://github.com/rust-lang/rfcs/blob/master/text/0463-future-proof-literal-suffixes.md), and so closes https://github.com/rust-lang/rust/issues/19088.
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This changes the stated grammar of literals to move all suffixes into
the generic literal production.
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This fixes the gap in the language definition causing #18726 by defining
a clear bound on the maximum size for libraries to enforce.
Closes #18069
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new tests relating to HRTB, consolidate the `unboxed_closures` and `overloaded_calls` feature gates.
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Consolidate the `unboxed_closure_sugar` and `unboxed_closure` feature gates.
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Updated all the adjacent character literals in the BCNF that cannot have an optional space between them
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This breaks code that referred to variant names in the same namespace as
their enum. Reexport the variants in the old location or alter code to
refer to the new locations:
```
pub enum Foo {
A,
B
}
fn main() {
let a = A;
}
```
=>
```
pub use self::Foo::{A, B};
pub enum Foo {
A,
B
}
fn main() {
let a = A;
}
```
or
```
pub enum Foo {
A,
B
}
fn main() {
let a = Foo::A;
}
```
[breaking-change]
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Start comment is a string literal while end comment is made up of two character literals. This change is to make them consistent.
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Fixes #18288
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