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Remove trailing triple backticks in `mut_keyword` docs
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Stabilize {std, core}::prelude::rust_*.
This stabilizes the `{core, std}::prelude::{rust_2015, rust_2018, rust_2021}` modules.
The usage of these modules as the prelude in those editions was already stabilized. This just stabilizes the modules themselves, making it possible for a user to explicitly refer to them.
Tracking issue: https://github.com/rust-lang/rust/issues/85684
FCP on the RFC that included this finished here: https://github.com/rust-lang/rfcs/pull/3114#issuecomment-840577395
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Refactor windows sockets impl methods
No behavioural changes, but a bit tidier visual flow.
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Add functions `Duration::try_from_secs_{f32, f64}`
These functions allow constructing a Duration from a floating point value that could be out of range without panicking.
Tracking issue: #83400
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Explain non-dropped sender recv in docs
Original senders that are still hanging around could cause
Receiver::recv to not block since this is a potential footgun
for beginners, clarify more on this in the docs for readers to
be aware about it.
Maybe it would be better to show an example of the pattern where `drop(tx)` is used when it is being cloned multiple times? Although I have seen it in quite a few articles but I am surprised that this part is not very clear with the current words without careful reading.
> If the corresponding Sender has disconnected, or it disconnects while this call is blocking, this call will wake up and return Err to indicate that no more messages can ever be received on this channel. However, since channels are buffered, messages sent before the disconnect will still be properly received.
Some words there may seemed similar if I carefully read and relate it but if I am new, I probably does not know "drop" makes it "disconnected". So I mention the words "drop" and "alive" to make it more relatable to lifetime.
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This also adds the error type used, `FromSecsError` and its `impl`s.
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Original senders that are still hanging around could cause
Receiver::recv to not block since this is a potential footgun
for beginners, clarify more on this in the docs for readers to
be aware about it.
Fix minor tidbits in sender recv doc
Co-authored-by: Dylan DPC <dylan.dpc@gmail.com>
Add example for unbounded receive loops in doc
Show the drop(tx) pattern, based on tokio docs
https://tokio-rs.github.io/tokio/doc/tokio/sync/index.html
Fix example code for drop sender recv
Fix wording in sender docs
Co-authored-by: Josh Triplett <josh@joshtriplett.org>
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Updated code examples and wording in move keyword documentation
Had a conversation with someone on the Rust Discord who was confused by the move keyword documentation. Some of the wording is odd sounding ("owned by value" - what else can something be owned by?). Also, some of the examples used Copy types when demonstrating move, leading to variables still being accessible in the outer scope after the move, contradicting the examples' comments.
I changed the move keyword documentation a bit, removing that odd wording and changing all the examples to use non-Copy types
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Multiple improvements to RwLocks
This PR replicates #77147, #77380 and #84650 on RWLocks :
- Split `sys_common::RWLock` in `StaticRWLock` and `MovableRWLock`
- Unbox rwlocks on some platforms (Windows, Wasm and unsupported)
- Simplify `RwLock::into_inner`
Notes to reviewers :
- For each target, I copied `MovableMutex` to guess if `MovableRWLock` should be boxed.
- ~A comment says that `StaticMutex` is not re-entrant, I don't understand why and I don't know whether it applies to `StaticRWLock`.~
r? `@m-ou-se`
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Filesystems generally have a tree-ish structure which means
paths are more likely to share a prefix than a suffix. Absolute paths
are especially prone to share long prefixes.
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nickshiling:forwarding_impl_for_seek_trait_stream_position, r=dtolnay
Forwarding implementation for Seek trait's stream_position method
Forwarding implementations for `Seek` trait's `stream_position` were missed when it was stabilized in `1.51.0`
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Add `Ipv6Addr::is_unicast`
Adds an unstable utility method `Ipv6Addr::is_unicast` under the feature flag `ip` (tracking issue: #27709).
Added for completeness with the other unicast methods (see also https://github.com/rust-lang/rust/issues/85604#issuecomment-848220455) and opposite of `is_multicast`.
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Fix documentation style inconsistencies for IP addresses
Pulled out of #85655 as it is unrelated. Fixes some inconsistencies in the docs for IP addresses:
- Currently some addresses are backticked, some are not, this PR backticks everything consistently. (looks better imo)
- Lowercase hex-literals are used when writing addresses.
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The "read more" sentence formatted "object safety" as inline code
instead of providing a link to more information. This PR adds a link
to the Reference about this matter, as well as the page regarding trait
objects.
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Prior to this patch, the default panic message (resulting from calling
`panic_any(42);` for example), would print the following error message:
```
thread 'main' panicked at 'Box<Any>', ...
```
However, this should be `Box<dyn Any>` instead.
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Co-authored-by: Mara Bos <m-ou.se@m-ou.se>
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td align attribute
This is a follow-up of #85972. I have put this one on its own because it changes the display:
Without align:
I also opened an issue about it: raphlinus/pulldown-cmark#533. However, I'm not sure if this is the right course of action... Should we instead ignore the warning?
r? ``@jsha``
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Possible errors when accessing file metadata are platform specific
In particular the `is_dir`, `is_file` and `exists` functions suggests that querying a file requires querying the directory. On Windows this is not normally true.
r? `@m-ou-se`
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Document `From` impls in path.rs
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rustdoc: link to stable/beta docs consistently in documentation
This is an alternative to https://github.com/rust-lang/rust/pull/84941 which fixes the problem consistently by linking to stable/beta for *all* items, not just for primitives.
## User-facing changes
- Intra-doc links to primitives that currently go to rust-lang.org/nightly/std/primitive.x.html will start going to channel that rustdoc was built with. Nightly will continue going to /nightly; Beta will link to /beta; stable compilers will link to /1.52.1 (or whatever version they were built as).
- Cross-crate links from std to core currently go to /nightly unconditionally. They will start going to /1.52.0 on stable channels (but remain the same on nightly channels).
- Intra-crate links from std to std (or core to core) currently go to the same URL they are hosted at; they will continue to do so. Notably, this is different from everything else because it can preserve the distinction between /stable and /1.52.0 by using relative links.
Note that "links" includes both intra-doc links and rustdoc's own
automatically generated hyperlinks.
## Implementation changes
- Update the testsuite to allow linking to /beta and /1.52.1 in docs
- Use an html_root_url for the standard library that's dependent on the channel
This avoids linking to nightly docs on stable.
- Update rustdoc to use channel-dependent links for primitives from an
unknown crate
- Set DOC_RUST_LANG_ORG_CHANNEL from bootstrap to ensure it's in sync
- Include doc.rust-lang.org in the channel
cc Mark-Simulacrum - I know [you were dubious about this in the past](https://rust-lang.zulipchat.com/#narrow/stream/122651-general/topic/Rustdoc.20unconditionally.20links.20to.20nightly.20libstd.20docs/near/231223124), but I'm not quite sure why? I see this as "just a bugfix", I don't know why rustdoc should unconditionally link to nightly.
cc dtolnay who commented in https://github.com/rust-lang/rust/issues/30693:
> I would welcome a PR to solve this permanently if anyone has ideas for how. I don't believe we need an RFC.
Fixes https://github.com/rust-lang/rust/issues/30693 (note that issue is marked as feature-accepted, although I don't see where it was discussed).
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## User-facing changes
- Intra-doc links to primitives that currently go to rust-lang.org/nightly/std/primitive.x.html will start going to channel that rustdoc was built with. Nightly will continue going to /nightly; Beta will link to /beta; stable compilers will link to /1.52.1 (or whatever version they were built as).
- Cross-crate links from std to core currently go to /nightly unconditionally. They will start going to /1.52.0 on stable channels (but remain the same on nightly channels).
- Intra-crate links from std to std (or core to core) currently go to the same URL they are hosted at; they will continue to do so. Notably, this is different from everything else because it can preserve the distinction between /stable and /1.52.0 by using relative links.
Note that "links" includes both intra-doc links and rustdoc's own
automatically generated hyperlinks.
## Implementation changes
- Update the testsuite to allow linking to /beta and /1.52.1 in docs
- Use an html_root_url for the standard library that's dependent on the channel
This avoids linking to nightly docs on stable.
- Update rustdoc to use channel-dependent links for primitives from an
unknown crate
- Set DOC_RUST_LANG_ORG_CHANNEL from bootstrap to ensure it's in sync
- Include doc.rust-lang.org in the channel
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Support Android ndk versions `r23-beta3` and up
Since android ndk version `r23-beta3`, `libgcc` has been replaced with `libunwind`. This moves the linking of `libgcc`/`libunwind` into the `unwind` crate where we check if the system compiler can find `libunwind` and fall back to `libgcc` if needed.
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New prelude
RFC: rust-lang/rfcs#3114
Tracking issue: https://github.com/rust-lang/rust/issues/85684
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Since android ndk version `r23-beta3`, `libgcc` has been replaced with
`libunwind`. This moves the linking of `libgcc`/`libunwind` into the
`unwind` crate where we check if the system compiler can find
`libunwind` and fall back to `libgcc` if needed.
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- Split `sys_common::RWLock` between `StaticRWLock` and `MovableRWLock`
- Unbox `RwLock` on some platforms (Windows, Wasm and unsupported)
- Simplify `RwLock::into_inner`
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