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We can't call into the inner reader for a 0-byte read because that may
end up blocking or returning an error.
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This brings it in line with its namesake in `std::io`.
[breaking-change]
r? @aturon
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This brings it in line with its namesake in `std::io`.
[breaking-change]
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This commit is an implementation of [RFC 739][rfc] which adds a new `std::fs`
module to the standard library. This module provides much of the same
functionality as `std::old_io::fs` but it has many tweaked APIs as well as uses
the new `std::path` module.
[rfc]: https://github.com/rust-lang/rfcs/pull/739
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This commit is an implementation of [RFC 739][rfc] which adds a new `std::fs`
module to the standard library. This module provides much of the same
functionality as `std::old_io::fs` but it has many tweaked APIs as well as uses
the new `std::path` module.
[rfc]: https://github.com/rust-lang/rfcs/pull/739
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New functions, `slice::from_raw_parts` and `slice::from_raw_parts_mut`,
are added to implement the lifetime convention as agreed in rust-lang/rfcs#556.
The functions `slice::from_raw_buf` and `slice::from_raw_mut_buf` are
left deprecated for the time being.
Holding back on changing the signature of `std::ffi::c_str_to_bytes` as consensus in rust-lang/rfcs#592 is building to replace it with a composition of other functions.
Contribution to #21923.
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The spelling corrections were made in both documentation comments and
regular comments.
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This commit is an implementation of [RFC 576][rfc] which adds back the `std::io`
module to the standard library. No functionality in `std::old_io` has been
deprecated just yet, and the new `std::io` module is behind the same `io`
feature gate.
[rfc]: https://github.com/rust-lang/rfcs/pull/576
A good bit of functionality was copied over from `std::old_io`, but many tweaks
were required for the new method signatures. Behavior such as precisely when
buffered objects call to the underlying object may have been tweaked slightly in
the transition. All implementations were audited to use composition wherever
possible. For example the custom `pos` and `cap` cursors in `BufReader` were
removed in favor of just using `Cursor<Vec<u8>>`.
A few liberties were taken during this implementation which were not explicitly
spelled out in the RFC:
* The old `LineBufferedWriter` is now named `LineWriter`
* The internal representation of `Error` now favors OS error codes (a
0-allocation path) and contains a `Box` for extra semantic data.
* The io prelude currently reexports `Seek` as `NewSeek` to prevent conflicts
with the real prelude reexport of `old_io::Seek`
* The `chars` method was moved from `BufReadExt` to `ReadExt`.
* The `chars` iterator returns a custom error with a variant that explains that
the data was not valid UTF-8.
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In preparation for the I/O rejuvination of the standard library, this commit
renames the current `io` module to `old_io` in order to make room for the new
I/O modules. It is expected that the I/O RFCs will land incrementally over time
instead of all at once, and this provides a fresh clean path for new modules to
enter into as well as guaranteeing that all old infrastructure will remain in
place for some time.
As each `old_io` module is replaced it will be deprecated in-place for new
structures in `std::{io, fs, net}` (as appropriate).
This commit does *not* leave a reexport of `old_io as io` as the deprecation
lint does not currently warn on this form of use. This is quite a large breaking
change for all imports in existing code, but all functionality is retained
precisely as-is and path statements simply need to be renamed from `io` to
`old_io`.
[breaking-change]
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Conflicts:
src/libcore/ops.rs
src/librustc_typeck/astconv.rs
src/libstd/io/mem.rs
src/libsyntax/parse/lexer/mod.rs
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Conflicts:
src/liballoc/boxed.rs
src/librustc/middle/traits/error_reporting.rs
src/libstd/sync/mpsc/mod.rs
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Conflicts:
src/libstd/sync/mpsc/select.rs
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r? @alexcrichton
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Conflicts:
src/libstd/io/mod.rs
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Conflicts:
src/libsyntax/parse/lexer/comments.rs
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Fixes #20943 and adds a test for it
r? @alexcrichton
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This commit is an implementation of [RFC 565][rfc] which is a stabilization of
the `std::fmt` module and the implementations of various formatting traits.
Specifically, the following changes were performed:
[rfc]: https://github.com/rust-lang/rfcs/blob/master/text/0565-show-string-guidelines.md
* The `Show` trait is now deprecated, it was renamed to `Debug`
* The `String` trait is now deprecated, it was renamed to `Display`
* Many `Debug` and `Display` implementations were audited in accordance with the
RFC and audited implementations now have the `#[stable]` attribute
* Integers and floats no longer print a suffix
* Smart pointers no longer print details that they are a smart pointer
* Paths with `Debug` are now quoted and escape characters
* The `unwrap` methods on `Result` now require `Display` instead of `Debug`
* The `Error` trait no longer has a `detail` method and now requires that
`Display` must be implemented. With the loss of `String`, this has moved into
libcore.
* `impl<E: Error> FromError<E> for Box<Error>` now exists
* `derive(Show)` has been renamed to `derive(Debug)`. This is not currently
warned about due to warnings being emitted on stage1+
While backwards compatibility is attempted to be maintained with a blanket
implementation of `Display` for the old `String` trait (and the same for
`Show`/`Debug`) this is still a breaking change due to primitives no longer
implementing `String` as well as modifications such as `unwrap` and the `Error`
trait. Most code is fairly straightforward to update with a rename or tweaks of
method calls.
[breaking-change]
Closes #21436
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As discussed with @aturon, this PR removes the `Send` bound from `std::error::Error`, allowing us to implement `Error` for error types containing non-`Send` types. Current examples include `PoisonError` and `TryLockError` from `std::sync` which contain a Guard that we don't want sent between tasks.
[breaking-change]
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Fixes #20943
Signed-off-by: Peter Atashian <retep998@gmail.com>
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I searched for times when we were hiding functions with # in the documentation,
and fixed them to not use it unless neccesary.
I also made random improvements whenever I changed something. For example,
I changed Example to Examples, for consistency.
Fixes #13423
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expansion now uses `::std::hash::Hash::hash(&*__self_0_0, __arg_0)` instead of
`(*__self_0_0).hash(__arg_0)`
closes #21160
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It's passed to the underlying reader, so uninitialized memory == sad
times.
We might want to shrink the default buffer size as well. 64k is pretty
huge. Java uses 8k by default, and Go uses 4k for reference.
r? @alexcrichton
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It's passed to the underlying reader, so uninitialized memory == sad
times.
We might want to shrink the default buffer size as well. 64k is pretty
huge. Java uses 8k by default, and Go uses 4k for reference.
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Change any use of AtomicInt to AtomicIsize and AtomicUint to AtomicUsize
Closes #20893
[breaking-change]
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Change any use of AtomicInt to AtomicIsize and AtomicUint to AtomicUsize
Closes #20893
[breaking-change]
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A derived implementation would not be appropriate for the Buffered types
since the buffer is both huge (64k by default) and full of uninitialized
memory. Instead of printing the whole thing, we display how full it is.
I also altered MultiWriter to make it generic over Writers instead of
taking Box<Writer> trait objects. Box<Writer> implements Writer so
existing use cases should continue to work, and this enables a more
useful Show implementation in applicable cases.
The change to MultiWriter may break code that uses it, but any fixes
should be easy.
[breaking-change]
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Better iOS support
Reviewed-by: alexcrichton
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Now it is possible to run tests on a jailbroken device
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This gets rid of the 'experimental' level, removes the non-staged_api
case (i.e. stability levels for out-of-tree crates), and lets the
staged_api attributes use 'unstable' and 'deprecated' lints.
This makes the transition period to the full feature staging design
a bit nicer.
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Conflicts:
src/libcollections/vec.rs
src/libcore/fmt/mod.rs
src/librustc/lint/builtin.rs
src/librustc/session/config.rs
src/librustc_trans/trans/base.rs
src/librustc_trans/trans/context.rs
src/librustc_trans/trans/type_.rs
src/librustc_typeck/check/_match.rs
src/librustdoc/html/format.rs
src/libsyntax/std_inject.rs
src/libsyntax/util/interner.rs
src/test/compile-fail/mut-pattern-mismatched.rs
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Conflicts:
src/libserialize/lib.rs
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