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POSIX has recvfrom(2) and sendto(2), but their name seem not to be
suitable with Rust. We already renamed getpeername(2) and
getsockname(2), so I think it makes sense.
Alternatively, `receive_from` would be fine. However, we have `.recv()`
so I chose `recv_from`.
Signed-off-by: OGINO Masanori <masanori.ogino@gmail.com>
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Earlier commits have established a baseline of `experimental` stability
for all crates under the facade (so their contents are considered
experimental within libstd). Since `experimental` is `allow` by
default, we should use the same baseline stability for libstd itself.
This commit adds `experimental` tags to all of the modules defined in
`std`, and `unstable` to `std` itself.
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When cloning a stream, the data is already guaranteed to be in a consistent
state, so there's no need to perform a zeroing. This prevents segfaults as seen
in #15231
Closes #15231
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floating point numbers for real.
This will break code that looks like:
let mut x = 0;
while ... {
x += 1;
}
println!("{}", x);
Change that code to:
let mut x = 0i;
while ... {
x += 1;
}
println!("{}", x);
Closes #15201.
[breaking-change]
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When cloning a stream, the data is already guaranteed to be in a consistent
state, so there's no need to perform a zeroing. This prevents segfaults as seen
in #15231
Closes #15231
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This change registers new snapshots, allowing `*T` to be removed from the language. This is a large breaking change, and it is recommended that if compiler errors are seen that any FFI calls are audited to determine whether they should be actually taking `*mut T`.
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This can break code that looked like:
impl Foo for Box<Any> {
fn f(&self) { ... }
}
let x: Box<Any + Send> = ...;
x.f();
Change such code to:
impl Foo for Box<Any> {
fn f(&self) { ... }
}
let x: Box<Any> = ...;
x.f();
That is, upcast before calling methods.
This is a conservative solution to #5781. A more proper treatment (see
the xfail'd `trait-contravariant-self.rs`) would take variance into
account. This change fixes the soundness hole.
Some library changes had to be made to make this work. In particular,
`Box<Any>` is no longer showable, and only `Box<Any+Send>` is showable.
Eventually, this restriction can be lifted; for now, it does not prove
too onerous, because `Any` is only used for propagating the result of
task failure.
This patch also adds a test for the variance inference work in #12828,
which accidentally landed as part of DST.
Closes #5781.
[breaking-change]
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We use re-exported pathes (e.g. std::io::Command) and original ones
(e.g. std::io::process::Command) together in examples now. Using
re-exported ones consistently avoids confusion.
Signed-off-by: OGINO Masanori <masanori.ogino@gmail.com>
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This breaks a fair amount of code. The typical patterns are:
* `for _ in range(0, 10)`: change to `for _ in range(0u, 10)`;
* `println!("{}", 3)`: change to `println!("{}", 3i)`;
* `[1, 2, 3].len()`: change to `[1i, 2, 3].len()`.
RFC #30. Closes #6023.
[breaking-change]
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This allows llvm to optimize away much of the overhead from using
the MemReader/MemWriters. My benchmarks showed it to shave 15% off
of my in progress serialization/json encoding.
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Replace its usage with byte string literals, except in `bytes!()` tests.
Also add a new snapshot, to be able to use the new b"foo" syntax.
The src/etc/2014-06-rewrite-bytes-macros.py script automatically
rewrites `bytes!()` invocations into byte string literals.
Pass it filenames as arguments to generate a diff that you can inspect,
or `--apply` followed by filenames to apply the changes in place.
Diffs can be piped into `tip` or `pygmentize -l diff` for coloring.
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This just takes a similar approach to reading stdin on windows by artificially
limiting the size of the buffers going in and out.
Closes #14940
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* os::pipe() now returns `IoResult<os::Pipe>`
* os::pipe() is now unsafe because it does not arrange for deallocation of file
descriptors
* PipeStream::pair() has been added. This is a safe method to get a pair of
pipes.
* Dealing with pipes in native process bindings have been improved to be more
robust in the face of failure and intermittent errors. This converts a few
fail!() situations to Err situations.
cc #13538
Closes #14724
[breaking-change]
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* os::pipe() now returns IoResult<os::Pipe>
* os::pipe() is now unsafe because it does not arrange for deallocation of file
descriptors
* os::Pipe fields are renamed from input to reader and out to write.
* PipeStream::pair() has been added. This is a safe method to get a pair of
pipes.
* Dealing with pipes in native process bindings have been improved to be more
robust in the face of failure and intermittent errors. This converts a few
fail!() situations to Err situations.
Closes #9458
cc #13538
Closes #14724
[breaking-change]
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Forking off a child which survives the parent is often a useful task, and is
currently not possible because the Process type will invoke `wait()` in its
destructor in order to prevent leaking resources. This function adds a new safe
method, `forget`, which can be used to consume an instance of `Process` which
will then not call `wait` in the destructor.
This new method is clearly documented as a leak of resources, but it must be
forcibly opted in to.
Closes #14467
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Closes #14797 (librustc: Fix the issue with labels shadowing variable names by making)
Closes #14823 (Improve error messages for io::fs)
Closes #14827 (libsyntax: Allow `+` to separate trait bounds from objects.)
Closes #14834 (configure: Don't sync unused submodules)
Closes #14838 (Remove typo on collections::treemap::UnionItems)
Closes #14839 (Fix the unused struct field lint for struct variants)
Closes #14840 (Clarify `Any` docs)
Closes #14846 (rustc: [T, ..N] and [T, ..N+1] are not the same)
Closes #14847 (Audit usage of NativeMutex)
Closes #14850 (remove unnecessary PaX detection)
Closes #14856 (librustc: Take in account mutability when casting array to raw ptr.)
Closes #14859 (librustc: Forbid `transmute` from being called on types whose size is)
Closes #14860 (Fix `quote_pat!` & parse outer attributes in `quote_item!`)
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The following features have been removed
* box [a, b, c]
* ~[a, b, c]
* box [a, ..N]
* ~[a, ..N]
* ~[T] (as a type)
* deprecated_owned_vector lint
All users of ~[T] should move to using Vec<T> instead.
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Fixes #11576 by making the code never run (and hence never
pass when the test was marked `should_fail`).
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This is mostly just a cosmetic change, continuing the work from #14333.
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Also renames the `Container` trait to `Collection`.
[breaking-change]
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Examples!
Fixes #14714.
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The rtio interface is a thin low-level interface over the I/O subsystems, and
the `Path` type is a little too high-level for this interface.
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This PR adds two features to make it possible to transform an `Iterator<u8>` into a `Reader`. The first patch adds a method to mutable slices that allows it to be updated with an `Iterator<T>` without paying for the bounds cost. The second adds a Iterator adaptor, `IterReader`, to provide that `Reader` interface.
I had two questions. First, are these named the right things? Second, should `IterReader` instead wrap an `Iterator<Result<u8, E>>`? This would allow you to `IterReader::new(rdr.bytes())`, which could be useful if you want to apply some iterator transformations on a reader while still exporting the Reader interface, but I'd expect there'd be a lot of overhead annotating each byte with an error result.
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This commit removes the <M: Any + Send> type parameter from Option::expect in
favor of just taking a hard-coded `&str` argument. This allows this function to
move into libcore.
Previous code using strings with `expect` will continue to work, but code using
this implicitly to transmit task failure will need to unwrap manually with a
`match` statement.
[breaking-change]
Closes #14008
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This completes the last stage of the renaming of the comparison hierarchy of
traits. This change renames TotalEq to Eq and TotalOrd to Ord.
In the future the new Eq/Ord will be filled out with their appropriate methods,
but for now this change is purely a renaming change.
[breaking-change]
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This is part of the ongoing renaming of the equality traits. See #12517 for more
details. All code using Eq/Ord will temporarily need to move to Partial{Eq,Ord}
or the Total{Eq,Ord} traits. The Total traits will soon be renamed to {Eq,Ord}.
cc #12517
[breaking-change]
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This was only ever a transitionary macro.
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[breaking-change]
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[breaking-change]
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[breaking-change]
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The span on a inner doc-comment would point to the next token, e.g. the span for the `a` line points to the `b` line, and the span of `b` points to the `fn`.
```rust
//! a
//! b
fn bar() {}
```
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[breaking-change]
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StdWriter has .isatty(). StdReader can trivially vend the same function,
and someone asked today on IRC how to call isatty() on stdin.
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This plugs a leak where resolve was treating enums defined in parent modules as
in-scope for all children modules when resolving a pattern identifier. This
eliminates the code path in resolve entirely.
If this breaks any existing code, then it indicates that the variants need to be
explicitly imported into the module.
Closes #14221
[breaking-change]
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1. Wherever the `buf` field of a `Formatter` was used, the `Formatter` is used
instead.
2. The usage of `write_fmt` is minimized as much as possible, the `write!` macro
is preferred wherever possible.
3. Usage of `fmt::write` is minimized, favoring the `write!` macro instead.
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