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Use `std::mem::{size_of, size_of_val, align_of, align_of_val}` from the
prelude instead of importing or qualifying them.
These functions were added to all preludes in Rust 1.80.
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Following #137165 (Use `tell` for `<File as Seek>::stream_position`),
`tell` is now directly exposed via `stream_position`, making
`<File as FileExt>::tell` redundant. Remove it.
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The previous commit updated `rustfmt.toml` appropriately. This commit is
the outcome of running `x fmt --all` with the new formatting options.
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Many tiny changes to stdlib doc comments to make them consistent (for example
"Returns foo", rather than "Return foo", per RFC1574), adding missing periods, paragraph
breaks, backticks for monospace style, and other minor nits.
https://github.com/rust-lang/rfcs/blob/master/text/1574-more-api-documentation-conventions.md#appendix-a-full-conventions-text
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Signed-off-by: Ryan Levick <me@ryanlevick.com>
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Signed-off-by: Ryan Levick <me@ryanlevick.com>
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This reverts commit 31ecf341250a889ac1154b2cbe3f0b97f9d008c1.
Co-authored-by: Ryan Levick <me@ryanlevick.com>
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Signed-off-by: Ryan Levick <me@ryanlevick.com>
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See https://github.com/rust-lang/rust/pull/103308#issuecomment-1292277645
for this ask.
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io_safety was stabilized in Rust 1.63, so mark the io_safety exports in
`std::os::wasi::io` as stable.
Fixes #103306.
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`std::os::fd` defines types like `OwnedFd` and `RawFd` and is common
between Unix and non-Unix platforms that share a basic file-descriptor
concept. Rust currently uses this internally to simplify its own code,
but it would be useful for external users in the same way, so make it
public.
This means that `OwnedFd` etc. will all appear in three places, for
example on unix platforms:
- `std::os::fd::OwnedFd`
- `std::os::unix::io::OwnedFd`
- `std::os::unix::prelude::OwnedFd`
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This fixes a regression from stable to nightly.
Closes #99502.
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With the addition of `sock_accept()` to snapshot1, simple networking via
a passed `TcpListener` is possible. This patch implements the basics to
make a simple server work.
Signed-off-by: Harald Hoyer <harald@profian.com>
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To make use of `sock_accept()`, update the wasi crate to `0.11.0`.
Signed-off-by: Harald Hoyer <harald@profian.com>
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Rename WASI's `FileTypeExt::is_character_device` to
`FileTypeExt::is_char_device`, for consistency with the Unix
`FileTypeExt::is_char_device`.
Also, add a `FileTypeExt::is_socket` function, for consistency with the
Unix `FileTypeExt::is_socket` function.
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> add intra doc links
> add a usage example for the os::windows module
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Introduce `OwnedFd` and `BorrowedFd`, and the `AsFd` trait, and
implementations of `AsFd`, `From<OwnedFd>` and `From<T> for OwnedFd`
for relevant types, along with Windows counterparts for handles and
sockets.
Tracking issue:
- <https://github.com/rust-lang/rust/issues/87074>
RFC:
- <https://github.com/rust-lang/rfcs/blob/master/text/3128-io-safety.md>
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WASI previously used `u32` as its `RawFd` type, since its "file descriptors"
are unsigned table indices, and there's no fundamental reason why WASI can't
have more than 2^31 handles.
However, this creates myriad little incompability problems with code
that also supports Unix platforms, where `RawFd` is `c_int`. While WASI
isn't a Unix, it often shares code with Unix, and this difference made
such shared code inconvenient. #87329 is the most recent example of such
code.
So, switch WASI to use `c_int`, which is `i32`. This will mean that code
intending to support WASI should ideally avoid assuming that negative file
descriptors are invalid, even though POSIX itself says that file descriptors
are never negative.
This is a breaking change, but `RawFd` is considerd an experimental
feature in [the documentation].
[the documentation]: https://doc.rust-lang.org/stable/std/os/wasi/io/type.RawFd.html
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Redefine `ErrorKind::Other` and stop using it in std.
This implements the idea I shared yesterday in the libs meeting when we were discussing how to handle adding new `ErrorKind`s to the standard library: This redefines `Other` to be for *user defined errors only*, and changes all uses of `Other` in the standard library to a `#[doc(hidden)]` and permanently `#[unstable]` `ErrorKind` that users can not match on. This ensures that adding `ErrorKind`s at a later point in time is not a breaking change, since the user couldn't match on these errors anyway. This way, we use the `#[non_exhaustive]` property of the enum in a more effective way.
Open questions:
- How do we check this change doesn't cause too much breakage? Will a crate run help and be enough?
- How do we ensure we don't accidentally start using `Other` again in the standard library? We don't have a `pub(not crate)` or `#[deprecated(in this crate only)]`.
cc https://github.com/rust-lang/rust/pull/79965
cc `@rust-lang/libs` `@ijackson`
r? `@dtolnay`
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